Comparative study of the vicinal functionalization of olefins with 2:1 bromide/bromate and iodide/iodate reagents
作者:Manoj K. Agrawal、Subbarayappa Adimurthy、Bishwajit Ganguly、Pushpito K. Ghosh
DOI:10.1016/j.tet.2009.01.095
日期:2009.4
halohydrins, halo methyl ethers, and halo acetates from olefins using 2:1 Br−/BrO3− and I−/IO3− reagents. In many cases both reagents afforded products selectively in high yields. The highest halogen atom efficiencies attained were 97% and 93% for Br−/BrO3− and I−/IO3−, respectively. Of the two reagents, I−/IO3− was established to be the preferred reagent for vicinal functionalization of linear alkenes and
比较评价在邻位卤代醇,卤代甲基醚和卤代乙酸盐的合成由从使用2-烯烃:1溴- /的BrO 3 -和我- / IO 3 -试剂。在许多情况下,两种试剂都以高收率选择性地提供产物。得到最高卤素原子效率为97%和溴93%- /的BrO 3 -和我- / IO 3 - ,分别。这两个试剂,我- / IO 3 -已确定“丙烯酰胺”是用于直链烯烃的邻位官能化以及用于制备卤代乙酸酯的优选试剂。然而,只有溴- /的BrO 3 -是有效的邻位官能反式-二苯乙烯和查耳酮。