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Oxazepines and Thiazepines XXXVII [1]. A Simple and Convenient Procedure for the Preparation of 3-Acyl-2,3-dihydrobenzothiazoles by Ring Contraction of 2,4-Diaryl-2,3-dihydro-1,5-benzothiazepines under Acylating Conditions

✍ Scribed by Albert Lévai


Book ID
105749284
Publisher
Springer Vienna
Year
1998
Tongue
English
Weight
96 KB
Volume
129
Category
Article
ISSN
0026-9247

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An Efficient Procedure for the Preparati
✍ Tóth, Gábor ;Lévai, Albert ;Balázs, Barbara ;Simon, András 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 351 KB

## Abstract Reaction of 2,4‐diaryl‐2,3‐dihydro‐1,5‐benzothiazepines 1 with a mixture of acetic anhydride and pyridine afforded 3‐acetyl‐2,3‐dihydrobenzothiazoles 2 as sole products in good yields. Stereochemistry and the hindered rotation of the amide group were studied by means of NMR spectroscopy