反应详情

温度

7.5 °C

To 3-amino-4-(methylamino)-6-(4-(pyridin-2-ylmethoxy)-3-(trifluoromethyl)-phenyl)picolinonitrile (1.7 g) in NMP (20 ml) was added 1M hydrochloric acid (22 ml) and cooled to 5-10° C. with an ice bath. To above solution was then added dropwise a solution of sodium nitrite (0.59 g) in water (5 ml) during 5 minutes. The mixture was stirred at room temperature for another 1 hour. After adding ethyl acetate (200 ml), the mixture washed with water (4×100 ml), brine (50 ml), solvent removed under reduced pressure. Upon addition of methanol (20 ml) to the residue, the desired product precipitated and collected by filtration to give 1-methyl-6-(4-(pyridin-2-yl-methoxy)-3-(trifluoromethyl)phenyl)-1H-[1,2,3]triazolo[4,5-c]pyridine-4-carbonitrile (480 mg) as a white solid. 1H NMR (CDCl3) δ: 8.61 (d, 1H), 8.35 (s, 1H), 8.29 (d, 1H), 7.98 (s, 1H), 7.78 (t, 1H), 7.60 (d, 1H), 7.27 (t, 1H), 7.22 (d, 1H), 5.40 (s, 2H), 4.44 (s, 3H). MS m/z 411 (M+H).

1. washthe mixture washed with water (4×100 ml), brine (50 ml), solvent
2. customremoved under reduced pressure
3. additionUpon addition of methanol (20 ml) to the residue
4. customthe desired product precipitated
5. filtrationcollected by filtration