PYRETHROIDS AS INSECTICIDES

摘要

The novel phenoxybenzyl esters of spirocarboxylic acids have the formula in which R1 and A have the meanings given in Patent Claim 1. The novel compounds of the formula I are prepared by reacting approximately equimolar amounts of a suitable spirocarboxylic acid halide and of a suitable m-phenoxybenzyl alcohol. The novel compounds of the formula I have an insecticidal and acaricidal activity. They are therefore used for controlling insects and mites. To this end, an insecticidally or acaricidally effective amount of them is brought into contact with the insects or mites, their environment or their diet.