反应详情

温度

180 °C

A mixture of 430 mg (1.07 mmol) 5-bromo-2-(4-isopropyl-phenyl)-7-methoxy-1-(2-methoxy-ethyl)-1H-benzoimidazole (example 22), 125 mg (1.07 mmol) zinc cyanide and 20 mg tetrakis(triphenylphosphine) palladium in 5 ml DMF is heated in a microwave oven for 75 min (180° C.). After that the reaction mixture is poured on water and extracted (3×) with ethyl acetate. The combined organic layers are washed with water (3×) and brine, dried over MgSO4, filtered and concentrated in vacuo. The residue is purified by flash-chromatography on silica gel (hexane:EtOAc=3:1) to afford 250 mg of the title compound as a colorless solid.

1. additionAfter that the reaction mixture is poured on water
2. extractionextracted (3×) with ethyl acetate
3. washThe combined organic layers are washed with water (3×) and brine
4. dry with materialdried over MgSO4
5. filtrationfiltered
6. concentrationconcentrated in vacuo
7. customThe residue is purified by flash-chromatography on silica gel (hexane:EtOAc=3:1)