Lithium Hydroxide → HCID 86717941, compound

Participants

Reaction Steps

365 mg (0.76 mmol; purity about 76%) of ethyl 8-[(2,6-difluorobenzyl)oxy]-7-fluoro-2-methylimidazo[1,2-a]pyridine-3-carboxylate Example 111A were dissolved in 16.6 ml of THF/ethanol (5:1), 1.14 ml (1.14 mmol) of 1 N aqueous lithium hydroxide solution were added and the mixture was stirred at RT overnight. Another 2.67 ml (2.67 mmol) of 1 N aqueous lithium hydroxide solution were added, and the mixture was stirred at RT overnight. The mixture was concentrated and the aqueous phase was acidified to pH 4 using 6 N hydrochloric acid. A precipitate formed, and the suspension was cooled with ice water. The solid was filtered off and dried under high vacuum. This gave 236 mg of the target compound (87% of theory, purity 94%).

Provenance & Evidence