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Synthesis of 4-(1-phenyl-1H-pyrazol-3-yl)-[1,2,4]triazolo[4,3-a]quinoxalines and their 4-halogenopyrazolyl analogs

✍ Scribed by Kamal F. M. Atta; El Sayed H. El Ashry

Publisher
Journal of Heterocyclic Chemistry
Year
2011
Tongue
English
Weight
170 KB
Volume
48
Category
Article
ISSN
0022-152X

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✦ Synopsis

Abstract

Synthesis of {3‐[1‐(ethoxycarbonyl)‐[1,2,4]triazolo[4,3‐a]quinoxalin‐4‐yl]‐1‐phenyl‐1__H__‐pyrazol‐5‐yl}methyl ethyl oxalate (2), ethyl 4‐[5‐(acetoxymethyl)‐1‐phenyl‐1__H__‐pyrazol‐3‐yl]‐[1,2,4]triazolo[4,3‐a]quioxaline‐1‐carboxylate (4), [4‐halo‐1‐phenyl‐3‐(1‐phenyl‐[1,2,4]triazolo[4,3‐a]quioxalin‐4‐yl)‐1__H__‐pyrazol‐5‐yl]methyl acetate (11), {4‐halo‐3‐[1‐methyl‐[1,2,4]triazolo[4,3‐a]quinoxalin‐4‐yl]‐1‐phenyl‐1__H__‐pyraz‐ol‐5‐yl}methyl acetate (13), and [3‐([1,2,4]triazolo‐[4,3‐a]quinoxalin‐4‐yl)‐4‐halo‐1‐phenyl‐1__H__‐pyrazol‐5‐yl] methyl formate (15) was accomplished. The structural investigation of the new compounds is based on chemical and spectroscopic evidences. J. Heterocyclic Chem., (2011)

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