Triethyloxonium tetrafluoroborate → N-(3-ethoxy-3-ethoxycarbonylpropenylidene)-N-methylmethanaminium tetrafluoroborate
Reaktionsgleichung
[CH3:1][N:2]([CH3:12])[CH:3]=[CH:4][C:5](=[O:11])[C:6]([O:8][CH2:9][CH3:10])=[O:7].[F:13][B-:14]([F:17])([F:16])[F:15].[CH2:18]([O+](CC)CC)[CH3:19]>C(Cl)Cl>[F:13][B-:14]([F:17])([F:16])[F:15].[CH2:18]([O:11][C:5]([C:6]([O:8][CH2:9][CH3:10])=[O:7])=[CH:4][CH:3]=[N+:2]([CH3:1])[CH3:12])[CH3:19]Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Reaktionsbedingungen
- Temperatur
- 10 °C
Versuchsvorschrift
Ethyl 4-dimethylamino-2-oxo-3-butenoate (675 g) is added in the course of 3 hours, while the temperature is maintained at approximately 10° C., to a solution, cooled to 10° C. and through which a stream of argon is passed, of triethyloxonium tetrafluoroborate (862 g) in methylene chloride. The reaction medium is then stirred for 5 hours at a temperature in the region of 20° C. The solution of N-(3-ethoxy-3-ethoxycarbonylpropenylidene)-N-methylmethanaminium tetrafluoroborate thereby obtained is stored under an argon atmosphere, and is used immediately in the subsequent syntheses.
Aufarbeitung
- temperaturecooled to 10° C. and through which a stream of argon
Quellen und Nachweise
- ORD-Eintrag
- ord-51762d188a2a4eb3ba172334db0f0a63
- Quelldatensatz
- uspto-grants-1990_11
- Patentnummer
- US04971979
Notizen zur Reaktion
Wird geladen…