Diethyl Oxalate → HCID 67133792, Verbindung
Reaktionsgleichung
[NH2:1][C:2]1[C:11]([NH2:12])=[CH:10][C:5]([C:6]([O:8][CH3:9])=[O:7])=[C:4]([CH3:13])[CH:3]=1.[C:14](OCC)(=[O:20])[C:15](OCC)=[O:16]>>[CH3:13][C:4]1[CH:3]=[C:2]2[C:11]([NH:12][C:14](=[O:20])[C:15](=[O:16])[NH:1]2)=[CH:10][C:5]=1[C:6]([O:8][CH3:9])=[O:7]Komponenten
3
Reaktionsbedingungen
- Temperatur
- 145 °C
Versuchsvorschrift
A mixture of 3.98 g of methyl 4,5-diamino-2-methylbenzoate and 40 mL of diethyl oxalate was stirred at 145° C. for 3 hours. After cooling to room temperature, the solid was collected by filtration, washed with diethyl ether, and dried under reduced pressure to obtain 4.75 g of methyl 7-methyl-2,3-dioxo-1,2,3,4-tetrahydroquinoxaline-6-carboxylate.
Aufarbeitung
- temperatureAfter cooling to room temperature
- filtration