Hydrochloric Acid → 1-[5-[(Z)-2-cyano-2-(3,4-dimethoxy-phenyl)-vinyl]-thiophen-2-yl]-piperidin-4-yl dimethylamino-acetate hydrochloride

Participants

Reaction Conditions

Reaction Steps

Ethanol (5 mL) and 12N hydrochloric acid (28 μL) were added to Compound 62 (150 mg), and the mixture was heated for dissolution (external temperature: 40° C.). The solution was returned to room temperature, and allowed to stand overnight. The precipitated crystals were recovered through filtration, and the recovered crystals were recrystallized from isopropanol, to thereby yield the target product (yield: 78.7 mg, 48.6%).

Provenance & Evidence