ChemInform Abstract: Synthesis of Naphthofuran‐2(3H)‐one Derivatives by Palladium‐Catalyzed Three‐Component Coupling Using Naphthols, Aldehydes, and Carbon Monoxide.

Abstract

Synthesis of Naphthofuran-2(3H)-one Derivatives by Palladium-Catalyzed Three-Component Coupling Using Naphthols, Aldehydes, and Carbon Monoxide.-Naphthols undergo a three-component reaction with aldehydes and carbon monoxide in the presence of catalytic Pd and TFA to form naphthofuranones. The initial formation of an o-hydroxybenzyl moiety from the naphthols and the aldehyde is confirmed by the conversion of the o-hydroxybenzyl alcohol (IX) to the benzofuranone (X) under similar reaction conditions. -(SATOH, T.; TSUDA, T.; KUSHINO, Y.; MIURA, M.; NOMURA, M.; J.