反应详情

温度

60 °C

In a 150 mL round-bottomed flask, (S)-tert-butyl 2-(4-aminophenyl)morpholine-4-carboxylate (5 g, 18 mmol) was dissolved in dimethylformamide (30 ml). N-Chlorosuccinimide (2.4 g, 18 mmol) was added and the mixture was stirred at 60° C. for 1 h. The reaction mixture was poured into ethyl acetate and extracted with saturated sodium chloride solution. The organic layers were dried over MgSO4 and concentrated in vacuo. The crude material was purified by flash chromatography (silica gel, 100 g, 30% ethyl acetate in heptane) to yield a light yellow solid (4.0 g, 71%) MS (ISP): 313.1 ([{35Cl}M+H]+), 315.1 ([{37Cl}M+H]+).

1. extractionextracted with saturated sodium chloride solution
2. dry with materialThe organic layers were dried over MgSO4
3. concentrationconcentrated in vacuo
4. customThe crude material was purified by flash chromatography (silica gel, 100 g, 30% ethyl acetate in heptane)