Diastereoselective, lanthanide-catalysed, inverse electron-demand diels-alder (IEDDA) reactions of 3-carbomethoxy-2-pyrone (3-CMP) derivatives
                                
                                    
                                        作者:István E Markó、Graham R Evans                                    
                                    
                                        DOI:10.1016/s0040-4039(00)77028-6
                                    
                                    
                                        日期:1994.4
                                    
                                    Cycloaddition reactions between the chiral 2-pyrone derivatives 3 and various dienophiles, catalysed by lanthanide shift reagents, afford bicyclic lactones 8 in high diastereomeric excesses.