PHOSPHONITE LIGANDS, CATALYST COMPOSITIONS AND HYDROFORMYLATION PROCESS UTILIZING SAME

摘要

Phosphonite ligands, catalyst compositions containing such ligands and a hydroformylation process using such catalyst compositions involving a bidentate phosphonite ligand having the structure represented by the followingwherein the Ar groups are either the same or different unbridged organic aromatic groups such as substituted or unsubstituted phenyl, substituted or unsubstituted naphthyl, mixtures thereof or the like are disclosed. The ligands in combination with a Group VIII metal or Group VIII metal compound are particularly useful in a hydroformylation process for reacting an ethylenically unsaturated compound to produce linear alkenals at high selectivity.