Water → HCID 137231113, compound

Participants

Reaction Steps

To a suspension of 7-chloro-6-(4-(dimethylamino)phenyl)-4-hydroxy-3-(3-methylisoxazol-5-yl) quinolin-2(1H)-one (Example 42) (1.5 g, 3.79 mmol) in methanol (8 mL) was added choline hydroxide 46% wt in water (1.997 g, 7.58 mmol). The reaction mixture was stirred at room temperature overnight. The reaction mixture was filtered, washed with methanol and dried. The resulting solid was recrystallized with acetonitrile to give the title compound 7-chloro-6-(4-(dimethylamino)phenyl)-3-(3-methylisoxazol-5-yl)-2-oxo-1,2-dihydroquinolin-4-olate, N-2-hydroxyethyl-N,N-dimethylmethanaminium salt (1.2 g, 2.40 mmol, 63.5% yield) as off-white solid. LCMS: (M+H)+=396; Rt=2.39 min. HRMS: calculated for C21H19ClN3O3 (M+H)+: 396.1115. found: 396.1092.

Provenance & Evidence