Reaktionsgleichung
[CH3:1][C:2]1[CH:7]=[C:6]([CH3:8])[NH:5][C:4](=[O:9])[CH:3]=1.[OH-].[K+].[CH2:12](I)[CH3:13]>C(O)C>[CH2:12]([N:5]1[C:6]([CH3:8])=[CH:7][C:2]([CH3:1])=[CH:3][C:4]1=[O:9])[CH3:13]Komponenten
5
Edukt 3
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
A mixture of 4,6-dimethyl2(1H)-pyridone (2.46 g., 0.02 moles), potassium hydroxide (1.58 g., 0.024 moles) and ethyl iodide (6.24 g., 0.04 moles) in 50 ml. ethanol is heated at reflux for 3 hours. The ethanol is removed under vacuum leaving a solid residue which is extracted with methylene chloride. The methylene chloride extracts are washed with 2.5 N sodium hydroxide, water, a saturated salt solution, and dried over sodium sulfate. Evaporation of the dried extracts affords 1-ethyl-4,6-dimethyl-2(1H)-pyridone as a pale yellow oil (1.5 g., 48%) which shows a single spot on thin layer chromatography.
Aufarbeitung
- temperatureat reflux for 3 hours
- customThe ethanol is removed under vacuum
- customleaving a solid residue which
- extractionis extracted with methylene chloride
- washThe methylene chloride extracts are washed with 2.5 N sodium hydroxide, water
- dry with materiala saturated salt solution, and dried over sodium sulfate
- customEvaporation of the dried extracts
Quellen und Nachweise
- ORD-Eintrag
- ord-0112d6e67f9b4b5baf238050d3548d48
- Quelldatensatz
- uspto-grants-1976_05
- Patentnummer
- US03957997
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