Coupling of the triphenylphosphine moiety to poly-acrylic acid and poly-ethyleneimine respectively afford the macromolecular ligands PAA-PNH and PEI-PNH. Reaction of the ligands with Rh(CO)2(acac) give water-soluble complexes that are active as catalysts in the hydroformylation ofdifferent olefins. SAP-catalysts based on PAA-PNH are efficient in gas phase hydroformylation of propene and in liquid phase hydroformylation of 1-octene. Hydroformylations under biphasic conditions are very slow but addition of sodiumdodecyl suphate (SDS) or methanol increases the rate significantly. Catalysts using PEI-PNH as ligands show lower stability and activity in both SAPC and biphasic applications.
|Journal||Journal of Molecular Catalysis|
|Publication status||Published - 1999|