A compound of the formula: ##STR1## wherein R is a C.sub.1 -C.sub.4 alkyl group, a C.sub.3 -C.sub.4 alkenyl group or a C.sub.3 -C.sub.4 cycloalkyl group, X is a chlorine atom or a bromine atom and Y is a hydrogen atom or a C.sub.1 -C.sub.4 alkoxy group, which is useful as a herbicide.
该化合物的
化学式为:##STR1## 其中R为C.sub.1-C.sub.4烷基,C.sub.3-C.sub.4烯基或C.sub.3-C.sub.4环烷基,X为
氯原子或
溴原子,Y为氢原子或C.sub.1-C.sub.4烷氧基。该化合物可用作
除草剂。