反应详情

温度

40 °C

To an oven-dried flask containing a stirbar was added 4-hydroxybiphenyl (1.70 g, 10 mmol), toluenesulfonic acid (190 mg, 1.1 mmol), dichloromethane (DCM, 5 mL), and dimethoxypropane (5 mL). The solution was heated and stirred at 40° C. for 48 h. Solid NaHCO3 (200 mg) was added, followed by EtOAc (100 mL) and NaOH (1N, 20 mL). The layers were separated and the organic layer was further extracted with NaOH (1N, 12×20 mL), brine (30 mL), and was dried over sodium sulfate. Removal of the solvents in vacuo yielded the title compound (385 mg, 18%) which was used without further purification. 1H-NMR (CDCl3): δ 7.56 (m, 4H), 7.44 (m, 2H), 7.34 (m, 1H), 7.14 (m, 2H), 5.24 (s, 2H), 3.54 (s, 3H).

1. additionTo an oven-dried flask containing a stirbar
2. temperatureThe solution was heated
3. customThe layers were separated
4. extractionthe organic layer was further extracted with NaOH (1N, 12×20 mL), brine (30 mL)
5. dry with materialwas dried over sodium sulfate
6. customRemoval of the solvents in vacuo