反应详情

温度

4 °C

In a solution that consists of 2,4-dimethylaniline (12.4 ml, 100 mmol) in 80 ml of concentrated sulfuric acid, it is mixed at 0° C. with 5.0 ml of fuming nitric acid and stirred for 20 minutes at 4° C., and then for 30 minutes at room temperature. The reaction mixture is poured into 600 ml of ice water, and set at a pH of 10 with 5N sodium hydroxide solution. The precipitate is suctioned off, washed with water and dried. 15.72 g (95% of theory) of 2,4-dimethylnitrophenylamine is obtained as a mixture of regioisomers.

1. waitfor 30 minutes at room temperature
2. washwashed with water
3. customdried