Department of Chemistry, University of Iowa, Iowa City, Iowa 52242-1294, United States.
J Org Chem. 2011 Apr 15;76(8):2875-9. doi: 10.1021/jo200137k. Epub 2011 Mar 15.
Benzyl phosphonate esters often serve as reagents in Horner-Wadsworth-Emmons reactions. In most cases, they can be prepared from benzylic alcohols via formation of the corresponding halide followed by an Arbuzov reaction. To identify a more direct synthesis of phosphonate esters, we have developed a one-flask procedure for conversion of benzylic and allylic alcohols to the corresponding phosphonates through treatment with triethyl phosphite and ZnI(2).
苄基膦酸酯通常可用作 Horner-Wadsworth-Emmons 反应的试剂。在大多数情况下,它们可以通过形成相应的卤化物,然后通过 Arbuzov 反应,从苄基醇制备得到。为了寻找更直接的膦酸酯合成方法,我们开发了一种在一个烧瓶中通过三乙基膦酸酯和 ZnI(2)处理将苄基和烯丙基醇转化为相应的膦酸酯的方法。