反应详情

温度

55 °C

2-fluoro-benzaldehyde (2.00 g, 16.1 mmol), potassium carbonate (2.45 g, 17.7 mmol) and methyl sodium sulfide (17.1 mmol) were dissolved in 10.0 mL DMF in a 50 mL round-bottomed flask under dry nitrogen, topped with a reflux condenser. The reaction mixture was heated to 55° C. for 24 hr. After cooling, the mixture was added to 50 mL of saturated potassium carbonate solution and extracted with 3×50 mL portions of ether. The extracts were dried with magnesium sulfate and evaporated. The crude product was further purified by chromatography on silica gel using 1:1 dichloromethane/n-hexane as eluent to give a yellow oil (2.08 g, 85%). 1H NMR (200 MHz, CDCl3): δ 2.49 (s, 3H), 7.24-7.58 (m, 3H), 7.80 (dd, J1=7.6, J2=1.4, 1H), 10.25 (s, 1H) ppm.

1. customtopped with a reflux condenser
2. temperatureAfter cooling
3. extractionextracted with 3×50 mL portions of ether
4. dry with materialThe extracts were dried with magnesium sulfate
5. customevaporated
6. customThe crude product was further purified by chromatography on silica gel using 1:1 dichloromethane/n-hexane as eluent