A Gold‐Catalyzed Cascade Reaction Involving an Unusual Intramolecular Redox Process

Abstract

Gold catalysis: Secondary 5-hexyn-1-ol derivatives react with indoles and other heteroaromatic compounds under gold-catalyzed conditions to give the corresponding ketone derivative (see scheme) through a cascade reaction involving an initial intramolecular hydroalkoxylation reaction of the triple bond followed by an intermolecular hydroarylation reaction and an unusual intramolecular Oppenauer-type oxidation process.