Journal
RESEARCH ON CHEMICAL INTERMEDIATES
Volume 42, Issue 6, Pages 6089-6103Publisher
SPRINGER
DOI: 10.1007/s11164-016-2447-5
Keywords
Heterogeneous catalyst; Coumarin; Pechmann reaction; Magnetic nanoparticles
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Funding
- Islamic Azad University central Tehran branch
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This paper reports an efficient heterogeneous catalyst based on sulfonic acid functionalization of magnetic nanoparticles. This new catalyst was prepared using the reaction between magnetic nanoparticles and sodium 2-bromoethane-1-sulfonate. Magnetic nanoparticles functionalized ethane sulfonic acid (MNESA) was found as efficient catalyst for the synthesis of coumarin derivatives using Pechmann condensation under mild condition. This reaction was catalyzed by MNESA under solvent-free condition at 90 A degrees C, to give the corresponding products in excellent yields. The catalyst is easily separated from the reaction condition and can be reused for several times with consistence in the activity.
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