Process for the preparation of carboxylic acids and N-tert.-alkylamines

US4496736A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Gerhard Bonse · Neunburg vorm Wald, DE
• Gerhard Marzolph · Cologne, DE
• Heinz U. Blank · Odenthal, DE

Key dates

• Filing date: Jun 3, 1982
• Grant date: Jan 29, 1985
• Expiry date: Jun 3, 2002

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D213/79
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Carboxylic acids and N-t.-alkylamines can be prepared simultaneously by the alkaline pressure hydrolysis of N-t.-alkyl carboxylic acid amides. A 5 to 50% strength by weight aqueous solution of an alkali metal hydroxide is employed for this purpose in an amount of 1.0 to 1.3 mols per mol of the amide. The process is carried out at 200.degree. to 350.degree. C.