DABCO tribromide immobilized on magnetic nanoparticle as a recyclable catalyst for the chemoselective oxidation of sulfide using H₂O₂ under metal- and solvent-free conditions

详细信息    查看全文

• 作者：Amin Rostami ; Yahya Navasi ; Darush Moradi ; Arash Ghorbani-Choghamarani
• 关键词：Magnetic nanoparticles ; 1 ; 4-Diazabicyclo[2.2.2] octane tribromide ; Nanocatalyst ; Hydrogen peroxide ; Sulfides ; Sulfoxides
• 刊名：Catalysis Communications
• 出版年：5 January, 2014
• 年：2014
• 卷：43
• 期：Complete
• 页码：16-20
• 全文大小：1716 K

文摘

Magnetic nanoparticle-supported 1,4-diazabicyclo[2.2.2] octane tribromide (MNPs-DABCO tribromide) as a bromine source was readily prepared and characterized by X-ray diffraction (XRD), thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FT-IR), energy dispersive X-ray spectroscopy (EDX), scanning electron microscopy (SEM), and vibrating sample magnetometry (VSM) techniques. The catalytic activity of MNPs-DABCO tribromide was investigated in the chemoselective oxidation of sulfides to sulfoxides using 30% H₂O₂ as an oxidant at room temperature under solvent-free conditions. The heterogeneous catalyst could be recovered easily and reused 15 times without significant loss of its catalytic activity.