反应详情

To a solution of 3-fluoro-4-nitrophenol (2 g, 12.7 mmol) in dry DMF (67 mL) was added, by aliquots, 2 equivalents of sodium thiomethoxide (1.78 g, 25.5 mmol) followed by 3 equivalents of potassium carbonate (5.27 g, 38.2 mmol). The mixture was stirred at room temperature for 23 hours and then water (100 mL) was added. The mixture was extracted with EtOAc, and the combined organic layers washed successively with water (60 mL) and brine (60 mL) and then dried over MgSO4. The solvent was evaporated under vacuum to provide the title compound (2.12 g, 90%) as a yellow powder. 1H-NMR (δ, ppm, DMSO-d6): 2.44 (s, 3H, HMe), 6.72 (d, 1H, Harom 6, J6-5=9.0 Hz), 6.79 (s, 1H, Harom 2), 8.19 (d, 1H, Harom 5, J5-8=9.1 Hz), 11.20 (broad s, 1H, OH).

1. extractionThe mixture was extracted with EtOAc
2. washthe combined organic layers washed successively with water (60 mL) and brine (60 mL)
3. dry with materialdried over MgSO4
4. customThe solvent was evaporated under vacuum