反应详情

To a suspension of NaH (95%, 231 mg, 9.18 mmol) in THF (20 ml) was added 4-imidazole carboxaldehyde (588 mg, 6.12 mmol) under ice cooling. The mixture was refluxed for 2 hours under nitrogen atmosphere. The mixture was cooled to room temperature and 1-iodopropane (5 ml) was added to the mixture and then refluxed for another 2 hours. The mixture was cooled down to rt and quenched with water. The solution was extracted with EtOAc (2×50 ml), washed with brine, dried over Na2SO4, concentrated in vacuo. The crude product was purified by column chromatography on silica gel (0-10% MeOH in CH2Cl2) to give the title compound (487 mg, 58%).

1. temperatureThe mixture was refluxed for 2 hours under nitrogen atmosphere
2. temperaturerefluxed for another 2 hours
3. temperatureThe mixture was cooled down to rt
4. customquenched with water
5. extractionThe solution was extracted with EtOAc (2×50 ml)
6. washwashed with brine
7. dry with materialdried over Na2SO4
8. concentrationconcentrated in vacuo
9. customThe crude product was purified by column chromatography on silica gel (0-10% MeOH in CH2Cl2)