A compound of the formula: ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3, which may be same or different, are each hydrogen or C.sub.1 -C.sub.4 alkyl, X is chlorine or bromine, Y is hydrogen, chlorine, bromine, fluorine or iodine and Z is N,N-dimethylamino, N-methoxy-N-methylamino, C.sub.1 -C.sub.4 alkyl or C.sub.3 -C.sub.6 cycloalkyl, which is useful as a herbicide.
一种化合物的公式:##STR1##其中R.sub.1,R.sub.2和R.sub.3,可以相同也可以不同,均为氢或C.sub.1-C.sub.4烷基,X为
氯或
溴,Y为氢、
氯、
溴、
氟或
碘,Z为N,N-二甲基
氨基,N-甲氧基-N-甲基
氨基,C.sub.1-C.sub.4烷基或C.sub.3-C.sub.6环烷基,用作
除草剂。