Reacción #1925211

Ecuación de reacción

acetoxyacetyl chloride

triethanolamine

THF

triethylamine

acetyl chloride

→

N,N-bis(2-acetoxyethyl)-2-(acetoxyacetoxy)ethylamine

Rendimiento 55.0%

Disolventes

water

Condiciones de reacción

Tratamiento posterior

1. 1
   TemperaturaThe resulting mixture was cooled over ice bath
2. 2
   Otroexceeding 30° C
3. 3
   Temperaturaheating
4. 4
   Temperaturaunder reflux
5. 5
   Temperaturathe resulting mixture was heated
6. 6
   Temperaturaunder reflux for further 2 hours
7. 7
   Temperaturato be cooled down
8. 8
   Otroto terminate
9. 9
   Otrothe reaction
10. 10
    OtroThe organic layer thus separated
11. 11
    workup.ADDITIONwas added with 200 g of dichloromethane
12. 12
    Lavadowashed with 100 g of water
13. 13
    ConcentraciónThe organic layer was concentrated under reduced pressure
14. 14
    workup.DISTILLATIONfollowed by distillation under reduced pressure

Procedimiento

In 150 g of THF was dissolved 14.9 g of triethanolamine. To the resulting solution was added 40.4 g of triethylamine. The resulting mixture was cooled over ice bath and 15.7 g of acetyl chloride was added dropwise at a temperature not exceeding 30° C. The reaction mixture was heated over an oil bath to 75° C. and heating was conducted for 2 hours under reflux. Then, 20.5 g of acetoxyacetyl chloride was added and the resulting mixture was heated under reflux for further 2 hours. After the reaction mixture was allowed to be cooled down, 100 g of water was added to terminate the reaction. The organic layer thus separated was added with 200 g of dichloromethane, and then washed with 100 g of water. The organic layer was concentrated under reduced pressure, followed by distillation under reduced pressure, whereby 18.3 g of N,N-bis(2-acetoxyethyl)-2-(acetoxyacetoxy)ethylamine was obtained as. the title compound (boiling point: 153 to 155° C./24 Pa, yield: 55%).

Fuente