Enantioselective Deuteration of β-Substituted α,β-Unsaturated Esters by Rhodium-1,2-Bis(2,5-diphenylphospholano)ethane
作者:Sébastien Lethu、Hikaru Ano、Michio Murata、Shigeru Matsuoka
DOI:10.1002/ejoc.201701400
日期:2018.1.17
An efficient asymmetric deuteration of β‐substituted α,β‐unsaturated esters was developed. To protect the carboxylate moiety and provide a direct read‐out of enantiomeric excess, substrates were derived from chiral methyl mandelate esters and subjected to catalytic deuteration with rhodium‐1,2‐bis(2,5‐diphenylphospholano)ethane. The reaction proceeded catalytically, and the mechanism was clearly illustrated
开发了有效的β-取代的α,β-不饱和酯的不对称氘代。为了保护羧酸酯部分并直接读出对映体过量,底物衍生自手性扁桃酸甲酯,并用铑1,2-双(2,5-二苯基膦基)乙烷进行催化氘化。该反应催化进行,并且使用DFT优化的结构清楚地说明了机理。