Wagh, S. B.; Shaikh, A. S.; Balasubramaniyan, V., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1983, vol. 22, # 9, p. 868 - 871
作者:Wagh, S. B.、Shaikh, A. S.、Balasubramaniyan, V.
DOI:——
日期:——
A Synthesis of a Novel Heterocyclic System: 2H-Furo[3,2-b][1,4]benzo- thiazin-2-one
作者:Wai-Keung Chui、Anton V. Dolzhenko
DOI:10.3987/com-04-10208
日期:——
A synthesis of 3-methyl-2H-furo[3,2-b][1,4]benzothiazin-2-ones (10a,b) is described. o-Aminothiophenols (la,b) undergo condensation with citraconic anhydride followed by cyclization and oxidation of the resulting 2-(3,4-dihydro-2H-1,4-benzothiazin-2-yl)propanoic acids (5) with thionyl chloride gives moderate yield of 10a,b.