反应详情

To a solution of 2-methyl-1,5-naphthyridine (216.0 mg, 1.5 mmol) in 1,4-dioxane (5 mL) was added SeO2 (183.0 mg, 1.65 mmol) and the reaction mixture was refluxed for 0.5 hr, when the TLC showed no starting material left, then cooled to room temperature and filtered through celite. The solvent was removed under reduced pressure and the residue was purified by Biotage column (AcOEt: nHex=3:1) to give [1,5]naphthyridine-2-carbaldehyde as a white solid (142.3 mg, 60.0). LR-ES m/e 159 (MH+).

1. temperaturethe reaction mixture was refluxed for 0.5 hr
2. waitleft
3. filtrationfiltered through celite
4. customThe solvent was removed under reduced pressure
5. customthe residue was purified by Biotage column (AcOEt: nHex=3:1)