反应详情

温度

50 °C

Ethyl 3-ethoxy-3-(4-hydroxyphenyl)propionate (100 mg, 0.420 mmol) produced in Example 1 (1C) and [4-(trifluoromethyl)phenyl]methanol (111 mg, 0.630 mmol) were dissolved in tetrahydrofuran (10 mL), and triphenylphosphine (178 mg, 0.680 mmol) and a 40% diethyl azodicarboxylate toluene solution (309 μL, 0.680 mmol) were added thereto at room temperature, and then, the resulting mixture was stirred under a nitrogen atmosphere at 50° C. for 4 hours. After the reaction solution was cooled to room temperature, the solvent was distilled off under reduced pressure, and the resulting residue was purified by silica gel column chromatography (hexane:ethyl acetate=100:0 to 95:5 (v/v)), whereby the objective title compound was obtained as a colorless oily substance (125 mg, yield: 75%).

1. temperatureAfter the reaction solution was cooled to room temperature
2. distillationthe solvent was distilled off under reduced pressure
3. customthe resulting residue was purified by silica gel column chromatography (hexane:ethyl acetate=100:0 to 95:5 (v/v)), whereby the objective title compound
4. customwas obtained as a colorless oily substance (125 mg, yield: 75%)