Ethyl isocyanate → HCID 57749114, compound

Participants

Reaction Steps

To a solution of N-{5-[(2-aminoimidazo[1,2-a]pyridin-6-yl) oxy]-2-fluorophenyl}-1,3-dimethyl-1H-pyrazole-5-carboxamide (70.0 mg, 0.184 mmol) in tetrahydrofuran (3 mL) was added ethyl isocyanate (17.5 μL, 0.221 mmol), and the mixture was stirred at room temperature for 15 hr. The reaction mixture was diluted with water and extracted with ethyl acetate. The organic layer was washed with water and saturated brine, dried over anhydrous magnesium sulfate and filtrated. The filtrate was concentrated under reduced pressure, and the residue was purified by column chromatography (NH silica gel, ethyl acetate) and recrystallized from ethyl acetate-ethanol to give the title compound (21.0 mg, 25%) as a white solid.

Provenance & Evidence