Kinetic Resolution of Neopentylic Secondary Alcohols by Cu–H-Catalyzed Enantioselective Silylation with Hydrosilanes
作者:Zaneta Papadopulu、Martin Oestreich
DOI:10.1021/acs.orglett.0c03943
日期:2021.1.15
A nonenzymatic kinetic resolution of sterically congested alcohols having a quaternary carbon atom in the β-position is reported. The catalyst system CuCl/NaOtBu/(R,R)-Ph-BPE together with a 3,5-xylyl-substituted tertiary hydrosilane enable enantioselective silylation of the hydroxy group. Several alcohols are obtained with good to excellent selectivity factors, and there are no other known straightforward
报道了在β位具有季碳原子的空间拥挤的醇的非酶动力学拆分。催化剂体系CuCl / NaO t Bu /(R,R)-Ph-BPE与3,5-二甲苯基取代的叔氢硅烷一起使羟基的对映选择性硅烷化成为可能。获得了具有良好至优异的选择性因子的几种醇,并且没有其他已知的直接方法可访问这些基序。