A compound of formula I:
wherein R is a lower alkyl group, A is a hydrogen atom, a fluorine atom or a chlorine atom, X is an oxygen atom or a sulfur atom, Y is a hydrogen atom, a fluorine atom, a chlorine atom or a bromine atom and Z is a methyl group or an amino group, which is useful as a herbicide.
式 I 的化合物:
其中 R 是低级烷基,A 是氢原子、
氟原子或
氯原子,X 是氧原子或
硫原子,Y 是氢原子、
氟原子、
氯原子或
溴原子,Z 是甲基或
氨基,可用作
除草剂。