反应详情

To a solution of 2-bromo-6-hydroxybenzaldehyde (3.8 g, 18.91 mmol, 1 eq.) in a mixture of THF and MeOH (4/1, 25 mL) was added NaBH4 (1.4 g, 37.81 mmol, 1.5 eq.) at rt portion-wise. Upon the completion of addition, the mixture was continued to stir at rt for 30 min. The mixture was quenched with HCl (4 N) and extracted with EtOAC twice. The combined organic layer was dried over Na2SO4, concentrated, and purified on silica gel using 25% EtOAc/hexanes as eluent to give 3-bromo-2-(hydroxymethyl)phenol (2.3 g, 60%) as a colorless oil.

1. additionUpon the completion of addition
2. customThe mixture was quenched with HCl (4 N)
3. extractionextracted with EtOAC twice
4. dry with materialThe combined organic layer was dried over Na2SO4
5. concentrationconcentrated
6. custompurified on silica gel using 25% EtOAc/hexanes as eluent