Reacción #85138

Ecuación de reacción

2,2,2-trifluoroethyl trifluoromethanesulphonate

potassium carbonate

2,2,2-trifluoroethyl trifluoromethanesulphonate

4-iodo-6-methoxypyridin-3-ol

water ethyl acetate

→

4-Iodo-2-methoxy-5-(2,2,2-trifluoroethoxy)pyridine

Disolventes

dimethylformamide

acetonitrile

Condiciones de reacción

Tratamiento posterior

1. 1
   Otrothe mixture was irradiated in a microwave at 150° C. for 30 min
2. 2
   Otrothe reaction mixture was once more irradiated in the microwave at 150° C. for 30 min
3. 3
   Extracciónthe aqueous phase was extracted twice with ethyl acetate
4. 4
   LavadoThe combined organic phases were washed with saturated aqueous sodium chloride solution
5. 5
   Secadodried (sodium sulphate)
6. 6
   Filtraciónfiltered
7. 7
   Concentraciónconcentrated under reduced pressure
8. 8
   Otrodried

Procedimiento

466 mg (3.4 mmol, 2.0 eq.) of potassium carbonate and 567 mg (2.5 mmol, 1.5 eq.) of 2,2,2-trifluoroethyl trifluoromethanesulphonate were added to a solution of 455 mg (purity 93%, 1.7 mmol) of 4-iodo-6-methoxypyridin-3-ol in 10 ml of dimethylformamide and 0.4 ml of acetonitrile, and the mixture was irradiated in a microwave at 150° C. for 30 min. A further 393 mg (1.7 mmol, 1.0 eq.) of 2,2,2-trifluoroethyl trifluoromethanesulphonate were added, and the reaction mixture was once more irradiated in the microwave at 150° C. for 30 min. After addition of water/ethyl acetate and phase separation, the aqueous phase was extracted twice with ethyl acetate. The combined organic phases were washed with saturated aqueous sodium chloride solution, dried (sodium sulphate), filtered, concentrated under reduced pressure and dried. Yield: 500 mg (purity 94%, 94% of theory)

Fuente