PROCESS FOR PREPARING 2-(3-ARYLISOXAZOL-5-YL)BENZOIC ACID DERIVATIVES

摘要

Title compds.(I; X, Y=H, halogen, trifluoromethyl)for use as herbicides, were prepd. by heating II. Thus, 2g 3'-(m-trifluoromethylphenyl)spiro-≮isobenzofuran-1(3H), 5'(4'H)- isoxazol≉-3-one was heated in oil bath at 200-220≦̸C, and recrystallized with acetonitrile to give 1.25g 2-≮3-(m-trifluoromethylphenyl)-5-isoxazolyl≉benzoic acid.