反应详情

温度

60 °C

Ethyl β-oxo-5-furo[2,3-c]pyridinepropionate (583 mg, 2.5 mmol) obtained in Example 7 was dissolved in 10 mL of toluene, and 3 g of 10% sodium hydroxide aqueous solution was added with stirring. After addition, the reaction mixture was heated to 60° C., and a reaction was carried out for 8 hours with stirring. It was then cooled to room temperature, the organic layer was separated, the aqueous layer was extracted twice with 5 mL of methylene chloride, and the combined organic layer was dried with anhydrous magnesium sulfate and then concentrated in a rotary evaporator. The resulting solids were recrystallized from a mixed solvent of toluene-hexane, giving 205 mg (51% yield) of 5-acetylfuro[2,3-c]pyridine in a purity of 99% by HPLC.

1. additionAfter addition
2. stirringwith stirring
3. temperatureIt was then cooled to room temperature
4. customthe organic layer was separated
5. extractionthe aqueous layer was extracted twice with 5 mL of methylene chloride
6. dry with materialthe combined organic layer was dried with anhydrous magnesium sulfate
7. concentrationconcentrated in a rotary evaporator
8. customThe resulting solids were recrystallized from a mixed solvent of toluene-hexane