INSECTICIDES

摘要

A novel cyclopropanecarboxyllc acid ester of the formula (I), (I) wherein R1 is a hydrogen atom, methyl group or a fluorine, chlorine or bromine atom, R2 is a fluorine chlorine or bromine atom, and each of R3 and R4 is independently a hydrogen atom, a C1-C3 alkyl, C2-C3 alkenyl or C2-C3 alkynyl group, an alkyl- or halogensubstituted aryl, unsubstituted aryl group or an aralkyl group, which possesses various useful insecticidal and acaricidal activities and can be prepared by reacting an alcohol, halide or arylsulfonate compound of the formula (II), (II) wherein R3 and R4 have the same meanings as defined above and A is a hydroxyl group, a halogen atom or an arylsulfoxy group, with a cyclopropanecarboxyllc acid of the formula (III), (III) wherein R1 and R2 have the same meanings as defined above, or its reactive derivative.