Organic letters

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

P Kumar, MS Bodas

Index: Kumar, Pradeep; Bodas, Mandar S. Organic Letters, 2000 , vol. 2, # 24 p. 3821 - 3823

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Citation Number: 72

Abstract

The acylphosphoranes formed in a sequential manner from the reaction of the silyl ester of O- acyl (aroyl) salicylic acids and (trimethylsilyl) methylenetriphenylphosphorane undergo intramolecular Wittig cyclization on the ester carbonyl to afford the 4 H-chromen-4-ones in good to excellent yields.

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