反应详情

温度

0 °C

2-Methylphenol (12.53 g, 115.9 mmol) was dissolved in DMF (60 mL), and stirred at 0° C. To the solution was added K2CO3 (24.03 g, 173.9 mmol) and 4-trifluoromethylbenzyl bromide (23.08 g, 96.6 mmol), and the reaction was stirred at room temperature for 2 h. Water was added to the reaction, and the product was extracted with EtOAc twice. The organic layer was washed with water and brine, dried over Na2SO4, and concentrated in vacuo to give a crude residue. The crude residue was purified using silica gel column chromatography (hexane/EtOAc=30/1) to give 4.1 (25.1 g). 1H NMR (400 MHz) (CDCl3) δ 7.64 (2H, d, J=8.2 Hz); 7.56 (2H, d, J=8.2 Hz); 7.18-7.08 (2H, m); 6.90 (1H, t, J=7.2 Hz); 6.84 (1H, d, J=8.1 Hz); 5.14 (2H, s); 2.30 (3H, s).

1. stirringthe reaction was stirred at room temperature for 2 h
2. extractionthe product was extracted with EtOAc twice
3. washThe organic layer was washed with water and brine
4. dry with materialdried over Na2SO4
5. concentrationconcentrated in vacuo
6. customto give a crude residue
7. customThe crude residue was purified