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Preparation of 2-Aroyl-3-methyl-1H-1,4-benzothiazines. ESR Study of 2-benzoyl-1,3-dimethyl-1H-1,4-benzothiazine

โœ Scribed by Prof. Dr. George M. Isakander; Ibrahim El Shiekh El Khawad; Hassan B. Zahran; Prof. Dr. Elmer O. Schlemper

Publisher
John Wiley and Sons
Year
1989
Tongue
English
Weight
335 KB
Volume
331
Category
Article
ISSN
1615-4150

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## Abstract Neue 4โ€Hydroxyโ€2__H__โ€1,2โ€benzothiazinโ€3โ€carboxamidโ€1,1โ€dioxide **1** stellte man durch Aminolyse des entsprechenden Carbonsรคureesters **2** her. Die analogen Naphtho[2,1โ€e]โ€1,2โ€thiazinโ€1,1โ€dioxide **3** wurden in einer 5โ€Stufenโ€synthese aufgebaut.