反应详情

D-Alaninol hydrochloride (500 mg, 6.66 mmol) (Aldrich) was dissolved in anhydrous dimethylformamide (10 mL) (Aldrich). Imidazole (544 mg, 8 mmol) (Aldrich) and tert-butyldimethylsilyl chloride (1.05 g, 7 mmol) (Aldrich) were successively added at room temperature. This mixture was stirred at room temperature for 2 hours, quenched with a solution of water-saturated aqueous sodium bicarbonate solution (5:1, 15 mL) and extracted with ethyl acetate. The organic layer was washed with water and brine, dried over sodium sulfate, and concentrated under reduce pressure to yield (R)-2-(tert-butyl-dimethyl-silanyloxy)-1-methyl-ethylamine as a colorless oil. (Yield 852 mg, 68%).

1. customquenched with a solution of water-saturated aqueous sodium bicarbonate solution (5:1, 15 mL)
2. extractionextracted with ethyl acetate
3. washThe organic layer was washed with water and brine
4. dry with materialdried over sodium sulfate
5. concentrationconcentrated