作者:Hye-Sun Jeon、Sangho Koo                                    
                                    
                                        DOI:10.1016/j.tetlet.2004.07.146
                                    
                                    
                                        日期:2004.9
                                    
                                    Allylic sulfones undergo the conjugate addition to diethyl chloroisopropylidenemalonate, followed by intramolecular cyclopropanation. DBU-promoted ring opening and subsequent desulfonation reactions of the resulting adduct produce the conjugated polyene chains with the 1,4-dimethyl substitution.
                                    烯丙基砜经过共轭加成到
氯异丙基
丙二烯丙二酸二乙酯中,然后进行分子内
环丙烷化。
DBU促进的开环反应和随后的加合物脱
硫反应产生具有1,4-二甲基取代的共轭多烯链。