Sulfuric Acid → HCID 67485361、化合物

反応式

[Br:1][C:2]1[CH:3]=[C:4]([O:10][C:11]2[C:12]([CH3:17])=[N:13][CH:14]=[CH:15][CH:16]=2)[C:5]([C:8]#[N:9])=[N:6][CH:7]=1.S(=O)(=O)(O)[OH:19].[OH-].[Na+]>O>[Br:1][C:2]1[CH:3]=[C:4]([O:10][C:11]2[C:12]([CH3:17])=[N:13][CH:14]=[CH:15][CH:16]=2)[C:5]([C:8]([NH2:9])=[O:19])=[N:6][CH:7]=1

参加物

実験手順

A flask was charged with 5-bromo-3-(2-methylpyridin-3-yloxy)picolinonitrile (60 g, 207 mmol) and sulfuric acid (203 g, 2068 mmol). The reaction was stirred at ambient temperature overnight. Water (500 mL) was added carefully and neutralized using 50% sodium hydroxide to pH 5.0. The mixture was extracted with dichloromethane and ethyl acetate, dried and concentrated to afford 5-bromo-3-(2-methylpyridin-3-yloxy)picolinamide (63.0 g, 204 mmol, 98.9% yield) as yellow solid.