MgBr2 supported on Fe3O4@SiO2 ~ urea nanoparticle: An efficient catalyst for ortho‐formylation of phenols and oxidation of benzylic alcohols |
| |
| Authors: | Ebrahim Soleimani Nadieh Yaesoobi Hamid Reza Ghasempour |
| |
| Affiliation: | Department of Chemistry, Razi University, Kermanshah, Iran |
| |
| Abstract: | Urea was successfully immobilized on the surface of chloropropyl‐modified Fe3O4@SiO2 core–shell magnetic nanoparticles, then supported by MgBr2 and acts as a unique catalyst for oxidation of benzylic alcohols to aldehydes and ketones, and ortho‐formylation of phenols to salicylaldehydes. The prepared catalyst was characterized by FT‐IR, transmission electron microscopy, scanning electron microscopy, X‐ray powder diffraction, dispersive X‐ray spectroscopy, CHN and TGA. It was found that Fe3O4@SiO2 ~ urea/MgBr2 showed higher catalytic activity than homogenous MgBr2, and could be reused several times without significant loss of activity. |
| |
| Keywords: | alcohol formylation magnetite nanocatalyst MgBr2 oxidation salicylaldehyde |
|
|
