SUBSTITUTED PHENOXYPROPIONATES,INTERMEDIATES FOR PRODUCTION THEREOF,PROCESS FOR PRODUCTION OF SAID ESTERS AND INTERMEDIATES,AND HERBICIDE

摘要

Novel substituted phenoxypropionates of the formula (I) in which Ar represents the group or the group in which Y represents a halogen atom or a trifluoromethyl group and b is 1 or 2, R represents a hydrogen atom or a methyl group, X represents a hydrogen atom, a halogen atom, a nitro group, a lower alkyl group or a lower alkoxy group, a and m each independently is 1 or 2, and n is 0, 1 or 2, and their use as herbicides. Novel intermediates of the formulae (III) (VII) in which formulae R, X, m, n and a have the meanings given above, Z1 is a halogen atom and m is a hydrogen atom or an alkali metal atom.