Process for the preparation of .beta.- aminoacrylic acid esters

US5446192A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Helmut Kraus · Cologne, DE
• Heinz U. Blank · Odenthal, DE
• Gerhard Marzolph · Cologne, DE

Key dates

• Filing date: Mar 3, 1993
• Grant date: Aug 29, 1995
• Expiry date: Mar 3, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C227/10
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

.beta.-Aminoacrylic acid esters can be prepared by reacting acetic acid esters of the formula EQU H.sub.2 CR.sub.1 --COOR.sup.2 (II) with aminal esters of the formula ##STR1## at 0.5-10 bar and 50.degree.-170.degree. C. in an aprotic polar solvent. The radicals R.sup.1 to R.sup.7 are as defined in the description.