Wittmann, Sebastian and Majoral, Jean-Pierre and Grass, Robert N. and Stark, Wendelin J. and Reiser, Oliver (2012) Carbon coated magnetic nanoparticles as supports in microwave-assisted palladium catalyzed Suzuki-Miyaura couplings. GREEN PROCESSING AND SYNTHESIS, 1 (3). pp. 275-279. ISSN 2191-9542, 2191-9550
Full text not available from this repository. (Request a copy)Abstract
A palladium bis-N-heterocyclic carbene complex was immobilized on polystyrene modified, magnetic carbon coated iron nanoparticles and evaluated in Suzuki-Miyaura cross-coupling reactions under conventional and microwave heating. Under the latter conditions, both aryl bromides and aryl chlorides could be employed as substrates at low loading of catalyst (0.2 mol %), which could be readily recovered by an external magnet and reused in at least four cycles. As a possible deactivation pathway of the catalyst, the formation of palladium nanoparticles in the course of the reaction that became encapsulated in the polystyrene matrix of the support is suggested.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ; magnetic nanoparticles; microwave irradiation; palladium-N-heterocyclic carbene catalysts; recyclable catalyst; Suzuki-Miyaura coupling |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Organische Chemie > Lehrstuhl Prof. Dr. Oliver Reiser |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 13 May 2020 07:09 |
| Last Modified: | 13 May 2020 07:09 |
| URI: | https://pred.uni-regensburg.de/id/eprint/18695 |
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