A compounds of the Formula I
wherein R¹ and R² each independently is a hydrogen atom, cyclopropyl, or alkyl or alkoxy containing 1 to 5 carbon atoms; R³ is hydrogen or alkyl or alkoxy containing 1 to 3 carbon atoms; X is 0 or S; Y is hydrogen, alkyl containing 1 to 4 carbon atoms, fluorine, chlorine or bromine; Z is hydrogen or fluorine; and n is 1 or 2, are useful as herbicides.
式 I 的化合物,其中 R¹ 和 R² 各自独立地为氢原子、环丙基或含有 1 至 5 个碳原子的烷基或烷氧基;R³ 为氢或含有 1 至 3 个碳原子的烷基或烷氧基;X 为 0 或 S;Y 为氢、含有 1 至 4 个碳原子的烷基、
氟、
氯或
溴;Z 为氢或
氟;n 为 1 或 2,可用作
除草剂。