反应详情

2,5-Dimethylpyridine 1-oxide (2.5 g, 20.3 mmol) was added to acetic anhydride (8.2 mL) at 100° C. over a period of 30 min. Then the mixture was refluxed 1 h. The mixture was cooled to room temperature and carefully quenched with ethanol (11 mL). The reaction mixture was concentrated. The residue was treated with 1N HCl (6 mL) and refluxed 1 h. The reaction was concentrated and the residue was partitioned between ethyl acetate and water. The organic phase was dried over sodium sulfate, filtered and concentrated to give (5-methylpyridin-2-yl)methanol (2 g, 80.0% yield) as a light yellow oil. LCMS MH+ 124.

1. temperatureThen the mixture was refluxed 1 h
2. customcarefully quenched with ethanol (11 mL)
3. concentrationThe reaction mixture was concentrated
4. additionThe residue was treated with 1N HCl (6 mL)
5. temperaturerefluxed 1 h
6. concentrationThe reaction was concentrated
7. customthe residue was partitioned between ethyl acetate and water
8. dry with materialThe organic phase was dried over sodium sulfate
9. filtrationfiltered
10. concentrationconcentrated