4-heteroaroylisoxazole derivatives of formula I:
wherein
Ar represents an optionally substituted group Het, wherein Het represents a first heterocyclic ring containing from one to four heteroatoms in the ring selected from oxygen, nitrogen and sulphur, which is optionally fused with a benzene, or carbocyclic or second heterocyclic ring (which is optionally saturated or partially saturated) to form a bicyclic system, wherein the first heterocyclic ring of the group Het is attached to the carbonyl group in the 4-position of the isoxazole ring provided that Het is not pyridinyl or thienyl;
R represents hydrogen or -CO2R3;
R' represents alkyl or haloalkyl or a cycloalkyl group optionally substituted by one or more groups R4;
R3 and R4 independently represent alkyl or haloalkyl;
agriculturally acceptable salts thereof and their use in weed control is described.
式 I 的 4-杂戊酰
异噁唑衍
生物:
其中
Ar 代表任选取代的基团 Het,其中 Het 代表第一杂环,环中含有一至四个杂原子,选自氧、氮和
硫,可任选与苯、或碳环或第二杂环(可任选饱和或部分饱和)融合形成双环体系,其中基团 Het 的第一杂环连接到
异噁唑环 4 位的羰基上,前提是 Het 不是
吡啶基或
噻吩基;
R 代表氢或 -CO2R3
R' 代表烷基或卤代烷基或任选被一个或多个基团 R4 取代的环烷基;
R3 和 R4 独立地代表烷基或卤代烷基;
描述了其农业上可接受的盐类及其在除草中的用途。