Patent ID: 6664427
Filing Date: 2003-12-16
Classification: C07C,C07F

Abstract:
A hydroformylation process for preparing an organic aldehyde compound from an unsaturated organic compound, said method comprising: contacting an unsaturated organic compound with carbon monoxide, hydrogen gas, and a catalyst system, said catalyst system comprising a Group VIII metal, and at least one or a combination of at least two bidentate organic ligands having two trivalent phosphorus atoms, said ligand selected from the group consisting of structure I, II, III, IV, V, and VI: where X1-X4 are C1-C6 alkyl, alkoxy, aryloxy, NR6R7, Cl, F, or CF3; R1 is independently selected from the group consisting of substituted aryl, phenyl, or fused aromatic ring systems; R2 and R3 are independently selected from the group consisting of hydrogen, alkyl, aryl, triarylsilyl, trialkylsilyl, carboalkoxy, carboaryloxy, aryloxy, alkoxy, alkylcarbonyl, arylcarbonyl, or nitrile; R4 and R5 are independently selected from the group consisting of hydrogen, alkyl, alkoxy; R6 and R7 are independently chosen from alkyl and aryl.