反应详情

温度

50 °C

Cesium carbonate (2.24 g, 6.9 mmol) was added to a solution of 2-hydroxy-5-trifluoromethyl-benzyl alcohol (885 mg, 4.6 mmol) and benzyl bromide (547 μL, 4.6 mmol) in anhydrous DMF (8 mL) at room temperature. The reaction was heated to 50° C. for 2 hours, cooled, diluted with ethyl acetate (25 mL) and washed with water (3×25 mL), brine (1×25 mL), and dried (Na2SO4), filtered and concentrated to afford 1.3 g of the title compound as a colorless solid. 1H NMR (400 MHz. CDCl3) δ 7.6-7.3 (m, 7H); 7.01 (d, 1H, J=9.1 Hz); 5.18 (s, 2H); 4.79 (s, 2H); 2.8 (bs, 1H).

1. temperaturecooled
2. washwashed with water (3×25 mL), brine (1×25 mL)
3. dry with materialdried (Na2SO4)
4. filtrationfiltered
5. concentrationconcentrated