A Vaulted Biaryl Phosphoric Acid-Catalyzed Reduction of α-Imino Esters: The Highly Enantioselective Preparation of α-Amino Esters
作者:Guilong Li、Yuxue Liang、Jon C. Antilla
DOI:10.1021/ja070519w
日期:2007.5.1
A new method for the chiral phosphoric acid-catalyzedreduction of α-iminoesters using Hantzsch ester is described. A series of 11 α-iminoesters were evaluated, and it was shown that imino substrates derived from substituted aryl and alkyl keto esters could be reduced to the corresponding α-amino ester in excellent yield and in enantiomeric excesses from 94 to 99%. Catalyst loading was 5 mol % in
Modular construction of <i>N</i>-arylated amino acid esters enabled by a photoredox-catalyzed multicomponent reaction
作者:Qing Li、Hanhan Sun、Fengying Yan、Yuanyuan Zhao、Yicheng Zhang、Chao Zhou、Man-yi Han、Hongji Li、Xianwei Sui
DOI:10.1039/d3gc01633a
日期:——
An efficient photoredox-catalyzed three-component coupling reaction of aryl amine, glyoxalate and alkyltrifluoroborates has been reported. A variety of N-arylated aminoesters were constructed rapidly using an organic photocatalyst under mild conditions. Broad substrate scope and good functional group tolerance are the key features of this strategy.