Chemistry of Heterocyclic Compounds p. 668 - 676 (2002)
Update date:2022-08-04
Topics:
Zelenin
Tugusheva
Yakimovich
Alekseev
Zerova
The use of 1,3-dicarbonyl compounds containing strong electron-withdrawing substituents (perfluoroalkyl, 4-nitrophenyl) at one of the carbonyl groups in reaction with hydrazine or its monosubstituted derivatives (4-nitro- and 2,4-dinitrophenylhydrazines) leads to the formation of stable intermediates for the synthesis of pyrazoles (5-hydroxy-2-pyrazolines) or their linear tautomers (hydrazones).
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