Chiral Calcium Organophosphate-Catalyzed Enantioselective Electrophilic Amination of Enamides
                                
                                    
                                        作者:Fleur Drouet、Claudia Lalli、Hua Liu、Géraldine Masson、Jieping Zhu                                    
                                    
                                        DOI:10.1021/ol102625s
                                    
                                    
                                        日期:2011.1.7
                                    
                                    Highly enantioselective direct amination of enamides catalyzed by chiral nonracemic calcium bis(phosphate) complex 3g afforded optically active 1,2-hydrazinoimines 4. Following a subsequent in situ hydrolysis or reduction, 2-hydrazinoketones 5 or syn-1,2-disubstituted 1,2-diamines 6 were obtained in high yields and excellent enantiomeric excess.