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AssigneeStudiengesellschaft Kohle mbH
InventorsWalter Leitner, Daniel Koch
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The present invention relates to processes for the preparation of oxo products by the hydroformylation of substrates having C═C double bonds using unmodified rhodium catalysts in a reaction mixture essentially consisting of the substrates, the catalyst and carbon dioxide in a supercritical state (scCO2). In particular, the invention relates to such processes for the preparation of products which contain substantial proportions of branched i-oxo products. Further, the invention relates to such processes for the hydroformylation of substrates which do not correspond to the general formula CnH2n. The invention further relates to such processes in which the separation of product and catalyst is effected using the special solvent properties of scCO2.
A process for preparing a product comprising at least a substantial proportion of one or more branched i-oxo products by hydroformylating one or more substrates having at least one C═C double bond and not corresponding to the general formula CnH2n, said process comprising hydroformylating the one or more substrates when present in a reaction mixture consisting essentially of the one or more substrates, at least one unmodified rhodium catalyst and carbon dioxide in a supercritical state (scCO2) to produce said product comprising said at least a substantial proportion of said one or more branched i-oxo products.
Dependencies are inferred from the claim text.