Thionyl Chloride → HCID 67499807, compound

Participants

Reaction Steps

To a solution of N-(1-(5-fluoropyridin-3-yl)-3-(hydroxymethyl)-1H-pyrazol-4-yl)isobutyramide (0.100 g, 0.359 mmol) in dichloromethane (3.59 ml) was added thionyl chloride (0.157 ml, 2.151 mmol). The reaction was stirred at room temperature for 2 hours. Saturated aqueous sodium bicarbonate was added, and the mixture was extracted with dichloromethane. The combined organic phases were washed with brine and concentrated to give N-(3-(chloromethyl)-1-(5-fluoropyridin-3-yl)-1H-pyrazol-4-yl)isobutyramide (100 mg, 0.337 mmol, 94% yield) as a white solid: mp 172.0-177.0° C.; 1H NMR (400 MHz, CDCl3) δ 8.79 (s, 1H), 8.67 (s, 1H), 8.40 (s, 1H), 7.80 (dt, J=9.4, 2.3 Hz, 1H), 7.42 (s, 1H), 4.77 (s, 2H), 2.63 (hept, J=6.9 Hz, 1H), 1.30 (d, J=6.9 Hz, 6H); ESIMS m/z 298 ([M+H]+).

Provenance & Evidence