反应详情

To a cooled (0° C.) solution of 3-ethenyl-6-fluoro-2-methylbenzonitrile (6.05 g, 37.6 mmol) in 200 mL of DCM was added m-CPBA (15.30 g, 85% purity, 75.16 mmol). Then the mixture was stirred at r.t. for 12 hrs and diluted with DCM (300 mL), washed with saturated Na2SO3 (4×300 mL) and brine, dried over anhydrous sodium sulfate, filtered and concentrated. The residue was purified by column chromatography to obtain 6-fluoro-2-methyl-3-oxiran-2-ylbenzonitrile. 1H-NMR (400 MHz, CDCl3) δ ppm 7.41˜7.44 (m, 1H), 7.02 (t, J=8.6 Hz, 1H), 3.95 (t, J=3.1 Hz, 1H), 3.16˜3.19 (m, 1H), 2.60˜2.62 (m, 4H).

1. washwashed with saturated Na2SO3 (4×300 mL) and brine
2. dry with materialdried over anhydrous sodium sulfate
3. filtrationfiltered
4. concentrationconcentrated
5. customThe residue was purified by column chromatography