Methanol → N-[3-({2-[(methoxyacetyl)amino]imidazo[1,2-a]pyridin-6-yl}oxy)phenyl]-3-methylpyridine-2-carboxamide

Participants

Reaction Steps

To a solution of N-{3-[(2-aminoimidazo[1,2-a]pyridin-6-yl)oxy]phenyl}-3-methylpyridine-2-carboxamide (148 mg, 0.412 mmol) in N,N-dimethylacetamide (5 mL) was added methoxyacetyl chloride (37.8 μL, 0.413 mmol), and the mixture was stirred at room temperature for 81 hr. Methanol, tetrahydrofuran and aqueous sodium carbonate solution were added to the reaction mixture, and the mixture was stirred at 60° C. for 8 hr. The reaction mixture was concentrated under reduced pressure, diluted with aqueous sodium hydrogen carbonate solution and extracted with ethyl acetate. The organic layer was washed with aqueous sodium hydrogen carbonate solution and saturated brine, dried over anhydrous magnesium sulfate and filtrated. The filtrate was concentrated under reduced pressure, and the residue was purified by silica gel column chromatography (0%→90% ethyl acetate-hexane) to give the title compound (40.6 mg, 23%) as a pale-yellow solid.

Provenance & Evidence