TiCl4-Promoted Mukaiyama Aldol Reaction of Fluorinated Silyl Enolates for the Construction of a Quaternary Carbon Center
作者:Yong Guo、Wengui Wang、Qing-Yun Chen
DOI:10.1055/s-0031-1289535
日期:2011.11
A method for the preparation of α-fluoro-β-hydroxyphenones from Mukaiyama aldol reactions of various aldehydes and fluorinated silyl enolates was reported. The reaction was promoted by TiCl4 and afforded the desired products in good to excellent yields. The relative stereochemistry of the products was determined by X-ray analysis of single crystals of syn-2-fluoro-3-hydroxy-2-methyl-1,3-diphenylpropan-1-one and anti-2-fluoro-3-hydroxy-2,4,4-trimethyl-1-phenylpentan-1-one.
一种从不同醛和氟化硅烯醇盐的Mukaiyama醇缩反应中制备α-氟-β-羟基苯酮的方法被报道。该反应在TiCl4的促进下进行,获得了良到优异的产率。产物的相对立体化学通过对syn-2-氟-3-羟基-2-甲基-1,3-二苯丙酮和anti-2-氟-3-羟基-2,4,4-三甲基-1-苯戊酮的单晶X射线分析确定。