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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 28, 1998 - Issue 22
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Original Articles

A Convenient Synthesis of 2H-3,4-Dihydro-1,4-Benzothiazines

Armelle Sauleau UPRES Pharmacochimie de Molécules de Synthèse et de Substances Naturelles, Université de Rennes I, Av. Pr Léon Bernard, 35043, Rennes-Cedex, France
,
Michele David UPRES Pharmacochimie de Molécules de Synthèse et de Substances Naturelles, Université de Rennes I, Av. Pr Léon Bernard, 35043, Rennes-Cedex, France
&
Jean Sauleau UPRES Pharmacochimie de Molécules de Synthèse et de Substances Naturelles, Université de Rennes I, Av. Pr Léon Bernard, 35043, Rennes-Cedex, France
Pages 4105-4121 | Received 01 Jun 1998, Published online: 11 Mar 2009
 
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Abstract

Aminothioalkenols react with paratoluenesulfonic acid in benzene or with phosphoric acid in toluene, and provide mainly heterocyclization in 2H-3,4-dihydro-1,4- benzothiazines; formation of some indenes and diene (in one case) was observed too.

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