作者:Sakineh Asghari、Fahimeh Molaee、Samaneh Ramezani                                    
                                    
                                        DOI:10.1080/10426500903348047
                                    
                                    
                                        日期:2010.8.25
                                    
                                    Deoxybenzoin undergoes a smooth reaction with acetylenic esters in the presence of triphenylphosphine to produce phosphorus ylides. Only the tert-butyl phosphorus ylide undergoes an intramolecular Wittig reaction to produce highly strained cyclobutenes in boiling toluene, which spontaneously undergoes ring-opening reactions to produce highly functionalized 1,3-dienes. The unstable ylides undergo a 1,2-proton transfer and the loss of PPh3 to produce functionalized alkenes.