| 摘要 |
NEW MATERIAL:A tri- or tetra-substituted phenoxycarboxylic acid anilide compound shown by the formulaI(R is lower alkylene, alkenylene; R<1> is CH3, halogen; R<2> is H, OH, lower alkyl, lower alkoxy; x is halogen; Y is lower alkyl, halogenated lower alkyl; lower alkoxy, halogen, nitro, cyano, OH, amino, etc.; l and m are 0 or 1, with the proviso that lmnot equal to 0; n is 0-4). EXAMPLE:2-( 2,4-dichloro-3-methylphenoxy )propionanilide. USE:A herbicide. Having improved herbicidal action, improving properties such as selectivity for weeds/gramineous crops, extended prolonged effect, spread application period, etc. PROCESS:a phenoxycarboxylic acid halide derivative shown by the formula II is reacted with an aniline derivative shown by the formula III preferably in the presence of a deoxidizer to give a compound shown by the formulaI. |
