反应详情

To a stirred (4-chloro-2-phenylpyrimidin-5-yl)methanol (242 mg, 1.10 mmol) in CH2Cl2 (11 mL) was added Dess-Martin periodinane (553 mg, 1.43 mmol). The reaction was kept for 2 hrs and was diluted with EtOAc (10 mL).The organic layer was washed with saturated NaHCO3 solution (10 mL), and brine (10 mL), dried (MgSO4), filtered and concentrated under reduced pressure to give the crude product as a white solid (250 mg). The crude product was purified by flash chromatography (silica gel, 20% EtOAc/hexane) to give 4-chloro-2-phenylpyrimidine-5-carbaldehyde (205 mg, 82% for 2 steps) as a white solid.

1. washwas washed with saturated NaHCO3 solution (10 mL), and brine (10 mL)
2. dry with materialdried (MgSO4)
3. filtrationfiltered
4. concentrationconcentrated under reduced pressure
5. customto give the crude product as a white solid (250 mg)
6. customThe crude product was purified by flash chromatography (silica gel, 20% EtOAc/hexane)