Title of Invention | "A PROCESS FOR THE PREPATATION OF OPTICALLY ACTIVE SUBSTITUTED ALPHA-AMINO-INDANE DERIVATIVES" |
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Abstract | "NEW PROCESS FOR THE SYNTHESIS OF SUBSTITUTED ALPHA AMINOINDAN DERIVATIVES" A process for the preparation of optically active substituted alpha-indanyl amide derivatives of formula (1), which comprise*: - an asymmetric hydrogenation reaction of an en-amide derivative of formula (III) in presence of hydrogen and an optically active catalyst, in order to obtain an amide derivative of formula (II), a hydrolysis reaction of the amide derivative of formula (II) obtained in the previous step, in order to obtain optically active substituted alphaindanyl amide derivatives of formula (I). Formula (1), Formula (I!) and Formula (III), |
Full Text | We Claim: 1. A process for the preparation of optically active substituted alpha-amino-indane derivatives of formula (I): (Formula Removed) wherein m is an integer equal to 0, 1, 2 or 3, R1 is a hydrogen atom, an alkyl group having from 1 to 20 carbon atoms, an aryl group having from 6 to 20 carbon atoms, an alkylaryl group having from 6 to 20 carbon atoms, an alkaloyl group, an aryloyl group, which comprises the steps of: (i)an asymmetric hydrogenation reaction of an en-amide derivative of formula (III) (Formula Removed) wherein m and R1 are as defined above, R2 is a hydrogen atom, an alkyl group having from 1 to 20 carbon atoms, an aryl group having from 6 to 20 carbon atoms, an alkylaryl group having from 6 to 20 carbon atoms, in the presence of hydrogen, an optically active catalyst and a solvent, to obtain an amide derivative of formula (II) : (Formula Removed) (ii)a hydrolysis reaction of the amide derivative of formula (II) obtained in the previous step, to obtain optically active substituted alpha-amino-indane derivatives of formula (I) wherein the optically active catalyst used in the asymmetric hydrogenation of the en-amide derivative of formula (III) is represented by a chiral phosphine transition metal complex of formula (VIIA) (Formula Removed) Wherein M is ruthenium (Ru), X is a halogen atom selected in the group comprising chlorine (C1), bromine (Br), fluorine (F) and iodine (I), Z is an aryl group having from 6 to 20 carbon atoms or an unsaturated organic group, cyclic or not, selected in the group comprising define, diene and cyano, L* is a chiral ligand selected in the group comprising the chiral diphosphine derivatives, the chiral atropoisomeric diphosphine derivatives, the chiral monodentate phosphoramidine derivatives, the chiral biphospholane derivatives, the chiral ferrotane derivatives and the chiral ferrocenyl phosphine derivatives, Y is an anion such as C104-, BF4-, PF6-, SbF6-, j is an integer equal to 0 or 1, i is an integer equal to 0, 1, 2 or 4, n is an integer equal to 1 or 2; wherein the molar ratio of the en-amide derivative of formula (III) to the catalyst (VII) used during the asymmetric hydrogenation is from 100/1 to 10000/1; Wherein the hydrogen pressure used during the asymmetric hydrogenation is from 0.5 to 20 bars; and Wherein the temperature range used during the asymmetric hydrogenation is from - 20°C to 100°c. 2. The process as claimed in claim 1, wherein the oefine is selected in the group comprising pi-allyl and 1, 3, 5, 7-cyclooctatetraene and the diene is selected in the group comprising 1, 3-butadiene, 2,5-norbornadiene, 1, 5-cyclooctadiene (COD) and cyclopentadiene. 3. The process as claimed in claim 1, wherein the aryl group is a benzene optionally substituted with an alkyl. 4. The process as claimed in claim 1, wherein the chiral diphosphine is selected in the group comprising BICP, DuPHOS, MiniPHOS, BDPMI, TangPHOS, P-PHOS, Tol-P-PHOS, Xyl-P-PHOS and BPE. . 5. The process as claimed in claim 1, wherein the chiral atropoisomeric diphosphine is selected in the group comprising BINAP, TolBINAP, MeOBIPHEP, BINAPO, SYNPHOS and BINAPO optionally ortho-substituted with an alkyl or an aryl. 6. The process as claimed in claim 1, wherein the chiral monodentate phosphoramidine is selected in the group comprising Monophos and Ethylmonophos. 7. The process as claimed in claim 1, wherein the chiral bisphospholane is selected in the group comprising Tangphos, Duphos, Me-Duphos Me-BPE, Et-BPE, Binaphane and Malphos. 8. The process as claimed in claim 1, wherein the chiral ferrocenyl phosphine is JOSIPHOS. 9. The process as claimed in any one of claims 1 to 8, wherein the optically active catalyst is Ru (COD) (MeOBIPHEP) BF4- or Ru (COD) (BINAP) BF4-. 10. The process as claimed in any one of claims 1 to 9, wherein the solvent used during the asymmetric hydrogenation is selected in the group comprising ether, aromatic hydrocarbon halogenated hydrocarbon and alcohol, preferably an alcohol. 11. The process as claimed claim 10, wherein the ether is selected in the group comprising tetrahydrofuran (THF), tetrahydropyran and diethyl ether, the aromatic hydrocarbon is selected in the group comprising benzene and toluene, the halogenated hydrocarbon is dichloromethane, the alcohol is selected in the group comprising methanol, ethanol and isopropanol, and is preferably the methanol. 12. The process as claimed in any one of claims 1 to 11, wherein the molar ratio of the en-amide derivative of formula (III) to the catalyst (VII) used during the asymmetric hydrogenation is from 100/1 to 1000/1 and more preferably from 200/1 to 1000/1. 13. The process as claimed in any one of claims 1 to 12, wherein the hydrogen pressure used during the asymmetric hydrogenation is from 1 to 8 bars. 14 . The process as claimed in any one of claims 1 to 13, wherein the temperature range used during the asymmetric hydrogenation is from 20 to 100°C, preferably from 20°C to 60°C. |
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4627-DELNP-2006-Claims-(04-07-2011).pdf
4627-DELNP-2006-Claims-(28-03-2012).pdf
4627-DELNP-2006-Correspondence Others-(04-07-2011).pdf
4627-DELNP-2006-Correspondence Others-(28-03-2012).pdf
4627-delnp-2006-Correspondence-Others-(16-10-2007).pdf
4627-delnp-2006-correspondence-others.pdf
4627-DELNP-2006-Drawings-(28-03-2012).pdf
4627-DELNP-2006-Form-1-(04-07-2011).pdf
4627-delnp-2006-Form-18-(16-10-2007).pdf
4627-DELNP-2006-Form-2-(04-07-2011).pdf
4627-DELNP-2006-Form-3-(04-07-2011).pdf
4627-DELNP-2006-GPA-(04-07-2011).pdf
4627-DELNP-2006-Petition-137-(04-07-2011).pdf
Patent Number | 252256 | ||||||||||||||||||||||||
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Indian Patent Application Number | 4627/DELNP/2006 | ||||||||||||||||||||||||
PG Journal Number | 19/2012 | ||||||||||||||||||||||||
Publication Date | 11-May-2012 | ||||||||||||||||||||||||
Grant Date | 03-May-2012 | ||||||||||||||||||||||||
Date of Filing | 10-Aug-2006 | ||||||||||||||||||||||||
Name of Patentee | PPG-SIPSY | ||||||||||||||||||||||||
Applicant Address | 73 RUE DU DOCTEUR CHAILOUX-49330 CHAMPIGNE- FRANCE | ||||||||||||||||||||||||
Inventors:
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PCT International Classification Number | C07C 213/02 | ||||||||||||||||||||||||
PCT International Application Number | PCT/IB2005/000534 | ||||||||||||||||||||||||
PCT International Filing date | 2005-02-21 | ||||||||||||||||||||||||
PCT Conventions:
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