Rhodium-tris(3,5-bis(trifluoromethyl)phenyl)phosphine catalyzed hydroformylation of dienes to dialdehydes in supercritical carbon dioxide with high activity |
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Authors: | Shin-ichiro Fujita Bhalchandra M. Bhanage Masahiko Arai |
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Affiliation: | a Division of Materials Science and Engineering, Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan b CREST, JST, Japan |
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Abstract: | Rhodium-catalyzed hydroformylation of 1,5-hexadiene and 1,7-octadiene to corresponding dialdehydes was investigated in compressed CO2 and in toluene using different fluorinated phosphine compounds as ligands. A rhodium complex using tris(3,5-bis(trifluoromethyl)phenyl)phosphine is highly effective in compressed CO2 for double hydroformylation of 1,5-hexadiene, whose TOF value is much larger than those reported so far. It has been shown that this ligand is effective also for the hydroformylation of 1,7-octadiene and scCO2 is a better solvent than a conventional organic solvent of toluene for the title reaction. |
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Keywords: | Hydroformylation Rhodium Dialdehyde Fluorinated phosphine Supercritical carbon dioxide |
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