反应详情

To a cooled (0° C.) solution of 3,5-bis(trifluoromethyl)styrene oxide (Description 12, 0.5 g) and benzyl alcohol (1 g) in tetrahydrofuran (10 ml) was added sodium hydride (50% in mineral oil, 48 mg). The solution was stirred at room temperature for 16 hours. A further addition of sodium hydride (20 mg) was made and the solution heated to reflux for 2 hours. The cooled solution was evaporated to dryness and the residue purified by chromatography on silica (eluting with increasing concentrations of ethyl acetate in isohexane 0-20%) to provide the title compound. 1H NMR (360 MHz, CDCl3) δ 3.22 (1H, d J 3.1 Hz), 3.48 (1H, dd J 8.2 Hz and 9.6 Hz), 3.67 (1H, dd J 9.7 Hz and 3.5 Hz), 4.57 (1H, s), 4.98 (1H, m), 7.23-7.37 (5H, m), 7.80 (1H, s), 7.83 (2H, s).

1. temperaturethe solution heated
2. temperatureto reflux for 2 hours
3. customThe cooled solution was evaporated to dryness
4. customthe residue purified by chromatography on silica (eluting with increasing concentrations of ethyl acetate in isohexane 0-20%)