Me
<sub>3</sub>
Si−SiMe
<sub>2</sub>
[
<i>o</i>
CON(
<i>i</i>
Pr)
<sub>2</sub>
−C
<sub>6</sub>
H
<sub>4</sub>
]: An Unsymmetrical Disilane Reagent for Regio‐ and Stereoselective Bis‐Silylation of Alkynes
作者:Peihong Xiao、Yanjun Cao、Yingying Gui、Lu Gao、Zhenlei Song
DOI:10.1002/anie.201800513
日期:2018.4.16
The air‐stable unsymmetrical disilane Me3Si−SiMe2[oCON(iPr)2C6H4] has been developed for bis‐silylation of alkynes. This reagent tolerates a range of functional groups, providing Z‐vinyl disilanes in high yields. It is proposed that the phenyl‐ring‐tethered amide group directs oxidative addition of Pd0 into the Si−Si bond, which might facilitate formation of a six‐membered Pd cycle, generating products
空气稳定的不对称乙硅烷Me 3 Si-SiMe 2 [ o CON(i Pr)2 C 6 H 4 ]已开发用于炔烃的双硅烷化反应。该试剂可耐受多种官能团,可提供高收率的Z乙烯基乙硅烷。有人建议苯环束缚的酰胺基团将Pd 0氧化加成到Si-Si键中,这可能有助于形成六元Pd循环,从而产生具有良好或极好的区域选择性的产物。