反应详情

A mixture of 3-amino-isonicotinic acid (613 mg, 4.44 mmol), methanol (15 mL) and thionyl chloride (0.7 mL, 8.88 mmol) was stirred at reflux for 3 days. The volatiles were removed under reduced pressure and the residue stirred with diethylether (20 mL) and saturated solution of sodium hydrogenocarbonate (40 mL). The phases were separated and the aqueous phase extracted with diethylether (2×20 mL). The combined organic phases were dried over sodium sulfate and evaporated to dryness affording 400 mg of the title compound.

1. temperatureat reflux for 3 days
2. customThe volatiles were removed under reduced pressure
3. stirringthe residue stirred with diethylether (20 mL) and saturated solution of sodium hydrogenocarbonate (40 mL)
4. customThe phases were separated
5. extractionthe aqueous phase extracted with diethylether (2×20 mL)
6. dry with materialThe combined organic phases were dried over sodium sulfate
7. customevaporated to dryness