作者:Biao Jiang、Ying Dou、Xiangya Xu、Min Xu                                    
                                    
                                        DOI:10.1021/ol702859y
                                    
                                    
                                        日期:2008.2.1
                                    
                                    A.novel and convenient protocol for synthesis of alpha-haloacrylates starting from phosphonium ylide and aldedyde or alcohol was described. Halodimethylsulfonium halide was used for the first time in halogenation of phosphonium ylide. Good yield as well as a high Z/E ratio were shown in representative cases, and an umpolung dimethyl sulfide-ylide species might be involved as an intermediate.