Enantioselective Synthesis of Chiral Phosphonates via Rh/f-spiroPhos Catalyzed Asymmetric Hydrogenation of β,β-Disubstituted Unsaturated Phosphonates
作者:Chaoqiong Wang、Fang Xie、Qianling Guo、Chaochao Xie、Guofu Zi、Weiping Ye、Zhangtao Zhou、Guohua Hou、Zhanbin Zhang
DOI:10.1021/acs.joc.1c01397
日期:2021.9.3
The first asymmetric hydrogenation of β,β-diaryl unsaturated phosphonates has been realized for synthesis of β,β-diaryl chiral phosphonates with excellent enantioselectivities (up to 99.9% ee) catalyzed by the Rh-(R,R)-f-spiroPhos complex. Furthermore, this catalyst also exhibits comparably excellent performance for β-aryl-β-alkyl unsaturated phosphonates providing the corresponding chiral phosphonates
首次实现了β,β-二芳基不饱和膦酸酯的不对称氢化,用于在Rh-( R , R )-f-spiroPhos 络合物催化下合成具有优异对映选择性(高达99.9% ee)的β,β-二芳基手性膦酸酯. 此外,该催化剂对 β-芳基-β-烷基不饱和膦酸酯也表现出相当优异的性能,提供相应的手性膦酸酯,其 ee 值高达 99.9%。这种方法为不对称合成手性膦酸盐提供了一种直接的途径。