反应详情

5-(2-Chloropyridin-3-yl)-1-[(3-fluorophenyl)sulfonyl]-1H-pyrrole-3-carbaldehyde (420 mg), copper (I) cyanide (516 mg), tris(dibenzylideneacetone)dipalladium (0) (53 mg) and 1,1′-bis(diphenylphosphino)ferrocene (96 mg) were mixed in 1,4-dioxane (20 mL), and the mixture was heated under reflux for 3 hr. The reaction mixture was cooled to around room temperature, copper (I) cyanide (516 mg), tris(dibenzylideneacetone)dipalladium (0) (53 mg) and 1,1′-bis(diphenylphosphino)ferrocene (96 mg) were added and the mixture was heated under reflux for 60 hr. The reaction mixture was allowed to cool, water and ethyl acetate were added and the mixture was filtered. The obtained ethyl acetate layer was washed with saturated brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (eluent: hexane-ethyl acetate=7:3→3:2) to give the title compound as a colorless oil (yield 70 mg, 17%).

1. temperaturethe mixture was heated
2. temperatureunder reflux for 3 hr
3. temperatureThe reaction mixture was cooled to around room temperature
4. temperaturethe mixture was heated
5. temperatureunder reflux for 60 hr
6. temperatureto cool
7. filtrationthe mixture was filtered
8. washThe obtained ethyl acetate layer was washed with saturated brine
9. dry with materialdried over anhydrous magnesium sulfate
10. concentrationconcentrated under reduced pressure
11. customThe residue was purified by silica gel column chromatography (eluent: hexane-ethyl acetate=7:3→3:2)