反应详情

温度

0 °C

2-Propylphenol (15.0 g, 110 mmol) was dissolved in DMF (70 mL), and stirred at 0° C. To the solution was added K2CO3 (30.43 g, 220.2 mmol) and ethyl 2-bromoacetate (13.43 mL, 121.1 mmol), and the reaction was stirred at room temperature for 3.5 h. The reaction was diluted with water, and the product was extracted with EtOAc twice. The organic layer was washed with water, brine, dried over Na2SO4, and concentrated in vacuo to give residue. The residue was purified using silica gel column chromatography (hexane/EtOAc=30/1) to give 4.2 (25.4 g). 1H NMR (400 MHz) (CDCl3) δ 7.18-7.08 (2H, m); 6.91 (1H, t, J=7.4 Hz); 6.71 (1H, d, J=8.1 Hz); 4.62 (2H, s); 4.25 (2H, q, J=7.1 Hz); 2.68-2.57 (2H, m); 1.70-1.60 (2H, m); 1.29 (3H, t, J=7.1 Hz); 0.95 (3H, t, J=7.4 Hz).

1. stirringthe reaction was stirred at room temperature for 3.5 h
2. extractionthe product was extracted with EtOAc twice
3. washThe organic layer was washed with water, brine
4. dry with materialdried over Na2SO4
5. concentrationconcentrated in vacuo
6. customto give residue
7. customThe residue was purified