反应详情

To a solution of methyl 2-(2-oxo-1,6-naphthyridin-1(2H)-yl)acetate (1.51 g, 6.92 mmol) in THF (10 mL) was added sodium hydroxide (4 mL of a 3 N aqueous solution, 13.8 mmol) and the reaction mixture was stirred at room temperature for 18 h. The resulting solution was diluted with ethyl acetate and washed with water. The aqueous phase was separated, adjusted to pH 2 with aqueous HCl and extracted with ethyl acetate. The organic phase was separated, dried (Na2SO4), filtered and concentrated under vacuum to give 2-(2-oxo-1,6-naphthyridin-1(2H)-yl)acetic acid. Retention time (min)=0.368, method [3], MS (ESI) 205.0 (M+H).

1. washwashed with water
2. customThe aqueous phase was separated
3. extractionextracted with ethyl acetate
4. customThe organic phase was separated
5. dry with materialdried (Na2SO4)
6. filtrationfiltered
7. concentrationconcentrated under vacuum