Silica–acetylacetone‐supported palladium nanoparticles as an efficient and reusable catalyst in the Heck–Mizoroki C–C cross‐coupling reaction |
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| Authors: | Abdolreza Hajipour Zohre Shirdashtzade Ghobad Azizi |
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| Affiliation: | 1. Pharmaceutical Research Laboratory, College of Chemistry, Isfahan University of Technology, Isfahan, Islamic Republic of Iran;2. Department of Neuroscience, University of Wisconsin Medical School, Madison, WI, USA |
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| Abstract: | The preparation of palladium nanoparticles supported on acetylacetone‐modified silica gel and their catalytic application for Heck olefination of aryl halides were investigated. The catalyst was characterized using X‐ray diffraction, X‐ray photoelectron spectroscopy, and transmission and scanning electron microscopies. The supported palladium nanoparticles are demonstrated to be a highly active and reusable catalyst for the Heck reaction. Several reaction parameters, including type and amount of solvent and base, were evaluated. The heterogeneity of the catalytic system was investigated with results indicating that there is a slight palladium leaching into the reaction solution under the applied reaction conditions. Despite this metal leaching, the catalyst can be reused nine times without significant loss of catalytic activity. Copyright © 2015 John Wiley & Sons, Ltd. |
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| Keywords: | supported palladium nanoparticles semi‐heterogeneous catalyst Heck coupling C– C cross‐coupling reaction C– C bond formation arylation of olefins Heck olefination immobilized metallic nanoparticles |
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