N-substituted .beta.-aminocrotonic acid esters

US4027037A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Peter Siegle · Cologne, DE
• Klaus Sasse · Bensberg, DE
• Peter Rossler · Ilsfeld, DE

Key dates

• Filing date: Mar 12, 1975
• Grant date: May 31, 1977
• Expiry date: Mar 12, 1995

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A01N37/44
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

N-substituted .beta.-aminocrotonic acid esters of the formula ##STR1## in which R.sup.1 is hydrogen, or alkyl or alkenyl with up to 4 carbon atoms; PA1 R.sup.2 is straight-chain or branched alkyl or alkenyl with up to 9 carbon atoms, optionally interrupted by O or S, and optionally substituted by halogen, phenoxy, dimethylamino, cyclic alkyl or alkenyl with up to 8 carbon atoms which are optionally substituted by halogen, dimethylamino, or alkyl, alkoxy or alkylthio with up to 4 carbon atoms, phenyl which is optionally substituted by halogen, dimethylamino, phenoxy, or alkyl, alkenyl, acyl, alkoxy, alkenoxy or alkynoxy containing up to 4 carbon atoms, or a 5- or 6-membered heterocyclic ring containing at least one O, S or N hetero-atom and optionally substituted by halogen, alkyl or alkoxy containing up to 4 carbon atoms or R.sub.2 is further more cyclic alkyl or alkenyl with up to 8 carbon atoms optionally substituted by halogen, dimethylamino, or alkyl, alkoxy or alkylthio with up to 4 carbon atoms; phenyl optionally substituted by halogen, dimethylamino, phenoxy, or alkyl, alkenyl, acyl, alkoxy, alkenoxy or alkynoxy containing up to 4 carbon atoms; or a 5- or 6-membered heterocy…