Abstract
This study addressed the preparation and characterization of polyethylene glycol-substituted 1-methylimidazolium hydroxide supported on magnetic nanoparticles (MNP@PEG-ImOH) by FESEM, FT-IR, EDAX, TEM, TGA, VSM, and XRD techniques. The catalytic activity of MNP@PEG-ImOH has been examined in Knoevenagel condensation between active methylene compounds and aromatic aldehydes in aqueous medium at room temperature. Numerous benefits of the catalytic system, such as higher yields of the products, shorter reaction time, reusability and recyclability of the catalyst, simplified work-up, and more acceptable reaction conditions, have been demonstrated. It is possible to easily isolate the catalyst from the reaction mixture by an external magnet and reapply it in the consequent reactions with no remarkable loss of activity.
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Fallah-Mehrjardi, M., Behjatmanesh-Ardakani, R. & Saidian, S. Magnetic Nanoparticle-Supported Basic Ionic Liquid: A Reusable Phase-Transfer Catalyst for Knoevenagel Condensation in Aqueous Medium. Russ J Org Chem 58, 144–151 (2022). https://doi.org/10.1134/S1070428022010201
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DOI: https://doi.org/10.1134/S1070428022010201