| abstract |
A pyrazolylacrylonitrile compound represented by the structure of Formula I wherein R 1 is H, C 1 -C 4 alkoxy C 1 -C 2 alkyl, C 3 -C 5 alkenyloxy C 1 -C 2 alkyl, C 3 -C 5 alkynyloxy C 1 -C 2 alkyl, C 1 -C 4 alkylthio C 1 -C 2 alkyl, C 1 -C 5 alkylcarbonyl, C 3 -C 8 cycloalkyl carbonyl, C 1 -C 5 alkoxycarbonyl or Selected from C 1 -C 5 alkylthiocarbonyl; R 2 is Cl or methyl; R 3 is H, methyl, CN, NO 2 or halogen) or a stereoisomer thereof. The compounds of formula I have a high insecticidal or acaricidal activity and can be used as insecticides or acaricides. |