Chiral Binaphthylthiophosphoramide−Cu(I)-Catalyzed Asymmetric Addition of Diethylzinc to <i>N</i>-Sulfonylimines
                                
                                    
                                        作者:Chun-Jiang Wang、Min Shi                                    
                                    
                                        DOI:10.1021/jo034269n
                                    
                                    
                                        日期:2003.8.1
                                    
                                    In the presence of a catalytic amount of chiral binaphthylthiophosphoramide L2 (6 mol %) and Cu(I) (3 mol %), the asymmetric addition of diethylzinc to N-sulfonylimines could be achieved in good yields with moderate to high ee (63-93% ee) at 0 degreesC in toluene. A novel chiral binaphthylthiophosphoramide ligand system for this asymmetric addition reaction has been explored.