Rhodium Complexes Non-Covalently Bound to Cyclodextrins: Novel Water-Soluble Supramolecular Catalysts for the Biphasic Hydroformylation of Higher Olefins
| Autor: | Benoît Sueur, André Mortreux, Mathieu Sauthier, Hervé Bricout, Sébastien Tilloy, Yves Castanet, Loïc Leclercq, Eric Monflier |
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| Přispěvatelé: | Laboratoire de Physico-Chimie des Interfaces et Applications, Centre National de la Recherche Scientifique (CNRS), Unité de Catalyse et Chimie du Solide - UMR 8181 (UCCS), Centrale Lille Institut (CLIL)-Université d'Artois (UA)-Centrale Lille-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Lille, Université d'Artois (UA)-Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2005 |
| Předmět: |
phosphanes
Supramolecular chemistry chemistry.chemical_element 010402 general chemistry 01 natural sciences Aldehyde supramolecular chemistry Catalysis Rhodium chemistry.chemical_compound Polymer chemistry Organic chemistry Chemoselectivity Triphenylphosphine hydroformylation chemistry.chemical_classification cyclodextrins 010405 organic chemistry Organic Chemistry Cationic polymerization [CHIM.CATA]Chemical Sciences/Catalysis General Chemistry 0104 chemical sciences chemistry rhodium Hydroformylation |
| Zdroj: | Chemistry-A European Journal Chemistry-A European Journal, Wiley-VCH Verlag, 2005, 11, pp.6228-6236. ⟨10.1002/chem.200500337⟩ Chemistry-A European Journal, 2005, 11, pp.6228-6236. ⟨10.1002/chem.200500337⟩ |
| ISSN: | 1521-3765 0947-6539 |
| Popis: | A new class of cationic alpha-cyclodextrins bearing 2-hydroxy-3-trimethylammoniopropyl groups has been synthesised. We investigated their efficiency as mass-transfer promoters in a biphasic hydroformylation reaction catalysed by a rhodium trisulfonated triphenylphosphine system. These cationic alpha-cyclodextrins greatly increased the reaction rate, the chemoselectivity, and, surprisingly, the linear-to-branched aldehyde ratio. We attributed this unexpected enhancement of the linear-to-branched aldehyde ratio to the in situ formation of new catalytic supramolecular species obtained by ion-exchange between the catalyst ligand and the cationic alpha-cyclodextrins. |
| Databáze: | OpenAIRE |
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