Combating insects and acarids with 3-(2-chloro-3,3,4,4,4-pentafluoro-1-butenyl)-2,2-dimethyl-cyclopropanecarboxylic acid esters

摘要

A 3-(2,chloro-3,3,4,4,4-pentafluoro-1-butenyl)-2,2-dimethyl-cycloproanec arboxylic acid ester of the formula <IMAGE> (I) in which R1 represents hydrogen, cyano or an alkyl, alkenyl or alkynyl radical with in each case up to 4 carbon atoms, and R2 represents a phenyl radical which is substituted by fluorine and/or by optionally fluorine-substituted C1-C2-alkylenedioxy and/or by optionally fluorine-substituted phenoxy, with the proviso that the radical R2 contains a total of at least one fluorine-substituent which possesses insecticidal and acaricidal activity.