反应详情

Bis(trimethylsilyl)acetamide (5 g, 0.024 mole, 6 ml) was added, at room temperature, to a solution of benzyl acrylic acid (2 g, 0.012 mole) and diethyl phosphite (3.3 g, 0.024 moles) in dichloromethane (30 ml). The mixture was stirred at ambient temperature for 30 minutes, concentrated in vacuo at room temperature, and the residue was heated at a bath temperature of 100°-110° for 16 hours. The colorless oil reaction mixture was dissolved in ethyl acetate and extracted with 5% sodium bicarbonate (pH 9-10). The aqueous alkaline solution was washed with ether and acidified to a pH of 1-2 with concentrated hydrochloric acid. The colorless oil that separated was extracted into ethyl acetate, washed with brine, dried over anhydrous magnesium sulfate and concentrated in vacuo to give a colorless oil (3.6 g).

1. concentrationconcentrated in vacuo at room temperature
2. temperaturethe residue was heated at a bath temperature of 100°-110° for 16 hours
3. customThe colorless oil reaction mixture
4. extractionextracted with 5% sodium bicarbonate (pH 9-10)
5. washThe aqueous alkaline solution was washed with ether
6. customThe colorless oil that separated
7. extractionwas extracted into ethyl acetate
8. washwashed with brine
9. dry with materialdried over anhydrous magnesium sulfate
10. concentrationconcentrated in vacuo