反应详情

9.2 g (62.9 mmol) of N-(2-propynyl) 1,2-phenylenediamine and 12.1 g (69.2 mmol) of diethyl ketomalonate were dissolved in toluene (100 mL), and the solution was refluxed for 3 hours. After confirming the completion of the reaction, the reaction solution was concentrated under reduced pressure, and the solid matter thus obtained was washed with diisopropyl ether, to obtain 15.0 g (yield: 93%) of ethyl 2-oxo-1-(2-propynyl)-1,2-dihydroquinoxaline-3-carboxylate as a white powder.

1. temperaturethe solution was refluxed for 3 hours
2. customthe completion of the reaction
3. concentrationthe reaction solution was concentrated under reduced pressure
4. customthe solid matter thus obtained
5. washwas washed with diisopropyl ether