Title of Invention

ELECTROLUMINESCENT DEVICE

Abstract

Disclosed are electroluminescent devices that comprise organic layers that contain certain organic compounds containing one ore mora pyrimidine moieties. The organic compounds containing one ore more pyrimidine moieties are suitable components of blue-emitting, durable, organo-eiectrcluminescent layers. The electroluminescent devices may be employed for full color display panels in for example mobile phones, televisions and personal computer screens.

Full Text

ELECTROLUMINESCENT DEVICE The present invention relates to organo-electroluminescent (EL) devices, in particular EL devices that comprise durable, blue-emitting organo-electrouminescent layers. The organo-electroluminescent layers comprise certain organic compounds containing one or more pyrimidine moieties. Progress has been made towards developing organic-based electroluminescent devices suitable for full color displays. Generally, an EL device is comprised of a light-emitting layer or layers and a pair of facing electrodes sandwiching the light-emitting layer(s). Application of an electric field between the electrodes results in the injection of electrons and holes to the system, resulting in the release of energy as light. However, organo EL devices have not been developed that have suitable stability under continuous operation. In particular, there remains a need for blue-emitting, stable organo EL devices. U.S. Pat. No. 5,104,740 teaches an electroluminescent element that comprises a fluorescent layer containing a coumarinic or azacoumarinic derivative and a hole transoort la^r hnth "made" oforgahic compounds and laminated on tap-cttoe other. U.S. Pat. No. 6,280,859 discloses certain polyaromatic organic compounds for use as a light-emitting material in organo-electroluminescent devices. U.S. Pat. No. 5,116,708 is aimed at a hole transport material for EL devices. WO98/04007 and EP-A-1013740 relate to an electroluminescent arrangement with the electron-conducting layer containing one or more compounds comprising triazine as basic substance. EP-A-1013740 discloses the use of triazine compounds in EL devices. EP-A-1,202,608 discloses EL devices comprising a carbazole compound of formula which constitutes the hole transporting layer. - - JP2002324678 relates to light emitting elements comprising at least one kind of compound of Ar11. Ar21 and Ar31 denote aryiene aroups, Ar12, Ar22 and Ar32 denote substituents or hydrogen atoms, wherein at least on*»-fif Ai^Vftg21, Ar^Ar^.Ar22 and Ar32 is eto^aLa^ense€tfiea aryl structure or a condensed ring heteroaryl structure; Ar denotes an aryiene group or a heteroarylene group; and at least one amine derivative having a condensed ring group with two or more rings are contained in a luminous layer. As examples of compounds of the above formula, wherein Ar denotes a heteroarylene group the following two compounds are explicitly mentioned: WO02/02714 relates to electroluminescent iridium compounds with fluorinated phenylpyridines, phenylpyrimidines, and phenylquinolines and devices made with such compounds. US-A-5,770,108 describes liquid crystal compositions comprising pyrimidine compounds of ' the following formula Y is alkyl or -O-alkyl and liquid crystal element comprising said composition. WO01/05863 relates to EL devices comprising aryiamine-substituted poly(arylene vinylenes). EP-A-926216 relates to EL devices using triaryf amine compounds, such as EP-A-690 053 relates to the use of conjugated compounds containing two or more pyrimidine rings, which are part of the conjugated system, as electroluminescent materials. The conjugated compounds described in EP-A-690 053 comprise pyrimidin-2,5-diyl groups which do not carry substituents at positions 4 and 6. EP-A-563009 relates to EL devices comprising US-A-5,077,142 relates to EL devices comprising a number of organic compounds as light emitting material. A pyrimidine moiety, , is listed among a long list of possible organic compounds. It is the object of the present invention to provide a light emitting element with excellent light emitting characteristics and durability. Certain organic compounds containing one or more pyrimidine moieties are found to be suitable for use in organo-electroluminescent devices. In particular, certain pyrimidine derivatives are suitable blue emitters with good durability. The present invention is aimed at an electroluminescent device comprising an organic light-emitting layer that contains at least one blue-emitting organic compound containing one or more Dvrimidine moieties. Accordingly the present invention"relates to an electroluminescent device comprising an anode, a cathode and one or a plurality of organic compound layers sandwiched therebetween, in which said organic compound layers comprise an organic compound containing one ore more pyrimidine moieties: For example, the present organic compounds comprise one, two, three or more pyrimidine moieties, including oligomers. It is understood that the open valences in the pyrimidine moiety represents a covalent bond that is not limited in its substitution. In general, the organic compound or compounds emit light below about 520 nm, in particular between about 380 nm and about 520 nm. The organic compound or compounds have especially a NTSC coordinate of between about (0.12, 0.05) and about (0.16, 0.10), more especially a NTSC coordinate of about (0.14, 0.08). The organic compound or compounds have a melting point above about 150°d preferably above about 200°C and most preferred above about 250°C. For example, the organic compound is a pyrimidine compound of formula (I), wherein V is C6-C3oaryI or C2-C3oheteroaryl, which can be substituted or unsubstituted, in particular , H, CrC18alkyl; d-daalkyl which is substituted by E and/or interrupted by D; C2-d8alkenyl, drdaalkenyl which is substituted by E and/or interrupted by D; C2-dsaIkynyI; C2-C18alkynyl which is substituted by E and/or interrupted by D; d-dsalkoxy; d-dsalkoxy „ which is substituted by E and/or interrupted bv D: -SR5: -NR5R6; W is C6-C3oaryl or Cz^ohetetSr^^ or unsubstrtuteir-irrpaFticutar , H, d-daalkyl; d-dsalkyi which is substituted by E and/or interrupted by D; C2-d8alkenylI C2-daalkenyl which is substituted by E and/or interrupted by D; C2-C18alkynyl; C2-d8aikynyl which is substituted by E and/or interrupted by D; d-dsalkoxy; CrC18alkoxy which is substituted by E and/or interrupted by D; -SR5; -NR5R6; Y is C6-C30aryi or C2-C3oheteroarylf which can be substituted or unsubstituted, in particular , H, d-daalkyl; d-d8alkyl which is substituted by E and/or interrupted by D; C2-d8alkenyl, C2-d8alkenyl which is substituted by E and/or interrupted by D; CrC18alkynyl; C2-d8alkynyl which is substituted by E and/or interrupted by D; d-C18alkoxy; d-d8alkoxy which is substituted by E and/or interrupted by D; -SR5; -NR5R6; X is C6-C3oaryl or C2-C3oheteroaryl, which can be substituted or unsubstituted, in particular , H, CrCisalkyI; CrCi8alkyl which is substituted by E and/or interrupted by D; C2-Ci8alkenyl, CrC18alkenyl which is substituted by E and/or interrupted by D; C2-C18aikynyl; C2-Ci8alkynyl which is substituted by E and/or interrupted by D; d-C^aikoxy; Ci-C18aikoxy which is substituted by E and/or interrupted by D; -SR5; -NR5R6; wherein the groups V1 to V5, W1 to W5, X1 to X5and Y1 to Y5 are independently of each other H; halogen, C6-C24ar/I; C6-C24aryl which is substituted by G; CrCiaaikyl; CrCi8alkyi which is substituted by E and/or interrupted by D; C7-Ci8alkylaryl; C7-Ci8alkyiaryl which is substituted by E and/or interrupted by D; C2-C18aikenyl; C2-Ci8alkenyl which is substituted by E and/or interrupted by D; , wherein Ar1 is C6-C30aryl or C2-C30heteroaryl, especially phenyl, "Ar is Cs-C3oaryl or C2-C30heteroaryl, especially phenyl, or H, C2-Ciaalkynyl; C2-Ci8alkynyi which is substituted by E and/or interrupted by D; Ci-Ci8alkoxy, CrC18aikoxy which is substituted by E and/or interrupted by D; -SR5; -NR5R6; C2-C24hetero-aryl; C2-C24heteroaryl which is substituted by L; -S0R4; -S02R4; -COR8; -CQOR7; -CONR5R6; C4-C18cycioalkyl; C4-C19cycloalkyl which is. _ substituted by E and/or intera^ecUby D; C4-Ctac^cloaIkenyl; C4-C«8cyclQafeenyLwhich is substituted by E and/or interrupted by D; or W5 or Y5 together with V form a group W5 and Y5 together with V form a group wherein R9 is H; CrCi8alkyl, CrC18alkyl which is interrupted by -0-, C5-Ci8ary!, C5-C18aryl which is substituted by CrC18alkyl, or Ci-Ci8alkoxy, or one of the substituents V, W, Xt or Y is a group of the formula -Z, -Ar-Z, wherein Ar is C6-C24aryl or C2-C24heteroapyi> which can be substituted, in particular wherein Z is a group of formula one of the substituents V1 to V5, W1 to W5, X1 to X5, or Y1 to Y5 is a group of the formula -Z\ -Ar-Z\ wherein Ar is C6- C24aryl or C2-C24heteroaryl, which can be substituted, in particular A1, B1 and B2 are independently of each other H; C6-Ci8aryl; C6-Ci8aryl which is substituted by G; Ci-C^alkyi; d-C18alkyi which is substituted by E and/or interrupted by D; C7- Jptaalkyj^liJSx-^ substituted by gowdteHfttefrupteel by D, C2-C18dlkmiyi; QrCtsaikenyl which is substjfefed-byEand/or interrupted by D; C2-Ci8aIRynyl; C2:Ci8aikynyi which is substituted by E and/or interrupted by D; d-Ci8alkoxyr d-Ci8alkoxy which is substituted by E and/or interrupted by D; -SR5; -NR5R6; C2-Ci8heteroaryl; C2-Ci8heteroaryl which is substituted by L; -SOR4; -S02R4; -COR8; -COOR7; -CONR5R6; C4-C18cycioaikyl; C4-C18cycloaIkyl which is substituted by E and/or interrupted by D; C4-Ci8cycloalkenyi; C4-C18cycloalkenyl which is substituted by E and/or interrupted by D; or two substituents A1, B1, B2 or B1 and B2 form a five to seven membered ring, which can be substituted, m is an integer of 1 to 4; and W\ W2, Y1, Y2t X1, X2, V, W, X and Y are as defined above; D is -CO-; -COO-; -OCOO-; -S-; -SO-; -S02-; -0-; -NR5-; -SiR5R6-; -POR5-; -CR5=CR6-; or -C»C-; E is -OR5; -SR5; -NR5R6; -COR8; -COOR7; -CONR5R6; -CNj -pCOOR7; or halogen, especfally F; G is E; K; heteroaryl; heteroaryl which is substituted by C6-C18aryl; C6-Ci3aryl which is substituted by E and/or K; K is CrCiQalkyl; CrC18alkyl which is substituted by E and/or interrupted by D; C7-C18alkylaryi which is substituted by E and/or interrupted by D; C2-Ci8arkenyl; C2-C1Qalkenyl which is substituted by E and/or interrupted by D; C2-C18alkynyl; C2-daalkynyl which is substituted by E and/or interrupted by D; d-dsalkoxy, CrCi8alkoxy which is substituted by E and/or interrupted by D; C4-Ci8cycloalkyl; C4-Ci8cycioalkyl which is substituted by E and/cr interrupted by D; C4-C18cyc!oaikenyl; or C4-Ci8cycloalkenyI which is substituted by E and/or interrupted by D; L is E; K;C6-Ciaaryi; or CQ-C18aryl which is substituted by G, E and/or K; R4 is C6-C18aryl; C6-Ci8aryi which is substituted by d-daalkyl, CrC18aikoxy; d-d3aikyl; or CrC18aIkyI which is interrupted by-O-; R5 and R6 are independently of each other H; C6-Ci8aryi; C6-Ci8aryl which is substituted by CrCi8alkyl, d-d3alkoxy; Crd8alkyl; or d-Ci8alky! which is interrupted by -0-; or R5 and R6 together form a five or six membered ring, in particular R7 is H; C6-Ci8aryl; C6-d8aryi which is substituted by d-dRalkvl, d-daaIkoxv: C-CQaikvh CrCTaaTkyl which is interrupted by-O-; R8 is H; C6-Ci8aryl; C6-d3aryi which is substituted by d-C18alkyl, d-C18alkoxy; d-dsalkyl; d-Ci8a!kyl which is interrupted by-O-. or two substituents selected from V1 to V5, W1 to Ws, X1 to X5, Y1 to Y5 which are in neighborhood to each other form a five to seven membered ring. Preferably at least one, more preferably at least two, most preferably at least three of the groups V, W, X and Y are Os-C^ary! or C2-C30heteroaryl, which optionally can be substituted. Preferred are compounds of formula I, wherein Y is , wherein Y1 to Y5 are as defined above and at least one of the substituents Y1 to Y5 is different from H; W is wherein W1 to W5 are as defined above and at least one of the substituents W1 to W5 is different from H; X is , wherein X1 to X5 are as defined above and at least one of the substituents X1 to X5 is different from H, and/or V is , wherein V1 to Vs are as defined above and at least one substituent V1 to V5 is different from H. In one further embodiment comnnnnris nf fnrmulp I arA nrpfprrpri whprpin Y IQ V and W is , wherein W1 and W5 and Y1 and Y5 are independently of each other H; CrCi8alkyl; or Ci-Ci8alkyl which is substituted by E and/or interrupted by D. Examples of suitable groups Arare n1, n2, n3, n4, n5, n6 and n7 are integers of 1 to 10, in particular 1 to 3, A6 and A7 are independently of each other H, d-C^alkyl, CrC18alkyl which is substituted by E and/or interrupted by D, C6-C24aryl, C6-C24aryl which is substituted by Ef C2-C2oheteroaryl, C2-C2oheteroaryl which is substituted by E, C2-Ciaalkenyl, C2-C18alkynyl, d-daalkoxy, d-Ci8alkoxy which is substituted by E and/or interrupted by D, C7-C25aralkyl, or -CO-R28, A8 is d-d8alkyi, Crdaalkyl which is substituted by E and/or interrupted by D, Cs-C24 aryl, or C7-C2saralkyl, A9 and A10 are independently of each other d-ds alkyl, CrC18aIkyl which is substituted by E and/or interrupted by D, C6-C24aryl, C6-C24aryl which is substituted by E, C^C^heteroaryl, C2-C20heteroaryl which is substituted by E, C2-d8alkenyl, C2-Ci8aikynyl, d-dsalkoxy, d-Ci8alkoxy which is substituted by E and/or interrupted by D, or Cr-C^aralkyl, or A9 and A10 form a ring, especially a five- or six-membered ring, .A™ andj^jaiieinclependfintly nf earh-Qthor H, Ci Cmalkyl, Ci Cnjalkyl yuliiUi \± oubsliiumif by E and/or interrupted by D, Ge^G^aryt, Ce-C^aryT which is substituted Dy t, C2- ~~ C^heteroaryl, or C2-C20heteroaryl which is substituted by E, D is -CO-; -COO-; -S-; -SO-; -SOr; -0-; -NA25-; -SiA^A31-; -POA32-; -CA23=CA24-; or -C=C-; and E is -OA29; -SA29; -NA25A26; -COA28; -COOA27; -CONA25A26; -ON; -OCOOA27; or halogen; wherein A23, A24, A25 and A26 are independently of each other H; C6-C18aryl; C6-C:8aryl which is substituted by d-d8alkyl, CrCi8alkoxy; CrCi8alkyl; or d-Ci8alkyl which is interrupted by A27 and A28 are independently of each other H; C6-C18aryl; C6-C18aryi which is substituted by Ci-Ci8alkyl, or Ci-Ci8aIkoxy; Ci-Ci8alkyl; or CrC18alkyl which is interrupted by -0-, A29 is H; C6-Ci8an/I; C5-Ci8aryl, which is substituted by Ci-Ci8alkyl, CrCiSalkoxy; CrCi8aIkyl; or CrCi8aikyl which is interrupted by -0-, A30 and A31 are independently of each other d-C^alkyl, Cs-Ci8aryl, or Cs-Ci8aryl, which is substituted by C^dsalkyl, and A32 is CrCi8aikyl, C6-C18ar/I, or C6-Ci8aryl, which is substituted by CrCi8alkyl. Preferably, A6 and A7 are independently of each other H, Ci-Ci8alkyi, such as methyl, ethyl, n-propyl, iso-propyl, n-butyl, isobutyl, sec-butyl, t-butyl, 2-methylbutyl, n-pentyl, isopentyl, n-hexyl, 2-ethylhexyl, or n-heptyl, d-C^alky! which is substituted by E and/or interrupted by D, such as -CH2OCH3l -CH2OCH2CH3) -CH2OCH2CH2OCH3, or -CH2OCH2CH2OCH2CH3, C6-C24aryl, such as phenyl, naphthyl, or biphenyl, C6-C24aryl which is substituted by E, such as -C6H4OCH3, -C6H4OCH2CH3, -C6H3(OCH3)2, or -C6H3(OCH2CH3)2, -C6H4CH3, -C6H3(CH3)2l -C6H2(CH3)3, or-C6H4tBu. A8 is preferably H, Ci-Ciaalkyl, such as methyl, ethyl, n-propyl, iso-propyl, n-butyl, isobutyl, sec-butyl, t-butyl, 2-methylbutyl, n-pentyl, isopentyl, n-hexyl, 2-ethylhexyl, n-heptyl, or C6-C24aryl, such as phenyl, naphthyl, or biphenyl. Preferably, A9 and A10 are independently of each other H, CrCi8alkyl, such as n-butyl, sec-butyl, hexyi, octyl, or 2-ethyl-hexyl, CrC18alkyl which is substituted by E and/or interrupted by ....■-— _ ■ |,|.| I Mil I Mill IP III—■■■ I 1 'I- ' " ' ■ i.in.i.iM—■—^—— biphenyl, C6-C24aryl which'is substituted by E, such as -C6H4OCH3, -C6H4OCH2CH3, -C6H3(OCH3)2J -C6H3(OCH2CH3)2f -C6H4CH3, -C6H3(CH3)2, -C6H2(CH3)3l or-C6H4tBu, or A9 and A10 together form a 4 to 8 membered ring, especially a 5 or 6 membered ring, such as cyclohexyl, or cyclopentyl. Preferably, A14 and A15 are independently of each other H, Ci-Ci8alkyl, such as as methyl, ethyl, n-propyl, iso-propyl, n-butyl, isobutyl, or sec-butyl, or Ce-C^aryl, such as phenyl, naphthyl, or biphenyl. D is preferably -CO-, -COO-, -S-, -SO-, -SOr, -0-, -NA25-, wherein A25 is CrC^aikyl, such as methyl, ethyl, n-propyl, iso-propyl, n-butyl, isobutyl, or sec-butyl, or C6-C24aryl, such as phenyl, naphthyl, or biphenyl. . E is preferably -OA29; -SA29; -NA25A25; -COA28; -COOA27; -CONA25A25; or -CN; wherein A25, A27, A23 and A29 are independently of each other Ci-C18 alkyl, such as methyl, ethyl, n-propyl, iso-propyl, n-butyl, isobutyl, sec-butyl, hexyl, octyl, or 2-ethyl-hexyl, or C6-C24 aryl, such as phenyl, naphthyl, or biphenyl. Among the above-mentioned Ar the following groups are preferred: Preferably the electroluminescent device comprises pyrimidine compounds of formula II to /I: ially , wherein R1 is H, OC^alkyl; d-Ci8alkyl which is substituted by E and/or interrupted by D; C2-d8alkenyl, CrC18alkenyl which is substituted by E and/or interrupted by D; C2-CiQalkynyl; C2-d8aikynyl which is substituted by E and/or interrupted by D; CrC18alkoxy; d-d8alkoxy which is substituted by E and/or interrupted by D; -SR5; or -NR5R6; wherein W1 to W5, X1 to Xs, Y1 to Y5, E, D, R5and R5 are as defined above, wherein most preferred W1 and W5 and Y1 and Y° are independently of each other H; CrC18aikyl; or CrC18alkyl which is substituted by E and/or interrupted by D; wherein V, W' to W5, X1 to X5 and Y1 to Y5 are as defined above, preferably W3, X3 and Y3 are selected from the group consisting of C6-C24aryl; C6-C24aryl which is substituted by G; C2-C24heteroaryl; C2-C24heteroaryl which is substituted by L, CrC18alkoxy, -SR5; -NR5R5, wherein G, L, R5 and R6 are as"defined above, V is H and/or W1 and W5, Y1 and Y5 as well as X1 and Xs are independently of each other H; Ci-C18alkyl; or CrCi8alkyl which is substituted by E and/or interrupted by D, wherein E and D are as defined above; or , or W11 to W15, W21 to W25, W31 to W35, W41 to W45, Y11 to Y15, Y21 to Y25, Y31 to Y35 and Y41 to Y45 are independently of each other H; C6-C24aryl; C6-C24aryl which is substituted by G; Cr Ciealkyl; Ci-Ci8alkyl which is substituted by E and/or interrupted by D; C7-C18alkylaryl; Cr Ci8alkyiaryl which is substituted by E and/or interrupted by D; C2-C18alkenyl; C2-C1salkenyl which is substituted by E and/or interrupted by D; C2-Ci8alkynyl; C2-C18alkynyl which is substituted by E and/or interrupted by D; CrC18alkoxy, CrC18alkoxy which is substituted by E and/or interrupted by D; -SR5; -NR5R6; C2-C24heteroaryi; C2-C24heteroaryl which is substituted by L; -SOR4; -SO2R4; -COR8; -COOR7; -CONR5R6rC4-C1Bcycloalkyl; C4- Ci8cycloalkyl which is substituted by E and/or interrupted by D; C4-C18cycloalkenyl; C4- CiflCvcloalkenv^whjch is substituted bv E and/or interrupted by Pi.— V is H; C6-C24ary!; C6^24aryLwhk& substituted by E and/or interrupted by D; C7-C18alkylaryi; C7-Ci8alkylaryl which is substituted by E and/or interrupted by D; C2-C18alkenyl; C2-Ci8alkenyl which is substituted by E and/or interrupted by D; C2-Ci8alkynyl; C2-Ci8aikynyl which is substituted by E and/or interrupted by D; CrCi8alkoxy, CrCi8alkoxy which is substituted by E and/or interrupted by D; -SR5; or - NR5R6; C2-C24heteroaryl; CrC24heteroaryl which is substituted by L; -SOR4; -S02R4; -COR8; -COOR7; -CONR5R6; C4-C13cycloalkyl; C4-C18cycloaikyl which is substituted by E and/or interrupted by D; C4-Ci8cycloalkenyl; C4-C18cycloalkenyl which is substituted by E and/or interrupted by D; A18 and A19 are independently of each other H, CrCi8alkyl; Ci-Ci8alkyl which is substituted by E and/or interrupted by D; C6-Ci8aryl; C6-C18aryl which is substituted by E, B11 to B14 and B21 to B24are independently of each other H; C6-Ci8aryl; C6-C18aryl which is substituted by G; d-daalkyl; Ci-C18alkyl which is substituted by E and/or interrupted by D; C7-Ci8alkylaryl; C7-Ci8alkyiaryl which is substituted by E and/or interrupted by D; C2- Ci8alkenyl; C2-Ci8alkenyl which is substituted by E and/or interrupted by D; C2-Ci3alkynyl; C2- Ci8alkynyl which is substituted by E and/or interrupted by D; CrCi8alkoxy, CrCl8alkoxy which is substituted by J: and/or interrupted by D; -SR5; -NRSR6; C2-Ci8heteroaryl; C2- Ci8heteroaryl which is substituted by L; -SOR4; -S02R4; -COR8; -COOR7; or -CONR5R6; C4-Ci8cycloalkyl; C4-C18cycloalkyl which is substituted by E and/or interrupted by D; C4-C18cycloalkenyl; C4-C18cycloalkenyl which is substituted by E and/or interrupted by D; wherein D, E, G, L, R4, R5, R6, R7and R8 are as defined above, and V in formula VI or VII is preferably H. Moreover, pyrimidine compounds of formula I are preferred, wherein V is a group of the formula . H, d-dgalkyl; CrC18aikyl which is substituted by E and/or interrupted by D; C2-C18alkenyl, C2-C18alkenyl which is substituted by E and/or interrupted by D; C2-C18alkynyl; C2-C18alkynyl which is substituted by E and/or interrupted by D; CrCi8alkoxy; C,-C18alkoxy which is substituted by E and/or interrupted by D; -SR5; or -NRSR6; and/or interrupted by D; C2-C18alkenyl, C2-C18alkenyl which is substituted by E and/or interrupted by D; C2-C18alkynyl; C2-C18alkynyl which is substituted by E and/or interrupted by D; d-C18alkoxy; Ci-C18alkoxy which is substituted by E and/or interrupted by D; -SR5; or -NRSR6; wherein W1 to W5, D, V1 to V5, E, A1, B\ B2, Rs, R6, m and Z are as defined above and R101 and R102 are independently of each other H, CrC8alkyl, C6-C24aryl, or C5-C7cycloalkyl, in particular H or C^-alkyl. The compounds of general formula IV, VI and VII are novel and form a further subject of the present application. In one preferred embodiment the present invention is directed to pyrimidine compounds of at least one of the groups W, X and Y is a group of formula and the other groups are independently of each other an aryl group or a heteroaryi group, especially a group of formula . .R46, R^y-Rg-an4f^-eti^ iiiacpeiiUeiillv uf aatlrultim HrC, Cs-Ciaaryl; CerGyiryr which.as... - ^substituted by E; CrCi8aTRyn"Ui^ E and/or interrupted by D; CrCi8aralkyl; or CrCi8aralkyl which is substituted by E; or R1V and Ft12, R12* and R13, R15' and R16, R16' and R17, R44' and R46 and/or R45' and R47are each a divalent group L1 selected from an oxygen atom, an sulfur atom, >CR118Rm>SiRl18R119, or R30, R31, R32, R33, R49 and R50 are independently of each other H, d-C18alkyl; CrC18alkyl, which is substituted by E and/or interrupted by D; E; C6-Ci8aryi; C6-C18aryl, which is substituted by E; R14 is H, C2-C3oheteroaryl, C6-C3oaryi, or C6-C30aryl which is substituted by E, CrCi8alkyl; or CrCi8alkyi which is substituted by E and/or interrupted by D; especially R26 and R27 are independently of each other H, E, CrCi3alkyl; CrC18alkyl which is substituted by E and/or interrupted by D; E; CrCi8aralkyl; C7-CiBaralkyl which is substituted by E; R43 and R48 are independently of each other H, E; CrCi8alkyl; CrCi8aIkyi, which is substituted by E and/or interrupted by D; C2-C30heteroaryl; C7-Ci8aralkyl; C7-Ci8aralkyl which is substituted by E; D is -CO-; -COO-; -OCOO-; -S-; -SO-; -S02-; -0-; -NR5-; SiR5R6-; -POR5-; -CR9=CR10-; or - cicT E is -OR5; -SR5; -NR5R6; -COR8; -COOR7; -CONR5R6; -CN; or halogen, especially F, or CI; wherein R5 and R6 are independently of each other C6-C18aryl; C6-Ci8an/I which is substituted by Ci-Ci8alkylf CrCi8alkyl; or CrCiaalkyI which is interrupted by -0-; or R7 is C6-Ci3aryl; C6-C13an/I which is substituted by CrCiaalkylt Ci-C18alkyl; or CrC18alkyl which is interrupted by -0-; R8 is C7-Ci2aikylaryl; Ci-Ciaalkyl; or CrCi8alkyl which is interrupted by -0-; and R9 and R10 are independently of each other H, C6-C18aryl; C6-Ci8aryl which is substituted by CrCi8alkyl, CrCi8alkyl; or Ci-Ciaalkyl which is interrupted by -0-. W is preferably a group of formula R13, R13',R15andR15'areH and R20 is H, especially or R13 and R15are H, R13' and R15are independently of each other H, C and R20 is H, CrC8alkyl, or CrC8alkoxy; or R13, R15and R15' are H, and R13' and R^are R20, R15and R15'are H, and R13 and R13'are wherein R30, R31, R32 and R33are H, CrC8alkyl, or CrC8alkoxy, and X and Y are as defined above. According to the present invemfQn at feasf one of the groups W, XluTd Y, preferably two of the groups W, X and Y, most preferred all three groups W, X and Y are a group of formula Accordingly, in one preferred embodiment of the present invention the pyrimidine compound is a compound of formula I, wherein W and Y or W and X (= X and Y) are independently of ~-*P:7R"?, *1?', R"A> H^H.^H!'-,-H% H^', U*frWr\ tr^TT^ar?is coined above, """especially*K CrCaalkyl, Ci-C8alkoxy, or phenyl. R11, Rir, R12, R12', R13, R13' R15, R15', R16f R16', R17 and Rir, R41, R4V, R42, R42*, R44, R44', R45, R45', R46, R46', R47, and R4r as well as R14, R43, and R48 are preferably independently of each other H, E; or Ci-C8alkyl( especially H, CrC4alkyl, Ci-C4alkoxy, or phenyl; wherein E is -OR5; -SR5; -NR5R5; -COR8; -COOR7; -CONR5R6; -ON; -OCOOR7; or halogen, especially F; wherein R5 and R6 are independently of each other CeO^ary, or Ci-CQalkyl; R7 is C7-C12 alkylaryl, or d-C8alkyl; and R8 is C6-C12aryl; or CrCaalkyl, or R11 and R11', R12 and R12', R13 and R13', R13' and R14, R41 and R41', R4r and R43, R44 and R44', R46 and R46', R46' and R48 and/or R47' and R48 are each a divalent group In one more preferred embodiment of the present invention W, X and Y are independently of each other a group of formula H, C6-Ci8aryl; C6-Ci8aryl which is substituted by E; E, CrCi8alkyl; CrCiaalkyl which is substituted by E and/or interrupted by D; C7-C18aralkyl; C7-Ci8aralkyl which is substituted by E; and R14, R18 and R19 are as defined above, or W is a group of the formula -W1-W2-W3, X is a group of the formula O0-X2-X3 and/or Y is a group of the formula -Y^Y^Y3, wherein W\ W2, X1, X2, Y1 and Y2 are independently of each other a group of formula W, X and Y can be different, but have preferably the same meaning. Pyrimidine compounds of formula I are preferred, wherein R11, R11', R12, R12', R13, R13*, R15, R15', R16, R16', R17 and R17', R41, R4V. R42, R42', R44, R44', R45, R45', R46, R46', R47, and R47' are independently of each other H, E; or d-C8alkyl; wherein E is -OR5; -SR5; -NR5R6; -COR8; -COOR7; -CONR5R5; -CN; -OCOOR7; or halogen; wherein R5 and R6 are independently of each other C6-Ci2aryl; or CrC8alkyl; R7 is C7-C12 alkylaryi, or d-C8alkyl; and R8 is C6-C12aryl, or CrC8alkyl. Especially preferred are pyrimidine compounds of formula I, wherein W, X and Y are independently of each other a group of formula R13 and R15are Ht R13" and R15'are independently of each other H, Ci-C8alkyl, or d-Caaikoxy, R30, R31, R32and R^are KrCf--Qatkyl, or CrC£afRoxy; or wherein W, X and Y are independently of each other a group of formula wherein R18 and R19 are independently of each other CrC8alkyl. In a further preferred embodiment the present invention is directed to pyrimidine compounds of formula are independently of each other H; C6-C24aryl; C6-C24aryl which is substituted by G; d-Di8alkyl; CrC18alkyl which is substituted by E and/or interrupted by D; C7-Ci8a!kylaryl; C7-D18alkylaryl which is substituted by E and/or interrupted by D; C2-C18alkenyl; C2-Ci8alkenyl vhich is substituted by E and/or interrupted by D; C2-Ci8alkynyl; C2-Ci8alkynyl which is substituted by E and/or interrupted by D; CrC18alkoxy, d-C18alkoxy which is substituted by E and/or interrupted by D; -SR5; -NR5R6; C2-C24heteroaryi; C2-C24heteroaryl which is substituted by L; -S0R4; -SO2R4; -COR8; -COOR7; -CONR5R6; C4-Ci8cycloalkyl; C4-y18cycloalkyl which is substituted by E and/or interrupted by D; C4-C18cycloaIkenyl; C4-^scycloalkenyl which is substituted by E and/or interrupted by D; V is H; C6-C24aryl; C6-C24aryl which is substituted by G; CrC18alkyl; d-CiaalkyI which is substituted by E and/or interrupted by D; C7-C18aikyiaryi; C7-Ci8alky!aryl which is substituted by E and/or interrupted by D; C2-C18alkenyl; C2-Ci8aikenyl which is substituted by E and/or interrupted by D; C2-C13alkynyl; C2-Ci8alkynyl which is substituted by E and/or interrupted by D; CrCiaaikoxy, Ci-Ci8alkoxy which is substituted by E and/or interrupted by D; -SR5; or -NR5R6; C2-C24heteroaryl; C2-C24heteroaryl which is substituted by L; -SOR4; -SO.R4; -COR3; -COOR7; -CONR5R6; C4-Ci8cydoalkyI; C4-C13cycloa!kyl which is substituted by E and/or interrupted by D; C4-Ci8cycloalkenyl; C4-Ci8cycloalkenyl which is substituted by E and/or interrupted by D; A18 and A19 are independently of each other H, CrC18alkyi; Ci-Ci8alkyl which is substituted by E and/or interrupted by D; C6-C18aryi; C6-C18aryl which is substituted by E, B11 to B14, B21 to B24, B31 to B34 and B41 to B^are independently of each other H; C6-C18aryi; C6-Ci8aryl which is substituted by G; Ci-Ci8alkyl; Ci-C18aikyl which is substituted by E and/or interrupted by D; C7-Ci8alkylaryl; C7-C18alkylaryl which is substituted by E and/or interrupted by D; C2-Ci8alkenyl; C2-C18alkenyl which is substituted by E and/or interrupted by D; C2-Ci8aikynyl; C2-Ci8alkynyl which is substituted by E and/or interrupted by D; CrC In a preferred embodiment W and Y are groups of the formula Particularly preferred are pyrimidine compounds of the following formula: wherein V is H, or CrC8-alkyl, X3 and X4are independently of each other H, CrC8aIkyl, CrC8alkoxy, C-rCathioalkyI. or phenyl, Xs is H, or CrC8alkoxy, W5 is H( CrCsalkyl, or 0(CH2)n1-X, Y5 is H, CrC8alkylf or 0(CH2)n1-X, Y3, Y4( W3and W4 are independently of each other CrC8alkyl, CrC8a!koxy, Ci-Cathioalkyl, halogen, in particular Br, phenyl, or 0(CH2)n1-X, wherein n1 is an integer of 1 to 5 and X is - 0-(CH2)mlCH3, -OC(0)-(CH2)m1CH3, -C(0)-0-d-C8alkyl, -NR103R104, wherein rn1 is an integer of 0 to 5 and R103 and R104 are independently of each other H, or d-Ca-alkyl, or R103 and R104 together form a five or six membered heterocyclic ring, in particular wherein V is H, or CrC8alkyl, W3 is H, CrC8alkyl, or CrC8alkoxy, X3 is H, C,-C9alkoxy, phenyl or 0(CH2)n1-X, Xs is H, d-C8aIkoxy, phenyl or 0(CH2)n1-X, Y3 is H, CrC8alkyl, or d-C8alkoxy, wherein n1 is an integer of 1 to 4 and X is - 0-(CH2)m1CH3l -OC(0)-(CH2)miCH3, -C(0)-0-d-C8alkyl, wherein m1 is an integer of 0 to 5; wherein W3 and W4are independently of each other H, -NR103R104, d-Cgthioalkyl, or d- C8alkoxy, Y3 and Y4are independently of each other H, -NR103R104, d-C8thioalkyl, or d-C9alkoxy, wherein R103 and R104 are independently of each other H, or CrC8alkyl. W5 is H, d-C8alkyl, or 0(CH2)n1-X, Y5 is H, d-C8alkyl, or 0(CH2)n1-X, wherein n1 is an integer of 1 to 5 and X is -0-(CH2)m1CH3, -OC(0)-(CH2)m1CH3, -C(0)-0- d- C8alkyl, -NR103R104, wherein ml is an integer of 0 to 5 and R103 and R104 are independently of each other H, or d-C8-alkyl, or R103 and R104 together form a five or six membered heterocyclic ring, in particular wherein V, W1 to W5, X, Y1 to Y5 are as defined above, wherein V is preferably with the proviso that at least one substituent V1 to Vs is different from hydrogen; wherein W3 is H, -NR1C3R104, d-Cgthioalkyl, or CrC9alkoxy, Y3 is H( -NR103R104, CrC8thioalkyl( or CrC8alkoxy, wherein R103 and R104 are indeoendently of each other H, or Ci-C8aikyl, R101 and R102 are independently of each other H, CrCaalkyl, phenyl, or C5-C7cycioalkyl, in particular cyclohexyl; wherein Y3 is H, -NR103R104, CrC8thioalkyl, or CrC8alkoxy, X3 is H, -NR103R104, d-Cgthioalkyl, or CrC8alkoxy, wherein R103 and R104 are independently of each other H, or CrC8alkyl; ■^Y3isJJT^NR1SR1g4TCrC8lhioalkyl,orCi CuQlUoxy, X3 is H, -NR103R104, CrC8thiralkyt; orCrC8alkoxy, wherein Rm and R104 areTndependently of each other H, or CrC3alkyl, R101 and R102 are independently of each other H, CrC8alkyl, phenyl, or C5-C7cycloalkyl, in particular cyclohexyl; pyrimidine compounds of formula wherein R110 is C6-C1!raryl, such as phenyl, 1-naphthyl, 2-naphthyl, 3- or4-biphenyl, 9-phenanthryl, 2- or 9-fluorenyl, which is optionally substituted by CrC6-alkyl, or d-C^alkoxy, pyrimidine compounds of formulat^wherein ~~—-- i V is hydrogen, W and Y are independently of each other a group of formula FT, R12, R13, R14, R15, R16 and R17 are independently of each other H, Cs-C18ar/i; C6-C18aryl which is substituted by E; E, CrC18aikyl; C«-Ci8alkyl which is substituted by E and/or interrupted by D; C6-Ct8aryl; C6-Ci8aryl which is substituted by E; R18 and R19 are independently of each other H, CrC18alkyl; Ci-C«8alkyl which is substituted by E and/or interrupted by D; C6-C18aryl; C6-d8aryl which is substituted by E; D is -CO-; -COO-; -OCOO-; -S-; -SO-; -S02-; -0-; -NR5-; -SiR5R6-; -POR5-; -CR5=CR6-; or - CHC-; E is -OR5; -SR5; -NR5RS; -COR8; -COOR7; -CONR5R6; -CN; -OCOOR7; cr halcgen; wherein R5, R6, R7 and R8 are as defined above, wherein pyrimidine compounds of formula I, wherein V is hydrogen, W and Y are a group of formula The present pyrimidine comjroSn^^ to of analogous* to known procedures. The present pyrimidine compounds are for instance derivatives of known hydroxyphenyl pyrimidine compounds: US-A-3,442,898, US-A-5,597,854 and US-A-5,753,729, the relevant parts of which are hereby incorporated by reference. The present pyrimidine compounds can for instance be prepared according to or analogous to the following procedures (Suzuki aryl-aryl cross coupling reaction: Chem. Commun., 2002, 874 -875; DE-A-3001188, J. Org. Chem. Vol. 36, 1971, 3382-3385): An amidine hydrochloride is added to a 2-propen-1-one derivative in a d-C4-alcohol, like - methanol, ethanol, propanol or butanol. A base, for example, an alkali metal hydroxide or alkoxide, such as sodium methoxide or potassium hydroxide is added and the solution is stirred in the presence of oxygen, for example dry air. The pyrimidine compounds of the present invention, comprising the following units: can be prepared according to a process, which comprises reacting a derivative of formula wherein X6, V, W6, Y6 and m are as defined above, R100 stands for halogen such as chloro or bromo, preferably bromo, or E having the meaning of wherein a is 2 or 3, with boronic acid derivative or - in case R100 is not halogen - wherein Hal stands for halogen, preferably for bromo, wherein Ar is Ce-Qjo-aryl or Ca-C^-heteroaryl, which can be substituted, in the presence of an allylpalladium catalyst of the ^i-haIo(triisopropylphosphine)(ii3-alIyl)palladium(II) type (see for example W099/47474). Preferably, the reaction is carried out in the presence of an organic solvent, such as an aromatic hydrocarbon or a usual polar organic solvent, such as benzene, toluene, xylene, tetrahydrofurane, or dioxane, or mixtures thereof, most preferred toluene. Usually, the amount of the solvent is chosen in the range of from 1 to 10 I per mol of boronic acid derivative. Also preferred, the reaction is carried out under an inert atmosphere such as nitrogen, or argon. Further, it is preferred to carry out the reaction in the presence of an aqueous base, such as an alkali metal hydroxide or carbonate such as NaOH, KOHt Na2C03l K2C03f Cs2C03and the like, preferably an aqueous K2C03 solution is chosen. Usually, the molar ratio of the base to compound III is chosen in the range of from 0.5:1 to 50:1. Generally, the reaction temperature is chosen in the range of from 40 to 180°C, preferably under reflux conditions. Preferred, the reaction time is chosen in the range of from 1 to 30 hours, more preferably from 20 to 72 hours. In a preferred embodiment a usual catalyst for coupling reactions or for polycondensation reactions is used, preferably Pd-based catalyst such as known tetrakis(triarylphosphonium)-palladium, preferably (Ph3P)4Pd and derivatives thereof. Usually, the catalyst is added in a molar ratio from inventive DPP polymer to the catalyst in the range of from 100:1 to 10:1, preferably from 50:1 to 30:1. Also preferred, the catalyst is added as in solution or suspension. Preferably, an appropriate organic solvent such as the ones described above, preferably benzene, toluene, xylene, THF, dioxane, more preferably toluene, or mixtures thereof, is used. The amount of solvent usually is chosen in the range of from 1 to 10 I per mol of boronic acid derivative. The obtained inventive polymer can be isolated by well-known methods. Preferably, after cooling down the reaction mixture to room temperature, it is Doured into acetnnp and tho "oWaIhM"precipitatibn is filtered off, washed and" dried Ci-C18alkyl is a branched or unbranched radical such as for example methyl, ethyl, propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, 2-ethylbutyl, n-pentyl, isopentyl, 1-methylpentyl, 1,3-dimethylbutyl, n-hexyl, 1-methylhexyl, n-heptyl, isoheptyl, 1,1,3,3-tetramethylbutyl, 1-methylheptylt 3-methylheptyl, n-octyl, 2-ethylhexyl, 1,1,3-trimethylhexyl, 1,1,3,3-tetramethylpentyl, nonyl, decyl, undecyl, 1-methylundecyl, dodecyl, 1,1,3,3,5,5-hexamethylhexyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, or octadecyl. Ci-C18Alkoxy radicals are straight-chain or branched alkoxy radicals, e.g. methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, sec-butoxy, tert-butoxy, amyloxy, isoamyloxy or tert-amyloxy, heptyloxy, octyloxy, isooctyloxy, nonyloxy, decyloxy, undecyloxy, dodecyloxy, tetradecyloxy, pentadecyloxy, hexadecyloxy, heptadecyloxy and octadecyloxy. C2-C18Alkenyl radicals are straight-chain or branched alkenyl radicals, such as e.g. vinyl, allyl, methallyl, isopropenyl, 2-butenyl, 3-butenyl, isobutenyl, n-penta-2,4-dienyl, 3-methyl-but-2-enyl, n-oct-2-enyl, n-dodec-2-enyl, isododecenyl, n-dodec-2-enyl or n-octacec-4-enyl. C2.24Alkynyl is straight-chain or branched and preferably C2.aalkynyl, which may be unsubstituted or substituted, such as, for example, ethynyl, 1-propyn-3-yl, 1-butyn-4-yl, 1-pentyn-5-yl, 2-methyl-3-butyn-2-yl, 1,4-pentadiyn-3-yl, 1,3-pentadiyn-5-yl, 1-hexyn-6-yl, cis-3-methyl-2-penten-4-yn-1-yl, trans-3-methyl-2-penten-4-yn-1-ylf l,3-hexadiyn-5-yl, 1-octyn-8-yl, 1-nonyn-9-yl, 1-decyn-10-yl or 1-tetracosyn-24-yl, C4-C18cycioalkyl is preferably Cs-Ci2cycloalkyl, such as, for example, cyclopentyl, cyciohexyl, cycloheptyl, cyclooctyl, cyclononyl, cyclodecyl, cyclododecyl. Cyciohexyl and cyciododecyl are most preferred. The term "aryl group" is typically C6-C3oaryl, such as phenyl, indenyl, azulenyl, naphthyl, biphenyl, terphenylyi^or quadphenylyi, as-indacenyl, s-indacenyl, acenaphthylenyl, phenanthryl, fluoranthenyl, triphenlenyl, chrysenyl, naphthacen, picenyl, peryienyl, pentaphenyl, hexacenyl, pyrenyl, anthracenyl, terphenylyl or quadphenylyi, which can be substituted or unsubstituted, preferably phenyl, 1-naphthyl, 2-naphthyl, 9-phenanthryl, 2- or 9-fluorenyl, 3- or 4-biphenyl, which may be unsubstituted or substituted. Examples of C6-Ci8aryl are phenyl, 4-methylphenylt 4-methoxyphenyl, 1-naphthyl, 2-naphthyl, 3- or 4-biphenyl, 9-phenanthryl, 2- or 9-fluorenyl, which may be unsubstituted or substituted. C7-C24aralkyl radicals are preferably C7-Ci5aralkyl radicals, which may be substituted, such as, for example, benzyl, 2-benzyl-2-propyl, (3-phenethyl, a,a-dimethylbenzyl, to-phenyi-butyl, ophenyl-octyl, co-phenyl-dodecyl or 3-methyl-5-(1',1',3,,3,-tetramethyl-butyl)-benzyl, The term "heteroaryl group", especially C2-C3oheteroap/I, is a ring, wherein nitrogen, oxygen or sulfur are the possible hetero atoms, and is typically an unsaturated heterocyclic radical witb-iive-ta 1&- atoms-having at loa6t six eonjugatod w■QlQotfons-swfr^O'-thionylr benzo[b]thienyl, dibenzo[b"ti]thieriyf( thianthrenyl, furyf, furfuryl, 2H-pyranyr,' benzoTurahyFT" isobenzofuranyl, 2H-chromenyl, xanthenyl, dibenzofuranyl, phenoxythienyl, pyrrolyl, imidazolyl, pyrazolyl, pyridyl, bipyridyl, triazinyl, pyrimidinyl, pyrazinyl, 1H-pyrrolizinyl, isoindolyl, pyridazinyl, indolizinyl, isoindolyl, indolyl, 3H- indolyl, phthalazinyl, naphthyridinyl, quinoxalinyl, quinazolinyl, cinnolinyl, indazolyl, purinyl, quinolizinyl, chinolyl, isochinolyl, phthalazinyl, naphthyridinyl, chinoxalinyl, chinazolinyl, cinnolinyl, pteridinyl, carbazolyl, 4aH-carbazolyl, carbolinyl, benzotriazolyl, benzoxazolyl, phenanthridinyl, acridinyl, perimidinyl, phenanthroiinyl, phenazinyl, isothiazolyl, phenothiazinyl, isoxazolyl, furazanyl or phenoxazinyl, preferably the above-mentioned mono- or bicyclic heterocyclic radicals, which may be unsubstituted or substituted. Examples of a five or six membered ring formed by R5 and R6 and R103 and R104, respectively are heterocycloalkanes or heterocycloalkenes having from 3 to 5 carbon atoms which can have one additional hetero atom selected from nitrogen, oxygen and sulfur, for example Possible substituents of the above-mentioned groups are d-C8alkyl, a hydroxy! group, a mercapto group, d-C8alkoxy( d-C8alkylthio, halogen, halo-Ci-Cgalkyl, a cyano group, an aldehyde group, a ketone group, a carboxyl group, an ester group, a carbamoyl group, an amino group, a nitro group or a silyl group. As described above, the aforementioned radicals may be substituted by E and/or, if desired, interrupted by D. Interruptions are of course possible only in the case of radicals containing at least 2 carbon atoms connected to one another by single bonds; C6-Ci8aryl is not Jntemiptftrl; interrupted arylalkyl oralkylaryl egnjajnj VM unit D in ,ttis alt Ci8alkyl substituted by one ormora'ET^ by one or more units D is, for example, (CH2CH20)n-Rx, where n is a number from the range 1-9 and R* is H or d-du—j. or C2-C10alkanoyl (e.g. CO-CH(C2H5)dH9), CH2-CH(ORy,)-CH2-0-Ry, where Ry is d-daalkyl, C5-Ci2cycloalkyl, phenyl, C7-C15phenylalkyl, and Ry' embraces the same definitions as Ry or isH; d-C8alkylene-COO-Rz, e.g. CH2COORz,CH(CH3)COORz, C(CH3)2COORzl where R2 is H, CrC18alkyl, (CH2CH20)i.3-Rx, and Rx embraces the definitions indicated above; CH2CHrO-CO-CH=CH2;CH2CH(OH)CH2-0-CO-C(CH3)=CH2. To obtain organic layers of this invention with the proper Tgi or glass transition temperature, it is advantageous that the present organic compounds have a melting point greater than about 150°C, for example greater than about 200°C, for example greater than about 250°C for instance greater, than about 300°C. The electroluminescent devices of the present invention are otherwise designed as is known in the art, for example as described in U.S. Pat. Nos. 5,518,824, 6,225,467, 6,280,859, 5,629,389, 5,486,406, 5,104,740, 5,116,708 and 6,057,048, the relevant disclosures of which are hereby incorporated by reference. For example, organic EL devices contain one or more layers such as: substrate; base electrode; hole-injecting layer; hole transporting layer; emitter layer; electron-transporting layer; electron-injecting layer; top electrode; contacts and encapsulation. This structure is a general case and may have additional layers or may be simplified by omitting layers so that one layer performs a plurality of tasks. For instance, the simplest organic EL device consists of two electrodes which sandwich an organic layer that performs all functions, including the function of light emission. A preferred EL device comprises in this order: - - (a) an anode, (b) a hole injecting layer and/or a hole transporting layer, (c) a light-emitting layer, (d) optionally an electron transporting layer and (e) a cathode. In particular, the present organic compoui^s-function as light emitters-ahcf afe-contatnedHrir ' the light emission layer or form the light-emitting layer. The light emitting compounds of this invention exhibit intense fluorescence in the solid state and have excellent electric-field-applied light emission characteristics. Further, the light emitting compounds of this invention are excellent in the injection of holes from a metal electrode and the transportation of holes; as well as being excellent in the injection of electrons from a metal electrode and the transportation of electrons. They are effectively used as light emitting materials and may be used in combination with other hole transporting materials, other electron transporting materials or other dopants. The organic compounds of the present invention form uniform thin films. The light emitting layers may therefore be formed of the present organic compounds alone. Alternatively, the light-emitting layer may contain a known light-emitting material, a known dopant, a known hole transporting material or a known electron transporting material as required. In the organic EL device, a decrease in the brightness and !i'e caused by quenching can be prevented by forming it as a multi-layered structure. The light-emitting material, a dopant, a hole-injecting material and an electron-injecting material may be used in combination as required. Further, a dopant can improve the light emission brightness and the - light emission efficiency, and can attain the red or blue light emission. Further, each of the hole transporting zone, the light-emitting layer and the electron transcorting zone may have the layer structure of at least two layers. In the hole transporting zone in this case, a layer to which holes are injected from an electrode is called "hole-injecting layer", and a layer which receives holes from the hole-injecting layer and transport the holes to a light-emitting layer is called "hole transporting layer". In the electron transporting zone, a 'aver to which electrons are injected from an electrode is called "electron-injecting layer", and a layer which receives electrons from the electron-injecting layer and transports the electrons to a light-emitting layer is called "electron transporting layer". These layers are selected and used depending upon factors such as the energy level and heat resistance of materials and adhesion to an organic layer or metal electrode. The light-emitting material or the dopant which may be used in the light-emitting layer together with the organic compounds of the present invention includes for example anthracene, naphthalene, phenanthrene, pyrene, tetracene, coronene, chrysene, fluorescein, perylene, phthaloperylene, naphthaloperylene, perincne, phthaoperinone, naphthaloperinone, diphenylbutadiene, tetraphenylbutadiene, coumarine, oxadiazole, aldazine, bisbenzoxazoline, bisstyryl, pyrazine, cyclopentadiene, quinoline metal complex, aminoquinoline metal complex, benzoquinoline metal complex, imine, diphenylethylene, vinyl anthracene. diaminocarbazole, pyrant thiopyran, polymethine. merocyanine. *n imirtazntft-chelated oxynoid compound^ qumacridone, rubrene, and fluorescent dyestuffsfof a-dyestuff-laser or for brightening. If the pyrimidine compounds of the formula I are used as host, the weight ratio of the pyrimidine compound (host) to the guest compound is in general 50:50 to 99.99:0.01, preferably 90:10 to 99.99:0.01, more preferably 95:5 to 99.9:0.1, most preferably 98:2 to 99.9:0.1. The pyrimidine compounds of the present invention and the above compound or compounds that can be used in a light-emitting layer may be used in any mixing ratio for forming a light-emitting layer. That is, the organic compounds of the present invention may provide a main component for forming a light-emitting layer, or they may be a doping material in another main material, depending upon a combination of the above compounds with the organic compounds of the present invention. The hole-injecting material is selected from compounds which are capable cf transporting holes, are capable of receiving holes from the anode, have an excellent erect of'injecting holes to a light-emitting layer or a light-emitting material, prevent the movement of excitons generated in a light-emitting layer to an electron-injecting zone or an electron-injecting material and have the excellent capability of forming a thin film. Suitable hole-injecting materials include for example a phthalocyanire derivative, a naphthaiocyanine derivative, a porphyrin derivative, oxazole, oxadiazole, triazole, imidazole, Imidazolone, imidazolthicne, pyrazoiine, pyrazolone, tetrahydroimidazole, oxazole, oxadiazole, hydrazone, acylhydrazcne, polyarylalkane, stiibene, butadiene, benzidine type triphenylamine, styryiamine type triphenylamine, diamine type triphenylamine, derivatives cf these, and pclyrner materials such as pciyvinyicarbazcie, polysilane and an electroccnducting polymer. In the organic EL device of the present invention, the hole-injecting material which is more effective is an aromatic tertiary amine derivative or a phthalocyanine derivative. Although not specially limited, specific examples of the tertiary amine derivative include triphenylamine, tritolylamine, tolyidiphenyiamine, N.N'-diphenyl-N.N'^S-methylphenyO-l.l-biphenyW,*- diamine, N.N.N'.N'-te^^methylphenylJ-I.V-phenyW.^-diamine, NININ',N,-tetra(4- methylphenyi)-1,1 '-biphenyl-4,4'-diamine, N,N'-diphenyi-N,N'-di(1 -naphthyl)-1,1 '-biphenyl- 4,4'-diamine, N,N'-di(methylphenyl)-N,N,-di(4-n-butylphenyl)-phenanthr8ne-9,10- diamine, 4,4', 4M-tris(3-methylphenyl)-N-phenylamino)triphenylamine, 1,l-bis(4-di-p- tolylamincphenyl)cyclohexane, and oligomers or polymers having aromatic tertiary amine structures of these. Although net specially limited, specific examples of the phthalocyanine (Pc) derivative include phthalocyanine derivatives or naphthalocyanine derivatives such as H2Pc, CuPc, CoPc^NiPc^ZnPc, PdPc. FePc. MnPc. ClAlPn pinaPn ninPr n*rP~ c.\»Ri9r ^n)A;Pn... (HO)GaPc? VOPc, TiOPc, MoOPGrafi4GaPe-0-SaPc. ^ ..-.^■^■.: ..-..».««-.. The hole transporting layer can reduce the driving voltage of the device and improve the confinement of the injected charge recombination within the pyrimidin light emitting layer. Any conventional suitable aromatic amine hole transporting materials described for the hole-injecting layer may be selected for forming this layer. A preferred class of hole transporting materials is comprised of 4,4,-bis(9-carbazolyl)-11V-biphenyl compounds of the formula wherein R61 and R52 is a hydrogen atom or an d-Caalkyl group; R63 through R66 are substituents independently selected from the group consisting of hydrogen, a CrC6aikyl group, a CrC6alkoxy group, a halogen atom, a dialkylamino group, a C6-C3Caryi group, and the like. Illustrative examples of 4,4,-bis(9-carbazolyl)-1,1'-biphenyl compounds include 4,4'- bis(9-carbazoiyl)-l,l'-biphenyl and 4)4,-bis(3-methyl-9-carbazcly!)-1I4,-biphenyi! and the like. The electron transporting layer is not necessarily required fcr the present device, but is optionally and preferably used for the primary purpose of improving the electron injection characteristics of the EL devices and the emission uniformity. Illustrative examples of electron transporting compounds, which can be utilized in this layer, include the metal chelates of 8-hydroxyquinoline as disclosed in U.S. Pat. Ncs. 4,539,507, 5,151,629. and 5,150,006, the disclosures of which are totally incorporated herein by reference. Although not specially limited, specific examples of the metai complex compound inciude lithium 8-hydroxyquinolinate, zinc bis(8-hydroxyquinolinate), ccccer bis(8- hydroxyquinolinate), manganese bis(8-hydroxyquinolinate), aluminum tris(8- hydroxyquinolinate), aluminum tris(2-methyl-8-hydroxyquinolinate), gallium tris(8- hydroxyquinolinate), beryllium bis(10-hydroxybenzo[h]quinolinate), zinc" - bis(10- hydroxybenzo[h]quinolinate), chlorogallium bis(2-methyl-8-quinolinate), gallium bis(2-methyl- 8-quinolinate)(o-cresoiate), aluminum bis(2-methyl-8-quinolinate)(1-naphthclate), gallium bis(2-methyl-8-quinolinate)(2-naphtholate), gallium bis(2-methyl-8-quinolinate)phenolate, zinc bis(o-(2-benzooxazolyl)phenoiate), zinc bis(o-(2-benzcthiazolyl)pher.olate) and zinc bis(o-(2- benzotrizolyl)phenolate). The nitrogen-containing five-membered derivative is preferably an . oxazole, thjazole^thjadiazolft, or friflznlft-riffrivafivff Although, not spffrfrlly 'imitpr^ sparrific examples of the above--ftitfegefv-eonta^ derivative--'-tnetecfe 2;5-ctsfH-' phenyl)-1,3,4-oxazole, 1,4-bis(2-(4-methyl-5-phenyloxazoly!)benzene, 2,5-bis(1 -phenyl)- 1,3,4-thiazole, 2,5-bis(1 -phenyl)-1,3,4-oxadiazole, 2-(4'-tert-butylphenyl)-5-(4"-biphenyl)1,3,4- oxadiazole, 2,5-bis(1 -naphthyl)-1,3,4-oxadiazole, 1,4-bis[2-(5-phenyloxadiazciyl)]benzene, 1,4-bis[2-(5-phenyloxadiazolyl)-4-tert-butylbenzene], 2-{4'-tert-butylphenyi)-5-(4"-biphenyi)- 1,3,4-thiadiazole, 2,5-bis(1 -naphthyl)-1,3,4-thiadiazole, 1,4-bis[2-(5-phenylthiazolyl)]benzene, 2-(4,-tert-butylphenyl)-5-(4"-biphenyl)-1,3?4-triazole, 2,5-bis(1 -naphthy l)-1 f 3,4-triazole and 1,4-bis[2-(5-phenyltriazolyl)]benzene. Another class of electron transport materials are oxadiazole metal chelates, such as bis[2-(2-hydroxyphenyl)-5-phenyl-1,3,4- oxadiazolato]zinc; bis[2-(2-hydroxyphenyl)-5-phenyl-1,3,4-oxadiazolato]ben/llium; bis[2-(2- hydroxyphenyl)-5-(1 -naphthyl)-1,3,4-oxadiazolato]zinc; bis[2-(2-hydroxyphenyl)-5-(1 - naphthyl)-1(3,4-oxadiazolato]beryllium; bis[5-biphenyl-2-(2-hydroxyphenyl)-1,3,4- oxadiazolato]zinc; bis[5-biphenyl-2-(2-hydroxyphenyl)-1,3,4-oxadiazolato]ber/ilium; bis(2- hydroxyphenyl)-5-pher,yl-1,3,4-oxadiazolato]lithium; bis[2-(2-hydroxypher;y!r3-p-:olyl-* ,3,4- oxadiazolato]zinc; bis 2-(2-hydroxyphenyl)-5-p-tolyl-1,3,4-oxadiazolato]beryllium; bis[5-(p- tert-butylphenyl)-2-(2-hydroxyphenyl)-1,3,4-oxadiazolato]zinc; bis[5-(p-tert-butylphenyl)-2-(2- hydroxyphenyl)-1,3,4-oxadiazolato]beryllium; bis[2-(2-hydroxyphenyl)-5-(3-?Iuorophenyl)- 1,3,4-oxadiazoiato]zinc; bis[2-(2-hydroxyphenyl)-5-(4-fluoropheny!)-"! ,3,4-oxadiazolatc]zinc; bis[2-(2-hydroxyphenyl)-5-(4-fiuorophenyl)-1l3l4-oxadiazoIato]beryllium; bis[5-{4- chiorophenyl)-2-(2-hydroxyphenyl)-1f3,4-oxadiazolato]zinc; bis[2-(2-hydroxy phenyl)-5-(4- methoxyphenyl)-1,3,4-oxadiazoiato]zinc; bis[2-(2-hydroxy-4-methylphenyi)-5-phenyi-1,3,4- oxadiazolatojzinc; bis^-.alpha.^-hydroxynaphthylJ-S-phenyl-I.S^-oxadiazolatoJzinu; bis[2- (2-hydroxyphenyl)-5-p-pyridyl-1,3,4-oxadiazoIato]zinc; bis(2-(2-hydroxyphenyl)-5-p-pyridyl- 1,3,4-oxadiazciatojberyllium; bis^^-hydroxyphenyO-S^-thiophenyl)-.^^- oxadiazolatojzinc; bisp^-hydroxyphenyOo-phenyl-I.S^-thiadiazolatolzinc; bis[2-(2- hydroxyphenyl)-5-phenyt-1,3,4-thiadiazolato]beryiiium; bis[2-(2-hydroxyphenyi)-5-(1- naphthyl)-1,3,4-thiadiazolatojzinc; and bis[2-(2-hydroxyphenyl)-5-(1 -naphthyl)-1,3,4-thiadiazolato]beryl!ium, and the like. In the organic EL device of the present invention, the light-emitting layer may contain, in addition to the light-emitting organic material of the present invention, at least one of other light-emitting material, other dopant, other hoie-injecting material and other electron-injecting material. For improving the organic EL device of the present invention in the stability against temperature, humidity and ambient atmosphere, a protective layer may be formed on the surface of the device, or the device as a whole may be sealed with a silicone oil, or the like. The electrically conductive material used for the anode of the organic EL device is suitably selected from those materials having a work function of greater than 4 eV. The electrically . conductive material includes!^ ircnr cobattr-nicked tungsten-, silver, gold, platinum, palladium, alloys of these, metal oxides such as tin oxide and indium oxide used for ITO substrates or NESA substrates, and organic electroconducting polymers such as polythiophene and polypyrrole. The electrically conductive material used for the cathode is suitably selected from those having a work function of smaller than 4 eV. The electrically conductive material includes magnesium, calcium, tin, lead, titanium, yttrium, lithium, ruthenium, manganese, aluminum and alloys of these, while the electrically conductive material shall not be limited to these. Examples of the alloys include magnesium/silver, magnesium/indium and lithium/aluminum, while the alloys shall not be limited to these. Each of the anode and the cathode may have a layer structure formed of two layers or more as required. For the effective light emission of the organic EL device, at least one of the electrodes is desirably sufficiently transparent in the light emission wavelength region of the device. Further, the substrate is desirably transparent as well. The transparent electrode is produced from the above electrically conductive material by a deposition method or a sputtering method such that a predetermined light transmittance is secured. The electrode on the light emission surface side has for instance a light transmittance of at least 10%. The substrate is not specially limited so long as it has adequate mechanical and thermal strength and has transoarency. For example, it is selected from glass substrates and substrates of transparent resins such as a polyethylene substrate, a polyethylene terephthalate substrate, a poiyether sulfone substrate and a polypropylene substrate. In the organic EL device of the present inventicn, each layer can be formed by any one of dry film forming methods such as a vacuum deposition method, a sputtering method, a plasma method and an ion piating method and wet film forming methods such as a spin coating method, a dipping method and a flow coating method. The thickness of each layer is not specially limited, while each layer is required to have a proper thickness. When the layer thickness is tco large, inefficiently, a high voltage is required to achieve predetermined emission of light. When the layer thickness is too small, the layer is Hable to have a pinhole, etc., so that sufficient light emission brightness is hard to obtain when an eiectric field is applied. The thickness of each layer is for example in the range of from about 5 nm to about 10 urn, for instance about 10 nm to about 0.2 jim. In the wet film forming method, a material for forming an intended layer is dissolved or dispersed in a proper solvent such as ethanol, chloroform, tetrahydrofuran and dioxane, and a thin film is formed from the solution or dispersion. The solvent shall not be limited to the above solvents. For improving the film formability and preventing the occurrence of pinholes in any layer, the above solution or dispersipji jorfor^ a proper roctfv— and a proper additive. Th4"_"resia"ttiat can-J»-used includes fnsutattt^ resfns stictT":as^^ polystyrene, polycarbonate, polyarylate, polyester, poiyamide, polyurethane, polysulfone, poiymethyl methacrylate, polymethyl acrylate and cellulose, copolymers of these, photoconductive resins such as poly-N-vinylcarbozole andpolysilane, and electroconducting polymers such as polythiophene and polypyrrole. The above additive includes an antioxidant, an ultraviolet absorbent and a plasticizer. When the light-emitting organic material of the present invention is used in a light-emitting layer of an organic EL device, an organic EL device can be improved in organic EL device characteristics such as light emission efficiency and maximum light emission brightness. Further, the organic EL device of the present invention is remarkably stable against heat and electric current and gives a usable light emission brightness at a low actuation voltage. The problematic deterioration of conventional devices can be remarkably decreased. The organic EL device of the present invention has significant industrial values since it can be adapted for a flat panel display of an on-wall televisicn set, a fiat light-emitting device, a light source for a copying machine or a printer, a light source for a liquid crystal display or counter, a display signboard and a signal light. The material of the present invention can be used in the fields of an organic EL device, an electrophotographic photoreceptor, a photoelectric converter, a solar cell, an image sensor, dye lasers and the like. The following Examples illustrate the invention. In the Examples and throughout this application, the term light emitting material means the present pyrimidine compounds. Examples Example 1 (A-1) To 1.00 g (2.69 mmol) of educt 1 (prepared according to US-A-3,442,898 from resorcinol and 4,6-dichloro-2-phenyl-pyrimidine; J. Org. Chem. 1988, 53, 4137) in 20 m! water free DMF 3.29 g (21,5 mmol) methyl-bromoacetate and 2.97 g (21.5 mmol) potassium carbonate are added. The reaction mixture is stirred at 100 °C under nitrogen for 2 h- Tfip ruction m'**-'"* is diluted with water. The orcjaffc pftase is~extoe±Kt--with dichiorom^harie^wd dried with magnesium sulfate. The solvent is removed. After chromatography of the crude product on silica gel with toluene / ethyl acetate 8/2 the desired product is obtained. Melting point: 178.0 -179.0 °C. Example 2 (A-2) To 520 mg (1.16 mmol) of educt 2 (prepared according to US-A-3,442,898 from resorcinol and 4,6-dichloro-2-biphenyl-pyrimidine; EP-A-96657) in 20 ml water free DMF 1.42 g (9.28 mmol) methyi-bromoacetate and 1.28 g (9.28 mmol) potassium carbonate are added. The reaction mixture is stirred at 100 °C under nitrogen for 2 h. The reaction mixture is diluted with water. The organic phase is extracted with dichloromethane und dried with magnesium sulfate. The solvent is removed. After chromatography of the crude product on silica gei with toluene / ethyl acetate 9/1 and later 7/3 the desired product is obtained. Melting point: 119.5 -121.5 °C. To 4.31 g (16.1 mmol) of 1,3-bis(4-methoxyphenyl)-2-propen-1-one in 25 mi water free ethanol 1.89 g (8.11 mmol) biphenylbenzamidine hydrochlorid are added. A solution of 1.07 g (19.08 mmol) potassium hydroxide is added during 15 min. Dry air is bubbled through the reaction mixture. The reaction mixture is refluxed for 24 h. The reaction mixture is poured "into waterVThe solid isTHterect^off and^a^hed with water. The product is cr/s^iiized 2 times from acetic acid (96-98 %). Melting point: 168-169 °C. Example 4 (B-1) To 5.00 g (16.1 mmol) of 1,3-bis-onaphthy-2-propen-1-one (1) in 25 ml water free ethanol 1.89 g (8.11 mmol) biphenylbenzamidine hydrochloric] are added. A solution of 1.07 g (19.08 mmol) potassium hydroxide in 25 ml water free ethanol is added during 15 min. Dry air was bubbled through the reaction mixture. The reaction mixture is refluxed for 24 h. The reaction mixture is poured into water. The solid is filtered off and is washed with water. The product is crystallized 2 times from acetic acid (96-98 %). Melting point: 226-230 °C. To 5.00 g (16.1 mmol) of 1,3-bis-a-naphthy-2-propen-1-one (1) in 25 ml water free ethanol 1.27 g (8.11 mmol) benzamidine hydrochlorid are added. A solution of 1.07 g (19.08 mmol) potassium hydroxide in 25 ml water free ethanol is added during 15 min. Dry air is bubbled through the reaction mixture. The reaction mixture is refluxed for 24 h. The reaction mixture is poured into water. The solid is filtered off and is washed with water. The product is crystallized from acetic acid (96-98 %). Melting point: 179-180 °C. To 4.50 g (8.74 mmoi) of the 2-propen-1-one derivative shown above in 50 ml water free ethanol 1.37 g (8.74 mmol) benzamicline hydrochloride are added. A solution of 1.15 g (20.6 mmol) potassium hydroxide in 50 ml water free ethanol is added during 15 min. Dry air is bubbled through the reaction mixture. The reaction mixture is refluxed for 24 h, poured into water and the water phase is extracted with dichloromethane. The organic phase is dried with magnesium sulfate, the solvent is removed by distillation and the remaining residue is purified by column chromatography (toluene / hexane 2/1). 1H-NMR (300 MHz, CDCI3): 5= 8.75-8.72 (m,4H); 8.45-8.37 (m, 12H); 8.04-7.82 (m, 6H); 7.67-7.50 (m, 12h). Example 7 (G-1) To 14.6 g (0.100 mol) of tetralone and 15.0 g (1.10 mol) p-methoxy-benzaidehyd in 100 ml absolute methanol 660 mg potassium hydroxide are added. The reaction mixture is refluxed for 18 h under argon and then cooled to 25 °C. The formed product is filtered off and washed with methanol. To 6.61 g (25.0 mmol) of said product in 50 ml water free ethanol 1.96 g (12.5 mmol) benzamidine hydrochloride are added. A solution of 1.65 g (25.0 mmol) potassium hydroxide in 50 ml water free ethanol is added during 15 min. Dry air is bubbled through the reaction mixture. The reaction mixture is refluxed for 24 h and then poured into water. The water phase is extracted with dichloromethane. The organic phase is dried with magnesium sulfate, the solvent is removed by distillation and the remaining residue is purified by column chromatography (toluene / hexane 1/1). The product G-1 having a rhelting point of 169 °C is obtained. a) 24,9 g (0.134 mol) 4-bromo-benzaldehyde and 26.8 g 4-brbmo-acetophenone (0.134 mol) are dissolved under argon in 120 ml methanol. To this solution 0.270 g sodium hydroxide are added. The reaction mixture is stirred for 5 h. The formed yellow product is filtered off and is washed with water and then methanol. The product is dried in a vacuum oven (yield: 44.2 g (90 %), melting point: 183-184 °C). b) To 5.00 g (13.7 mmol) of 1,3-bis-(4-bromophenyl)-2-propen-1-one (1) in 25 ml water free ethanol 1.61 g (6.83 mmol) 4-bromo-benzamidine hydrochloride are added under argon. A solution of 0.90 g (16.1 mmol) potassium hydroxide in 25 ml water free ethanol is added during 15 min. Dry air is bubbled through the reaction mixture. The reaction mixture is refluxed for 24 h and then poured into water. The product is filtered off, washed with ethanol and dried in a vacuum oven (melting point: 321 - 322 °C). c) To 1.00 g (1.83 mmol) of tris-2,4(6-(4-bromo-phenyl)-pyrimidine and 1.27 g ( 6.42 mmol) of 4-biphenylboronic acid in 20 ml toluene 5.27 g (16.19 mmol) CsC03 in 3 ml water are added under argon. Approximately 10 mg of the Pd catalyst (WO 99/47474) are added and then the reaction mixture is refluxed for 5 h. The product is filtered off, washed with water and acetone. The product is dissolved in dichloromethane and filtered on silica gel. The solvent is removed in vacuum. The obtained product has a melting point of 364 - 367 °C. To 264 mg (1.0 mmol) of the pyrimidine (see scheme above) in 20 ml chloroform 454 mg (2.0 mmol) DDQ are added. The reaction mixture is refluxed for 1 day. Additional 908 mg (4.0 mmol) of DDQ are added and the reaction mixture is refluxed for additional 2 days. The reaction mixture is filtered on silica gel with dichloromethane. A column chromatography on silica gel with toluene gives the desired product in 61 % yield (mp. 163 -165 °C). a) 10.0 g (57.2 mol) 3,4-dimethoxy-benzaldehyde and 10.3 g (57.2 mol) 3,4-dimethcxy- acetophenone are dissolved under argon in 50 ml methanol. To this solution 0.34 g sodium hydroxide are added. The reaction mixture is stirred for 22 h at 40 3C. The reaction mixture is cooled to 0 °C and the precipitated product is filtered off. The product is dried in vacuum (yield: 18.2 g (97 %), melting point: 108 - 110 °C). b) To 7.00 g (21.3 mmol) of 1,3-bis-(3,4-dimethoxy-phenyl)-2-propen-1-one (1) in 40 ml water free ethanol 1.67 g (10.7 mmoi) benzamidine hydrochloride are added under argon. A solution of 1.41 g (25.1 mmol) potassium hydroxide (85%) in 40 ml water free ethanol is —added during 20 minrDry^rtrl^ refluxed for 48 h and then poured Into water. The product is filtered off and washed with ethanol. A column chromatography on silica gel with toluene gives the desired product J-1 (melting point: 157-158 °C). a) 10.0 g (57.2 mol) 2,4-dimethoxy-benzaldehyde and 10.3 g 2,4-dimethoxy-acetophenone (57.2 mol) are dissolved under argon in 50 ml methanol. To this solution 0.34 g sodium hydroxide are added. The reaction mixture is stirred for 48 hr at 40 °C. The reaction mixture is diluted with water and the precipitated product is filtered off. The product is washed with water and dried in vacuum (melting point: 127-129 °C). b) To 6.60 g (20.1 mmol) of 1,3-bis-(2,4-dimethoxy-phenyl)-2-propen-1-one (1) in 40 ml water free ethanol 2.34 g (10.1 mmol) biphnenyl-benzamidine hydrochloride are added under argon. A solution of 1.41 g (25.1 mmol) potassium hydroxide (85%) in 40 ml water free ethanol is added during 15 min. Dry air is bubbled through the reaction mixture. The reaction mixture is refluxed for 48 h and then poured into water. The water phase is extracted with dichloromethane. The organic phase is dried with MgSCU and the solvent is removed in vacuum. A column chromatography on silica gel with toluene/hexane 3/2 give the desired product J-2 (melting point: 165 - 167 °C). To 5.50 g (15.2 mmol) of 1,3-bis-(2f4-dimethoxy-phenyl)-2-propen-1-one (1) in 30 ml water free ethanol 0.87 g (9.14 mmol) guanidine hydrochloride are added under argon. A solution of 1.21 g (21.5 mmol) potassium hydroxide (85%) in 30 ml water free ethanol is added during 15 min. Dry air is bubbled through the reaction mixture. The reaction mixture is refluxed for 48 h and then poured into water. The water phase is extracted with dichloromethane. The organic phase is dried with MgS04 and the solvent is removed in vacuum. A column chromatography on silica gel with dichloromethane/ethyl acetate 2/1 gives the desired product (melting point: 211-213 °C). a) To a suspension of 0.69 g sodium hydride in 25 mi terahydrofurane (THF) 5.38 g (27.4 mmol) 4-acetyl-biphenyl are added at 0 °C under argon. After 1 h 5.00 g (27.4 mmoi) 4-bihenylcarbadehyde in 25 ml THF are added. The reaction mixture is stirred for 19 h at 25 °C. The formed precipitate is filtered off and washed with THF. The product is refluxed for 1 h in 100 mi iso-propanoi and 30 ml water. The product is filtered off and dried in vacuum. i a) 18.3 g (0.100 mol) 2,4-dimethoxy-benzaIdehyde and 12.1 g (0.100 mol) 3-acethyl pyridine are dissolved under argon in 100 ml methanol. To this solution 0.66 g sodium hydroxide are added. The reaction mixture is refluxed for 18 h. The reaction mixture is poured into water and extracted with dichloromethane. The organic phase is dried with MgS04 and the solvent is removed in vacuum. A column chromatography on silica gel with toluene/ethyl acetate 2/1 give the desired product (yield: 7.3 g (27 %)). a) To 10.0 g (27.3 mmol) of 1,3-bis-(4-bromophenyl)-2-propen-1-one in 70 ml ethanoi 2JA£L "7TT3-7 mmol) benzamidine hyctacbtarideare added under argon. A solution of 1.80 g (32.1 mmol) potassium hydroxide (85%) in 50 ml ethanoi is added during 15 min. Dry air is bubbled through the reaction mixture. The reaction mixture is refluxed for 24 h and then is poured into water. The product is filtered off, washed with water and 10 % tartaric acid, crystallized from glacial acetic acid and washed with ethanoi (yield: 9.2 g (58 %); melting point: 203 -205 °C). b) To 4.45 g (9.55 mmol) 4,6-tris-(p-bromophenyl)-2-phenyl-pyrimidine in 200 ml toluene 2.99 g (19.1 mmol) 4-chloro-phenylboronic acid are added. The suspension is refluxed under argon. Argon is passed through the reaction mixture. 9.33 g (28.6 mmol) of caesium carbonate in 6 ml water are added dropwise to the reaction mixture. Then 0.40 g of the catalyst are added. The reaction mixture is refluxed for 16 h and then the solids are filtered off. The solvent is removed in vacuum. The residue is dissolved in dichloromethane a~nd is washed with water. The organic phase is dried with magnesium sulfate. The solvent is removed in vacuum. The product is crystallized from 100 ml ethanol (yield: 99 %; melting point: 258 - 259 °C). c) To 1.00 g (1.89 mmol) 4,6-bis-(p-bromophenyl)-2-phenyl-pyrimidine in 45 ml toluene 287 mg (1.89 mmol) 4-metoxy-biphenylboronic acid are added. Argon is passed through the reaction mixture. 1.23 g (3.78 mmol) of caesium carbonate in 6 ml water is added dropwise to the reaction mixture. Then 20 mg of the catalyst is added. The reaction mixture is refluxed for 18 h. Additional 4-methoxy-biphenylboronic acid and caesium carbonate is added in a 1 to 1 molar ratio until the reaction is complete. The product is filtered off and is washed with ethanol, water and again ethanol. The product is dissolved in boiling DMF, filtered on super gel (Fluka 56678, CAS [91053-39-3]) and crystallized (yield: 0.90 g (71 %); melting point: 345-348 °C). 1.0 g (1.83 mmoi) 2,4,6-tris-(p-bromophenyl)-pyrimidine> 1.49 g (8.26 mmol) 1,1-diphenylethylen, 40 mg PalIadium-(II)-acetate, 150 mg (1.47 mmoi) dimethylglycine, 1.39 g (16.5 mmol) sodium hydrogen carbonate and 70 mg (0.46 mmol) FeCI3 are dissolved in 8 ml N-methyl-pyrrolidone. The reaction mixture is heated for 48 h at 150 °C. The reaction mixture is poured into water and 20 % hydrochloric acid is added. The water phase is extracted with dichloromethane. The organic phase is dried with magnesium sulfate. The solvent is distilled off. A column chromatography (silica gel, toluene/hexane 1/3) result in the desired product (119.5- 120.5 °C). The product is synthesized as described in Example 31 of CH-A-542212. Application Example 1 Present compounds A1, A2, A3, B1, B2, C1, G1 and H1 as light emitting materials, respectively, 2,5-bis(1-naphthyl)-1,3l4-oxadiazole and a polycarbonate resin in a weight ratio of 5:3:2 are dissolved in tetrahydrofuran, and the solution is spin-coated en a cleaned glass substrate with an ITO electrode to form a light-emitting layer having a thickness of 100 nm. An electrode having a thickness of 150 nm is formed thereon from a magnesium/indium alloy having a magnesium/Indium mixing ratio of 10/1, to obtain an organic EL device. The device exhibits light emission with excellent brightness and efficiency at a direct current voltage cf 5 V. Application Example 2 Compounds A1, A2, A3, B1, B2, C1, G1 and H1, respectively, are vacuum-deposited on a cleaned glass substrate with an ITO electrode to form a light-emitting layer having a thickness of 100 nm. An electrode having a thickness of 100 nm is formed thereon from a magnesium/silver alloy having a magnesium/silver mixing ratio of 10/1, to obtain an organic EL device. The light-emitting layer is formed by deposition under a vacuum of 10s Torr at a substrate temperature of room temperature. The device shows emission having an excellent brightness and efficiency at a direct current voltage of 5 V. Application Example 3 Compounds A1, A2, A3, B1, B2, C1, G1 and H1, respectively, are dissolved in methylene chloride tetrahydrofuran, and the solution-is spin-coated on a cleaned glass substrate with an ITO electrode to form a light-emitting layer having a thickness of 50 nm. Then, aluminum bis(2-methyl-8-quinolinate)(2-naphtolate) is vacuum-deposited to form an electron-injecting layer having a thickness of 10 nm, and an electrode having a thickness of 100 nm is formed thereon from a magnesium/aluminum alloy having a magnesium/aluminum mixing ratio of 10/1, to obtain an organic EL device. The light-emitting layer and the electron-injecting layer are formed by deposition under a vacuum of 106 Torr at a substrate temperature of room temperature. The device shows an emission having an excellent brightness and efficiency at a direct current voltage of 5 V. Application Example 4 Compounds A1, A2T A3, B1, B2t C1, G1 and H1, respectively, are vacuum-deposited on a cleaned glass substrate with an ITO electrode to form a light-emitting layer having a thickness of 50 nm. Then, aluminum tris(8-hydroxyquinolinate) is vacuum-deposited to form an electron-injecting layer having a thickness of 10 nm and an electrode having a thickness of 100 nm is formed thereon from an aluminum/lithium alloy having an aluminum/lithium mixing ratio of 50/1, to obtain an organic EL device. A hole-injecting layer and the light- emitting layer are formed by deposition under a vacuum of 106 Torr at a substrate temperature of room temperature. The device shows a light emission having an excellent brightness and efficiency at a direct current voltage of 5 V. Application Example 5 One of hole-injecting materials (H-1) to (H-6) is vacuum-deposited on a cleaned glass substrate with an ITO electrode, to form a hoie-injecting layer having a thickness of 30 nm. Then, one of light-emitting materials A1, A2, A3, B1, B2, C1, G1 and H1, respectively is vacuum-deposited to form a light-emitting layer having a thickness of 30 nm. Further, one of electron-injecting materials (E-1) to (E-6) is vacuum-deposited to form an electron-injecting layer having a thickness of 30 nm. An electrode having a thickness of 150 nm is formed thereon from a magnesium/silver alloy having a magnesium/silver mixing ratio of 10/1, to obtain an organic EL device._ Each layer is formed under a vacuum of 106 Torr at a substrate temperature of room temperature. All the organic EL devices obtained in these Examples shows high brightness and efficiency. Application Example 6 On a cleaned glass substrate with an ITO electrode, 4I4,,4,,-tris(N-(3-methylphenyl)-N-phenylamino)triphenylamine is vacuum-deposited to form a first hole-injecting layer having a thickness of 25 nm. Further, a hole-injecting material (H-1) is vacuum-deposited to form a second hole-injecting layer having a thickness of 5 nm. Then, compounds A1, A2, A3, B1, B2, C1, G1 and H1, respectively, as light-emitting materials are vacuum-deposited to form a light-emitting layer having a thickness of 20 nm. Further, an electron-injecting material (E-1) is vacuum-deposited to form an electron-injecting layer having a thickness of 30 nm. Then, an electrode having a thickness of 150 nm is formed thereon from a magnesium/silver alloy having an magnesium/silver mixing ratio of 10/1, to obtain an organic EL device. The device shows emission having an outstandina brinhtnpc 5 V. Application Example 7 On a cleaned glass substrate with an ITO electrode, 4,4\4Mris(N-(1-naphthyl)-N-phenylamino)triphenylamine is vacuum-deposited to form a first hole-injecting layer having a thickness of 25 nm. Further, a hole-injecting material (H-2) is vacuum-deposited to form a second hole-injecting layer having a thickness of 5 nm. Then, compounds A1, A2, A3, 81, B2, C1, G1 and H1, respectively, as light-emitting materials are vacuum-deposited to form a light-emitting layer having a thickness of 20 nm. Further, an electron-injecting materia! (E-5) is vacuum-deposited to form an electron-injecting layer having a thickness of 30 nm. Then, an electrode having a thickness of 150 nm is formed thereon from a magnesium/silver alloy having an magnesium/silver mixing ratio of 10/1, to obtain an organic EL device. The device shows an emission having a outstanding brightness and efficiency at a direct current voltage of5V. Application Example 8 A hole-injecting materia! (H-5) is vacuum-deposited on a cleaned glass substrate with an ITO electrode to form a hole-injecting layer having a thickness of 20 nm. Then, compounds A1, A2, A3, B1, B2, C1, G1 and H1, respectively, as light-emitting materials are vacuum-deposited to form a light-emitting layer having a thickness of 20 nm. Further, an electron-injecting material (E-2) is vacuum-deposited to form a first electron-injecting layer Having a thickness of 20 nm. Then, an electron-injecting material (E-5) is vacuum-deposited to form a second electron-injecting layer having a thickness of 10 nm, and an electrode having a thickness of 150 nm is formed thereon from a magnesium/silver alloy having an magnesium/silver mixing ratio of 10/1, to obtain an organic EL device. The device shows light emission having an excellent brightness and efficiency at a direct current voltage of 5 V. Application Example 9 An organic EL device is prepared in the same manner as in Example 5 except that the light-emitting layer is replaced with a 30 nm thick light-emitting layer formed by vacuum-depositing compounds A1, A2, A3, B1, B2, C1, G1 and H1, respectively, and one of the dopant compounds (D-1) to (D-7) in a weight ratio of 100:1. All the organic EL devices obtained in these Examples-shows high -brightness, characteristics and gives intended-light emission —. ... colors. Application Example 10 An organic EL device is prepared In the same manner as in Example 5 except that the light-emitting layer is replaced with a 30 nm thick light-emitting layer formed by vacuum-depositing compounds A1, A2, A3, B1, 82, C1, G1 and H1, respectively and one of Compounds (D-1) to (D-7) in a weight ratio of 100:1. All the organic EL devices obtained in these Examples shows high brightness characteristics, or a maximum brightness and gives intended light emission colors. Application Example 11 A hole-injecting material (H-2) is vacuum-deposited on a cleaned glass substrate with an iTO electrode to form a hole-injecting layer having a thickness of 30 nm. Then, 4,^-bis(a,o diphenylyinyl)biphenyl and a light-emitting material selected from compounds A1, A2, A3, 31, B2, C1, G1 and H1 for a light-emitting layer are vacuum-deposited in a weight ratio of 100:5 to form a light-emitting layer having a thickness of 30 nm. Further, an electron-Injecting material (E-3) is vacuum-deposited to form an electron-injecting layer having a thickness of 30 nm. Then, an electrode having a thickness of 150 nm is formed thereon from a magnesium/silver alloy having an magnesium/silver mixing ratio of 10/1, to obtain an organic EL device. The device shows an emjssjqn having .an. outstanding brightneoo and efficiency" at a direct current voltage of 5 V. Application Example 12 An organic EL device is prepared in the same manner as in Example 11 except that the light-emitting layer is replaced with a 30 nm thick light-emitting layer formed by vacuum-depositing aluminum tris(3-hydroxyquinoiinate) and one of the light-emitting materials A1, A2, A3, 81, B2, C1, G1 and H1 in a weight ratio of 100:3. Ail the organic EL devices obtained in these Examples shows high brightness characteristics at a direct current of 5 V. The organic EL devices obtained in the Application Examples of the present Invention show an excellent light emission brightness and achieved a high light emission efficiency. When the organic EL devices obtained in the above Examples are allowed to continuously emit light at 3 (mA/cm2), all the organic EL devices remain stable. Since the light-emitting materials of the present invention have a very high fluorescence quantum efficiency, the organic EL devices using the light-emitting materials achieved light emission with a high brightness in a low electric current applied region, and when the light-emitting layer additionally uses a doping material, the organic EL devices are improved in maximum light emission brightness and maximum light emission efficiency. Further, by adding a doping material having a different fluorescent color to the light-emitting material of the present invention, there are obtained light-emitting devices having a differen^ght emission color. Ths-organic-lk devices- of the present invention accomplish improvements in light emission efficiency and light emission brightness and a longer device life, and does not impose any limitations on a light-emitting material, a dopant, a hole-injecting material, an electron-injecting material, a sensitizer, a resin and an electrode material used in combination and the method of producing the device. The organic EL device using the material of the present invention as a light-emitting material achieves light emission having a high brightness with a high light emission efficiency and a longer life as compared with conventional devices. According to the light-emitting material of the present invention and the organic EL device of the present invention, there can be achieved an organic EL device having a high brightness, a high light emission efficiency and a long life. Claims t. An electroluminescent device comprising an anode, a cathode and one or a plurality of organic compound layers sandwiched therebetween, in which said organic compound layers comprise an organic compound containing one ore more pyrimidine moieties. I. An electroluminescent device according to claim 1, wherein the organic compound is a pyrimidine compound of formula V is C6-C3oaryl or C2-C30heteroaryl, which can be substituted or unsubstituted, in particular , HC1_C18alkyyl1C1-c18aIkyl which is substituZted by E and/or interrupted by D; C2-C18alkenyl, C2-C18alkenyl which is substituted by E and/or interrupted by D; C2-Ci8alkynyl; C2-Ci8alkynyl which is substituted by E and/or interrupted by D; d-C18alkoxy; CrC18alkoxy which is substituted by E and/or interrupted by D; -SR5; -NR5R6; W is C6-C3oaryl or C2-C30heteroaryl, which can be substituted or unsubstituted, in particular H, Crdsalkyl; Ci-C18alkyl which is substituted by E and/or interrupted by D; C2-C18alkenyi, C2-C18alkenyl which is substituted by E and/or interrupted by D; C2-C18alkynyl; C2-Ci8alkynyl which is substituted by E and/or interrupted by D; CrCiaalkoxy; Ci-C18aIkoxy which is substituted by E and/or interrupted by D; -SR5; -NR5R6; Y is C6-C3oaryl or CrCtjcheteroaryl, which can be substituted or unsubstituted, in particular ., H, CrC18alkyl; d-Ci8alkyl which is substituted by E and/or interrupted by D; C2-Ci3aikenyl, C2-C18alkenyl which is substituted by E and/or interrupted by D; C2-Ci8alkynyl; C2-Ci8alkynyl which is substituted by E and/or interrupted by D; Ci-Ci8alkoxy; Ci-Ci8alkoxy which is substituted by E and/or interrupted by D; -SR5; -NR5R6; X is C6-C3oaryl or CrC^heteroaryi, which can be substituted or unsubstituted, in particular , H, CrCi8alkyl; Ci-C18alkyl which is substituted by E and/or interrupted by D; C2-Ci8alkenyl, C2-Ci8alkenyl which is substituted by E and/or interrupted by D; C2-Ci8alkynyl; C2-Ci8alkynyl which is substituted by E and/or interrupted by D; CrCi8alkoxy; CrC18alkoxy which is substituted by E and/or interrupted by D; -SR5; -NR5R6; wherein the groups V1 to V5, W1 to W5, X1 to X5ahdT* to Y5 are independently of each"Dth^rH; halogen, " C6-C24aryl; C5-C24aryl which is substituted by G; CrCi8aikyl; CrCiaalkyl which is substituted by E and/or interrupted by D; C7-Ci8alkylaryl; C7-C18alkylaryl which is substituted by E and/or interrupted by D; C2-d8alkenyl; C2-C18aikenyl which is substituted by E and/or interrupted by D; , wherein Ar1 is C6-C30aryl or C2- C3oheteroaryl, especially phenyl, Ar2 is C6-C3oaryl or CrC30heteroaryl, especially phenyl, or H, C2-Ci8alkynyl; C2-C18alkynyl which is substituted by E and/or interrupted by D; CrC13alkoxy, CrCi8alkoxy which is substituted by E and/or interrupted by D; -SR5; -NR5R3; C2-C24heteroaryl; C2-C24heteroaryl which is substituted by L; -SOR4; -S02R4; -COR3; -COOR7; -CONR5R6; C4-C18cycloalkyl; C4-C18cycloaikyl which is substituted by E and/or interrupted by D; C4-Ci8cycloaIkenyl; C4-Ciacycloalkenyl which - -is substituted by E and/or interrupted by D; or W5 or Y5 together with V form a group -CR92-, -CR92-CRV. -C(=0)CR32-. -C(=0)-, or -CR9=CR9-, or wherein R9 is H; d-daalkyl, d-C^aikyl which is interrupted by-O-, CQ-C13aryl, Cs-C18aryl which is substituted by d-d8alkyl, or d-daalkoxy, or one of the substituents V, W, X, or Y is a group of the formula -Z, -Ar-Z, wherein Ar is C5-C24aryl or C2-C24heteroaryl, which can be substituted, in particular one of the substituents V1 to V5, W1 to W5, X1 to X5, or Y1 to Y5 is a group of the formula -Z\ -Ar-Z', wherein Ar is C6-C24aryl or d-C^heteroaryl, which can be substituted, in "particular wherein A1, B1 and B2 are independently of each other H; C6-C8aryl; C6-Ci8aryl which is substituted by G; d-d8alkyl; C-Cealkyl which is substituted by E and/or interrupted by D; C7-Ci8alkylaryl; C7-C18alkylaryl which is substituted by E and/or interrupted by D; C2-Ci8alkenyl; C2-C18alkenyl which is substituted by E and/or interrupted by D; C2-C18alkynyi; CrC18alkynyl which is substituted by E and/or interrupted by D; C-Ciealkoxy, d-daalkoxy which is substituted by E and/or interrupted by D; -SR5; -NR5R6; Crdgheteroaryl; C2-C8heteroaryl which is substituted by L; -SOR4; -S02R4; -COR8; -COOR7; -CONR5R6; C4-Ci8cycloalkyl; C4-C18cydoalkyl which is substituted by E and/or interrupted by D; C4-C18cycloalkenyl; C4-Ci8cycloaikenyl which is substituted by E and/or interrupted by D; or two substituents A1, B\ B2 or B' and B2 form a five to seven membered ring, which can be substituted, m is an integer of 1 to 4; and W1, W2, Y\ Y2, X1, X2, V, W, X and Y are as defined above; D is -CO-; -COO-; -OCOO-; -S-; -SO-; -S02-; -0-; -NR5-; -SiR5R6-; -POR5-; -CR5=CR6-; or -CHC-; E is -OR5; -SR5; -NR5R6; -COR8; -COOR7; -CONR5R6; -CN; -OCOOR7; or halogen; G is E; K; heteroaryl; heteroaryl which is substituted by C6-C18aryl; C6-C18aryl which is substituted by E and/or K; K is d-Ciaalkyl; d-C18alkyl which is substituted by E and/or interrupted by D; Cy Ci8aikyiaryl which is substituted by E and/or interrupted by D; C2-Ciaaikenyi; C2- C18alkenyl which is substituted by E and/or interrupted by D; C2-d8alkynyl; C2- C18alkynyl which is substituted by E and/or interrupted by D; d-d8alkoxy, Ci- - Ci3aIkoxy which is substituted by E and/or interrupted by.D; C4-C13cycloalkyl; C4- Ci8cycioalkyl which is substituted by E and/or interrupted by D; C4-Ci8cycloaIkenyI; or C4-C18cycIoalkenyl which is substituted by E_and/or interrupted by D; _ L is E; K;C6-Ci3aryl; or C6-Ci8aryl which is substituted by G, E and/or K; R4 is C6-C18aryl; C6-Ci8aryl which is substituted by CrCi8alkyI, CrC18aikoxy; d- C18alkyl; or d-Ciaalkyl which is interrupted by -0-; R5 and R6 are independently of each other H; C6-d8aryl; C6-C18aryl which is substituted by d-C18alkyl, CrCi8alkoxy; Ci-C18alkyl; or d-daalkyl which is interrupted by-O-; or R7 is H; C8-Ci8aryl; C6-Ci8aryl which is substituted by Ci-C18alkylf d-C^alkoxy; Cr C18alkyi; CrCi8alkyl which is interrupted by-O-; R8 is H; C6-C18aryl; C6-C18aryl which is substituted by d-C^alky!, CrC18alkoxy; Cr Ci8alkyl; CrCi8alkyl which is interajpted by-O-. or two substituents selected from V1 to V5, W1 to W5, X1 to X5( Y1 to Y5 which are in neighborhood to each other form a five to seven membered ring, with the proviso that at least one of the groups V, Wf X and Y is a Cs-C24aryl, or C2~ C24heteroaryl group, which can be substituted. 3. An electroluminescent device according to claim 2, comprising a pyrimidine compound of formula C18alkyl which is substituted by E and/or interrupted by D; C2-C18alkenyl, C2-Ci8alkenyl which is substituted by E and/or interrupted by D; CrCi8alkynyl; C2-C18alkynyl which is substituted by E and/or interrupted by D; Ci-d8alkoxy; CrC18alkoxy which is substituted by E and/or interrupted by D; -SR5; or -NR5R6; wherein W1 to W5, X1 to X5, Y1 to Y5, E, Dt R5and R8 are as defined in claim 2; and V is H. 4. An electroluminescent device according to claim 2, comprising a pyrimidine compound of formula V, W' to W5, X1 to X5 and Y1 to Y5 are as defined in claim 2, especially W3, X3 and Y3 are selected from the group consisting of C6-C24aryl; C6-C24aryl which is substituted by G; C2-C24heteroaryl; C2-C24heteroaryl which is substituted by L, Crd3aikoxy, -SR5; -NR°R6, wherein G, L, R5 and R6 are as defined in claim 2, V is H, and W1 and W5, Y1 and Y5 as well as X1 and X5 are independently of each other H; C-rCi8alkyl; or d-Ciaalkyl which is substituted by E and/or interrupted by D, wherein E and D are as defined in claim 2. 5. An electroluminescent device according to claim 2, wherein V is a group of the formula H, CrCt8alkyl; CrC18alkyl which is substituted by E and/or interrupted by D; C2-Ci8alkenyl, C2-C18alkenyl which is substituted by E and/or interrupted by D; C2-C18alkynyl; C2-C18alkynyl which is substituted by E and/or interrupted by D; Ci-C18alkoxy; Ci-C18alkoxy which is substituted by E and/or interrupted by D; -SR5; or -NR5R6; and by E and/or interrupted by D; C2-C18alkenyl, C2-C1salkenyl which is substituted by E and/or interrupted by D; C2-C18alkynyl; C2-C18alkynyl which is substituted by E and/or interrupted by D; CrC18alkoxy; CrC18aIkoxy which is substituted by E and/or interrupted by D; -SR5; or -NR5R6; wherein W1 to W5, D, V1 to V5, E, A\ B\ B2, R5, R6, m and Z are as defined in claim 2 and R101 and R'02 are independently of each other H, Ci-C3alkyl, C5-C24aryl, or drdcycioalkyi, in particular H or d-4-alkyi. 6. An electroluminescent device according to claim 2, comprising a pyrimidine compound of formula , or W11 to W15, 7/21 to W25, W31 to W35, W41 to W45, Y1' to Y15, Y21 to Y25t Y2' to Y35 and Y41 to Y45 are independently of each other H; C6-C24aryl; C6-C24aryl which is substituted by G; d-Ci8alkyl; Ci-C18alkyl which is substituted by E and/or interrupted by D; C7-C18alkylaryl; C7-C18alkylaryl which is substituted by E and/or interrupted by D; C2-Ci8alkenyl; C2-C18alkenyl which is substituted by E and/or interrupted by D; C2-C16alkynyl; C2-C18alkynyl which is substituted by E and/or interrupted by D; d- d3alkoxy, CrCiaaikcxy which is substituted by £ ano'or Interrupted by 0; -5RJ: -NR3R8; C2-C24hetercaryl; Ca-C^hetercary! which is substituted by L; -SCR4; -SC2R4; -COR3; -CCOR7; -CCNR5R6; d-dacycloalkyl; d-C-.cvcicaiky1 whic.~ s substituted by E and/cr interrupted by D; CrC-3cycicaikenyi; d-dacycicaiker.yl wnicr is substituted by E and/cr interrupted by D; V is H; Cc-C24aryi; C6-C24aryi whicn ;3 substitutec by G; 0-C-3a;kyi: C--Cr3aiky wnich is substitutec by E and/cr inierructec bv D; Cr-daaikvsar/i; C—C-^aikvian/i v/ric'^. :s substitutec by E and/cr interrupted cy 0; C2-d3aikeny:; C:-d3aikenyi which is substitutec by E and/cr interrupted by D; C2-C«8aikyr>i; CrC^aikyny: ;vr;ch is substituted by E and/cr interrupted by D; d-C13aikcxy\ d-daaikcxy wnich is substituted by E and/cr interrupted by D; -SR5; cr -NR3R°; d-C^heterbar/i; C-:-C24hetercanyi which is substituted by L; -SCR4; -S02R4; -COR3; -CCCR7; -CCNR5R5; GrCigcycicaikyl; d-dacycloalkyl which is substituted by E and/or interrupted by D; d-d.gcycioalkenyl; C4-d3cycioaikenyi which is substituted by E and/or interrupted cy D; A13 and A*5 are independently-of each other H, Ci-d8aikyi; d-d3alkyi whicn ;s substitutec by E and/cr interrupted by D; C6-C13aryi; d-d3any! which is substituted by 311 to B14 and 321 to B24 are independently of each other H; Cs-C13aryf; Cs-C13ar/i which is substituted by G; Ci-d3alkyl; Ci-Ci8alkyl which is substituted by E and/or interrupted by D; C7-daaikylaryl; C7-Ciaalkylaryl which is substituted by E and/cr interrupted by D; C2-d3alkenyi; C2-Ci8alkenyl which is substituted by E and/cr interrupted by D; C2-d3aIkynyl; C2-d3alkynyi which is substituted by E and/or interrupted by D; d-d3alkoxy, CrCiaaikcxy which is substituted by E and/or interrupted by D; -SR5; -NR5R6; C2-C18heteroaryi; C2-d3heteroaryl which is substituted by L; -S0R4; -502R4; -COR8; -COOR7; cr -CONR5R6; d-C18cycioa!kyl; d-dacycloalkyl which is substituted by E and/or interrupted by D; d-d3cycioaikenyi; d-dacycloalkeny! which is substituted by E and/or interrupted by D, especially H; wherein D, E, G, L, R4, R5, R6, R7and R3 are as defined in claim 2. An electroluminescent device according to claim 2, wherein the pyrimicine compound has the following formula wherein V :s H, cr C--C3-aiky!, X3 and X4ara independently d each ether H, C or phenyl, X5 is H, or C--Cgalkoxy, W5 is H, C«-C3alkyl, or 0(CH2)nl-X, Y5 is H, d-Cgalkyl, or 0(CH2)nrX, Y3, Y4, W3and W* are independently of each other Ci-C8alkylf Ci-Csaikcxy, C«- C9thioalkyi, halogen, in particular Br, phenyl, or 0(CH2)ni-X, wherein n* '$ an integer cf 1 to 5 and X is -0-(CH2)m1CH3, -OC(0)-(CH2)m1CH3, -C(0)-0-CrC9aikyl. -MR1C3R104, wherein ml is an inteaer of 0 to 5 and R103 and R*04 are independent!*/ cf each other H, or Ci-C8-alkyI, or R103 and R1W together form a five or six membered heterocyclic ring, wherein V is H, or Ci-C3alkyl, W3 is H, Ci-C3alkyl, or CrC8aIkoxy, X3 is H, CrC=alkoxy, phenyl or 0(CH2)ni-X, X5 is H, Ci-C3alkoxy, phenyl or 0(CH2)n1-X, Y3 is H, 0:-e=alkyi, or d-C8alkoxyt wherein n1 is an integer cf 1 to d arc X is -0-{CH2)mlCK, -OC(0)-(CH2)mlCH3, -C(0)-0-Ci-C9alkyl, wherein ml .3 an integer of 0 to 5; or the following formula wherein W3 and W4are independently of each other H, -NR"03R1W, C--C6;hioalkyi. cr CrCsalkoxy, Y3 and Y4ar= independently of each other H, -NR'^R104, d-Cgthioaikyl, or C;- C3alkoxy, wherein Riraand RTWare independently of each other R, or C W5 is H, Ci-C3alkyl, or 0(CH2)nl-X, Y5 is H, d-Csalkyi, or 0(CH2)nl-X, wherein n1 is an integer of 1 to 5 and X is -0-(CH2)m1CH3, -OC(0)-(CH2)m1CH3l -C(0)-0-Ci-C3aikyl, -NR103R104, wherein ml is an integer of 0 to 5 and R103 and R'04 are independently of each other H, or CrC8-alkyl, or R103 and R,C4 together form a five Y3 :s H, -NR'^R"04, d-Cgthioalkyl, or C,-C9aikoxy, wherein R:C3 arc nu are independently of each ether H, cr C-Cgalkyl, R"v and R'02 are independently cf each other H, CrCgalky!. ohenyj. cr 2±-C;cvcicalkvi, In particular cvclchexvl; or the follcwina formula wherein Y3 is H, -NR1C3R;C4, CvCgthioalkyi, or Ci-C3alkcxy, X3 is H, -NR':3RW, CrCgthicaikyl, or d-C8alkoxy, wherein R'C3 and R'w are independently of each other H, or Ci-Cgaikyl; or the following formula Y3 is H, -NR1C3R104, d-Cgthioalkyl, or CrC8aIkoxy, X3 is H, -NR1C3R'04, CrC3thioaikyI, or CrC8alkoxy, wherein R103 and R'34 are independently of each other H, or CrC3aIkyl, and R101 and R102 are independently cf each other H, C«-C8alkyl, phenyl, or Cs-C/cycloalkyl, in particular cyclohexyl. An electroluminescent device according to ciaim 2, wherein W and Y are groups of the formula -* I ' ^ 1 I J i 1-4 I W An electroluminescent device according to claim 2, comprising a pyrimldine compound of formula I, wherein V is hydrogen, W and Y are independently of each other a group of formula R'\ R'2, ~'3; ?.4Jm, R'°, R'3 and R:7 are independently of aach ether -, 35-C13ar/!; Cs-G^aryl which .s substituted by 5; E, C«-Ci3alkyl; Ci-C-3a;kyi which is suostituted by 5 and/or interrupted by D; C6-C13aryl; C5-Ciaar/I which is sucstitLtac by E; R13 and R'3 are Independently or each other H, C--C-aaiky!; C-C^aikyl which is substituted cy E and/or interrupted by D; C6-C13ary!; CrC^an/l which :s substituted by D is -CC-; -CCO-: -OCGO-; -S-; -SO-; -S02-; -0-; -MR5-; -3iR5R5-: -~CR5-; -CR;=CR°-; or -C=C-: E is -OR5; -3R3; -NR5R3; -COR3; -COOR7; -CONR5R6; -CM; -OCOCR7: or halogen; wherein R5, R3, R7 and Ra are as defined in claim 2. I. An electroluminescent device according to claim 2, comprising a pyrirr.idine compounc of formula R110 is C=-C.rar/I, C6-C ■ or W1.1 to W15, W21 to W25, W31 to W3S, W41 to W45, Y11 to Y15, Y21 to Y25, Y31 to Y35 and Y41 to Y45 are independently of each other H; C6-C24aryl; C6-C24aryl which is substituted by G; Ci-C18alkyl; Ci-Ci8alkyl which is substituted by E and/or interrupted by D; Cr Ci8aikylaryl; C7-C18alkylaryl which is substituted by E and/or interrupted by D; C2-Ci8alkenyl; C2-C18alkenyi which is substituted by E and/or interrupted by D; C2-Ci8alkynyl; C2-C18alkynyl which is substituted by E and/or interrupted by D; Cr Ci8alkoxy, Ci-d8alkoxy which is substituted by E and/or interrupted by D; -SR5; -NR5R6; C2-C24heteroaryi; C2-C24heteroaryl which is substituted by L; -SOR4; -SO2R4; -COR8; -COOR7; -CONR5R6; C4-C18cycloalkyl; C4-C18cycIoalkyl which is substituted by E and/or interrupted by D; C4-C18cycIoalkenyl; C4-Ci8cycloalkenyl which is substituted by E and/or interrupted by D; V is H; C6-C24aryl; C6-C24aryl which is substituted by G; Ci-C18aikyi; CrCi8alkyl which is substituted by E and/or interrupted by D; C7-C18alky!aryl; C7-C18alkylaryl which is substituted by E and/or interrupted by D; C2-Ci8aikenyl; C2-Ci9alkenyl which is substituted by E and/or interrupted by D; C2-Ci8alkynyl; C2-C*salkynyl which is substituted by E and/or interrupted by D; d-dsalkoxy, CrC18alkoxy which is substituted by E and/or interrupted by D; -SR5; or -NR5R6; C2-C24heteroaryl; C2-C24heteroaryl which is substituted by L; -SOR4; -S02R4; -COR3; -COOR7; -CONR5R6; C4-C18cycloalkyl; C4-Ci8cycloalkyl which is substituted by E and/or interrupted by D; C4-Ci8cycloalkenyl; C4-Ci8cycloalkenyl which is substituted by E and/or interrupted by D; A ° and A are independently of each other H, CrC18alkyl; d-Ci8alky! which is substituted by E and/or interrupted by D; C6-Ci8aryl; C6-Ci8aryl which is substituted by E, B11 to B14 and B21 to B24 are independently of each other H; C6-C18aryl; C6-C18aryl which is substituted by G; d-Ci8aIkyl; CrCi8alkyl which is substituted by E and/or interrupted by D; CrCi8alkyIaryl; C7-Ci8alkylaryl which is substituted by E and/or interrupted by D; C2-Ci8alkenyl; C2-Ci8alkenyl which is substituted by E and/or interrupted by D; C2-C18alkynyi; C2-C18alkynyl which is substituted by E and/or interrupted by D; d-C18alkoxy, CrC18alkoxy which is substituted by E and/or interrupted by D; -SR5; -NR5R6; C2-C18heteroaryl; C2-Ci8heteroaryl which is substituted by L; -SOR4; -S02R4; -COR8; -COOR7; or -CONR5R6; C4-C18cycloaIkyi; C4-Ciacycloalkyl which is substituted by E and/or interrupted by D; C4-C18cycloalkenyl; C4-C18cycloalkenyl which is substituted by E and/or interrupted by D; wherein D, E, G, L, R4, R5, R6, R7and R8 are as defined in claim 2. A pyrimidine compound of formula I according to claim 12, wherein R«i R4s-) R46> R46'_ R47 and R4r afe jndependent!y of each other H, E, C6-C18aryl; Cs-C13aryl which-is substituted by E; d-dsalkyl; d-d8alkyl which is substituted by E and/or interrupted by D; C7-d8aralkyl; or C7-C18aralkyi which is substituted by E; or R1l'and R12, R12' and RjM^Iand R16, R16' and R17, R44' and-H^and/oj^-afld R-47are- each a divalent groups L1 selected from an oxygen atom, an sulfur atom, >CR118R119 R4l R50 >SiR118R119,or ' %% .wherein R118 and R119 are independently of each other d-daalkyl; d-d8alkoxy, C6-C18aryl; Cr Cl8aralkyl; R11 and R11', R12 and R12\ R13 and R13', R13' and R14, R14 and R1S, R15 and R15', R16 and R16', R17' and R17, R41 and R41', R42 and R42', R4? and R43, R4r and R43, R44 and R44', R45 and R45', R46 and R46', R47 and R4r, R46' and R48 and/or R47* and R48 are each a divalent R\R31 R33_/~\_R30 group v ' , wherein R30, R31,' R22, R33, R49 and R50 are independently of each other H, d-dsa!kyl; d- d8alkyl, which is substituted by E and/or interrupted by D; E; C6-C-3aryl; C6-C18aryi, which is substituted by E; R14 is H, C2-d0heteroaryl, C6-C30aryl, or C6-C30aryl which is substituted by E, d- d8alkyl; or d-daalkyl which is substituted by E and/or interrupted by D; especially .-r, R"-, R^, R- , R-~, ri^° and r~ are incepenaerrly cf each ether H, =, C-C^aik;-; 3--C19aikyi which is substituted by E and/or irteructec by C; E: Cr-C-3araiky!; Z-- C'3araiky! which is substituted by E; R"*3 and R*13 are Independently cr each ether H, E; C'-C-3aiky;: 3--C-3a.kyh whicn 's substituted by E and/or interruptec by 0: CrCcchereroaryl: Cr-C^araikyf; C-C^aralky1 which is sucstituted by E; D is -CO-; -CG0-; -CCGO-; -S-; -SO-; -SOr; -0-; ->>P^: SiR5R5-; -~CR5-; -CR3=CR:J-; cr -C-C-; E is -OR5; -3R5; -NR5R3; -COR3; -COOR7; -CCNR3Ra: -ON; or haicger., especially F, cr CI; wherein R° and R3 are independently of each ether Cs-Ciaaryl; C«-C«3aryl which is substituted cy Ci-C13alkyl, CrC^alkyi; or Ci-C13aiky; which is interrupted by -O-; or R7 is Cs-C«3aryi; C6-C R3 is C7-C«2alkylaryl; CrCi8alkyl; or d-Ciaalkyl which is interrupted cy -0-; and R9 and R:" are independently of each other H, C5-C13aryi; CrC substituted by CrCi3aikyl, Ci-Ci8alkyl; or CrCi3aikyi which is interrupted by -0-. 15. A pyrimidine compound according to claim 14, wherein V is hydrogen, 15. A pyridine scmpcur.c according :o claim "2 of ;cr~ua Rn0 is C6-CiC-arylt such as phenyl, 1-naphthyi, 2-naphthyl, 3- or 4-eiphenyi, 9-phenanthryl, 2- or 9-fIuorenyi, which is optionally substituted by d-Cs-alkyl, or C

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