在与芳基醛的苄基还原反应中,H 3 PO 3首次被用作还原剂和促进剂。通过使用H 3 PO 3 / I 2组合,各种芳族醛经过苄基碘中间体与芳烃进行碘化反应和Friedel-Crafts型反应,可轻松以高收率生产苄基碘和二芳基甲烷。分子内环化反应也发生,得到相应的环状化合物。这种新策略具有易于处理,低成本和无金属的条件。
It was found that benzyl chlorides and bromides could directly react with electron‐rich arenes, which provided an example of promoter‐ and additive‐free benzylation of arenes.
发现苄基氯和溴化物可以直接与富电子芳烃反应,这为芳烃的无助剂和无添加剂苄基化提供了一个例子。
Benzylation of benzene and alkylbenzenes at low temperatures
作者:P. Finocchiaro
DOI:10.1016/s0040-4020(01)90726-4
日期:1971.1
Reactivity of benzene and certain alkylbenzenes (toluene, p-xylene, mesitylene) during benzylation with benzylchloride and some derivatives (α-chloroethylbenzene, benzhydrylchloride, chloromethylmesitylene) has been determined under non-isomerizing conditions, in the temperature range −10° and −120°, in ethyl chloride solution with AlCl3 as a catalyst.