Process for the hydroformylation of 1,3-butadiene

US5434312A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Bernhard Fell · Aachen, DE
• Peter Hermanns · Aachen, DE

Key dates

• Filing date: Sep 2, 1994
• Grant date: Jul 18, 1995
• Expiry date: Sep 2, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C45/50
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

1,3-Butadiene is hydroformylated at 60.degree. to 150.degree. C. and 1 to 20 MPa in the presence of an aqueous solution which contains, as catalyst, at least one water-soluble rhodium compound and at least one water-soluble organic phosphine. A pH of 8 to 11 is maintained in the aqueous catalyst solution to increase the selectivity of the reaction with respect to the formation of n-five carbon aldehydes and their secondary products. The latter, in particular, can be hydrogenated to 2-propylheptanol, useful as the alcohol component of phthalic ester plasticizers.