The invention relates to substituted pyrrolone derivatives of the formula (I) wherein X, A, R1, R2 and R3 are as defined in the specification. Furthermore, the present invention relates to processes and intermediates for making compounds of formula (I), to herbicidal compositions comprising these compounds and to methods of using these compounds to control or inhibit plant growth.
                            本发明涉及式(I)的取代
吡咯酮衍
生物,其中X、A、R1、R2和R3如规范中所定义。此外,本发明还涉及制备式(I)化合物的过程和中间体,包括这些化合物的
除草剂组合物以及使用这些化合物控制或抑制植物生长的方法。