17547-87-4Relevant academic research and scientific papers
A synthesis of a novel heterocyclic system: 2H-furo[3,2-b][1,4] benzothiazin-2-one
Dolzhenko, Anton V.,Chui, Wai-Keung
, p. 2623 - 2626 (2007/10/03)
A synthesis of 3-methyl-2H-furo[3,2-b][1,4]benzothiazin-2-ones (10a,b) is described. o-Aminothiophenols (1a,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.
Reactions of Cyclic Anhydrides: Part VIII - Formation of 2-Oxobenzothazines from o-Aminothiophenol and Maleic Anhydride Derivatives
Wagh, S. B.,Shaikh, A. S.,Balasubramaniyan, V.
, p. 868 - 871 (2007/10/02)
Reaction of o-aminothiophenol (o-ATP) with maleic anhydride, maleic acid or fumaric acid furnishes 2-(oxobenzothiazinyl)acetic acid (Ia); with methyl hydrogenmaleate or methyl hydrogenfumarate, a mixture of Ia and its methyl ester Ib (80 : 20 and 65 : 35
