摘要
A novel thermoregulated phosphine ligand PhP(CHCHO)CH(n=22) was synthesized and used for the Rh-catalyzed hydroformylation of mixed Colefins in aqueous/organic biphasic system.Under the optimized conditions,pressure =5 MPa (H:CO=1:1),phosphine/Rh =13(molar ratio),reaction time =6 h and temperature =130℃,the conversion of Colefins and the yield of aldehyde are 99%and 94%,respectively.The catalyst retained in aqueous phase can be easily separated from the product-containing organic phase by simple phase separation and the catalytic activity remains almost constant after four consecutive cycles.
A novel thermoregulated phosphine ligand Ph<sub>2</sub>P（CH<sub>2</sub>CH<sub>2</sub>O）<sub>n</sub>CH<sub>3</sub>（n=22） was synthesized and used for the Rh-catalyzed hydroformylation of mixed C<sub>11-12</sub> olefins in aqueous/organic biphasic system.Under the optimized conditions,pressure =5 MPa （H<sub>2</sub>:CO=1:1）,phosphine/Rh =13（molar ratio）,reaction time =6 h and temperature =130℃,the conversion of C<sub>11-12</sub> olefins and the yield of aldehyde are 99%and 94%,respectively.The catalyst retained in aqueous phase can be easily separated from the product-containing organic phase by simple phase separation and the catalytic activity remains almost constant after four consecutive cycles.
基金
the financial support from the Program for New Century Excellent Talents in University (No.NCET-07-0138)
the Science and Technology Project in Universities from the Education Department of Liaoning Province(No.2008T233).
