Dimethyl 3-oxoglutarate → Methyl 3-[7-(diethylamino)-2-oxo-2h-chromen-3-yl]-3-oxopropanoate
Reaktionsgleichung
[CH2:1]([N:3]([CH2:13][CH3:14])[C:4]1[CH:5]=[C:6]([OH:12])[C:7](=[CH:10][CH:11]=1)[CH:8]=O)[CH3:2].[CH3:15][O:16][C:17]([CH2:19][C:20]([CH2:22][C:23](OC)=[O:24])=[O:21])=[O:18]>>[CH2:1]([N:3]([CH2:13][CH3:14])[C:4]1[CH:5]=[C:6]2[C:7]([CH:8]=[C:22]([C:20]([CH2:19][C:17]([O:16][CH3:15])=[O:18])=[O:21])[C:23](=[O:24])[O:12]2)=[CH:10][CH:11]=1)[CH3:2]Komponenten
3
Versuchsvorschrift
A solution of 1.93 g 4-diethylaminosalicylaldehyde, 1.80 g. dimethyl 1,3-acetone dicarboxylate in 10 ml. alcohol containing 10 drops piperidine was heated under reflux on a steam bath for 2 hours. After chilling in the freezer, the product was collected and recrystallized from a mixture of alcohol and acetonitrile. Yield 2.6 g (82%).
Aufarbeitung
- temperatureunder reflux on a steam bath for 2 hours
- temperatureAfter chilling in the freezer
- customthe product was collected
- customrecrystallized from a mixture of alcohol and acetonitrile