Cardozo Perez, Andrés Fernando and Manoury, Eric and Julcour-Lebigue, Carine
and Blanco, Jean-François
and Delmas, Henri
and Gayet, Florence and Poli, Rinaldo
Preparation of Polymer Supported Phosphine Ligands by Metal Catalyzed Living Radical Copolymerization and Their Application to Hydroformylation Catalysis.
(2013)
CHEMCATCHEM, 5 (5). 1161-1169. ISSN 1867-3899
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(Document in English)
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Official URL: http://dx.doi.org/10.1002/cctc.201200446
Abstract
A series of well-defined polystyrene-supported tertiary phosphine ligands were prepared by copper-catalyzed atom transfer radical polymerization (ATRP), involving direct copolymerization of styrene and 4-diphenylphosphinostyrene (or 4-styryldiphenylphosphine, SDPP). Copolymerization of the two monomers at different molar ratios showed a decreasing level of control as the SDPP molar fraction (fSDPP) increased. A satisfactory level of control was achieved for fSDPP≤0.25 such that there was a constant concentration of growing “living chains”, and linear Mn growth with conversion and low dispersity. Copper-free polymers with different chain lengths were prepared and tested as polymeric ligands in the rhodium-catalyzed hydroformylation of 1-octene. The polymeric ligands yielded higher linear/branched selectivity and lower activity relative to PPh3 at the same P/Rh ratio. The selectivity increased slightly as a function of the polymer chain length.
Item Type: | Article |
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Audience (journal): | International peer-reviewed journal |
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Institution: | French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE) Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE) Other partners > Institut universitaire de France - IUF (FRANCE) Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE) |
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Funders: | ANR (Agence Nationale de la Recherche, Grant No. ANR-11-BS07-025-01) - PRES Toulouse - Institut Universitaire de France |
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Deposited On: | 09 Oct 2013 08:47 |
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