Heterocyclic Communications p. 485 - 488 (2002)
Update date:2022-09-26
Topics:
Gupta, Kalpana
Gupta, Vandana
Gupta, Rajni
Kumar
7-Methoxy/6-sulfonyl-4H-1,4-benzothiazines have been prepared by the condensation and oxidative cyclization of substituted 2-aminobenzenthiols (I) with β-diketones in the presence of dimethyl sulfoxide. The reaction is considered to proceed through the formation of an intermediate enaminoketone. The IR, 1H NMR and mass spectra are also included.
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