Regio- and Enantioselective Copper-Catalyzed 1,4-Conjugate Addition of Trimethylaluminium to Linear α,β,γ,δ-Unsaturated Alkyl Ketones
作者:Xiaoting Wu、Fang Xie、Zheng Ling、Liang Tang、Wanbin Zhang
DOI:10.1002/adsc.201600375
日期:2016.7.28
A regio‐ and enantioselective copper‐catalyzed 1,4‐conjugate addition of trimethylaluminium to linear δ‐aryl‐substituted α,β,γ,δ‐unsaturated alkyl ketones was developed. A series of γ,δ‐unsaturated alkyl ketones were obtained in good yields with high regio‐ and enantioselectivity (up to 88% ee and 96:4 dr). Expansion of the reaction scope to substrates containing aromatic heterocycles also afforded
开发了区域和对映体选择性铜催化的三甲基铝向线性δ-芳基取代的α,β,γ,δ-不饱和烷基酮的1,4-共轭加成反应。以高收率和高区域选择性和对映选择性(高达ee达88%和dr:96:4 )获得了一系列γ,δ-不饱和烷基酮。将反应范围扩大到含有芳族杂环的底物,还具有良好的收率和对映选择性(最高91%ee),具有很高的区域选择性,仅提供单一的1,4-产物。