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Studies on the chemistry of thieno-anellated O,N- and S,N-containing heterocycles. 2. Synthesis of thieno[2,3-b]diazepine derivatives with potential CNS activity

✍ Scribed by Thomas Erker

Book ID: 112130674
Publisher: Journal of Heterocyclic Chemistry
Year: 1993
Tongue: English
Weight: 194 KB
Volume: 30
Category: Article
ISSN: 0022-152X
DOI: 10.1002/jhet.5570300333

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## Abstract A facile synthesis of the imidazo[1,5‐__d__]thieno[2,3‐__b__][1,4]thiazine ring system is described. Reaction of 6‐benzyl‐2,3‐dihydro‐1__H__‐thieno[2,3‐__b__][1,4]thiazine‐2‐one (**1**) with potassium __tert__‐butoxide and diethylchlorophosphate gave intermediate **2** which resulted in