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ChemInform Abstract: Synthesis of 4-Methylene-4H-benzo[d][1,3]thiazines via a Tandem Reaction of 1-(2-Alkynylphenyl)ketoximes with Lawesson′s Reagent.

✍ Scribed by Guanyinsheng Qiu; Yi Hu; Qiuping Ding; Yiyuan Peng; Xiangzheng Hu; Jie Wu

Publisher: John Wiley and Sons
Year: 2011
Weight: 28 KB
Volume: 42
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.201152173

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✦ Synopsis

Abstract

The title tandem reaction proceeds with high efficiency via Beckmann rearrangement, thioamide formation, and subsequent intramolecular cyclization.

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1,3-thiazine derivatives 13-15 were obtained exclusively and stereoselectively in fair yields by treating