反应详情

温度

0 °C

To a solution of 1-[2-(methoxymethoxy)-4-propylphenyl]propan-1-ol (12.7 g, 53.3 mmol) and triethylsilane (21.3 mL, 133 mmol) in CH2Cl2 (120 mL) at 0° C. was added trifluoroacetic acid (16.4 mL, 213 mmol) slowly with an outlet needle attached to the round-bottom flask. The solution was stirred at 0° C. for 5 min and then at room temperature for 14 h. Water (40 mL) was added and the mixture was stirred at room temperature for 2 h. Extraction in CH2Cl2 (2×150 mL) with 50% saturated brine (5×100 mL) removed all of the trifluoroacetic acid. Flash chromatography with silica gel (gradient to 5% EtOAc/hexanes) furnished the title compound as a light green liquid (3.60 g, 38% yield): 1H NMR (300 MHz, CDCl3) δ 0.93 (t, 3H, J=7.3 Hz), 0.97 (t, 3H, J=7.3 Hz), 1.62 (m, 4H), 2.52 (m, 4H), 4.58 (s, 1H), 6.60 (s, 1H), 6.69 (d, 1H, J=7.6 Hz), 7.01 (d, 1H, J=7.6 Hz); MS m/e 179 (M+H)+.

1. waitat room temperature for 14 h
2. stirringthe mixture was stirred at room temperature for 2 h
3. extractionExtraction in CH2Cl2 (2×150 mL) with 50% saturated brine (5×100 mL)
4. customremoved all of the trifluoroacetic acid