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Synthesis and characterization of some pyrazole derivatives of 1,5-diphenyl-1H-pyrazole-3,4-dicarboxylic acid

✍ Scribed by Rahmi Kasımoğulları; B. Seçkin Arslan

Publisher
Journal of Heterocyclic Chemistry
Year
2010
Tongue
English
Weight
176 KB
Volume
47
Category
Article
ISSN
0022-152X

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✦ Synopsis

Abstract

magnified image Compound of 4‐(ethoxycarbonyl)‐1,5‐diphenyl‐1__H__‐pyrazole‐3‐carboxylic acid 2 was obtained from the reaction of ethyl 4,5‐dioxo‐2‐phenyl‐4,5‐dihydrofuran‐3‐carboxylate and 1‐benzylidene‐2‐phenylhydrazine. A number of substitute pyrazole dicarboxylic acid derivatives (4, 5a, 5b, 5c, 6, 7, 8, 9a, 9b, 9c, 9d, 9e, 9f, 9g, 9h, 9i, 9j, 9k, 9l, 9m, 10, 11, 12, 13, 14) were synthesized from 1,5‐diphenyl‐1__H__‐pyrazole‐3,4‐dicarboxylic acid 3 which was prepared from basic hydrolysis of 2. Structures of synthesized compounds were characterized by ^1^H NMR, ^13^C NMR, Mass, FTIR, and elemental analysis. J. Heterocyclic Chem., (2010).

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