Magnetic Nanoparticle-Supported Basic Ionic Liquid: A Reusable Phase-Transfer Catalyst for Knoevenagel Condensation in Aqueous Medium

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 Knoeven...

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Bibliographic Details
Published in:Russian journal of organic chemistry 2022, Vol.58 (1), p.144-151
Main Authors: Fallah-Mehrjardi, M., Behjatmanesh-Ardakani, R., Saidian, S.
Format: Article
Language:English
Subjects:
Aldehydes
Aqueous solutions
Aromatic compounds
Catalytic activity
Chemistry
Chemistry and Materials Science
Condensates
Ionic liquids
Nanoparticles
Organic Chemistry
Phase transfer catalysts
Polyethylene glycol
Reaction time
Recyclability
Room temperature
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Summary: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.
ISSN:1070-4280
1608-3393
DOI:10.1134/S1070428022010201