Divergent Outcomes of Gold(I)-Catalyzed Indole Additions to 3,3-Disubstituted Cyclopropenes
                                
                                    
                                        作者:Paul C. Young、Maximillian S. Hadfield、Lynn Arrowsmith、Kristina M. Macleod、Richard J. Mudd、James A. Jordan-Hore、Ai-Lan Lee                                    
                                    
                                        DOI:10.1021/ol203418u
                                    
                                    
                                        日期:2012.2.3
                                    
                                    Depending on the conditions employed, gold(I)-catalyzed addition of indoles to 3,3-disubstituted cyclopropenes can be controlled to yield either 3-(E)-vinylindoles (3) or bis-indolylalkanes (4). If the cyclopropene substituents are sterically bulky, unprecedented gold-catalyzed oxidation under air occurs to yield bis-indolylalkene (5) and epoxide (6) at room temperature.