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Confining Phosphanes Derived from Cyclodextrins for Efficient Regio‐ and Enantioselective Hydroformylation |
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| Authors: | Matthieu Jouffroy Dr. Rafael Gramage‐Doria Prof. Dominique Armspach Dr. David Sémeril Dr. Werner Oberhauser Dr. Dominique Matt Dr. Loic Toupet |
| Affiliation: | 1. Laboratoire de Chimie Inorganique Moléculaire et Catalyse, Institut de Chimie UMR 7177 CNRS, Université de Strasbourg, 1 rue Blaise Pascal, 67008 Strasbourg Cedex (France);2. Istituto di Chimica dei Composti OrganoMetallici CNR via Madonna del Piano, 10, 50019 Sesto Fiorentino, Firenze (Italy);3. Groupe Matière Condensée et Matériaux UMR 6626 CNRS, Université de Rennes 1, 35042 Rennes Cedex (France) |
| Abstract: | Two confining phosphane ligands derived from either α‐ or β‐cyclodextrin produce singly PIII‐ligated metal complexes with unusual coordination spheres. High‐pressure NMR studies have revealed that rhodium hydride complexes of the same type are also formed under hydroformylation conditions. This unique feature strongly favors the formation of the branched aldehyde at the expense of the linear one with high enantioselectivity in the rhodium‐catalyzed hydroformylation of styrene. |
| Keywords: | cyclodextrins homogeneous catalysis hydroformylation phosphanes rhodium |