反应详情

A mixture of 4-[6-bromo-2-(trichloromethyl)-1H-1,3-benzodiazol-1-yl]pyrimidin-2-amine (1 g, 2.45 mmol), ethane-1,2-diol (15 mL) and cesium carbonate (3 g, 9.18 mmol) was stirred overnight at room temperature and then diluted with 200 mL of water. The resulting solution was extracted with 2×200 mL of dichloromethane. The combined organic layers were washed with 3×200 mL of water, dried over anhydrous sodium sulfate and concentrated under vacuum to afford 300 mg (34%) of 2-[[1-(2-aminopyrimidin-4-yl)-6-bromo-1H-1,3-benzodiazol-2-yl]oxy]ethan-1-ol as a yellow solid. 1H NMR (300 MHz, DMSO) delta 8.39 (d, J=5.4 Hz, 1H), 8.30 (s, 1H), 7.51 (s, 2H), 7.09 (d, J=5.4 Hz, 1H), 4.78 (t, J=5.2 Hz, 2H), 4.08 (t, J=4.2 Hz, 2H); LC-MS: m/z=+350 (M+H)+.

1. extractionThe resulting solution was extracted with 2×200 mL of dichloromethane
2. washThe combined organic layers were washed with 3×200 mL of water
3. dry with materialdried over anhydrous sodium sulfate
4. concentrationconcentrated under vacuum