反应详情

To 6-bromo-pyridine-3-carboxaldehyde (300 mg, 1.61 mmol) in toluene was added methyl(triphenylphosphoranylidene)acetate (647 mg, 1.94 mmol) and the solution was refluxed for 6 hrs. The reaction mixture was diluted with EtOAc and then washed three times with H2O, brine, dried. Na2SO4, filtered and concentrated under reduced pressure. The obtained residue was column-chromatographed to yield 3-(6-bromo-pyridin-3-yl)-acrylic acid methyl ester (380 mg, 97%).

1. temperaturethe solution was refluxed for 6 hrs
2. washwashed three times with H2O, brine
3. customdried
4. filtrationNa2SO4, filtered
5. concentrationconcentrated under reduced pressure
6. customThe obtained residue was column-chromatographed