Schaetz, Alexander and Grass, Robert N. and Stark, Wendelin J. and Reiser, Oliver (2008) TEMPO Supported on Magnetic C/Co-Nanoparticles: A Highly Active and Recyclable Organocatalyst. CHEMISTRY-A EUROPEAN JOURNAL, 14 (27). pp. 8262-8266. ISSN 0947-6539,
Full text not available from this repository. (Request a copy)Abstract
TEMPO was grafted on graphene-coated nanobeads with a magnetic cobalt core by using a general applicable "click"-chemistry protocol. The new heterogeneous CoNP-TEMPO emerged as a highly active catalyst for the chemoselective oxidation of primary and secondary alcohols using bleach as terminal oxidant. The outstanding stability of the C/Co nanoparticles enables the nanopowder to tolerate several TEMPO-mediated iterative oxidation reactions without any significant loss in catalyst activity. Furthermore, the excellent magnetic properties enable the rapid separation and quantitative recycling of CoNP-TEMPO out of the reaction mixture by simple magnetic decantation. The recovered nanoparticles can be subsequently reused without any further purification.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | CROSS-COUPLING REACTIONS; SELECTIVE OXIDATION; 2-PHASE CONDITIONS; OXOAMMONIUM SALTS; TERMINAL ALKYNES; SOLID-PHASE; ALCOHOLS; CATALYSTS; GEL; KETONES; cobalt; heterogeneous catalysis; magnetic nanobeads; nanoparticles; supported catalysts |
| 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 Nov 2020 09:31 |
| Last Modified: | 13 Nov 2020 09:31 |
| URI: | https://pred.uni-regensburg.de/id/eprint/31584 |
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