Reacción #1755450

Ecuación de reacción

2,2,3,3-tetrafluoropropan-1-ol

triethylamine

Trifluoromethanesulfonyl fluoride

→

2,2,3,3-tetrafluoropropyl trifluoromethanesulfonate

Disolventes

chloroform

Condiciones de reacción

Tratamiento posterior

1. 1
   Otrosealed
2. 2
   Otrowas set to −10° C
3. 3
   Otrodid not exceed −5° C
4. 4
   workup.ADDITIONOnce the addition
5. 5
   workup.ADDITIONThe reaction mix
6. 6
   Lavadowashed with 2×500 mL portions of water and 1×250 mL portion of 1N HCl
7. 7
   OtroThe chloroform solvent was removed by rotary evaporation
8. 8
   SecadoThe product was dried over anhydrous magnesium sulfate which
9. 9
   Filtraciónwas then filtered from the product

Procedimiento

2,2,3,3-tetrafluoropropan-1-ol (244.3 g, 1.85 mol, obtained from Sinochem Corp.), triethylamine (187.2 g, 1.85 mol, obtained from Aldrich Chemical Co.) and 500 mL of chloroform were combined in a 2-liter Parr pressure reactor and sealed. The reactor temperature was set to −10° C. Trifluoromethanesulfonyl fluoride (281.33 g, 1.85 mol, obtained from 3M Company) was added at such a rate that the temperature did not exceed −5° C. Once the addition was complete, the mix was held at −10° C. for 45 minutes. The reaction mix was then emptied and washed with 2×500 mL portions of water and 1×250 mL portion of 1N HCl. GC analysis of the reaction mixture indicated a 97 percent conversion to the product. The chloroform solvent was removed by rotary evaporation. The product was dried over anhydrous magnesium sulfate which was then filtered from the product.

Fuente