4-(BENZISOTHIAZOL-3-YL) PHENOXYACETIC ACID 1',1'- DIOXIDES, A PROCESS FOR PREPARING THE SAME, INTERMEDIATES THEREOF AND THEIR USE AS MEDICAMENTS

摘要

Novel compounds of the formula II < IMG > II wherein X is hydrogen, halogen or lower alkyl; R1 is hydrogen or loweralkyl and R2 and R3 are each independently C1, Br or CH3, and process for their preparation, as described. Compounds of the formula II are useful intermediates in the production of 4-(benzisothiazol-3-yl) phenoxyacetic acid 1', 1'dioxides, which in turn are useful diuretics.