Reacción #2175477

Ecuación de reacción

ethylchloroformate

2,2,3,4,4,4-hexafluorobutan-1-ol

triethylamine

ethylchloroformate

methyl-t-butyl ether

→

Ethyl 2,2,3,4,4,4-hexafluorobutyl carbonate

Disolventes

water

Condiciones de reacción

Tratamiento posterior

1. 1
   OtroExample 3 was prepared
2. 2
   Temperaturawas maintained at a temperature between 5° C. and 15° C. with a carbon dioxide/water bath
3. 3
   workup.ADDITIONTo the stirred mix
4. 4
   Temperaturawas maintained between 5° C. and 15° C
5. 5
   workup.ADDITIONOnce addition
6. 6
   OtroThe organic phase was collected
7. 7
   ExtracciónThe water phase was extracted twice with 100 mL portions of methyl-t-butyl ether
8. 8
   LavadoThe organic phase was washed with a 100 mL portion of distilled water
9. 9
   OtroThe ether was removed by rotary evaporation
10. 10
    workup.DISTILLATIONThe remaining sample was purified by fractional distillation

Procedimiento

Example 3 was prepared by combining 2,2,3,4,4,4-hexafluorobutan-1-ol (184 g, 1.012 moles, Lancaster Synthesis Ltd., Ward Hill, Mass.), triethylamine (102 g, 1.008 moles) and methyl-t-butyl ether (350 mL) in a 1-L round bottom flask that was maintained at a temperature between 5° C. and 15° C. with a carbon dioxide/water bath. To the stirred mix, ethylchloroformate (100 g, 0.92 moles) was added from a jacketed addition funnel that was maintained between 5° C. and 15° C. The ethylchloroformate was added over a period of 4 h. Once addition was complete, the reaction mixture was stirred for an additional 16 h and was allowed to warm to room temperature. Then 100 mL of distilled water was added to the reaction mixture. The organic phase was collected. The water phase was extracted twice with 100 mL portions of methyl-t-butyl ether and all of the organic phases were combined. The organic phase was washed with a 100 mL portion of distilled water and a 100 mL portion of 1N HCl. The ether was removed by rotary evaporation. The remaining sample was purified by fractional distillation, using a concentric tube column. The product was analyzed by GC/MS.

Fuente