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

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

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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Veröffentlicht in:Journal of heterocyclic chemistry 2005-07, Vol.42 (5), p.1007-1010
Hauptverfasser: López, Simón E., Salazar, José, Rebollo, Oscar, Restrepo, Jelem
Format: Artikel
Sprache:eng
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Zusammenfassung: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.
ISSN:0022-152X
1943-5193
DOI:10.1002/jhet.5570420541