Abstract:In recent years, synthesis and biological evaluation of novel 4H-1, 4-benzothiazines and their sulfone analogues have gained momentum due to their medicinal and industrial importance. The present article describes the synthesis of new 4H-1, 4-benzothiazines via condensation and oxidative cyclization of substituted 2-aminobenzenethiols with compounds containing active methylene groups. It is believed that the reaction proceeds via intermediary of the enaminoketone system. The sulfone derivatives were synthesize… Show more
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