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Studies on the reaction of 3-substituted-4-hydroxy-2H-1,2-benzothiazine 1,1-dioxides with aryl isocyanates and the synthesis of corresponding derivatives
First published: September 1996
Abstract
The reaction of 3-substituted-4-hydroxy-2H-l,2-benzothiazine 1,1-dioxides with aryl isocyanate under different equivalents of strong base NaH was studied. Seventeen of new derivatives were obtained whose structures were characterized by 1H NMR, IR, MS, elementary analysis and FeCl3 test.
