Functionalized Magnetic Mesoporous Silica Nanoparticle-Supported Palladium Catalysts for Carbonylative Sonogashira Coupling Reactions of Aryl Iodides

Suzana Natour, Raed Abu-Reziq*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

34 Scopus citations

Abstract

Magnetic mesoporous silica nanoparticles (MMSN) were prepared and used as a support for palladium catalysts. MMSN with a surface area of 1909 m2 g-1 were synthesized by a nanoemulsification process involving the dispersion of hydrophobic magnetite nanoparticles in chloroform in the presence of cetyltrimethylammonium bromide, followed by the addition of tetraethoxysilane and its polycondensation by a sol-gel route. The MMSN were modified with phosphine and N-heterocyclic carbene-based ligands, which provided coordination sites for conjugation with a palladium catalyst. These modified particles were fully characterized and employed as catalyst nanosupports. The palladium catalyst was immobilized on the surface and within the pores of MMSN and applied in copper-free carbonylative Sonogashira coupling reactions of aryl iodides with terminal alkynes.

Original languageAmerican English
Pages (from-to)2230-2240
Number of pages11
JournalChemCatChem
Volume7
Issue number14
DOIs
StatePublished - 13 Jul 2015

Bibliographical note

Publisher Copyright:
© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Keywords

  • carbonylation
  • heterogeneous catalysis
  • nanoparticles
  • palladium
  • sol-gel processes

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