towards phosphineoxides and phosphonates has been successfully developed through the desulfonative coupling of various sulfones with secondary phosphineoxides and phosphites. This protocol features simple experimental procedures under mild conditions (i. e., catalyst‐ and oxidant‐free, room temperature and open to air). By doing so, a variety of alkynyl, alkenyl and allyl phosphineoxides or phosphonates
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.