Sodium Hydroxide → HCID 69506718, compound

Participants

Reaction Steps

Sodium hydroxide (2.71 g, 67.7 mmol) was added to a solution of ethyl 1-[({3-[(ethoxyacetyl)amino]quinolin-4-yl}amino)methyl]cyclohexanecarboxylate hydrochloride (10.15 g, 22.6 mmol) in 9:1 ethanol/water (30 mL), and the solution was heated at reflux for several hours. The ethanol was removed under reduced pressure, and the resulting solution was diluted with water and adjusted to pH 4 to 5 with the addition of 3 M hydrochloric acid. The mixture was then extracted several times with dichloromethane The aqueous fraction was adjusted to pH 7 and extracted several more times with dichloromethane. The combined extracts were dried over magnesium sulfate, filtered, and concentrated under reduced pressure to provide 5.73 g of 1-{[2-(ethoxymethyl)-1H-imidazo[4,5-c]quinolin-1-yl]methyl}cyclohexanecarboxylic acid.

Provenance & Evidence