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
Direct bromoalkoxylation of enones under acid-free conditions
作者:Bowen Fang、Lele Zhai、Zhongqin Li、Huilin Li
DOI:10.1016/j.tetlet.2023.154647
日期:2023.8
Difunctionalization of alkene conceptually serves as an appealing way to generatemolecularcomplexity and synthesis of functional molecules. Bromoalkoxylation is an important method for 1,2-difunctionalization of alkene. However, this transformation generally requires an oxidant or a strong activator like Brønsted acid. Herein, we report a direct protocol for bromoalkoxylation of enone-type alkenes under acid-free