反应详情

温度

100 °C

Potassium carbonate (4.82 g, 34.9 mmol) was added to a mixture of 2-chloronicotinic acid (5.0 g, 31.7 mol), benzylamine (3.47 ml, 31.7 mmol) and copper (I) bromide (450 mg, 3.17 mmol) in N,N-dimethylformamide (50 ml), and the reaction heated at 100° C. for 2 hours, then cooled. The resulting solid was filtered off and the filtrate evaporated under reduced pressure. The residue was partitioned between 4N sodium hydroxide solution (25 ml) and dichloromethane (25 ml) and the layers separated. The organic solution was extracted with water (2×), and the combined aqueous solutions, neutralised using concentrated hydrochloric acid. The resulting solid was filtered off, washed with cold water and dried in vacuo at 50° C., to afford the title compound, 1.6 g.

1. temperaturecooled
2. filtrationThe resulting solid was filtered off
3. customthe filtrate evaporated under reduced pressure
4. customThe residue was partitioned between 4N sodium hydroxide solution (25 ml) and dichloromethane (25 ml)
5. customthe layers separated
6. extractionThe organic solution was extracted with water (2×)
7. filtrationThe resulting solid was filtered off
8. washwashed with cold water
9. customdried in vacuo at 50° C.