M(II) Schiff base complexes (M = zinc, manganese, cadmium, cobalt, copper, nickel, iron, and palladium) supported on superparamagnetic Fe3O4@SiO2 nanoparticles: synthesis, characterization and catalytic activity for Sonogashira–Hagihara coupling reactions

被引：0
|
作者：
Mohsen Esmaeilpour
Jaber Javidi
Fatemeh Nowroozi Dodeji
Mehdi Mokhtari Abarghoui
机构：
[1] Shiraz University,Chemistry Department, College of Science
[2] Shahid Beheshti University of Medical Sciences,Department of Pharmaceutics, School of Pharmacy
[3] Isfahan University of Technology,Department of Chemistry
来源：
Transition Metal Chemistry | 2014年 / 39卷
关键词：
Schiff Base; Dynamic Light Scattering; Fe3O4 Nanoparticles; Isatin; Phenylacetylene;
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摘要：
A series of magnetically separable catalysts consisting of Schiff base complexes of metal ions (Zn, Mn, Cd, Co, Cu, Ni, Fe and Pd) supported on superparamagnetic Fe3O4@SiO2 nanoparticles has been prepared. The structural features of the catalysts were characterized by XRD, FTIR, TEM, FE-SEM, DLS, VSM, UV–Vis, TGA, AFM and N2 adsorption–desorption. Some of the Fe3O4@SiO2/Schiff base complexes were found to be efficient catalysts for the Cu-free and the phosphine free Sonogashira–Hagihara coupling reaction of aryl halides and phenylacetylene. The catalysts are superparamagnetic, and thus could be easily separated by the utilization of an external magnetic field, and could be reused for six cycles without significant loss of activity.
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页码：797 / 809
页数：12
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