title: A novel synthesis of 4H-chromen-4-ones via intramolecular wittig reaction
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 4H-chromen-4-ones in good to excellent yields.
authors: Division of Organic Chemistry: Technology, National Chemical Laboratory, Pune 411008, India.
authors: P
authors: Kumar
authors: MS
authors: Bodas