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

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 a...

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Bibliographic Details
Published in:Advanced synthesis & catalysis 2008-11, Vol.350 (16), p.2566-2574
Main Authors: Trilla, Montserrat, Borja, Guadalupe, Pleixats, Roser, Man, Michel Wong Chi, Bied, Catherine, Moreau, Joël J. E.
Format: Article
Language:English
Subjects:
Catalysis
catalyst recycling
Chemical Sciences
Material chemistry
nanoparticles
organic‐inorganic hybrid composites
palladium
sol‐gel processes
Suzuki–Miyaura reaction
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Summary: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.
ISSN:1615-4150
1615-4169
DOI:10.1002/adsc.200800455