Preparation of Triazoloindoles via Tandem Copper Catalysis and Their Utility as α-Imino Rhodium Carbene Precursors
                                
                                    
                                        作者:Yanpeng Xing、Guorong Sheng、Jing Wang、Ping Lu、Yanguang Wang                                    
                                    
                                        DOI:10.1021/ol5002347
                                    
                                    
                                        日期:2014.2.21
                                    
                                    3-Sulfonyl[1,2,3]triazolo[4,5-b]indoles were efficiently prepared via a tandem catalysis process involving intramolecular ligand stabilized CuAAC and Cu-catalyzed C-N coupling. The obtained 3-sulfonyl[1,2,3]triazolo[4,5-b]indoles could be utilized as a-imino rhodium carbene precursors for the construction of a range of valuable indole molecules including pyrrolo[2,3-b] indoles, spirocyclopropyl iminoindoles, 2,3-dihydropyrrolo[2,3-b]indoles, 3,3'-biindoles, and 2,3'-biindoles.