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Hydroformylation of alkenes catalyzed by new dinuclear aryloxide- and carboxylate-bridged rhodium complexes |
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| Affiliation: | a National Hellenic Research Foundation, Institute of Organic and Pharmaceutical Chemistry, Vas. Constantinou 48, 11635 Athens, Greece b Inorganic Chemistry Laboratory, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15771 Athens, Greece c Laboratory of Specialty Polymers, Department of Physical and Macromolecular Chemistry, Charles University, Albertov 2030, CZ-128 40, Prague 2, Czech Republic |
| Abstract: | The new dinuclear aryloxide- and carboxylate-bridged rhodium complexes bis[μ-(2-methylphenolato)]bis[(η2:η2-cycloocta-1,5-diene)rhodium], di(μ-docosanoato)bis[(η2:η2-norborna-2,5-diene)rhodium] and bis[(μ-(adamant-1-yl)carboxylato]bis[(η2:η2-norborna-2,5-diene)rhodium] have been prepared. The complexes were tested as catalysts in the hydroformylation of styrene with a total pressure of CO/H2 (1:1) of 1000 psi, at 25 and 60 °C, and displayed a regioselectivity towards the branched aldehyde of up to 97%. The same complexes as catalysts in the hydroformylation of 1-octene displayed a regioselectivity for the linear aldehyde of up to 55%. |
| Keywords: | Rhodium complex Dinuclear complex Aryloxo complex Carboxylato complex Hydroformylation Homogeneous catalysis |
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