反应详情

温度

0 °C

To a suspension of NaH (390 mg, 8.9 mmol, 55% in mineral oil) in THF (10 mL) at 0° C. was added 4-methoxybenzylalcohol (1.27 g, 8.92 mmol) in THF (5 mL). After 1 h stirring at 0° C. R-(+)-3,3,3-trifluoro-1,2-epoxypropane (500 mg, 4.46 mmol) was added to a 20 mL microwave vial via syringe. The closed vial was heated at 100° C. for 18 h. The reaction mixture was diluted with water and extracted twice with Et2O. The organic phase was washed with brine, dried over MgSO4, filtered and evaporated. Chromatography over silica (cyclohexane-EtOAc 95:5 to cyclohexane-EtOAc 75:25) afforded the title compound: ESIMS [M+NH4]+=268; 1H NMR (360 MHz, CDCl3): δ 7.29 (d, 2H), 6.94 (d, 2H), 4.56 (s, 2H), 4.15 (m, 1H), 3.87 (s, 3H), 3.74 (dd, 1H), 3.66 (dd, 1H), 2.88 (d, 1H).

1. temperatureThe closed vial was heated at 100° C. for 18 h
2. extractionextracted twice with Et2O
3. washThe organic phase was washed with brine
4. dry with materialdried over MgSO4
5. filtrationfiltered
6. customevaporated