VERFAHREN ZUR HYDROFORMYLIERUNG VON ETHYLENISCH UNGESÄTTIGTEN VERBINDUNGEN MITTELS EINER ZWEIZÄHNIGEN DIPHOSPHIN-ZUSAMMENSETZUNG MIT EINER VERBRÜCKENDEN GRUPPE ENTHALTEND SP2-HYBRIDISIERTE UND AN DIE PHOSPHORATOME GEBUNDENE KOHLENSTOFFATOME

摘要

Process for the hydroformylation of an optionally substituted ethylenically unsaturated compound by reaction thereof with carbon monoxide and hydrogen in the presence of a specific catalyst system which includes a source of Group VIII metal cations; a diphosphine ligand having the general formula (I): X¹-R-X² (I) wherein X¹ and X² each independently represent an optionally substituted cyclic group with at least 5 ring atoms, of which one is a phosphorus atom, and R represents a bivalent optionally substituted bridging group which is connected to each phosphorus atom by a sp² hybridized carbon atom; an acid having a pK_a<3; and a source of halide anions.