反应详情

温度

70 °C

50 Parts of 2,3-dimethyl-5-hydroxylaminoanthraquinone was added to a mixture of 600 parts of methyl alcohol, 200 parts of water and 60 parts of a 35 % aqueous hydrochloric acid and the mixture was heated with stirring to 70°C, then added thereto 15 parts of zinc dust little by little over 1 hour. The reaction mixture was maintained at 70°C for additional 3 hours and then cooled to 25°C and filtered. The residue was washed with water and dried to obtain 42.8 parts of 2,3-dimethyl-5-aminoanthraquinone of a purity of 95 %.

1. temperaturethe mixture was heated
2. additionadded
3. temperatureThe reaction mixture was maintained at 70°C for additional 3 hours
4. temperaturecooled to 25°C
5. filtrationfiltered
6. washThe residue was washed with water
7. customdried