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A new synthetic route to 7H-imidazo[1,2-b][1,2,4]triazoles

✍ Scribed by Kee-Jung Lee; Dong-Hyuk Song; Dong-Jin Kim; Sang-Woo Park

Publisher: Journal of Heterocyclic Chemistry
Year: 1997
Tongue: English
Weight: 369 KB
Volume: 34
Category: Article
ISSN: 0022-152X
DOI: 10.1002/jhet.5570340112

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The reaction of benzil 1‐ureidoethylidene hydrazones 8 with a mixture of triphenylphosphine, carbon tetrachloride, and triethylamine provides a general route to 7__H__‐imidazo[1,2‐b][1,2,4]triazoles 18 via the thermal reaction of the expected keto azine carbodiimide intermediates 13, and the structure of 18 was confirmed by X‐ray crystallographic analysis.

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