反应详情

温度

60 °C

Potassium carbonate (24.8 g, 180 mmol) was added to a solution of 4-hydroxybenzaldehyde (3.66 g, 30 mmol) in DMF (90 mL) at room temperature. After the mixture was stirred at 60° C. for 1 h, 1-bromooctane (8.7 mL, 36 mmol) was added slowly. The reaction mixture was stirred overnight at 80° C. under N2, cooled to room temperature, and poured over 200 mL of icy water. The mixture was extracted with EtOAc (3×50 mL). The combined organic phase was washed with brine (100 mL), dried over MgSO4, and concentrated in vacuo to give a yellow oil (13.67 g). 1H NMR (400 MHz, CDCl3, δ): 9.88 (s, 1H), 7.84 (d, J=8.7 Hz, 2H), 7.00 (d, J=8.7 Hz, 2H), 4.06 (t, J=6.6 Hz, 2H), 1.83-1.76 (m, 2H), 1.62-1.23 (m, 18H), 0.90 (t, J=8.8 Hz, 3H).

1. stirringThe reaction mixture was stirred overnight at 80° C. under N2
2. temperaturecooled to room temperature
3. extractionThe mixture was extracted with EtOAc (3×50 mL)
4. washThe combined organic phase was washed with brine (100 mL)
5. dry with materialdried over MgSO4
6. concentrationconcentrated in vacuo