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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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Bibliographic Details
Main Authors: Beele, Björn B. (Author) , Guenther, Johannes (Author) , Perera, Melanie (Author) , Stach, Michaela (Author) , Oeser, Thomas (Author) , Blümel, Janet (Author)
Format: Article (Journal) Editorial
Language:English
Published: 18 Aug 2010
In: New journal of chemistry
Year: 2010, Volume: 34, Issue: 12, Pages: 2729-2731
ISSN:1369-9261
DOI:10.1039/C0NJ00482K
Online Access:Verlag, Volltext: https://doi.org/10.1039/C0NJ00482K
Verlag, Volltext: https://pubs.rsc.org/en/content/articlelanding/2010/nj/c0nj00482k
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Author Notes:Björn Beele, Johannes Guenther, Melanie Perera, Michaela Stach, Thomas Oeser and Janet Blümel
Description
Summary: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.
Item Description:Gesehen am 04.01.2023
Physical Description:Online Resource
ISSN:1369-9261
DOI:10.1039/C0NJ00482K

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