反应详情

温度

50 °C

A mixture of 5.00 g (29.3 mmol) of (4-chlorophenyl)acetic acid, 5.23 g (43.9 mmol) of thionyl chloride and 50 ml of toluene was stirred at 50° C. for 30 minutes and then 80° C. for 2.5 hours, cooled and concentrated under reduced pressure. The residue was added to a mixture of 5.18 g (28.5 mmol) 2-(3,4-dimethoxyphenyl)ethylamine, 3.46 g (34.2 mmol) of triethylamine and 50 ml tetrahydrofuran at 0° C. and kept at 0° C. for 30 minutes and at room temperature for 3 hours. Water and ethyl acetate were added to the reaction mixture and precipitated solid was collected with filtration. The obtained solid was dried to give 5.75 g of N-[2-(3,4-dimethoxyphenyl)ethyl]-2-(4-chlorophenyl) acetamide.

1. wait80° C. for 2.5 hours
2. temperaturecooled
3. concentrationconcentrated under reduced pressure
4. waitkept at 0° C. for 30 minutes and at room temperature for 3 hours
5. customprecipitated solid
6. filtrationwas collected with filtration
7. customThe obtained solid was dried