Recoverable Palladium Catalysts for Suzuki-Miyaura Cross-Coupling Reactions Based on Organic-Inorganic Hybrid Silica Materials Containing Imidazolium and Dihydroimidazolium Salts

被引：42
|
作者：
Trilla, Montserrat [1 ]
Borja, Guadalupe [1 ]
Pleixats, Roser [1 ]
Man, Michel Wong Chi [2 ]
Bied, Catherine [2 ]
Moreau, Joeel J. E. [2 ]
机构：
[1] Univ Autonoma Barcelona, Dept Chem, E-08193 Barcelona, Spain
[2] Ecole Natl Super Chim Montpellier, CNRS, Inst Charles Gerhardt Montpellier, UMR 5253,UM2,UM1, F-34296 Montpellier 5, France
来源：
ADVANCED SYNTHESIS & CATALYSIS | 2008年 / 350卷 / 16期
关键词：
catalyst recycling; nanoparticles; organic-inorganic hybrid composites; palladium; sol-gel processes; Suzuki-Miyaura reaction;
D O I：
10.1002/adsc.200800455
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The systems formed by palladium acetate [Pd(OAC)(2)] and hybrid silica materials prepared by sol-gel from monosilylated imidazolium, and disilylated dihydroimidazolium salts show catalytic activity in Suzuki-Miyaura cross-couplings with challenging aryl bromides and chlorides. They are very efficient as recoverable catalysts with aryl bromides. Recycling is also possible with aryl chlorides, although with lower conversions. In situ formation of palladium nanoparticles has been observed in recycling experiments.
引用
收藏
页码：2566 / 2574
页数：9
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