Lewis acid promoted asymmetric 1,4-addition of allyltrimethylsilanes to chiral α,β-unsaturated n-acylamides
作者:Ming-Jung Wu、Chi-Cheng Wu、Pei-Chen Lee
DOI:10.1016/s0040-4039(00)92238-x
日期:1992.4
The 1,4-addition reaction of allyltrimethylsilane to alpha,beta-unsaturated N-acyloxazolidinones or N-enoyl-sultams in the presence of Lewis acid proceeds in good chemical yield with high diastereomeric excess. The absolute configuration of the new asymmetric center is controlled by the nature of the Lewis acid via transition state A or B.