反应详情

温度

80 °C

To a solution of 2-amino-1-(3-bromo-phenyl)-ethanol (example 33, step 1, 1.34 g) and crude 2-chloro-N-phenyl-acetamide (example 33, step 2, 1.0 g) in acetonitrile (15 mL) was added potassium carbonate (1.03 g). The mixture was heated to 80° C. overnight. A 1M solution of KH2PO4 was added, followed by ethyl acetate. The phases were separated, and the inorganic one was extracted with ethyl acetate (x2). The combined organic layers were washed with brine, dried (Na2SO4) and concentrated in vacuo. Column chromatography (SiO2, CH2Cl2/MeOH 95:5) followed by precipitation from a mixture of diethylether/n-heptane (1:4) gave 2-[2-(3-bromo-phenyl)-2-hydroxy-ethylamino]-N-phenyl-acetamide (0.87 g, 42%) as a white solid, MS: 349.1 (M+H, 1Br)+.

1. customThe phases were separated
2. extractionthe inorganic one was extracted with ethyl acetate (x2)
3. washThe combined organic layers were washed with brine
4. dry with materialdried (Na2SO4)
5. concentrationconcentrated in vacuo
6. customColumn chromatography (SiO2, CH2Cl2/MeOH 95:5) followed by precipitation from a mixture of diethylether/n-heptane (1:4)