A new coupling reaction of propargyl carbonates mediated by Ti(O i Pr) 2 Cl 2 /Mg
                                
                                    
                                        作者:Fanglong Yang、Gang Zhao、Yu Ding、Zongbao Zhao、Yueqing Zheng                                    
                                    
                                        DOI:10.1016/s0040-4039(01)02381-4
                                    
                                    
                                        日期:2002.2
                                    
                                    A new homocoupling reaction of 1,1-disubstituted propargyl carbonates or 1-monosubstituted propargyl carbonates, mediated by Ti(OiPr)(2)Cl-2/Mg in ether at 0degreesC, was found to Corm symmetric 1,5-hexadiynes and 1-allenyl-5-ynes in moderate to high yields in various ratios. (C) 2002 Elsevier Science Ltd. All rights reserved.