UN PROCEDIMIENTO PARA LA PRODUCCION DE UN DERIVADO DE FENOXIACIDO GRASO DEL TIPO DE ETER HETEROCICLICO.

摘要

A herbicidal composition which comprises an adjuvant and an active ingredient of heterocyclic ether type phenoxy fatty acid derivative having the formula (I) wherein A represents -CH- or -N-; X represents a halogen atom; n is 0, 1 or 2; R1 represents a hydrogen atom; a lower alkyl group; R2 represents -OH; -O-alkyl group; -OM group (M is an inorganic or organic salt moiety); -O-lower alkenyl group; -O-benzyl group; -O-lower alkylalkoxy group; -O-phenyl; -O-cyclohexyl, -O-halogenoalkyl, -O-lower alkynyl and -O-cyanoalkyl; R3 and R4 respectively represent a hydrogen atom or a lower alkyl group.