反应详情

To a mixture of potassium cyanide (0.55 g, 8.4 mmol) in dimethyl sulfoxide (10 mL) at 23° C. was slowly added 5-bromo-2-(bromomethyl)-1,3-difluorobenzene (2 g, 7.0 mmol), and the reaction mixture was stirred for 3 h. The reaction mixture was poured into saturated aqueous sodium chloride (100 mL) and was extracted with ether (3×100 mL). The combined organic layers were washed with saturated aq sodium chloride (3×50 mL), dried over anhydrous sodium sulfate, and concentrated to dryness. Purification of the residue by flash chromatography (0-100% ethyl acetate/hexanes) afforded the title product (0.84 g, 52%). 1H NMR (400 MHz, DMSO-d6) δ ppm 4.04 (s, 2 H) 7.60-7.62 (m, 1 H) 7.62-7.65 (m, 1 H).

1. extractionwas extracted with ether (3×100 mL)
2. washThe combined organic layers were washed with saturated aq sodium chloride (3×50 mL)
3. dry with materialdried over anhydrous sodium sulfate
4. concentrationconcentrated to dryness
5. customPurification of the residue by flash chromatography (0-100% ethyl acetate/hexanes)