Herbicidal 3-(hetero)aryl-4-acylisoxazole compositions and compounds

摘要

The invention provides a method of combating undesired plant growth at a locus, comprising applying to the locus a compound of general formula IMAGE [where R1 represents an optionally substituted aryl or heteroaryl group; R2 represents an optionally substituted alkyl, alkoxy or aryl group; and R3 represents an optionally substituted alkyl, aryl, amino or amido group, or a group of general formula -COOR4 (where R4 represents a hydrogen atom or an optionally substituted alkyl group); or R2 and R3 together represent an optionally substituted alkylene chain optionally interrupted in the chain by one or more hetero atoms; provided that R1 does not represent a phenyl group substituted by a nitro group at the 2-position and by an optionally substituted phenoxy group at the 4-position, when R2 represents an optionally substituted alkyl or phenyl group and R3 represents a group of general formula COOR4] together with a corresponding herbicidal composition. Certain compounds are novel and these and a process for their preparation are also disclosed.