The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: Tris(3,5-bis(trifluoromethyl)phenyl)phosphine, is researched, Molecular C24H9F18P, CAS is 175136-62-6, about Hydroformylation of Higher Olefins in Supercritical Carbon Dioxide with HRh(CO)[P(3,5-(CF3)2-C6H3)3]3, the main research direction is hydroformylation octene supercritical carbon dioxide rhodium phosphine complex catalyst.COA of Formula: C24H9F18P.
A fluorinated analog of the hydroformylation catalyst, HRh(CO)(PPh3)3 was synthesized for hydroformylation of olefins in supercritical carbon dioxide (scCO2). The catalyst, HRh(CO)[P(3,5-(CF3)2C6H3)3]3, was found to be an extremely active catalyst in scCO2 for hydroformylation of 1-octene with maximum TOFs around 15 000 h-1 at a relatively mild temperature of 65 °C. The very high activity results from the low basicity of the ligand. The kinetics of hydroformylation of 1-octene in scCO2 with the catalyst was investigated. The results were successfully interpreted using the generally accepted catalytic cycle in the literature based on a dissociative mechanism. The reaction is nearly first order with respect to H2, which suggests that oxidative addition of hydrogen to an acyl intermediate is the rate-determining step in scCO2 at the low phosphine concentrations employed. The commonly observed decrease in reaction rate with increasing phosphine concentration with HRh(CO)(PPh3)3 in conventional solvents was not observed due to the low basicity of the ligand.
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Reference:
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