Homeopathic catalytic activity and atom-leaching mechanism in Miyaura-Suzuki reactions under ambient conditions with precise dendrimer-stabilized Pd nanoparticles

被引：305
作者：
Diallo, Abdou Khadri
Ornelas, Catia
Salmon, Lionel
Aranzaes, Jaime Ruiz
Astruc, Didier [1 ]
机构：
[1] Univ Bordeaux 1, CNRS, UMR 5255, ISM, F-33405 Talence, France
[2] CNRS, LCC, UPR 8241, F-31077 Toulouse 04, France
来源：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2007年 / 46卷 / 45期
关键词：
C-C coupling; catalysis; dendrimers; nanoparticles; palladium;
D O I：
10.1002/anie.200703067
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
(Chemical Equation Presented) What generation gap? Three generations (C0, G1, G2) of dendrimer-stabilized Pd nanoparticles (PdNPs) synthesized by click chemistry catalyze Suzuki reactions of PhX (X = I or Br) at 25°C with increasing catalytic activity as their concentration is decreased: A turnover number of 540 000 was observed for the G0 catalyst 1 ppm in Pd atoms. Extraction of the PdNPs with alkanethiols yields robust Suzuki catalysts for PhI only (see scheme). © 2007 Wiley-VCH Verlag GmbH & Co. KGaA.
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收藏
页码：8644 / 8648
页数：5
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