Process for the preparation of aldehydes employing catalyst compositions based on rhodium complexes containing diphosphine ligands

摘要

A process for preparing aldehydes by hydroformylating olefinically unsaturated compounds in the presence of a water-insoluble catalyst composition comprising rhodium complexes containing diphosphine ligands, wherein the diphosphine ligands present are compounds of the formula (I) wherein R1 is selected from the group consisting of carboxylate (COO-), sulfonate (SO3-), phosphonate (PO32-) and 2-anmino ethtanebisphosphonate, R2 is selected from the group consisting of a straight-chain alkylene of 1 to 8 carbon atoms, an oxygen-containing alkylene of 2 to 6 carbon atoms, cycloalkylene of 3 to 10 carbon atoms and a member of the Formulae II, III, IV or v