Reaction of phenols with t-butyl bromide–dimethyl sulphoxide. Methylthiomethylation versus bromination
作者:Arnaldo Dossena、Rosangela Marchelli、Giuseppe Casnati
DOI:10.1039/p19830001141
日期:——
t-Butyl bromide-activated dimethyl sulphoxide reacts with phenols to give either methylthiomethylation or bromination products. Several equilibria are shown to be simultaneously present in the system; however, by appropriate choice of several parameters (basicity, temperature, and reactant ratio) it is possible to drive the reaction selectively in one direction. A general discussion on the mechanism
叔丁基溴化物活化的二甲基亚砜与酚反应生成甲硫基甲基化或溴化产物。系统中同时存在多个平衡点。然而,通过几个参数适当选择(碱度,温度,和反应物比),可以选择性地驱动所述反应在一个方向上。对这些反应的机理进行了一般性的讨论。