1-Methylpiperazine → HCID 23296274, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of crude 6-[3-chloropropyl]oxy-1-methyl-3-{2-[3-(2-quinolylmethoxy)benzyl]tetrazolyl}quinolin-2-one (180 mg, 0.317 mmol) and N-methylpiperazine (127 mg, 1.27 mmol) was stirred under an argon flow at a bath temperature of 120° C. for 90 minutes. The reaction mixture was concentrated under reduced pressure, and purified through silica gel chromatography (developer: chloroform-methanol (20:1)). Fractions containing the target compound were collected, and concentrated under reduced pressure, to thereby obtain the free base of the title compound (180 mg, 0.285 mmol) as yellow oily matter. The thus-obtained free base was dissolved in methanol (2 ml), and a solution of hydrochloric acid (4N) in ethyl acetate (285 μl, 1.14 mmol) was added thereto. The mixture was crystallized from a methanol-diethylether mixture, to thereby obtain the trihydrochloride; i.e., the title compound, as yellow needles (143 mg, 0.203 mmol, 64.1%).

Provenance & Evidence