Using thermoregulated PEG biphase system to effect the hydroformylation of p-isobutylstyrene catalyzed by Rh/OPGPP complex

Thermoregulated poly(ethylene glycol) (PEG) biphase system, which is composed of PEG 4000 and the mixture of toluene and heptane, was developed and used in the hydroformylation of p-isobutylstyrene (IBS) catalyzed by Rh/OPGPP complex. Under the conditions of P = 5.0 MPa (H2:CO = 1:1), P/Rh = 8 (molar ratio), reaction time = 5 h and temperature = 120 °C the conversion of IBS was 99% and the yield of aldehyde was 96%. The catalyst could be easily separated from the product by phase separation and reused for seven times without evident loss of activity.

Thermoregulated PEG biphase system, which is composed of PEG 4000 and mixture of toluene and heptane, was developed and used in the hydroformylation of p-isobutylstyrene (IBS) catalyzed by Rh/OPGPP complex. Under the optimum conditions, the conversion of IBS and yield of aldehyde are 99% and 96%, respectively. In addition, the catalyst could be easily separated from products and efficiently recovered. Figure optionsDownload as PowerPoint slide