反应详情

温度

0 °C

To a suspension of 3-amino-4-(methylamino)-6-(4-(pyridin-4-ylmethoxy)-3-(trifluoromethyl)phenyl)picolinonitrile (580 mg) in water (5 ml) and 1,4-dioxane (5 ml), 2N hydrochloric acid (1.089 ml) was added at 0° C. and sodium nitrite (145 mg) in water (1 ml) was added then stirred at 0° C. for 10 min then at 20° C. for 70 h. The reaction mixture was filtered, washed with water, dried in vacuum oven to give 410 mg brown solid. Purified by Biotage SNAP cartridge KP-Sil column (25 g, dichloromethane:methanol=1:0, 20:1 to 10:1) then passed through Strata SCX column (20 g) to give 495 mg brown solid as 1-methyl-6-(4-(pyridin-4-ylmethoxy)-3-(trifluoromethyl)phenyl)-1H-[1,2,3]triazolo[4,5-c]pyridine-4-carbonitrile (83%).

1. additionwas added at 0° C.
2. waitat 20° C. for 70 h
3. filtrationThe reaction mixture was filtered
4. washwashed with water
5. customdried in vacuum oven