反应详情

温度

115 °C

To a solution of 5-bromo-pyridine-2-carbonitrile (500 mg, 2.73 mmol) in DMSO (10 mL) in a microwave tube was added 85% sodium methanesulfinate (525 mg, 4.37 mmol) followed by copper (II) triflate (990 mg, 2.74 mmol) and dimethylethylene diamine (890 μL, 8.36 mmol). The mixture was warmed in a microwave reactor at 115° C. After 30 minutes, the mixture was diluted with saturated aqueous ammonium chloride (100 mL) and extracted with ethyl acetate (3×20 mL). The combined organic layers were washed with saturated aqueous ammonium chloride (2×15 mL), brine (3×15 mL), dried over magnesium sulfate, filtered and concentrated. The crude material was triturated with ether to afford 5-methanesulfonyl-pyridine-2-carbonitrile.

1. extractionextracted with ethyl acetate (3×20 mL)
2. washThe combined organic layers were washed with saturated aqueous ammonium chloride (2×15 mL), brine (3×15 mL)
3. dry with materialdried over magnesium sulfate
4. filtrationfiltered
5. concentrationconcentrated
6. customThe crude material was triturated with ether