Intermolecular Friedel–Crafts reaction catalyzed by InCl3
摘要:
Our recent discovery that In(III) salts were able to activate halides catalytically under mild conditions for the intermolecular Friedel-Crafts cyclization prompted us to explore this highly efficient activation in intermolecular Friedel-Crafts reactions. The alkylation of p-xylene with allylic and benzylic halides was demonstrated under catalytic and mild condition to afford in some cases quantitative yields of the monoalkylated products without the need to employ large excesses of reactants. (c) 2007 Elsevier Ltd. All rights reserved.
The Friedel–Craftsbenzylation of arenes using benzyl alcohols activated in situ with XtalFluor-E is described. A wide range of 1,1-diarylmethanes and 1,1,1-triarylmethanes were prepared under experimentally simple and mild conditions, without the need for a transition metal or a strong Lewis acid. Notably, the reactivity observed demonstrates the potential of XtalFluor-E to induce C–OH bond ionization
描述了使用用XtalFluor-E原位活化的苯甲醇对芳烃进行的Friedel-Crafts苄基化。在实验上简单温和的条件下,无需过渡金属或强路易斯酸,即可制备各种1,1,1-二芳基甲烷和1,1,1-三芳基甲烷。值得注意的是,观察到的反应性表明XtalFluor-E可能诱导苄醇的C-OH键电离和S N 1反应性。
Intermolecular Friedel–Crafts reaction catalyzed by InCl3
作者:Miho Kaneko、Ryuji Hayashi、Gregory R. Cook
DOI:10.1016/j.tetlet.2007.08.011
日期:2007.10
Our recent discovery that In(III) salts were able to activate halides catalytically under mild conditions for the intermolecular Friedel-Crafts cyclization prompted us to explore this highly efficient activation in intermolecular Friedel-Crafts reactions. The alkylation of p-xylene with allylic and benzylic halides was demonstrated under catalytic and mild condition to afford in some cases quantitative yields of the monoalkylated products without the need to employ large excesses of reactants. (c) 2007 Elsevier Ltd. All rights reserved.