Bromine → 6-Amino-5-bromo-1,2-dihydro-2,2-dimethyl-3-(4h)-quinoxalinone hydrobromide
Reaction equation
[NH2:1][C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][CH:11]=1)[NH:8][C:7]([CH3:13])([CH3:12])[C:6](=[O:14])[NH:5]2.[Br:15]Br>C(O)(=O)C>[BrH:15].[NH2:1][C:2]1[C:3]([Br:15])=[C:4]2[C:9](=[CH:10][CH:11]=1)[NH:8][C:7]([CH3:12])([CH3:13])[C:6](=[O:14])[NH:5]2Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
A solution of 6-amino-1,2-dihydro-2,2-dimethyl-3-(4H)-quinoxalinone (250 mg, 1.31 mmol) in glacial acetic acid (4 ml) is cooled using a water bath. Bromine (210 mg, 1.31 mmol) in acetic acid (0.25 ml) is added dropwise over a 5 minute period. The mixture is stirred at room temperature for 4 hours and the resulting precipitate is collected by vacuum filtration. The title compound is obtained in pure form after drying in vacuo.