Journal
APPLIED ORGANOMETALLIC CHEMISTRY
Volume 33, Issue 3, Pages -Publisher
WILEY
DOI: 10.1002/aoc.4729
Keywords
baclofen; multi-walled carbon nanotubes; nanocatalyst; palladium; Sonogashira
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Funding
- Pharmaceutical Sciences Branch, (IAUPS), Tehran, Iran
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The baclofen-MWCNTs-Pd nanocatalyst was synthesized through covalent grafting of baclofen molecules onto surface-modified carbon nanotubes and immobilizing Pd nanoparticles by the baclofen ligands. The chemical structure of the produced nanocatalyst was studied by Raman spectroscopy, Fourier transform-infrared spectroscopy, energy-dispersive spectroscopy (EDS), elemental mapping and inductively coupled plasma analysis. Also, its surface morphology was determined using the scanning and transmission electron microscopy techniques. Furthermore, the obtained baclofen-MWCNTs-Pd nanocatalyst is demonstrated to exhibit very high activity as a heterogeneous phosphine-free catalyst in Sonogashira cross-coupling of aryl halides by giving good to excellent yields of different products. In addition, the nanocatalyst can be reused four times without any significant leaching or loss of activity.
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