Preparation of N-alkenylcarboxamides

Preparation of N-alkenylcarboxamides

N-Alkenylcarboxamides of the formula I I where at least one of the radicals R1 is hydrogen, the second radical R1 is hydrogen or C1-C4-alkyl and R2 is hydrogen or an aliphatic, cycloaliphatic or aromatic radical, are prepared by reacting an alkenyl carboxylate of the formula II II where R1 has the a...

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Bibliographische Detailangaben
Hauptverfasser: RUEHL, THOMAS, FIECHTER, BERND, HEIDER, MARC, HENKELMANN, JO
Format: Patent
Sprache:eng
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Zusammenfassung:N-Alkenylcarboxamides of the formula I I where at least one of the radicals R1 is hydrogen, the second radical R1 is hydrogen or C1-C4-alkyl and R2 is hydrogen or an aliphatic, cycloaliphatic or aromatic radical, are prepared by reacting an alkenyl carboxylate of the formula II II where R1 has the abovementioned meanings and R3 is hydrogen or an aliphatic, cycloaliphatic or aromatic radical, and a carboxamide of the general formula III III where R2 has the abovementioned meanings, in the presence of a base. N-Alkenylcarboxamides of the formula I I where at least one of the radicals R1 is hydrogen, the second radical R1 is hydrogen or C1-C4-alkyl and R2 is hydrogen or an aliphatic, cycloaliphatic or aromatic radical, are prepared by reacting an alkenyl carboxylate of the formula II II where R1 has the abovementioned meanings and R3 is hydrogen or an aliphatic, cycloaliphatic or aromatic radical, and a carboxamide of the general formula III III where R2 has the abovementioned meanings, in the presence of a base.