| abstract |
A kind of pyrazolyl acrylniitrile compounds represented by the structures of formula I or stereoisomers thereof are disclosed in the present invention. n n n n n n n n n n n n Where in: R 1 is selected from the group of substituents consisting of 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 alknyloxy C 1 -C 2 alkyl, C 1 -C 4 alkylthio C 1 -C 2 alkyl, C 1 -C 5 alkyl carbonyl, C 3 -C 8 cycloalkyl carbonyl, C 1 -C 5 alkoxy carbonyl or C 1 -C 5 alkylthio carbonyl; R 2 is Cl or methyl; R 3 is H, methyl, CN, NO 2 or halogen. Or its stereoisomers. n n n n n The Formula I compounds have high insecticidal activities or acaricidal activities, so they can be used as insecticide or acaricide. |