Polyfunctional pyrazoles 5. preparative synthesis of 1-aryl-4-formylpyrazole- 3-carboxylic acids

Treatment of methyl pyruvate N-arylhydrazones with the Vilsmeier-Haack reagent gave methyl 1-aryl-4-formylpyrazole-3-carboxylates, basic hydrolysis of which yielded the corresponding acids.

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Bibliographic Details
Published in:Chemistry of heterocyclic compounds (New York, N.Y. 1965) N.Y. 1965), 2009-12, Vol.45 (12), p.1464-1468
Main Authors: Bratenko, M. K, Barus, M. M, Vovk, M. V
Format: Article
Language:English
Subjects:
1-aryl-4-formylpyrazole-3-carboxylic acids
Chemistry
Chemistry and Materials Science
methyl pyruvate N-arylhydrazones
Organic Chemistry
Pharmacy
Vilsmeier-Haack reaction
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Summary:Treatment of methyl pyruvate N-arylhydrazones with the Vilsmeier-Haack reagent gave methyl 1-aryl-4-formylpyrazole-3-carboxylates, basic hydrolysis of which yielded the corresponding acids.
ISSN:0009-3122
1573-8353
DOI:10.1007/s10593-010-0451-z