反应详情

温度

60 °C

A mixture of 7-(chloromethyl)-5-fluoro-2,3-dihydro-1,4-benzodioxine (0.92 g, 4.55 mmol) and potassium cyanide (1.55 g, 23.8 mmol) in DMF (10 mL) was stirred at 60° C. for 18 h. After cooling to rt ethyl acetate (100 mL) was added and the mixture was washed with water (2×30 mL) then brine (30 mL) and dried over sodium sulfate. Filtration and concentration followed by column chromatography on silica (4:1 hexanes/ethyl acetate) afforded (8-fluoro-2,3-dihydro-1,4-benzodioxin-6-yl)acetonitrile (0.42 g, 46% yield) as a yellow oil. 1H NMR (400 MHz, CDCl3) δ 6.61 (m, 2H), 4.30 (s, 4H), 3.62 (s, 2H)

1. additionwas added
2. washthe mixture was washed with water (2×30 mL)
3. dry with materialbrine (30 mL) and dried over sodium sulfate
4. filtrationFiltration and concentration