AGENT WITH INSECTICIDAL AND ACARICIDAL EFFECT COMPRISING 3-ALKEN-1-YL-2,2-DIMETHYL-CYCLOPROPANE-CARBOXYLIC ACID-(4-FLUOR-3-PHENOXY-BENZYL)-ESTER AND PROCESS FOR PREPARING THE ACTIVE SUBSTANCE

摘要

4-Fluoro-3-phenoxy-benzyl 3-alken-1-yl-2,2-dimethylcyclopropanecarboxylates have the general formula IMAGE (I) wherein R represents alkyl or alkenyl, R1 represents hydrogen or alkyl, with the proviso that R and R1 are different, and R2 represents hydrogen, cyano or alkyl, alkenyl or alkynyl having in each case up to 4 carbon atoms, are obtained if 3-alken-1-yl-2,2-dimethyl-cyclopropanecarboxylic acids of the general formula IMAGE (II) wherein R and R1 have the meaning given above, or reactive derivatives of these acids, are reacted with 4-fluoro-3-phenoxy-benzyl alcohols of the general formula IMAGE (III) wherein R2 has the meaning given above, or with reactive derivatives of these alcohols, if appropriate in the presence of an acid acceptor and/or catalyst, and if appropriate using a diluent. The compounds of the formula (I) have a high pesticidal activity, especially against insects or acarids.