4-Methylmorpholine → 4-Butyl-4-methylmorpholin-4-ium bromide
Reaktionsgleichung
[CH3:1][N:2]1[CH2:7][CH2:6][O:5][CH2:4][CH2:3]1.[CH2:8]([Br:12])[CH2:9][CH2:10][CH3:11]>C(C(C)=O)C>[Br-:12].[CH2:8]([N+:2]1([CH3:1])[CH2:7][CH2:6][O:5][CH2:4][CH2:3]1)[CH2:9][CH2:10][CH3:11]Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
A sulfonating flask (250 ml) fitted with stirrer, drip funnel and reflux condenser is charged with 22.3 ml (0.2 mol) of N-methylmorpholine and 80 ml of methyl ethyl ketone (MEK), and then 21.4 ml (0.2 mol) of n-butyl bromide are added dropwise over 20 minutes. After initial turbidity under reflux conditions (ca. 80° C.), the reaction mixture becomes more dense and turns an orange-brown colour. After a reaction time of 7 hours, the crystalline slurry is filtered with suction and the filter residue is washed with a small amount of MEK and dried under vacuum. Yield: 23%; m.p. 205° C.