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Three-component reaction for an efficient synthesis of 5-hydroxy-1-phenyl-1H-pyrazoles containing a stable phosphorus ylide moiety
journal contribution
posted on 2018-02-08, 21:02 authored by Ehsan Ghonchepour, Mohammad Reza Islami, Hamid Mostafavi, Ahmad Momeni TikdariA concise synthesis of new polysubstituted pyrazoles containing a phosphorane is achieved from readily available organic compounds. This C–H bond functionalization is an efficient means of selectively substituting 4-position of pyrazole to produce a five-membered aromatic ring with a chain containing ylide moiety. This protocol requires no additional catalyst and can be used for other pyrazoles including different substituents.