Iron(III)-Promoted Oxidative Coupling of Naphthylamines: Synthetic and Mechanistic Investigations
                                
                                    
                                        作者:Xin-Le Li、Jin-Hua Huang、Lian-Ming Yang                                    
                                    
                                        DOI:10.1021/ol202058r
                                    
                                    
                                        日期:2011.9.16
                                    
                                    A facile route to the synthesis of 1,1'-binaphthyl-4,4'-diamines (naphthidines) and 1,1'-binaphthyl-2,2'-diamines (BINAMs) was developed by the oxidative homocoupling of 1- and 2-naphthylamines, respectively, using FeCl(3) as oxidant and K(2)CO(3) as base in 1,2-dichloroethane under ambient conditions. A preliminary mechanistic investigation was performed by the ESR spectroscopy and intermediate-trapping technique.