作者:Cai, Bao-Zhong、Blackburn, G. Michael                                    
                                    
                                        DOI:10.1080/00397919708005916
                                    
                                    
                                        日期:1997.11
                                    
                                    3,4-Bisphosphono-1,2,4,5-hexatetraenes, prepared from the reaction of chlorophosphine/phosphite with 2,4-hexadiyne-1,6-diols, underwent an intramolecular [2+2]-cycloaddition to form 1,2-bis(diethylphosphonyl)-3,4-bis(isopropylenyl)cyclobutene.