反应详情

5 g (39 mmol) of α-amino-ε-caprolactam are dissolved in 50 ml of dimethylformamide and 5.5 ml (1 eq) of triethylamine in a 100 ml three-necked flask equipped with a reflux condenser and a thermometer. 4.1 ml (1.5 eq) of 4-fluoronitrobenzene are then run into the reaction mixture, which is subsequently brought to a temperature of 70° C. for 48 hours. The mixture is cooled and is then precipitated from water. An orangy-yellow precipitate is isolated by filtration and is then purified on a silica column (eluent: dichloromethane 95/methanol 5). 2.7 g of a yellow product are obtained, i.e. a final yield of 28%.

1. temperatureThe mixture is cooled
2. customis then precipitated from water
3. customAn orangy-yellow precipitate is isolated by filtration
4. customis then purified on a silica column (eluent: dichloromethane 95/methanol 5)