N-(2-hydroxyethyl)ammonium derivatives as protective agents for Pd(0) nanocolloids and catalytic investigation in Suzuki reactions in aqueous media
N-(2-hydroxyethyl)ammonium derivatives as protective agents for Pd(0) nanocolloids and catalytic investigation in Suzuki reactions in aqueous media
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DOI：
10.1016/j.catcom.2008.07.023
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发表时间：
2008-10-10
影响因子：
3.7
通讯作者：
Roucoux, Alain
中科院分区：
文献类型：
--
作者：
Denicourt-Nowicki, Audrey;Romagne, Marie-Laure;Roucoux, Alain
用化学还原法制备了Pd（0）的胶体悬浮液，并用高水溶性的N，N-二甲基-N-烷基-N-（2-羟乙基）卤化铵盐（HEAnX，n = 16或18，X = Cl或Br）有效地稳定了Pd（0）。在温和的条件下，研究了这些Pd（0）胶体在两相催化Suzuki反应中的作用。通过对催化体系和反应条件的优化。已经获得了联苯的高分离产率，显示了该方法的催化潜力。(C)2008 Elsevier B. V.保留所有权利。
Aqueous colloidal suspensions of Pd(0) were easily prepared by chemical reduction and efficiently stabilized by highly water-soluble N,N-dimethyl-N-alkyl-N-(2-hydroxyethyl)ammonium halide salts (HEAnX, n = 16 or 18, X = Cl or Br). These Pd(0) colloids have been investigated in biphasic catalytic Suzuki reactions under mild conditions. After optimization of catalytic system and reaction conditions. high isolated yields in biphenyl have been obtained showing catalytic potentialities of this approach. (C) 2008 Elsevier B.V. All rights reserved.