反应详情

温度

0 °C

To a solution of 2-(2-fluoro-4-methoxyphenyl)propan-2-ol from Step A (3.89 g, 21.14 mmol) in methylene chloride (50 ml) at 0° C., MsCl (1.95 ml, 25.4 mmol) and triethylamine (6.52 ml, 46.5 mmol) were added. The solution was stirred at 0° C. and then room temperature for 2 h. The solution was diluted with methylene chloride (100 ml), washed with water, and dried over sodium sulfate. The title compound was obtained as an oil after flash column using EtOAc:hexane=1:9 as the elute. 1H NMR (CDCl3, 500 MHz) δ 7.25 (t, J=9.0 Hz, 1H), 6.68 (dd, J=8.5, 2.5 Hz, 1H), 6.63 (dd, J=13, 2.5 Hz, 1H), 5.20 (d, J=17.0 Hz, 2H), 3.82 (s, 3H), 2.18 (s, 3H).

1. washwashed with water
2. dry with materialdried over sodium sulfate