5-Hydroxy-2-pyrazolines and Some of Their 1-Substituted Analogs
Chem Inform(2003)
摘要
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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关键词
3-dicarbonyl compounds,hydrazines,hydrazones,5-hydroxypyrazolines,pyrazoles
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