4-Aminophenol → 4-(3-(2-Methylpyridin-4-yl)pyridin-2-yloxy)benzenamine

Participants

Reaction Steps

To a 25 mL round bottomed flask was added 2-fluoro-3-(2-methylpyridin-4-yl)pyridine (0.7204 g, 3.828 mmol), 4-aminophenol (0.4254 g, 3.832 mmol), and cesium carbonate (1.6144 g, 4.593 mmol) in dimethyl sulfoxide at 90° C. Upon completion, the reaction was filtered through Celite™ and the filtrate was condensed. The reaction mixture was diluted with water (50 mL) and extracted with DCM (3×20 mL). The organic extract was washed with water (3×15 mL), brine (3×15 mL), dried with magnesium sulfate, filtered, and concentrated. The crude product was adsorbed onto a plug of silica gel and chromatographed through a Biotage™ pre-packed silica gel column (40M), eluting with a gradient of 1% to 5% methanol in DCM, to provide 4-(3-(2-methylpyridin-4-yl)pyridin-2-yloxy)benzenamine.

Provenance & Evidence