反应详情

温度

75 °C

2-Methoxy-4-nitro-benzonitrile (500 mg, 2.81 mmol) was suspended into 4 mL AcOH/EtOAc (1:1) and the resulting mixture was heated to 75° C. to give a clear solution. Fe powder (313 mg, 5.61 mmol, 325 Mesh) was added and the mixture was stirred for 30 min, after which additional Fe powder (313 mg, 5.61 mmol, 325 Mesh) was introduced. The mixture was stirred at 75° C. for an additional 30 min, and then cooled to rt and filtered, eluting with EtOAc. The filtrate was concentrated in vacuo, re-dissolved in EtOAc, filtered (eluting with EtOAc) and concentrated. Purification was achieved by silica gel flash chromatography with 0 to 10% MeOH in CH2Cl2 to give compound 848A as a tan solid.

1. customto give a clear solution
2. stirringThe mixture was stirred at 75° C. for an additional 30 min
3. temperaturecooled to rt
4. filtrationfiltered
5. washeluting with EtOAc
6. concentrationThe filtrate was concentrated in vacuo
7. dissolutionre-dissolved in EtOAc
8. filtrationfiltered
9. wash(eluting with EtOAc)
10. concentrationconcentrated
11. customPurification