2-Hydrazinopyridine → 1-(Pyridin-2-yl)-1H-pyrazol-3-amine

Participants

Reaction Conditions

Reaction Steps

2-Hydrazinylpyridine (100 mg, 0.92 mmol), 3-methoxyacrylonitrile (0.077 mL, 0.92 mmol) and sodium ethoxide (62 mg, 0.92 mmol) were dissolved in ethanol (4.5 mL) and stirred at 80° C. for 2 hours. The reaction mixture was cooled to room temperature, concentrated under reduced pressure, and purified by silica gel chromatography (ethyl acetate/hexanes, linear gradient) to afford 1-(pyridin-2-yl)-1H-pyrazol-3-amine. The purified material contained impurities and was used without further purification. MS ESI calc'd. for C8H9N4 [M+H]+ 161. found 161.

Provenance & Evidence