Water → (S)-2-(1H-indazol-5-yl)-3-(methyl(1-phenylethyl)amino)quinoxaline-6-carboxylic acid

Participants

Reaction Steps

To a solution of (S)-methyl 2-(1H-indazol-5-yl)-3-(methyl(1-phenylethyl)amino)quinoxaline-6-carboxylate (100 mg, 0.23 mmol) in methanol (20 mL) was added NaOH (37 mg, 0.93 mmol) and water (1 mL) with stirring for 1 day at room temperature. The resulting mixture was concentrated under vacuum, diluted with water (20 mL), and adjusted to pH 5 with HCl (3N). The product was precipitated from solution via the addition of water and collected by filtration to give (S)-2-(1H-indazol-5-yl)-3-(methyl(1-phenylethyl)amino)quinoxaline-6-carboxylic acid as a yellow solid (48.9 mg, 51%).

Provenance & Evidence