Cesium carbonate → HCID 11463152, compound

Participants

Reaction Conditions

Reaction Steps

Preparation of 4-[4-(benzyloxy)-3-bromo-2-oxopyridin-1(2H)-yl]benzonitrile 3-bromo-4-[(2,4-difluorobenzyl)oxy]-6-methylpyridin-2(1H)-one (100 mg, 0.36 mmol) was suspended in dimethylsulfoxide (5 mL), cesium carbonate (375 mg, 1.15 mmol) was added and the reaction was shaken for 5 minutes. 4-Fluorobenzonitrile (52 mg, 0.43 mmol was then added, the reaction was heated to 80° C., and stirred. Reaction was monitored by LC/MS, and after 4 h was heated to 100° C. and stirred for 16 hours. Reaction mixture was partitioned between water and ethyl acetate and extracted with ethyl acetate (5×50 mL). The organic extracts were combined, washed with brine, dried over Na2SO4, and filtered. The filtrate was concentrated to an oil, and purified by chromatography (silica gel, hexane/ethyl acetate) to yield a white solid (40 mg, 29%). 1H NMR (400 MHz, CDCl3) δ 7.77 (d, J=8.4 Hz, 2H), 7.52 (d, J=8.8 Hz, 2H), 7.44-7.42 (m, 4H), 7.28 (d, J=7.6 Hz, 1H), 7.26 (s, 1H), 6.24 (d, J=7.6 Hz, 1H); 5.31, (s, 2H). ES HRMS m/z 381.0230 (M+H C19H13BrN2O2 requires 381.0233).

Provenance & Evidence