反应详情

3-(2-Chloro-4-methoxy-phenyl)-2-(2-chloro-pyridin-4-yl)-1,1,1-trifluoro-butan-2-ol (Example 132, 0.38 g) in ethyl-methyl ketone (5 mL) was treated with sodium iodide (600 mg) and HI-57% (0.132 mL) and heated for 2.5 h under reflux. The reaction mixture was then concentrated in vacuo, diluted with water, and pH adjusted to 7 with a saturated aqueous NaHCO3 solution. The mixture was extracted twice with ethyl acetate. The combined organic phases were washed with 0.5M sodium-thiosulfate and brine, dried over MgSO4 and concentrated in vacuo. The residue was purified by flash chromatography (20 g silica gel, ethyl acetate/heptane 20:80) to give the title compound as white solid (375 mg). MS (m/e)=471.9 (MH+).

1. temperatureheated for 2.5 h
2. temperatureunder reflux
3. concentrationThe reaction mixture was then concentrated in vacuo
4. additiondiluted with water
5. extractionThe mixture was extracted twice with ethyl acetate
6. washThe combined organic phases were washed with 0.5M sodium-thiosulfate and brine
7. dry with materialdried over MgSO4
8. concentrationconcentrated in vacuo
9. customThe residue was purified by flash chromatography (20 g silica gel, ethyl acetate/heptane 20:80)