Hydrogen chloride-ethyl acetate → 8-(cyclohexylmethoxy)-2-methyl-N-(piperidin-4-yl)imidazo[1,2-a]pyridine-3-carboxamide dihydrochloride

Participants

Reaction Steps

To a solution of 1.44 g of tert-butyl 4-({[8-(cyclohexylmethoxy)-2-methylimidazo[1,2-a]pyridin-3-yl]carbonyl}amino)piperidine-1-carboxylate in 15 ml of ethyl acetate was added 3.8 ml of a 4 M hydrogen chloride/ethyl acetate solution, followed by stirring for 1 day. The reaction mixture was concentrated under reduced pressure, and to the obtained residue were added ethyl acetate and ethanol. The resulting solid was collected by filtration and dried to obtain 1.29 g of 8-(cyclohexylmethoxy)-2-methyl-N-(piperidin-4-yl)imidazo[1,2-a]pyridine-3-carboxamide dihydrochloride.

Provenance & Evidence