反应详情

温度

30 °C

To a solution of 5-methoxy-2-nitrobenzoic acid (20.0 g, 0.102 mol) in anhydrous THF (200 mL) was added SOCl2 (20 mL), the mixture was refluxed for 4 hours. The solvent was removed under reduced pressure and the residue was dissolved in anhydrous THF (100 mL). The solution was added dropwise to a suspension of NaBH4 (7.70 g, 0.202 mol) in anhydrous THF (100 mL) and DMF (140 mL) at 0° C. over a period of 30 minutes. The mixture was stirred at 30° C. for 3 hours, then quenched with ice-water (100 mL) and basified by 2M NaOH to pH 8. An EtOAc workup was followed by removal of solvent in vacuo and purification by column chromatography (PE/EtOAc=1/1) to give the product (12.0 g, yield 66%).

1. temperaturethe mixture was refluxed for 4 hours
2. customThe solvent was removed under reduced pressure
3. dissolutionthe residue was dissolved in anhydrous THF (100 mL)
4. customquenched with ice-water (100 mL)
5. customAn EtOAc workup was followed by removal of solvent in vacuo and purification by column chromatography (PE/EtOAc=1/1)