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SYNTHESIS OF 6-HYDROXY-5,6-DIHYDRO-2-PYRONES AND -PYRIDONES BY REACTION OF 4-ARYL-6-TRIFLUOROMETHYL-2-PYRONES WITH WATER, HYDRAZINE, AND HYDROXYLAMINE

Сергей А. Усачев, Борис И. Усачев, Вячеслав Я. Сосновских
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Abstract


Reactions of 4-aryl-6-trifluoromethyl-2H-pyran-2-ones with sodium hydroxide followed by acidification provided the respective 6-hydroxy-5,6-dihydro derivatives, while the reactions of 4-aryl-6-trifluoromethyl-2H-pyran-2-ones with hydrazine and hydroxylamine were accompanied by rearrangement to N-substituted 6-hydroxy-5,6-dihydro-2-pyridones.

Authors: Sergey A. Usachev*, Boris I. Usachev, Vyacheslav Ya. Sosnovskikh


Keywords


2-pyrones; 5,6-dihydro-2-pyridones; 5,6-dihydro-2-pyrones; ANRORC rearrangement

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