反应详情

To a suspension of sodium hydride (120 mg, 5 mmole) in tetrahydrofuran(10 ml), a solution of 2-amino-3-nitro-6-chloropyridine (870 mg, 5 mmole) in 20 ml of tetrahydrofuran (20 ml) was added. The reaction mixture was stirred at room temperature for 30 min. A solution of acetic anhydride (377 μl, 6 mmole) in tetrahydrofuran (10 ml) was added and stirred at room temperature overnight. The reaction mixture was quenched with water and concentrated under reduced pressure. The crude product was dissolved in dichloromethane and washed with brine. The organic layer was dried with sodium sulfate and then concentrated under vacuo. The crude was purified by flash chromatography, eluting 78% hexane: 22% ethyl acetate to give a yellow product (88 mg).

1. stirringstirred at room temperature overnight
2. customThe reaction mixture was quenched with water
3. concentrationconcentrated under reduced pressure
4. dissolutionThe crude product was dissolved in dichloromethane
5. washwashed with brine
6. dry with materialThe organic layer was dried with sodium sulfate
7. concentrationconcentrated under vacuo
8. customThe crude was purified by flash chromatography
9. washeluting 78% hexane