NEW ROUTE TO SYNTHETIC ANALOGUES OF ROCAGLAMIDE AND AGLAFOLINE USING CASCADE TRANSFORMATIONS INITIATED BY OXY-COPE REARRANGEMENT OF BIS-ALKYNES
                        
                            
                                申请人:Alabugin Igor
                            
                            
                                公开号:US20130165683A1
                            
                            
                                公开(公告)日:2013-06-27
                            
                            A method for preparing a cyclobutene compound or a cyclopentenone is provided. The method comprises contacting an α,β-diketone with a metal acetylide at a temperature below 0° C. to thereby form a reaction mixture comprising a bis-alkyne precursor. The bis-alkyne precursor rearranges into a bis-allenic intermediate, which undergoes further rearrangement into the cyclobutene compound or the cyclopentenone compound as the temperature of the reaction mixture increases from below 0° C. to above 0° C.