Hydrogen chloride-ethyl acetate → 2-Methyl-6-[4-(2-piperidin-4-ylethyl)piperidin-1-yl]pyridine dihydrochloride

Participants

Reaction Steps

A 4 M hydrogen chloride/EtOAc solution (2 ml) was added to an EtOAc (10 ml) solution of tert-butyl 4-{2-[1-(6-methylpyridin-2-yl)piperidin-4-yl]ethyl}piperidine-1-carboxylate (650 mg), followed by stirring at room temperature for 2 days. The reaction liquid was concentrated to obtain 2-methyl-6-[4-(2-piperidin-4-ylethyl)piperidin-1-yl]pyridine dihydrochloride (644 mg) as a yellow amorphous substance.

Provenance & Evidence