The effect of benzyl amine on the efficiency of the base-catalyzed transamination of α-keto esters
                                
                                    
                                        作者:Fazhen Xue、Xiao Xiao、Haining Wang、Yian Shi                                    
                                    
                                        DOI:10.1016/j.tet.2012.06.023
                                    
                                    
                                        日期:2012.8
                                    
                                    This paper describes the effect of benzyl amine on the base-catalyzed transamination of alpha-keto esters. Among various benzyl amines examined, o-HOC6H4CH2NH2 was found to be highly effective for the reaction, affording a wide variety of alpha-amino esters in good yields. The o-OH group of the benzyl amine facilitates the transamination process likely via H-bond. Moderate enantiomeric excess was obtained for alpha-amino ester when a quinine derived catalyst was used. (C) 2012 Elsevier Ltd. All rights reserved.