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Communication | Regular issue | Vol 19, No. 3, 1982, pp.489-492
Published online, 1st January, 1970
DOI: 10.3987/R-1982-03-0489
Cycloaddition Reactions of 1,3-Benzothiazines II. Reactions of 6,7-Dimethoxy-2H-1,3-Benzothiazine with Dimethyl Acetylenedicarboxylate and Other Dipolarophiles

Lajos Fodor, János Szabó, Gábor Bernáth, and Pál Sohár

*Institute of Pharmaceutical Chemistry, University Medical School, Szeged, Hungary

Abstract

New heterocyclic ring systems containing sulfur and nitrogen (3-6) have been synthesized by the reactions of 6,7-dimethoxy-2H-1,3-benzothiazine with dimethyl acetylenedicarboxylate and other dipolarophiles.