Nicotinic Acid → HCID 57505758, compound

Participants

Reaction Steps

To a solution of nicotinic acid (54 mg, 0.438 mmol) in tetrahydrofuran (3 mL) were added N,N-dimethylformamide (1 drop) and oxalyl chloride (64 μL, 0.734 mmol), and the mixture was stirred at room temperature for 1 hr. The solvent was evaporated under reduced pressure, and the residue and N-{3-[(2-aminoimidazo[1,2-b]pyridazin-6-yl)oxy]phenyl}-3-(1-cyanocyclopropyl)benzamide (150 mg, 0.365 mmol) were dissolved in N-methylpyrrolidone (3 mL), and the mixture was stirred at room temperature for 14 hr. Saturated aqueous sodium hydrogencarbonate solution was added to the reaction mixture, and the mixture was extracted with ethyl acetate. The extract was washed with saturated brine, dried over anhydrous magnesium sulfate, and filtrated. The solvent was evaporated under reduced pressure, and the residue was purified by silica gel column chromatography (ethyl acetate/hexane=20/80→100/0) to give the title compound (100 mg, 53%) as a pale-green powder.

Provenance & Evidence