反应详情

4-Trifluoromethylbenzyl bromide (0.17 mL, 1.09 mmol, 1 eq) was added dropwise to a stirred solution of 3-benzyloxy-4-hydroxybenzaldehyde (250 mg, 1.09 mmol, 1 eq) and cesium carbonate (357 mg, 1.09 mmol, 1 eq) in N,N-dimethylformamide (10 mL). The reaction mixture was stirred overnight, then diluted with ethyl acetate (30 mL) and washed sequentially with water (4×30 mL), 0.5M aqueous sodium hydroxide (30 mL), 10% HCl and brine. The organic solution was dried over sodium sulfate and evaporated in vacuo to give the product as a white powder (422 mg, 99%). 1H NMR (CDCl3) δ 9.82 (s, 1H, O═C—H), 5.28 (2H, s, CH2Ar), 5.21 (s, 2H, CH2Ph).

1. washwashed sequentially with water (4×30 mL), 0.5M aqueous sodium hydroxide (30 mL), 10% HCl and brine
2. dry with materialThe organic solution was dried over sodium sulfate
3. customevaporated in vacuo