反应详情

温度

40 °C

A solution of 6-ethenylpyridine-3-carbonitrile (0.742 g, 5.70 mmol) in a 2:1 ratio of H2O:t-BuOH (30 mL) was treated with N-bromosuccinimide in portions over 5 min (1.07 g, 5.99 mmol) and stirred at 40° C. for 1 h. After cooling to 5° C., the reaction was basified with drop wise addition of solution of sodium hydroxide (0.684 g in 5 mL of H2O, 17.1 mmol) and stirred for another 1 h. The reaction mixture was poured into H2O (10 mL) and extracted with EtOAc (2×50 mL). The combined organic layers were washed with saturated aqueous NaCl (1×30 mL) and dried over MgSO4. Evaporation of the solvent and purification over SiO2 (0-30% EtOAc/hexanes as eluent) provided 6-(oxiran-2-yl) pyridine-3-carbonitrile.

1. temperatureAfter cooling to 5° C.
2. stirringstirred for another 1 h
3. extractionextracted with EtOAc (2×50 mL)
4. washThe combined organic layers were washed with saturated aqueous NaCl (1×30 mL)
5. dry with materialdried over MgSO4
6. customEvaporation of the solvent and purification over SiO2 (0-30% EtOAc/hexanes as eluent)