𝔖 Bobbio Scriptorium
✦   LIBER   ✦

A Microwave Induced Cyclization of α-Phenylsulfonyl-enaminoacrylates for the Preparation of 4-Aryl-4H-1,4-benzothiazine 1,1-Dioxide Derivatives.

✍ Scribed by Simon E. Lopez; Jose Salazar; Oscar Rebollo; Jelem Restrepo

Publisher
John Wiley and Sons
Year
2005
Weight
14 KB
Volume
36
Category
Article
ISSN
0931-7597

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

For Abstract see ChemInform Abstract in Full Text.

📜 SIMILAR VOLUMES

A microwave induced cyclisation of α-phe
A microwave induced cyclisation of α-phenylsulfonyl-enaminoacrylates for the preparation of 4-aryl-4H-1,4-benzothiazine 1,1-dioxide derivatives
✍ Simón E. López; José Salazar; Oscar Rebollo; Jelem Restrepo 📂 Article 📅 2005 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 67 KB

## 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.

Studies on the reaction of 3-substituted
Studies on the reaction of 3-substituted-4-hydroxy-2H-1,2-benzothiazine 1,1-dioxides with aryl isocyanates and the synthesis of corresponding derivatives
✍ Zhao Guo-Feng; Yang Hua-Zheng 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 English ⚖ 286 KB 👁 1 views

The reaction of 3-substituted-4-hydroxyroxy-2H-1,2-be~othiazine 1,l-dioxides with aryl isocyanate under different equivalents of strong base NaH was studied. Seventeen of new derivatives were obtained whose structures were characterized by ' H NMR, IR, MS, elementary analysis and FeCls test. ## Key

A new approach for the synthesis of some
A new approach for the synthesis of some 1,4-benzoxathiin 4,4-dioxide derivatives
✍ Ai-Long Fan; Song Cao; Zheng Zhang 📂 Article 📅 1997 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 268 KB

A series of 1,4-benzoxathiin 4,4-dioxide derivatives have been prepared by a new synthetic route. The reactions of 2-chloro-4-nitrobenzenethiol 1 with 1 -aryl-2-chloroethanones 2 in the presence of sodium hydroxide give 1-aryl-2-(2-chloro-4-nitrophenylthio)ethanones 3 which on oxidation with \(30 \%