反应详情

温度

2.5 °C

160 ml of toluene were added to 14.9 g (0.067 mole) of 2-hydroxymethyl-3-methyl-4-(2,2,2-trifluoroethoxy)pyridine in methylene chloride followed by distillation of methylene chloride. The solution was purified with 2.7 g of activated charcoal, filtered and washed with 36 ml of toluene. To this solution 5.4 ml (0.075 mole) of thionyl chloride in 27 ml of toluene were added dropwise and maintained for 3 hours. The gas was removed under vacuum at room temperature, then the resulting mixture was cooled to a temperature of from 0 to 5° C. and stirred for one hour. The product was filtered, washed with 3 ml of toluene and dried in a vacuum dryer at 35-40° C. The yield was 15.65 g (84%).

1. distillationfollowed by distillation of methylene chloride
2. customThe solution was purified with 2.7 g of activated charcoal
3. filtrationfiltered
4. washwashed with 36 ml of toluene
5. temperaturemaintained for 3 hours
6. customThe gas was removed under vacuum at room temperature
7. filtrationThe product was filtered
8. washwashed with 3 ml of toluene
9. customdried in a vacuum dryer at 35-40° C