N,N'-Dimethylurea → 4,5-Dihydroxy-1,3-dimethylimidazolidin-2-one
Reaktionsgleichung
[C:1]([NH:5][CH3:6])([NH:3][CH3:4])=[O:2].[CH:7]([CH:9]=[O:10])=[O:8].[OH-].[Na+]>>[OH:8][CH:7]1[CH:9]([OH:10])[N:5]([CH3:6])[C:1](=[O:2])[N:3]1[CH3:4]Komponenten
4
Versuchsvorschrift
Dimethylurea (2 moles, 176 parts) and glyoxal (2 moles, 290 parts of 40% aqueous solution) are mixed and the pH adjusted to 7 with sodium hydroxide. The reaction mixture is stirred at room temperature for several hours and the resulting white solid is filtered, washed with methanol and dried. White crystals, m.p. 140° C., are obtained in fine yield.
Aufarbeitung
- filtrationthe resulting white solid is filtered
- washwashed with methanol
- customdried
- customWhite crystals, m.p. 140° C., are obtained in fine yield
Quellen und Nachweise
- ORD-Eintrag
- ord-8eb28bb94238427693b9dbdb71f867f7
- Quelldatensatz
- uspto-grants-1981_11
- Patentnummer
- US04300973
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