Abstract
A novel Pd(II) organometallic catalyst bonded to magnetic SiO2@Fe3O4 support was synthesized by coordinating Pd(II) with the PPh2-ligand originally grafted onto the silica layer covering the Fe3O4 microspheres. Owing to the high dispersion of Pd(II) active sites, the as-prepared Pd-PPh2-SiO2@Fe3O4 catalyst exhibited comparable activities and selectivities with the PdCl2(PPh3)2 homogeneous catalyst in various water-medium Suzuki and Sonogashira reactions. The catalyst could be easily recycled by an external magnet and used repetitively for at least 8 times without significant loss of its catalytic activity.
Keywords: Immobilized Pd(II) organometallic catalyst, Fe3O4 microspheres coated with silica layer, Water-medium clean organic reactions, Magnetic separation of catalyst.
Current Organic Chemistry
Title:Water-Medium Organic Reactions on an Active and Easily Recycled Pd(II) Organometallic Catalyst Bonded to Magnetic SiO2@Fe3O4 Support
Volume: 17 Issue: 10
Author(s): Mingzhen Chen, Fang Zhang and HeXing Li
Affiliation:
Keywords: Immobilized Pd(II) organometallic catalyst, Fe3O4 microspheres coated with silica layer, Water-medium clean organic reactions, Magnetic separation of catalyst.
Abstract: A novel Pd(II) organometallic catalyst bonded to magnetic SiO2@Fe3O4 support was synthesized by coordinating Pd(II) with the PPh2-ligand originally grafted onto the silica layer covering the Fe3O4 microspheres. Owing to the high dispersion of Pd(II) active sites, the as-prepared Pd-PPh2-SiO2@Fe3O4 catalyst exhibited comparable activities and selectivities with the PdCl2(PPh3)2 homogeneous catalyst in various water-medium Suzuki and Sonogashira reactions. The catalyst could be easily recycled by an external magnet and used repetitively for at least 8 times without significant loss of its catalytic activity.
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Cite this article as:
Chen Mingzhen, Zhang Fang and Li HeXing, Water-Medium Organic Reactions on an Active and Easily Recycled Pd(II) Organometallic Catalyst Bonded to Magnetic SiO2@Fe3O4 Support, Current Organic Chemistry 2013; 17 (10) . https://dx.doi.org/10.2174/1385272811317100007
DOI https://dx.doi.org/10.2174/1385272811317100007 |
Print ISSN 1385-2728 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-5348 |
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