反应详情

3-Nitrobenzene-1,2-diamine (1.0 g) was dissolved in ethanol (90 mL) and 5N hydrochloric acid (24 mL), and to this solution was added 2,4-pentanedione (1.3 g). The mixture was heated for 3 hours under reflux, cooled down to room temperature and concentrated. To this concentrate was added ethyl acetate, and the mixture was washed successively with saturated aqueous sodium bicarbonate and water, and dried over sodium sulfate to give the title compound (1.1 g).

1. temperatureThe mixture was heated for 3 hours
2. temperatureunder reflux
3. concentrationconcentrated
4. additionTo this concentrate was added ethyl acetate
5. washthe mixture was washed successively with saturated aqueous sodium bicarbonate and water
6. dry with materialdried over sodium sulfate