Enantio- and diastereoselective boron conjugate addition to α-alkyl α,β-unsaturated esters
作者:Meng Li、Guang-Rui Peng、Xuan Yang、Zhen-Ning Ma、Jian-Bo Xie
DOI:10.1039/d2ob01928k
日期:——
We developed a copper-catalyzed enantio- and diastereoselective boron conjugate addition to α-alkyl α,β-unsaturated esters under base-free conditions. The approach showed excellent enantioselectivities (87–99% ee) and moderate to good conversions (51–99%), albeit with moderate diastereoselectivities (1 : 1–17 : 1 dr). The synthetic utility of this protocol was demonstrated.
我们在无碱条件下开发了一种铜催化的对映选择性和非对映选择性硼共轭加成到 α-烷基 α,β-不饱和酯中。该方法显示出出色的对映选择性 (87–99% ee) 和中等至良好的转化率 (51–99%),尽管具有中等的非对映选择性 (1 : 1–17 : 1 dr)。证明了该协议的综合效用。