Efficient Synthesis of Pyrazoles by pH Dependent Isomerization of Enaminodiones
Asian Journal of Organic Chemistry(2023)
摘要
A chromone‐based Michael reaction using water as solvent and nucleophile was firstly developed to derivatize chromone via a multicomponent reaction (MCR) cascade sequence in absence of metal catalyst. A series of versatile enaminodiones was synthesized and further successfully transferred into two different pyrazoles with the same starting material under facile and mild condition by a pH control of the preferred isomer.
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关键词
Chromone,Michael addition,Water,Pyrazole,pH Dependent
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