| Abstract |
The invention relates to a-oxygenated or a-thiolated carboxylic acid phenethylamide derivatives of the general formula I including the optical isomers thereof and mixtures of such isomers, wherein A stands for optionally substituted aryl or optionally substituted heteroaryl; X is oxygen or sulfur; Y is oxygen or sulfur; R<sub>1</sub> is hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, haloalkyl, haloalkenyl, haloalkynyl or halocycloalkyl; R<sub>2</sub> is hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkyl- alkyl, alkoxy"alkyl, alkoxy-alkenyl, alkoxy-alkynyl, whereof all alkyl- alkenyl-, alkynyl-, or cycloalkyl-groups may be optionally substituted by halogen; or optionally substituted aryl- alkyl, optionally substituted aryl-alkenyl, optionally substituted aryl-alkynyl or optionally substituted aryloxy-alkyl; R<sub>3</sub> is hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkyl-alkyl, alkbxy-alkyl, alkoxy-alkenyl, alkoxy-alkynyl, whereof all alkyl- alkenyl-, alkynyl-, or cycloalkyl- groups may be optionally substituted by halogen; or is optionally substituted aryl-alkyl, optionally substituted aryl-alkenyl, optionally substituted aryl-alkynyl, optionally substituted aryloxy-alkyl, optionally substituted heteroaryl-alkyl, optionally substituted heteroaryl-alkenyl or optionally substituted heteroaryl-alkynyl; R<sub>4</sub> is alkyl, alkenyl, alkynyl, alkoxy-alkyl, alkoxy, alkenyloxy, alkynyloxy, alkylthio, alkanoyl, alkylamino, dialkylamino, alkoxycarbonyl, whereof all alkyl- alkenyl or alkynyl-groups may be optionally substituted by halogen; or is halogen, cyano, nitro, amino, formyl or carboxyl; R<sub>5</sub> is hydrogen, alkyl, alkenyl or alkynyl; n is an integer 0,1,2,3, or 4; 81 represents a bridge member -CR<sub>10</sub>R<sub>11</sub>, wherein R<sub>10</sub> and R<sub>11</sub> independently of each other are hydrogen or alkyl; and B<sub>2</sub> is an alkylene bridge. These compounds possess useful plant protecting properties and may advantageously be employed in agricultural practice for controlling or preventing the infestation of plants by phytopathogenic microorganisms, especially fungi. |