Synthesis of crab type Aminomethyldiphosphine‐Oxovanadium(IV) complexes supported on magnetic Nano particles: Selective and recoverable catalysts in vitamin K3 synthesis |
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| Authors: | Serhan Uru? Mahmut Çaylar Ferudun Koçer |
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| Institution: | 1. Chemistry Department, Faculty of Science and Letters, Kahramanmaras, Süt?ü ?mam University, Kahramanmara?, Turkey;2. Research and Development Centre for University‐Industry‐Public Relations, Kahramanmaras, Süt?ü ?mam University, Kahramanmara?, Turkey;3. Bioengineering Sciences, Graduate School of Natural and Applied Sciences, Kahramanmaras, Süt?ü ?mam University, Kahramanmara?, Turkey |
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| Abstract: | Nano Fe3O4 particles were obtained in microvawe oven using closed system. Oxovanadium(IV) complexes of Fe3O4@SiO2@(aminomethylphosphine) type ligands were synthesized and characterized using SEM, EDX, TEM, UV‐Visible, XRD, FT‐IR and TG/DTA techniques. Catalytic properties of the synthesized pincer type oxovanadium(IV)‐aminomethylphosphine complexes supported on magnetic nano structure were investigated in the synthesis of 2‐methyl‐1, 4‐naphthoquinone (Vitamin K3, menadione, 2MNQ) from 2‐methyl naphthalene (2MN) in hydrogen peroxide, acetic acid and sulfuric acid. Magnetic‐nano particle supported oxovanadium(IV)‐aminomethylphosphine type complexes were very efficient catalysts with the 51.36‐55.20 % selectivities in conversions of 89.78‐95.01 %. Besides, the hetergeneous complexes were very active in five cycling tests on avarage evaluated in the reusability. |
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| Keywords: | catalysis Fe3O4 nano phosphine vanadium |
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