反应详情

10 mmol of 3-acetyl-4-nitro-bromobenzene was placed in a 100 mL two-neck round-bottomed flask and dissolved in 30 mL of a solvent (ether), and then sodium borohydride was slowly added dropwise thereto in an ice bath. The reaction mixture was stirred at room temperature for 2 hours. After the completion of the reaction was confirmed by TLC, 5 mL of water was added to terminate the reaction and the precipitate was filtered off. The filtrate was washed twice with 30 mL of a sodium chloride solution, dried over anhydrous sodium sulfate, distilled under reduced pressure and purified by silica gel column chromatography (hexane/EtOAc=2/1) to obtain the desired 1-(5-bromo-2-nitrophenyl)ethanol as a yellow oil (71%).

1. additionwas added
2. customto terminate
3. customthe reaction
4. filtrationthe precipitate was filtered off
5. washThe filtrate was washed twice with 30 mL of a sodium chloride solution
6. dry with materialdried over anhydrous sodium sulfate
7. distillationdistilled under reduced pressure
8. custompurified by silica gel column chromatography (hexane/EtOAc=2/1)