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- Title
The first urea-based ionic liquid-stabilized magnetic nanoparticles: an efficient catalyst for the synthesis of bis(indolyl)methanes and pyrano[2,3- d]pyrimidinone derivatives.
- Authors
Zolfigol, Mohammad Ali; Ayazi ‐ Nasrabadi, Roya; Baghery, Saeed
- Abstract
Urea-based ionic liquid stabilized on silica-coated Fe3O4 magnetic nanoparticles, {Fe3O4@SiO2@(CH2)3-Urea-SO3H/HCl}, as an unexceptionable and smooth releasing urea fertilizer in alkali soils was synthesized and fully characterized using Fourier transform infrared, UV-visible and energy-dispersive X-ray spectroscopies, X-ray diffraction, scanning and transmission electron microscopies, and thermogravimetric analysis. The nanostructure catalyst as a novel, green and efficient catalyst was applied for the synthesis of bis(indolyl)methane derivatives via the between 2-methylindole and aldehydes at room temperature under solvent-free conditions. Also, pyrano[2,3- d]pyrimidinone derivatives were prepared in the presence of the nanomagnetic urea-based catalyst by the one-pot three-component of 1,3-dimethylbarbituric acid, aldehydes and malononitrile under solvent-free conditions at 60 °C. To the best of our knowledge, this is the first report of the synthesis of urea-based ionic liquid stabilized on silica-coated Fe3O4 magnetic nanoparticles. So the present work can open up a new and promising insight in the course of rational design, synthesis and applications of task-specific fertilizer-based nanomagnetic with desirable properties as unexceptionable substances for sustainable processes. Copyright © 2016 John Wiley & Sons, Ltd.
- Subjects
MAGNETIC nanoparticles; IONIC liquids; IRON catalysts; THERMOGRAVIMETRY; NANOSTRUCTURED materials; FOURIER transform infrared spectroscopy
- Publication
Applied Organometallic Chemistry, 2016, Vol 30, Issue 5, p273
- ISSN
0268-2605
- Publication type
Article
- DOI
10.1002/aoc.3428