Regioselective Synthesis of Trifluoromethyl Group Substituted Pyrazole Derivatives from 1-Aryl-3,4,4,4-tetrafluoro-2-buten-1-ones
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概要
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Trifluoromethyl group substituted pyrazole derivatives were prepared from hydrazines and 1-aryl-3,4,4,4-tetrafluoro-2-buten-1-ones obtained by the deoxyfluorination of β-diketones. The reaction proceeded regioselectively and 5-aryl-3-trifluoromethyl-1-phenyl-1H-pyrazole was obtained from phenylhydrazine. On the other hand, when methylhydrazine was used, 3-aryl-5-trifluoromethyl-1-methyl-1H-pyrazole was selectively formed.
- Japan Institute of Heterocyclic Chemistryの論文
- 2010-01-01
Japan Institute of Heterocyclic Chemistry | 論文
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