反应详情

温度

50 °C

5-bromo-2-fluoro-benzonitrile (12.4 mmol, 2470 mg) in pyridine (6.5 mL) was treated with ammonium sulfide (40 mass % in water, 1.1 equiv., 13.6 mmol, 2.32 mL) and triethylamine (1.1 equiv., 13.6 mmol, 1.90 mL). The reaction mixture was heated at 50° C. for 3 hours, then cooled to room temperature. The reaction mixture was partitioned between EtOAc and water. The organic later was washed with water (3×), and brine (3×), dried with MgSO4, then concentrated. The residue was purified on silica eluted with 0 to 50% EtOAc in Heptane to provide 5-bromo-2-fluoro-benzenecarbothioamide (2.84 g, 94% yield).

1. temperaturecooled to room temperature
2. customThe reaction mixture was partitioned between EtOAc and water
3. washThe organic later was washed with water (3×), and brine (3×)
4. dry with materialdried with MgSO4
5. concentrationconcentrated
6. customThe residue was purified on silica
7. washeluted with 0 to 50% EtOAc in Heptane