| abstract |
Process for the preparation of 3-isopropyl-1H-2,1,3-benzothiadizin-4 (3H) -one 2,2-dioxide or its salt in that the anthranilic isopropylamide is simultaneously reacted with oxide with chlorosulfonic acid in the presence of an organic set or an oxide adduct on the organic set and phosphorus oxychloride at 50 degC and reflux temperatures, respectively, is converted to s. |