反应详情

A solution of 41 g (0.13 mol) of 6-trifluoroacetamido-7-nitroquinoxaline -2,3(1H,4H)-dione in 300 ml of ethanol and 700 ml of 3 molar hydrochloric acid was refluxed for 3 hours. After the mixture had cooled, the precipitated crude product was filtered off with suction and washed with acetone. Yield: 84%. Melting point >330° C.

1. temperatureAfter the mixture had cooled
2. customthe precipitated crude product
3. filtrationwas filtered off with suction
4. washwashed with acetone