反应详情

A mixture of 1,3-dimethyl-1H-quinoxalin-2-one (1 g) and selenium dioxide (1.33 g, 2.1 eq) in dry dioxane (60 mL) was stirred at reflux under nitrogen for 30 min. After cooling, the dark-brown mixture was concentrated under reduced pressure and the residue was purified by FC (AcOEt) to give the title compound as a yellow solid.

1. temperatureat reflux under nitrogen for 30 min
2. temperatureAfter cooling
3. concentrationthe dark-brown mixture was concentrated under reduced pressure
4. customthe residue was purified by FC (AcOEt)