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Synthesis of some novel 3,7-dimethyl-4H-pyrazolo[5,1-c][1,2,4]triazin-4-ones

✍ Scribed by Ahmed A. El-Barbary; Mahmoud A. El-Badawi; Yasser M. Loksha

Publisher
Journal of Heterocyclic Chemistry
Year
2001
Tongue
English
Weight
66 KB
Volume
38
Category
Article
ISSN
0022-152X

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✦ Synopsis

Abstract

Some novel 3,7‐dimethyl‐6__H__‐pyrazolo[5,1‐c][1,2,4]triazin‐4‐ones were prepared (3a‐g). Compounds 3a,b were treated with hydrazines to afford various products 7a,b, 8a,b, 9 and lla,b depending on the type of hydrazine derivative and reaction conditions. The benzoyloxyimino‐pyrazolo[5,1‐c][1,2,4]triazines (13a,b) were synthesized by refluxing of compounds 3a,b with hydroxylamine hydrochloride to afford the corresponding oxime derivatives followed by treatment with benzoyl chloride.

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