SUBSTITUTED PHENOXY UREA, PROCESSES FOR ITS PREPARATION AND HERBICIDE CONTAINING IT AS ACTIVE INGREDIENT

摘要

A substituted phenoxy urea having the formula: wherein A is a halogen atom or a trifluoromethyl group, each of X, Y and Z is a hydrogen atom, a halogen atom or a trifluoromethyl group, R1 is a C1-C6 alkyl group, a lower alkoxyl group, a lower alkoxyl-substituted lower alkyl group, a cyclo-lower alkyl-substituted lower alkyl group, a lower alkenyl group, a lower alkynyl group, a lower haloalkyl group, a lower haloalkenyl group or a C3-C9 non-aromatic cyclic hydrocarbon group, and R2 is a hydrogen atom, a C1-C6 alkyl group, a lower alkenyl group or a lower alkynyl group, or R1 and R2 form, together with the nitrogen atom to which they are bonded, a 3-8 member ring (which may be a bicyclo ring) which may contain a double bond or an oxygen atom within the ring and may have one or more branches.