作者:Dov Beruben、Ilane Marek、Jean F. Normant、Nicole Platzer                                    
                                    
                                        DOI:10.1021/jo00113a032
                                    
                                    
                                        日期:1995.4
                                    
                                    1,1- or n,n-Bismetallic reagents bearing a methoxymethyl ether in the gamma position undergo cyclization at room temperature to give monometalated, diastereoselectively substituted cyclopropanes, The nature of the substituents is crucial for this diastereoselection, a pi-chelation between one metal and a properly located unsaturation, as well as 1,2-strain, are proposed to explain the steric outcome of these reactions.