Asymmetric Cu<sup>I</sup>-Catalyzed Insertion Reaction of 1-Aryl-2,2,2-trifluoro-1-diazoethanes into Si–H Bonds
作者:Virginie Carreras、Claire Besnard、Vincent Gandon、Thierry Ollevier
DOI:10.1021/acs.orglett.9b03480
日期:2019.11.15
An asymmetric copper(I)-catalyzed Si-H insertion reaction of 1-aryl-2,2,2-trifluoro-1-diazoethanes in dimethyl carbonate as a green solvent alternative was developed. A C2-symmetric copper(I) diimine complex enabled the asymmetric insertion reaction to give enantioenriched (1-aryl-2,2,2-trifluoroethyl)silanes with excellent stereoselectivities (up to 98:2 er). Successful conversion of the silanes into
开发了一种不对称的铜(I)催化1-芳基-2,2,2-三氟-1-重氮乙烷在碳酸二甲酯中作为绿色溶剂替代物的Si-H插入反应。C 2对称的铜(I)二亚胺络合物能够进行不对称插入反应,从而生成对映体富集的(1-芳基-2,2,2-三氟乙基)硅烷,具有出色的立体选择性(最高98:2 er)。在保留立体化学的情况下,将硅烷成功转化为相应的醇。力学研究和DFT计算为观察到的立体选择性提供了建议的模型。