反应详情

A mixture of 4-ethenyl-3-methyl-2-(methyloxy)benzonitrile (3.90 g, 22.5 mmol) and m-CPBA (85%, 11.7 g, 67.6 mmol) in 300 mL of DCM was stirred at room temperature for 120 hours. The reaction mixture was cooled to 0° C. and was washed subsequently with saturated NaHCO3 (50 mL), saturated Na2SO3 (50 mL), 5% NaOH (50 mL×2) and brine (50 mL), dried over anhydrous Na2SO4 and concentrated. The residue was purified by column chromatography (PE:EtOAc=20:1) to afford 3-methyl-2-(methyloxy)-4-oxiran-2-ylbenzonitrile.

1. temperatureThe reaction mixture was cooled to 0° C.
2. washwas washed subsequently with saturated NaHCO3 (50 mL), saturated Na2SO3 (50 mL), 5% NaOH (50 mL×2) and brine (50 mL)
3. dry with materialdried over anhydrous Na2SO4
4. concentrationconcentrated
5. customThe residue was purified by column chromatography (PE:EtOAc=20:1)