Triazole‐Gold‐Promoted, Effective Synthesis of Enones from Propargylic Esters and Alcohols: A Catalyst Offering Chemoselectivity, Acidity and Ligand Economy

Abstract

Abstract The air, moisture and thermally stable 1,2,3‐triazole coordinated gold(I) complexes (TA‐Au) were revealed as the effective catalysts in promoting propargylic ester rearrangement and sequential allene hydration, giving the enones with excellent yields (up to 97% yields, 0.2% loading). The catalysts could also catalyze the more challenging Meyer–Schuster rearrangement (0.5% loading, up to 98% yields). The reported reaction confirmed TA‐Au as a chemoselective catalyst in promoting alkyne activation with high efficiency and improved ligand economy.