Reaktion #1061091

Reaktionsgleichung

2-ethylhexylamine

methyl carbamate

toluene

→

N-(2-ethylhexyl)urea

Ausbeute 91.7%

Lösungsmittel

Methanol

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeInto a 300 ml reaction vessel
2. 2
   Sonstigeequipped with a distillation apparatus
3. 3
   Temperaturheated
4. 4
   Sonstigewas removed
5. 5
   Temperaturthe mixture was refluxed
6. 6
   Temperaturby heating for 30 minutes
7. 7
   workup.STIRRINGwith stirring
8. 8
   Temperaturto cool
9. 9
   workup.DISTILLATIONThe toluene was distilled off under reduced pressure
10. 10
    Waschenthe residue was washed with n-hexane
11. 11
    Filtrationcollected by filtration

Vorschrift

Into a 300 ml reaction vessel equipped with a distillation apparatus were introduced 50 g of 2-ethylhexylamine, 29 g of methyl carbamate and 100 ml of toluene, and to the mixture was added 0.1 g of dibutyl tin oxide as a catalyst and heated with stirring. Methanol formed during the reaction was removed, when the reflux temperature was raised to 110° C., i.e., the boiling point of toluene, the distillation apparatus was taken off and instead a reflux condenser was attached and the mixture was refluxed by heating for 30 minutes with stirring, then allowed to cool. The toluene was distilled off under reduced pressure, and the residue was washed with n-hexane and collected by filtration to obtain 61 g of N-(2-ethylhexyl)urea.

Quelle