New pyrethrinoid (pyrethroid) esters derived from isoxazolic or isothiazolic alcohol, process for their preparation and their application as pesticides

摘要

Compounds of formula (I), wherein the radical (a) is in position 3 or 5; X is a hydrogen atom, a cyano radical or a saturated or unsaturated alkyl radical; Y in position 4 or 5 is a hydrogen atom, an NO2, NH2 or C=N radical, a straight or branched saturated or unsaturated alkyl radical containing up to 8 carbon atoms and optionally substituted by one or more halogen atoms, a radical -(CH2)nOH where the OH radical is optionally etherified or esterified, with n being the number 0, 1, 2, 3 or 4, or a radical (b), NHalc1 or (c), wherein alc1 and alc2, which are the same or different, are an alkyl radical containing up to 8 carbon atoms; Z is an oxygen or sulphur atom; and R is the residue of an acid used in pyrethrinoid synthesis. The compounds of formula (I) have interesting pesticidal properties.