Journal
NEW JOURNAL OF CHEMISTRY
Volume 41, Issue 17, Pages 9291-9298Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6nj03985e
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Funding
- University Grant Commission, New Delhi, India
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An imidazolium based ionic liquid, 1-methyl-3-(3-triethoxysilylpropyl) imidazolium chloride, could be immobilized on the surface of silica-coated ferrite nanoparticles (Fe3O4@SiO2-IL) and could be evaluated as a recyclable catalyst for the N-formylation of amines using formic acid under solvent-free conditions. The prepared organic-inorganic hybrid material could be characterized by various techniques such as Fourier Transform Infrared Spectroscopy (FT-IR), X-Ray Diffraction (XRD), Transmission Electron Microscopy (TEM), Scanning Electron Microscopy (SEM), Energy Dispersive X-Ray Spectroscopy (EDS) and Vibrating Sample Magnetometer (VSM) studies. Utilizing the ferromagnetic nature of Fe3O4, the prepared catalyst could be easily recovered after completion of the reaction by using an external magnetic field. The catalyst could be reused for up to five runs with remarkable catalytic activity. The described methodology has various advantages when compared with other methods that rely on homogeneous catalysts.
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