Potassium Carbonate → 2-(6-bromo-2-oxo-7-phenyl-2,3-dihydro-1H-pyrido[2,3-b][1,4]oxazin-1-yl)acetonitrile

Participants

Reaction Conditions

Reaction Steps

A mixture of 6-bromo-7-phenyl-1H-pyrido[2,3-b][1,4]oxazin-2(3H)-one (0.4 g, 1.311 mmol), 2-bromoacetonitrile (0.472 g, 3.93 mmol) and potassium carbonate (0.544 g, 3.93 mmol) in DMF (4 ml) was stirred at 50° C. for 2 h. The reaction mixture was diluted with water (20 ml) and extracted with dichloromethane (3×20 ml). The combined organic phase was washed with water, brine, dried over sodium sulfate and concentrated to give crude product which was purified by column chromatography (biotage 25 g) eluted with 0-50% ethyl acetate/cyclohexane to afford product (0.19 g) 1H NMR (500 MHz, CDCl3) 7.45-7.50 (m, 3H), 7.4-7.43 (m, 2H), 7.31 (s, 1H), 4.93 (s, 2H), 4.83 (s, 2H).

Provenance & Evidence