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A Novel Synthesis of 4H-Chromen-4-ones via Intramolecular Wittig Reaction

Pradeep Kumar and Mandar S. Bodas

*Division of Organic Chemistry: Technology, National Chemical Laboratory, Pune 411008, India, Email: pk.tripathincl.res.in

P. Kumar, M. S. Bodas, Org. Lett., 2000, 2, 3821-3823.

DOI: 10.1021/ol006518p (free Supporting Information)


Abstract

The reaction of the silyl ester of O-acyl(aroyl)salicylic acids and (trimethylsilyl)methylenetriphenylphosphorane provides acylphosphoranes, which undergo intramolecular Wittig cyclization on the ester carbonyl to afford 4H-chromen-4-ones in very good yields.

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Key Words

Chromones, Wittig reaction


ID: J54-Y2000