Cesium carbonate → 6-((2-(4-chlorophenylamino)pyrimidin-5-yl)methoxy)quinolin-2(1H)-one

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A mixture of 6-hydroxyquinolin-2(1H)-one (0.057 g, 0.354 mmol), Cs2CO3 (0.192 g, 0.590 mmol) and 5-(chloromethyl)-N-(4-chlorophenyl)pyrimidin-2-amine (0.1 g, 0.394 mmol) in DMF (2.5 mL) was stirred at room temperature for 18 h. The reaction was diluted with water and the resulting suspension filtered. The bright yellow filter cake was taken up in methanol and the mixture was stirred for 1 h. The suspension was filtered and the yellow solid was washed with methanol and dried. The solid was further stirred in DCM/MeOH for 2 days. The mixture was filtered, and the filter cake washed with methanol and dried to give 6-((2-(4-chlorophenylamino)pyrimidin-5-yl)methoxy)quinolin-2(1H)-one as a brown solid (0.04 g, 26%). 1H NMR (400 MHz, DMSO-d6) δ ppm 11.68 (1H, s), 9.95 (1H, s), 8.64 (2H, s), 7.72-7.92 (3H, m), 7.12-7.47 (5H, m), 6.52 (1H, d, J=9.54 Hz), 5.04 (2H, s). LCMS: R.T.=3.77 min; [M+H]+=378.93.

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