PROCEDE DE PREPARATION DE DERIVES DE TETRAHYDRO-BENZO-FURANYL- BENZOTIENYL ET -NAPHTYL ET DE COMPOSITIONS RODENTICIDES QUI LES CONTIENNENT

摘要

Heterocyclic compounds of the formula I wherein X is -CH=CH-, -O- or -S-; R1 is a group Ar-R2 or -CH=CH-C(CH3)=CH-R21; Ar is phenyl, pyridyl, furyl or thienyl; R2 is a group -CO2R3, -C(O)R4, -CH2OR3, lower-alkylsulphonyl or formyl; R21 is a group-CO2R3, -C(O)R4, -CH2OR3 or formyl; R3 is hydrogen or lower-alkyl and R4 is hydrogen, hydroxy, amino, lower alkylamino, di-(lower alkyl(amino or lower-alkyl; at least one ring of the molecule being heterocyclic, salts thereof, processes for their preparation, rodenticidal compositions containing these compounds as the active ingredient and methods of use of the rodenticidal compositions are disclosed.