Iodine monobromide (IBr) at low temperature: A superior protocol for diastereoselective cyclizations of homoallylic carbonates
                                
                                    
                                        作者:James J.-W. Duan、Paul A. Sprengeler、Amos B. Smith                                    
                                    
                                        DOI:10.1016/s0040-4039(00)79009-5
                                    
                                    
                                        日期:1992.10
                                    
                                    Iodine monobromide (IBr) induces efficient electrophilic cyclizations of homoallylic t-butyl carbonates in toluene or methylene chloride al low temperature, affording significantly better diastereoselectivity than iodine (I2) in acetonitrile.