Journal
CANADIAN JOURNAL OF CHEMISTRY
Volume 95, Issue 1, Pages 16-21Publisher
CANADIAN SCIENCE PUBLISHING
DOI: 10.1139/cjc-2016-0258
Keywords
nanostructured catalyst; heterogeneous; silica-bonded 1,4-diaza-bicyclo[2.2.2]octane-sulfonic acid chloride (SBDBSAC); bis-coumarin; solvent free
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Funding
- Bu-Ali Sina University
- Iran National Science Foundation (INSF) [BN093]
- Sayyed Jamaleddin Asadabadi University
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A novel nanostructured heterogeneous catalyst, namely silica-bonded 1,4-diaza-bicyclo[2.2.2]octane-sulfonic acid chloride (SBDBSAC), has been synthesized and fully characterized by several techniques, including Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermal gravimetric analysis (TGA), differential thermal gravimetric (DTG), scanning electron microscope (SEM), and energy dispersive X-ray analysis (EDX). Afterward, the nanostructured catalyst was utilized as an efficient catalyst for the synthesis of bis-coumarin derivatives by the condensation reaction of arylaldehydes with 4-hydroxycoumarin at 70 degrees C under solvent-free conditions.
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