N-heterocyclic carbene-palladium complex immobilized on silica nanoparticles. Recyclable catalyst for high yield Suzuki and Heck coupling reactions under mild conditions

Shikchya Tandukar, Ayusman Sen

Research output: Contribution to journalArticle

54 Citations (Scopus)

Abstract

N-heterocyclic carbene-palladium (NHC-Pd) complexes immobilized on ∼10 nm silica nanoparticles were synthesized. Because of the very high surface area and small size, these nanoparticles remain suspended in a variety of solvents with the catalyst sites readily accessible to the reactants. The catalysts showed excellent activity towards Suzuki coupling reaction of different aryl iodides and bromides with phenyl boronic acid using isopropanol: H2O as solvent. They were also effective for Heck coupling. The nano-sized particles can be easily recovered and repeatedly reused without loss of activity.

Original languageEnglish (US)
Pages (from-to)112-119
Number of pages8
JournalJournal of Molecular Catalysis A: Chemical
Volume268
Issue number1-2
DOIs
StatePublished - May 1 2007

Fingerprint

Palladium
carbenes
Silicon Dioxide
palladium
Silica
Boronic Acids
Nanoparticles
silicon dioxide
catalysts
nanoparticles
Catalysts
2-Propanol
Iodides
Bromides
iodides
bromides
acids
Acids
carbene

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Process Chemistry and Technology
  • Physical and Theoretical Chemistry

Cite this

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T1 - N-heterocyclic carbene-palladium complex immobilized on silica nanoparticles. Recyclable catalyst for high yield Suzuki and Heck coupling reactions under mild conditions

AU - Tandukar, Shikchya

AU - Sen, Ayusman

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N2 - N-heterocyclic carbene-palladium (NHC-Pd) complexes immobilized on ∼10 nm silica nanoparticles were synthesized. Because of the very high surface area and small size, these nanoparticles remain suspended in a variety of solvents with the catalyst sites readily accessible to the reactants. The catalysts showed excellent activity towards Suzuki coupling reaction of different aryl iodides and bromides with phenyl boronic acid using isopropanol: H2O as solvent. They were also effective for Heck coupling. The nano-sized particles can be easily recovered and repeatedly reused without loss of activity.

AB - N-heterocyclic carbene-palladium (NHC-Pd) complexes immobilized on ∼10 nm silica nanoparticles were synthesized. Because of the very high surface area and small size, these nanoparticles remain suspended in a variety of solvents with the catalyst sites readily accessible to the reactants. The catalysts showed excellent activity towards Suzuki coupling reaction of different aryl iodides and bromides with phenyl boronic acid using isopropanol: H2O as solvent. They were also effective for Heck coupling. The nano-sized particles can be easily recovered and repeatedly reused without loss of activity.

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