反应详情

温度

80 °C

A solution of 1-(2-(4-fluorophenyl)oxazol-4-yl)ethanone (250 mg, 1.22 mmol) in DMF-H2O (7 mL; 2:5 v/v) was cooled to 0° C. and KH2PO4 (327 mg, 2.4 mmol) was added, followed by KCN (116 mg, 1.8 mmol). The reaction mixture was stirred at 80° C. 10 h and then diluted with water. The organic product was extracted with EtOAc and the combined extracts were washed with H2O and brine, dried over anhydrous sodium sulfate, and concentrated under reduced pressure. The crude product was purified by column chromatography (silica gel 60-120 mesh, eluent 8-12% EtOAc in petroleum ether) to afford 3-(2-(4-fluorophenyl)oxazol-4-yl)-3-hydroxypropanenitrile (60 mg, yield 21%) as a light yellow solid. 1H NMR (300 MHz, DMSO-d6) δ 8.11 (d, J=0.7 Hz, 1H), 8.03-7.98 (dd, J=8.9 Hz, 5.4 Hz, 2H), 7.40-7.34 (t J=8.9 Hz, 2H), 6.13-6.12 (d, J=5.3 Hz, 1H), 4.93-4.87 (m, 1H), 2.98-2.93 (dd, J=8.9 Hz, 5.8 Hz, 2H). MS (ESI) m/z: Calculated for C12H9FN2O2: 232.06. found: 233.0 (M+H)+.

1. extractionThe organic product was extracted with EtOAc
2. washthe combined extracts were washed with H2O and brine
3. dry with materialdried over anhydrous sodium sulfate
4. concentrationconcentrated under reduced pressure
5. customThe crude product was purified by column chromatography (silica gel 60-120 mesh, eluent 8-12% EtOAc in petroleum ether)