反应详情

To a solution of 2-((tert-butyldimethylsilyl)oxy)ethanamine (WO 0007985: 24.4 g) in THF (300 mL) was added benzoyl isothiocyanate (22.7 g), and the mixture was mixed for 2 hours. The reaction solution was concentrated, and the residue was dissolved in methanol (150 mL). To the resulting solution were added potassium carbonate (5.0 g) and water (50 mL), and the mixture was mixed for 2 hours. The insolubles were filtered off, and the filtrate was concentrated. The residue was dissolved in ethyl acetate, sequentially washed with 1 N hydrochloric acid, a saturated aqueous sodium bicarbonate solution and saturated brine, and then dried over anhydrous sodium sulfate. The solvent was distilled off to give the title compound (27.7 g) as a colorless oily matter.

1. additionthe mixture was mixed for 2 hours
2. concentrationThe reaction solution was concentrated
3. dissolutionthe residue was dissolved in methanol (150 mL)
4. additionTo the resulting solution were added potassium carbonate (5.0 g) and water (50 mL)
5. additionthe mixture was mixed for 2 hours
6. filtrationThe insolubles were filtered off
7. concentrationthe filtrate was concentrated
8. dissolutionThe residue was dissolved in ethyl acetate
9. washsequentially washed with 1 N hydrochloric acid
10. dry with materiala saturated aqueous sodium bicarbonate solution and saturated brine, and then dried over anhydrous sodium sulfate
11. distillationThe solvent was distilled off