About this Materials Science article
Immobilized Antimony Species on Magnetite: a Novel and Highly Efficient Magnetically Reusable Nanocatalyst for Direct and Gram-scale Reductive-coupling of Nitroarenes to Azoarenes† by Zeynizadeh, Behzad; Faraji, Fariba is a Materials Science article available to read on EtoBox.
In this study, magnetic nanoparticles of FeO@SbF from the immobilization of SbF on magnetite were synthesized. The prepared nanocomposite system was then characterized using scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, energy-dispersive X-ray spectroscopy, vibrating sample magnetometry and inductively coupled plasma optical emission spectroscopy. Next, the catalytic activity of FeO@SbF MNPs was highlighted by one-pot reductive-coupling of aromatic nitro compounds to the corresponding azoarene materials with NaBH. The reactions were carried out in refluxing EtOH within 6-25 min to afford the products in high yields. The reusability of the Sb-magnetite system was also studied for 6 consecutive cycles without significant loss of catalytic activity. This synthetic protocol provided several advantages in terms of introducing a novel catalytic system based on antimony species for direct and gram-scale preparation of azoarenes from nitroarenes, low loading of the nanocatalyst, mild reaction conditions, using ethanol as a green and economic solvent and high yield of the products.
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- Author
- Zeynizadeh, Behzad; Faraji, Fariba
- Publisher
- The Royal Society of Chemistry; Royal Society of Chemistry; Cambridge: RSC Publishing; Royal Society of Chemistry (RSC) (ISSN 2046-2069)
- Published
- 2019
- Language
- EN
- Field
- Materials Science (Physical Sciences)