Anchoring Ni (II) on Fe3O4@tryptophan: A recyclable,green and extremely efficient magnetic nanocatalyst for one‐pot synthesis of 5‐substituted 1H‐tetrazoles and chemoselective oxidation of sulfides and thiols |
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| Authors: | Nazanin Moeini Taiebeh Tamoradi Mohammad Ghadermazi Arash Ghorbani‐Choghamarani |
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| Affiliation: | 1. Department of Chemistry, Faculty of Science, University of Kurdistan, Sanandaj, Iran;2. Department of Chemistry, Faculty of Science, Ilam University, Ilam, Iran |
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| Abstract: | A green, novel and extremely efficient nanocatalyst was successfully synthesized by the immobilization of Ni as a transition metal on Fe3O4 nanoparticles coated with tryptophan. This nanostructured material was characterized using Fourier transform infrared spectroscopy, transmission electron microscopy, scanning electron microscopy, energy‐dispersive X‐ray spectroscopy, thermogravimetric analysis, inductively coupled plasma optical emission spectroscopy, vibrating sample magnetometry and X‐ray diffraction. The prepared nanocatalyst was applied for the oxidation of sulfides, oxidative coupling of thiols and synthesis of 5‐substituted 1H‐tetrazoles. The use of non‐toxic, green and inexpensive materials, easy separation of magnetic nanoparticles from a reaction mixture using a magnetic field, efficient and one‐pot synthesis, and high yields of products are the most important advantages of this nanocatalyst. |
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| Keywords: | 5‐substituted 1H‐tetrazoles Fe3O4 nanoparticles nickel sulfides thiols |
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