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Carbon‐Supported Copper Nanomaterials: Recyclable Catalysts for Huisgen [3+2] Cycloaddition Reactions |
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| Authors: | Diana Döhler Dr Franz Jirsa Dr Annette Meister Prof?Dr Liberata Guadagno Eik Koslowski Prof?Dr Michael Bron Prof?Dr Wolfgang H Binder |
| Institution: | 1. Institute of Chemistry, Faculty of Natural Science II (Chemistry, Physics, and Mathematics), Martin Luther University Halle‐Wittenberg von Danckelmann‐Platz 4, 06120 Halle (Germany);2. Institute of Inorganic Chemistry, University of Vienna, Althanstrasse 14, 1090 Vienna (Austria);3. Mitteldeutsches Zentrum für Struktur und Dynamik der Proteine, Biocenter, Martin Luther University Halle‐Wittenberg, Weinbergweg 22, 06120 Halle (Germany);4. Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, SA (Italy) |
| Abstract: | Highly disperse copper nanoparticles immobilized on carbon nanomaterials (CNMs; graphene/carbon nanotubes) were prepared and used as a recyclable and reusable catalyst to achieve CuI‐catalyzed 3+2] cycloaddition click chemistry. Carbon nanomaterials with immobilized N‐heterocyclic carbene (NHC)‐Cu complexes prepared from an imidazolium‐based carbene and CuI show excellent stability including high efficiency at low catalyst loading. The catalytic performance evaluated in solution and in bulk shows that both types of Cu‐CNMs can function as an effective recyclable catalysts (more than 10 cycles) for click reactions without decomposition and the use of external additives. |
| Keywords: | carbon nanotubes click chemistry copper nanoparticles graphene heterogeneous catalysis |