Hydrochloric Acid → 1-ethyl-3-[4-(imidazo[1,2-a]pyridin-2-yloxy)phenyl]-6-methyl-1,3-dihydro-2H-imidazo[4,5-b]pyridin-2-one

Participants

Reaction Conditions

Reaction Steps

To a solution of ethyl 2-[4-(1-ethyl-6-methyl-2-oxo-1,2-dihydro-3H-imidazo[4,5-b]pyridin-3-yl)phenoxy]imidazo[1,2-a]pyridine-3-carboxylate (62 mg) in EtOH (4 mL) was added sodium hydroxide (1.084 mL). The mixture was stirred at 50° C. for 2 h. Hydrochloric acid (2.168 mL) was added to the mixture, and the mixture was stirred at 60° C. for 10 h. The mixture was concentrated under reduced pressure. The residue was purified by column chromatography (silica gel, EtOAc/hexane) to give the title compound (42.0 mg) as a colorless oil.

Provenance & Evidence