New linker systems for superior immobilized catalysts
The rigid linkers E(p-C6H4PPh2)4 (E = Si, Sn) have been synthesized from the corresponding precursors E(p-C6H4Br)4 and immobilized by forming one (E = Si) or three (E = Sn) phosphonium groups that are attached to the silica support by electrostatic interactions. The remaining unquaternized phosphine...
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| Hauptverfasser: | , , , , , |
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| Dokumenttyp: | Article (Journal) Editorial |
| Sprache: | Englisch |
| Veröffentlicht: |
18 Aug 2010
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| In: |
New journal of chemistry
Year: 2010, Jahrgang: 34, Heft: 12, Pages: 2729-2731 |
| ISSN: | 1369-9261 |
| DOI: | 10.1039/C0NJ00482K |
| Online-Zugang: | Verlag, Volltext: https://doi.org/10.1039/C0NJ00482K Verlag, Volltext: https://pubs.rsc.org/en/content/articlelanding/2010/nj/c0nj00482k 
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| Verfasserangaben: | Björn Beele, Johannes Guenther, Melanie Perera, Michaela Stach, Thomas Oeser and Janet Blümel |
| Zusammenfassung: | The rigid linkers E(p-C6H4PPh2)4 (E = Si, Sn) have been synthesized from the corresponding precursors E(p-C6H4Br)4 and immobilized by forming one (E = Si) or three (E = Sn) phosphonium groups that are attached to the silica support by electrostatic interactions. The remaining unquaternized phosphines are coordinated to Wilkinson-type Rh complexes. The catalyst immobilized by the rigid scaffold with three surface-bound phosphonium groups (E = Sn) displays superior catalytic activity and lifetime with respect to the hydrogenation of dodecene. This catalyst can be recycled 30 times in a batchwise manner under standardized conditions. |
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| Beschreibung: | Gesehen am 04.01.2023 |
| Beschreibung: | Online Resource |
| ISSN: | 1369-9261 |
| DOI: | 10.1039/C0NJ00482K |