N-substituted β-aminocrotonic acid esters

Abstract

Abstract N-substituted β-aminocrotonic acid esters of the formula ##STR1## in which R 1 is hydrogen, or alkyl or alkenyl with up to 4 carbon atoms; R 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 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 heterocyclic ring containing at least one O, S or N heteroatom and optionally substituted by halogen, or alkyl or alkoxy containing up to 4 carbon atoms; or R 1 and R 2 together with the adjoining nitrogen atom form a heterocyclic structure optionally substituted by lower alkyl with 1-4 carbon atoms and optionally containing further heteroatoms in addition to nitrogen, and R 3 is straight-chain or branched alkyl, alkenyl or alkynyl each with up to 10 carbon atoms, or cyclic alkyl or alkenyl with up to 8 carbon atoms, optionally substituted by halogen, alkoxy or alkyl-thio containing up to 4 carbon atoms, phenyl, 3,4-methylenedioxyphenyl, cyclic alkyl or alkenyl with up to 8 carbon atoms; phenyl optionally substituted by dioxymethylene or alkyl, alkenyl, alkynyl, alkoxy, alkenoxy, alkynoxy or acyl containing up to 4 carbon atoms; or a heterocyclic ring containing up to 6 atoms of which at least one is O, N or S, which ring is optionally bonded via alkyl containing up to 4 carbon atoms, Which inhibit the metamorphosis of arthropods.

Inventors

• 👤 Peter Siegle
• 👤 Klaus Sasse
• 👤 Peter Rossler

Bibliographic Details