Gallium(III) Triflate Catalyzed Diastereoselective Mukaiyama Aldol Reaction by Using Low Catalyst Loadings
作者:Baptiste Plancq、Lyse Carole Justafort、Mathieu Lafantaisie、Thierry Ollevier
DOI:10.1002/ejoc.201301100
日期:2013.10
A mild method for the diastereoselective Mukaiyama aldol reaction is reported. By using a low loading of the gallium(III) triflate catalyst (down to 0.01 mol-%), the transformation proceeds efficiently to afford the corresponding β-hydroxy ketones in yields up to 92 %. To the best of our knowledge, this is the first report of a metal triflate acting as a safe, bench-stable, and slow-releasing source
报道了非对映选择性 Mukaiyama 醛醇反应的温和方法。通过使用低负载量的三氟甲磺酸镓 (III) 催化剂(低至 0.01 mol-%),转化有效地进行,以高达 92% 的产率提供相应的 β-羟基酮。据我们所知,这是首次报道金属三氟甲磺酸盐可作为安全、长期稳定且缓慢释放的三氟甲磺酸来源,用于向山羟醛反应。