Enantioselective Copper(II)-Catalyzed Conjugate Addition of Indoles to β<i>-</i>Substituted Unsaturated Acyl Phosphonates
作者:Hong-Li Ma、Lei Xie、ZhenHua Zhang、Jia-Qi Li、Zhao-Hai Qin、Bin Fu
DOI:10.1002/adsc.201500923
日期:2016.3.31
The first copper‐catalyzed enantioselective conjugate addition of indoles to β‐substituted unsaturated acyl phosphonates was successfully realized by using a heteroarylidene‐tethered bis(oxazoline) ligand. The reaction features high efficiency, cheap catalyst and broad generality. In the case of either β‐alkyl‐ or β‐aryl‐substituted unsaturated acyl phosphonates, the 3‐indolyl adducts were achieved
通过使用杂亚芳基连接的双(恶唑啉)配体成功实现了吲哚向β-取代的不饱和酰基膦酸酯的首次铜催化对映选择性共轭加成反应。该反应具有高效,廉价的催化剂和广泛的通用性。对于β-烷基或β-芳基取代的不饱和酰基膦酸酯,可以实现高收率的3-吲哚基加合物,具有良好至优异的对映选择性(ee高达97%)。3-吲哚基加合物可作为吲哚生物碱合成的重要中间体。