反应详情

4-(p-Tolylamino)butanenitrile (13.23 g, 75.929 mmol) was dissolved in ethanol (189.8 mL). After adding diethyl oxalate (10.3 mL, 75.929 mmol) and then adding sodium ethoxide (34.0 mL, 91.115 mmol) to the resultant reaction mixture, reaction was carried out under reflux for 2 days. The reaction solution was cooled to room temperature and the concentrated solution was filtered. A target compound (8.94 g, 39.167 mmol, 51.6%) was yielded as yellow solid.

1. temperatureunder reflux for 2 days
2. filtrationthe concentrated solution was filtered