Enantioselective Synthesis of Bicyclic δ-Lactones via N-Heterocyclic Carbene-Catalyzed Cascade Reaction
                                
                                    
                                        作者:Zhi-Qin Liang、Dong-Ling Wang、Han-Ming Zhang、Song Ye                                    
                                    
                                        DOI:10.1021/acs.orglett.5b02695
                                    
                                    
                                        日期:2015.10.16
                                    
                                    The N-heterocyclic carbene-catalyzed cascade reaction of enals with malonates to give bicyclic delta-lactones was developed. The cyclopentane- and cyclohexane-fused delta-lactones with three continued stereocenters were obtained in high yields with excellent diastereo- and high enantioselectivities.