N-Methylephedrium Salts as Chiral Surfactants for Asymmetric Hydrogenation in Neat Water with Rhodium(0) Nanocatalysts
作者:Elodie Guyonnet Bilé、Audrey Denicourt-Nowicki、Rita Sassine、Patricia Beaunier、Franck Launay、Alain Roucoux
DOI:10.1002/cssc.201000206
日期:2010.11.22
A new family of chiral surfactants derived from N‐methylephedrine possessing different counter‐ions (Br−, , (S)‐(−)‐lactate−) is easily prepared and used as efficient protective agents of rhodium(0) nanoparticles. The resulting, well‐characterized materials prove to be active catalysts in the hydrogenation of ethylpyruvate in neat water, with modest enantiomeric excesses.
手性表面活性剂的新家族衍生自N-(BR具有不同抗衡离子甲基麻黄碱- ,,(小号) - ( - ) -乳酸- )容易制备并用作(0)纳米粒子的铑有效的保护剂。结果证明,表征良好的材料是丙酮酸在纯水中加氢的活性催化剂,对映体过量不大。