Efficient Synthesis of 2-Methylene-3phosphorylalkanoates: Phosphorylation of Baylis–Hillman Bromides via an S<sub> <i>N</i> </sub>2-S<sub> <i>N</i> </sub>2′ Strategy
作者:Liancheng Yang、Longhe Xu、Chunrui Yu
DOI:10.1080/10426500802418545
日期:2009.8.6
A novel synthesis of 2-methylene-3-phosphorylalkanoates under mild conditions is described. Thus, Balyis-Hillman bromides react with secondary phosphine oxides or H-phosphonites in the presence of DABCO via an S(N)2-S(N)2' protocol to produce the target compounds in good yields.