Enantioselective Hydrogenation of β,β-Disubstituted Unsaturated Carboxylic Acids under Base-Free Conditions
作者:Qiaozhi Yan、Duanyang Kong、Wei Zhao、Guofu Zi、Guohua Hou
DOI:10.1021/acs.joc.6b00018
日期:2016.3.4
An additive-free enantioselective hydrogenation of β,β-disubstituted unsaturated carboxylic acids catalyzed by the Rh–(R,R)-f-spiroPhos complex has been developed. Under mild conditions, a wide scope of β,β-disubstituted unsaturated carboxylic acids were hydrogenated to the corresponding chiral carboxylic acids with excellent enantioselectivities (up to 99.3% ee). This methodology was also successfully
已经开发了由Rh–(R,R)-f-spiroPhos络合物催化的无添加剂对映体选择性氢化β,β-二取代不饱和羧酸。在温和的条件下,将大范围的β,β-二取代不饱和羧酸氢化为相应的手性羧酸,对映体选择性极好(ee高达99.3%)。该方法学也成功地应用于药物分子茚达林的合成。