Novel substituted phenoxypropionates of the formula ##STR1## in which Ar represents the group ##STR2## or the group ##STR3## 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 ##STR4## in which formulae R, X, m, n and a have the meanings given above, Z.sup.1 is a halogen atom and m is a hydrogen atom or an alkali metal atom.
该专利描述了一种化合物的替代物,其
化学式为##STR1## 其中Ar代表##STR2##或##STR3##,其中Y代表卤素原子或三
氟甲基基团,b为1或2,R代表氢原子或甲基基团,X代表氢原子、卤素原子、硝基、低烷基或低烷氧基,a和m各自独立为1或2,n为0,1或2,并且它们可以用作
除草剂。该专利还描述了该化合物的新中间体,其
化学式为##STR4## 其中R、X、m、n和a的含义如上所述,Z1为卤素原子,m为氢原子或碱
金属原子。