Process for the production of N-substituted .alpha.,.beta.-unsaturated carboxylic acid amides

US4644083A · kind A · utility

Assignee

• Chemische Fabrik Stockhausen GmbH · DE

Inventors

• Kurt Dahmen · Rheydt, DE
• Erich Kuster · Krefeld, DE
• Richard Mertens · Krefeld, DE
• Helmut Brehm · Krefeld, DE

Key dates

• Filing date: Jan 25, 1985
• Grant date: Feb 17, 1987
• Expiry date: Jan 25, 2005

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C233/01
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for the production of N-substituted .alpha.,.beta.-unsaturated carboxylic acid amides, which proceeds from the .alpha.,.beta.-unsaturated carboxylic acid amide that is unsubstituted at the amido nitrogen, which forms the Michael adduct initially by conversion with a polyvalent alcohol having a boiling point of >/=150.degree. C., converts this with a primary or secondary amine with elimination of ammonia to form N-substituted carboxylic acid amide with a protected double bond, the polyvalent alcohol being subsequently eliminated from this product at high temperatures, with formation of the N-substituted .alpha.,.beta.-unsaturated carboxylic acid amide.