反应详情

2-Bromoacetophenone (1 g) was dissolved in tetrahydrofuran (8 ml), and a solution of borane-dimethylamine (326 mg) in tetrahydrofuran (6 ml) was added thereto at room temperature. After the reaction mixture was stirred at room temperature for 60 hours, methanol (1 ml) and 1 M hydrochloric acid aqueous solution (5 ml) were added thereto, and the mixture was extracted with diethyl ether. The organic layer was washed with saturated brine, and dried over anhydrous magnesium sulfate. After removing the solvent by distillation from the organic layer, the residue was purified by silica gel column chromatography to obtain the title compound from a fraction eluted with hexane-ethyl acetate (5:1).

1. customat room temperature
2. extractionthe mixture was extracted with diethyl ether
3. washThe organic layer was washed with saturated brine
4. dry with materialdried over anhydrous magnesium sulfate
5. customAfter removing the solvent
6. distillationby distillation from the organic layer
7. customthe residue was purified by silica gel column chromatography