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A microwave induced cyclisation of α-phenylsulfonyl-enaminoacrylates for the preparation of 4-aryl-4H-1,4-benzothiazine 1,1-dioxide derivatives

✍ Scribed by Simón E. López; José Salazar; Oscar Rebollo; Jelem Restrepo

Publisher
Journal of Heterocyclic Chemistry
Year
2005
Tongue
English
Weight
67 KB
Volume
42
Category
Article
ISSN
0022-152X

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✦ Synopsis

Abstract

Several 4‐aryl‐4H‐1,4‐benzothiazine 1,1‐dioxide derivatives have been prepared in good yields by microwave promoted cyclisation of α‐phenylsulfonyl‐enaminoacrylate intermediates in basic media. Benzothiazines were obtained without the use of a catalyst in short reaction times.

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