Lithium hydroxide, monohydrate → 3-(7-Chloropyrido[4,3-b]pyrazin-5-ylamino)propanoic acid

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Reaction Steps

A solution of methyl 3-(7-chloropyrido[4,3-b]pyrazin-5-ylamino)propanoate (545 mg, 2.04 mmol) and LiOH.H2O (172 mg, 4.09 mmol) in MeOH/H2O (v. 20:1, 40 mL/2 mL) was stirred at room temperature for 20 hours. The volatiles were removed under reduced pressure, and the residue was acidified with HCl solution (1 N) till pH=2˜3. The precipitates were collected by filtration and dried to afford the title compound. MS (m/z): 253 (M+H)+.

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