One-Pot Transition-Metal-Free Synthesis of Dibenzo[<i>b</i>,<i>f</i>]oxepins from 2-Halobenzaldehydes
                                
                                    
                                        作者:Young Lok Choi、Hye Sun Lim、Hwan Jung Lim、Jung-Nyoung Heo                                    
                                    
                                        DOI:10.1021/ol302371s
                                    
                                    
                                        日期:2012.10.5
                                    
                                    A one-pot transition-metal-free, base-mediated synthesis of dibenzo[b,f]oxepins was developed. The reaction of 2-halobenzaldehydes with (2-hydroxyphenyl)acetonitriles proceeds via a sequential aldol condensation and intramolecular ether formation reaction in the presence of Cs2CO3 and molecular sieves in toluene.