Ni-Catalyzed Asymmetric Hydrogenation of α-Substituted α,β-Unsaturated Phosphine Oxides/Phosphonates/Phosphoric Acids
作者:Xuanliang Yang、Gang Liu、Xun Xiang、Dezheng Xie、Jinyu Han、Zhengyu Han、Xiu-Qin Dong
DOI:10.1021/acs.orglett.2c04105
日期:2023.2.10
Efficient Ni/(S,S)-Ph-BPE-catalyzed asymmetric hydrogenation of α-substituted α,β-unsaturated phosphine oxides/phosphonates/phosphoric acids has been successfully developed, and a wide range of chiral α-substituted phosphines hydrogenation products were obtained in generally high yields with excellent enantioselective control (92%–99% yields, 84%−>99% ee). This method features a cheap transition metal
成功开发了Ni/( S , S )-Ph-BPE催化的α-取代α,β-不饱和膦氧化物/膦酸酯/磷酸的高效不对称加氢反应,并获得了多种手性α-取代膦加氢产物获得普遍高产率和出色的对映选择性控制(92%–99% 产率,84%−>99% ee)。该方法具有廉价的过渡金属镍催化体系、高官能团耐受性、广泛的底物范围通用性和优异的对映选择性。根据氘标记实验的结果,为这种不对称氢化提出了一个似是而非的催化循环。