反应详情

Sodium hydride (3.78 g, 80% suspension in oil) was added to a solution of 3-pyridinol (10 g) in THF (150 ml) at 0°. The mixture was stirred under nitrogen for 30 min, treated dropwise with methyl bromoacetate (19.3 g), heated under reflux for 24 h, poured into ice-water (200 ml) and extracted with ethyl acetate (2×100 ml). The combined organic extracts were dried and concentrated to give an oil which was purified by FCC, eluting with System G (98:2:1) to give the title compound (4 g), as an oil. T.l.c. (System E 80:20:1) Rf 0.46

1. temperatureheated
2. temperatureunder reflux for 24 h
3. extractionextracted with ethyl acetate (2×100 ml)
4. customThe combined organic extracts were dried
5. concentrationconcentrated
6. customto give an oil which
7. customwas purified by FCC
8. washeluting with System G (98:2:1)