ZIF-8-basedvs.ZIF-8-derived Au and Pd nanoparticles as efficient catalysts for the Ullmann homocoupling reaction
The Ullmann coupling reaction of aromatic halides is the most challenging C-C coupling reaction. Both MOF-based and MOF-derived types of catalysts have recently provided useful nanocatalysts for a variety of reactions, but they have rarely been compared. Herein, the Ullmann-type aryl iodide homocoup...
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| Veröffentlicht in: | Inorganic chemistry frontiers 2020-10, Vol.7 (20), p.3945-3952 |
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| container_title | Inorganic chemistry frontiers |
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| creator | Wang, W Chen, S Cal, Eduardo Guisasola Moro, M Moya, Sergio Coy, Emerson Wang, Changlong Hamon, J.-R. Astruc, Didier |
| description | The Ullmann coupling reaction of aromatic halides is the most challenging C-C coupling reaction. Both MOF-based and MOF-derived types of catalysts have recently provided useful nanocatalysts for a variety of reactions, but they have rarely been compared. Herein, the Ullmann-type aryl iodide homocoupling is efficiently catalyzed by gold and palladium nanoparticles (NPs) loaded on ZIF-8 before (ZIF-8-based nanocatalyst: M@ZIF-8) and after calcination (ZIF-8-derived catalyst: M@CN). The nanocatalysts M@ZIF-8 (M = Pd, Au) are found to be more efficient than the catalysts M@CN. Pd@ZIF-8 exhibits better performances than those of Au@ZIF-8 for a series of aryl iodides, but in the case of 4-nitro-iodobenzene, deshydroiodination was observed besides the coupling product. Mechanisms are proposed and discussed for both Au(0) and Pd(0) nanocatalysts. |
| doi_str_mv | 10.1039/d0qi00831a |
| format | Article |
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Both MOF-based and MOF-derived types of catalysts have recently provided useful nanocatalysts for a variety of reactions, but they have rarely been compared. Herein, the Ullmann-type aryl iodide homocoupling is efficiently catalyzed by gold and palladium nanoparticles (NPs) loaded on ZIF-8 before (ZIF-8-based nanocatalyst: M@ZIF-8) and after calcination (ZIF-8-derived catalyst: M@CN). The nanocatalysts M@ZIF-8 (M = Pd, Au) are found to be more efficient than the catalysts M@CN. Pd@ZIF-8 exhibits better performances than those of Au@ZIF-8 for a series of aryl iodides, but in the case of 4-nitro-iodobenzene, deshydroiodination was observed besides the coupling product. 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Both MOF-based and MOF-derived types of catalysts have recently provided useful nanocatalysts for a variety of reactions, but they have rarely been compared. Herein, the Ullmann-type aryl iodide homocoupling is efficiently catalyzed by gold and palladium nanoparticles (NPs) loaded on ZIF-8 before (ZIF-8-based nanocatalyst: M@ZIF-8) and after calcination (ZIF-8-derived catalyst: M@CN). The nanocatalysts M@ZIF-8 (M = Pd, Au) are found to be more efficient than the catalysts M@CN. Pd@ZIF-8 exhibits better performances than those of Au@ZIF-8 for a series of aryl iodides, but in the case of 4-nitro-iodobenzene, deshydroiodination was observed besides the coupling product. 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| source | Royal Society Of Chemistry Journals 2008- |
| subjects | Chemical Sciences Inorganic chemistry |
| title | ZIF-8-basedvs.ZIF-8-derived Au and Pd nanoparticles as efficient catalysts for the Ullmann homocoupling reaction |
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