Copper-Catalyzed Synthesis of Quinoxalines with <i>o-</i>Phenylenediamine and Terminal Alkyne in the Presence of Bases
                                
                                    
                                        作者:Wen Wang、Yongwen Shen、Xu Meng、Mingming Zhao、Yongxin Chen、Baohua Chen                                    
                                    
                                        DOI:10.1021/ol201664x
                                    
                                    
                                        日期:2011.9.2
                                    
                                    A novel way of synthesizing quinoxalines efficiently through cyclization of o-phenylenediamine and terminal alkyne by Cu(II) and bases is developed. This reaction proceeds smoothly to give the products in moderate to good yields.