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Reaction of 1-acylthiosemicarbazides with ethenetetracarbonitrile

✍ Scribed by Alaa A. Hassan; Aboul-Fetouh E. Mourad; Ashraf H. Abou-Zied

Publisher
Journal of Heterocyclic Chemistry
Year
2007
Tongue
English
Weight
324 KB
Volume
44
Category
Article
ISSN
0022-152X

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✦ Synopsis

Abstract

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1‐Acylthiosemicarbazides 9a‐d reacted with ethenetetracarbonitrile (TCNE, 2) in ethyl acetate with formation of N′‐(4‐amino‐5,6‐dicyano‐2__H__‐1,3‐thiazin‐2‐ylidene) substituted hydrazide 10a‐d, N′‐(5‐amino‐3,4‐dicyano‐2__H__‐pyrrol‐2‐ylidene)‐2‐substituted hydrazide 11a‐d and 2‐substituted imidazo[2,1‐b][1,3,4]‐oxadiazole‐5,6‐dicarbonitrile 12a‐d. Rationales for the conversions observed are presented.

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