反应详情

To a solution of 1,2-dimethyl-5,6-diaminobenzoimidazole in methanol was added 4,4′-dibromo-benzil. The reaction mixture was refluxed for 3 h and cooled to room temperature. The precipitate which formed was filtered and recrystallized from n-butyl alcohol to give the title quinoxaline.

1. temperatureThe reaction mixture was refluxed for 3 h
2. customThe precipitate which formed
3. filtrationwas filtered
4. customrecrystallized from n-butyl alcohol