89720-99-0Relevant academic research and scientific papers
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
