反应详情

To a solution of 2-Bromo-1-(3-bromo-phenyl)-ethanol (4.72 g, 16.9 mmol), imidazole (5.75 g, 84.5 mmol) and dimethylaminopyridine (1.03 g, 8.45 mmol) in DMF at 0° C. was added Chloro-trimethyl-silane (4.56 mL, 3.90 mmol) dropwise. Stirring continued at 0° C. for 2 hours and was then warmed to RT. The mixture was diluted with saturated sodium bicarbonate and extracted with ethyl acetate. The organics were washed with water and brine, dried over anhydrous sodium sulfate, filtered and concentrated in vacuo. The title compound was isolated as a yellow oil (5.85 g, quantitative). 1H NMR (300 MHz, CDCl3): 7.52 (s, 1H), 7.44 (d, 1H), 7.28-7.23 (m, 2H), 4.83 (t, 1H), 3.43 (d, 2H) 0.109 (s, 9H).

1. extractionextracted with ethyl acetate
2. washThe organics were washed with water and brine
3. dry with materialdried over anhydrous sodium sulfate
4. filtrationfiltered
5. concentrationconcentrated in vacuo