Pesticides containing a haloallylbenzyl group

摘要

A compound of formula I in which formula:- D represents hydrogen or a cyano group; X represents halogen; A represents an alkyl group (typically a C1-C6 alkyl group); n is 0 to 4; RCOO. represents a residue of an acid RCO2H, which acid, or an ester-forming derivative of which acid, on reaction with ???-cyano-3- phenoxybenzyl alcohol or an ester- forming derivative thereof, gives rise to an ???-cyano-3-phenoxybenzyl ester having pesticidal properties, is claimed, as are intermediates and starting materials of the formulae Y is OH or halogen.