The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 17, 1987
Filed:
Jan. 25, 1985
Kurt Dahmen, Monchen-Gladbach, DE;
Erich Kuster, Krefeld, DE;
Richard Mertens, Krefeld, DE;
Helmut Brehm, Krefeld, DE;
Chemische Fabrik Stockhausen GmbH, Krefeld, DE;
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.