反应详情

温度

3 °C

1-(4-Chlorophenyl)cyclobutanecarboxylic acid (6.63 g, 31.492 mmol) and 2-(4-methoxyphenyl)ethanamine (5.00 g, 33.067 mmol) were treated with dichloromethane (470 mL). The suspension was cooled to 3° C. and N,N-dimethylpyridin-4-amine (4.04 g, 33.1 mmol) and N-[3-(dimethylamino)propyl]-N′-ethylcarbodiimide hydrochloride (6.35 g, 33.1 mmol) were added. The reaction mixture was allowed to warm to room temperature and was stirred over night. The reaction mixture was washed successively with 2N hydrochloric acid (2×) and water (2×). The organic layer was dried (MgSO4) and concentrated in vacuo. The crude product was purified by flash-chromatography (silica, dichloromethane:methanol=9:1) to give a pale yellow solid. Yield: 10.58 g (30.8 mmol, 98%).

1. temperatureto warm to room temperature
2. washThe reaction mixture was washed successively with 2N hydrochloric acid (2×) and water (2×)
3. dry with materialThe organic layer was dried (MgSO4)
4. concentrationconcentrated in vacuo
5. customThe crude product was purified by flash-chromatography (silica, dichloromethane:methanol=9:1)
6. customto give a pale yellow solid