Glyoxal → 1,4-Diethylpiperazin-2-one
Reaktionsgleichung
[CH:1]([CH:3]=O)=[O:2].[CH2:5]([NH:7][CH2:8][CH2:9][NH:10][CH2:11][CH3:12])[CH3:6]>O>[CH2:5]([N:7]1[CH2:8][CH2:9][N:10]([CH2:11][CH3:12])[CH2:3][C:1]1=[O:2])[CH3:6]Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
To 10.0 g (69.0 mmoles) of 40 percent glyoxal and 200 ml of distilled water is rapidly added 8.0 g (69.0 mmoles) of N,N'-diethylethylenediamine. The solution is heated rapidly to reflux and heating maintained for 5 minutes. The dark brown solution is allowed to cool to room temperature and is then evaporated at 60° C. under water pump vacuum to a viscous brown oil. The oil is distilled in a short path distillation apparatus to yield 10 g (93 percent yield) of 1,4-diethylpiperazin-2-one in the form of a yellow oil. Purity is greater than 99 percent by capillary gas chromatograph.