Preparation of omega-formylalkanecarboxylic esters

US4910328A · kind A · utility

Assignee

• BASF SE

Inventors

• Werner Bertleff · Viernheim, DE
• Robert Maerkl
• Michael Roeper · Monsheim, DE

Key dates

• Filing date: Jun 15, 1988
• Grant date: Mar 20, 1990
• Expiry date: Jun 15, 2008

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C67/347
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

.omega.-Formylalkanecarboxylic esters are prepared by hydroformylation of an alkenecarboxylic ester with carbon monoxide and hydrogen at elevated tempertures and under superatmospheric pressure in the presence of a cobalt carbonyl complex by a process in which an .alpha.,.beta.-unsaturated alkenecarboxylic ester is hydroformylated in the presence of from 0.01 to 1 mol %, calculated as cobalt, of a cobalt carbonyl complex, while maintaining a conversion of from 10 to 70% of .alpha.,.beta.-unsaturated alkenecarboxylic esters.