Herbicidally active pyrazolidine-dione or pyrrolidine-dione compounds or derivatives thereof The present invention relates to a compoundof formula (I): wherein CKE is of sub-formula (A) and/or (B): wherein: R1 is fluorine or chlorine; R 2 is hydrogen, methyl, ethyl, n-propyl, cyclopropyl, ethynyl, cyano, fluorine, chlorine, bromine, C 1-C 3 alkoxy, C1 -C 2 fluoroalkoxy, C1 -C 2 alkoxy-C1 -C 3 alkoxy-, or C1 fluoroalkoxy-C1 -C 3 alkoxy-; and X is NR 4 or CR5 R 6; wherein R 3, R 4, R5 and R 6 are as defined herein; wherein the compound of formula (I) is optionally present as an agrochemically acceptable salt thereof. These compounds are suitable for use as herbicides. The invention therefore also relates to a method of controlling weeds, especially grassy monocotyledonous weeds, in crops of useful plants, comprising applying a compound of formula (I), or a herbicidal composition comprising such a compound, to the plants or to the locus thereof.
本发明涉及一种具有除草活性的
吡唑烷二酮或
吡咯烷二酮化合物或其衍
生物。该化合物的结构如下(I)式:其中CKE为亚式结构(A)和/或(B):其中:R1为
氟或
氯;R2为氢、甲基、乙基、正丙基、环丙基、
乙炔基、
氰基、
氟、
氯、
溴、C1-C3烷氧基、C1-C2氟烷氧基、C1-C2烷氧基-C1-C3烷氧基,或C1氟烷氧基-C1-C3烷氧基;X为NR4或CR5R6;其中R3、R4、R5和R6如上所定义;化合物(I)的盐也可以作为农药中的可接受盐存在。这些化合物适用于用作
除草剂。因此,本发明还涉及一种控制杂草的方法,特别是在有用植物作物中控制草本单子叶杂草,包括将化合物(I)或含有这样一种化合物的
除草剂组合物施用于植物或其生长地点。