Triazole-Gold-Promoted, Effective Synthesis of Enones from Propargylic Esters and Alcohols: A Catalyst Offering Chemoselectivity, Acidity and Ligand Economy
作者:Dawei Wang、Yanwei Zhang、Alexandria Harris、Lekh Nath S. Gautam、Yunfeng Chen、Xiaodong Shi
DOI:10.1002/adsc.201100314
日期:2011.10
(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
揭示了空气,湿气和热稳定的1,2,3-三唑配位的金(I)配合物(TA-Au)作为促进炔丙基酯重排和顺序烯化水合的有效催化剂,使烯酮具有优异的收率(最高可达产率为97%,负载为0.2%)。催化剂还可以催化更具挑战性的Meyer-Schuster重排(0.5%的负载量,最高98%的产率)。报道的反应证实TA-Au是一种化学选择性催化剂,可高效促进炔烃活化并改善配体经济性。