反应详情

温度

90 °C

To 5.0 parts of 5-nitro-2,3-dimethyl-1,4,4a,9a-tetrahydroanthraquinone there was added 100 parts of water and then, with stirring at 90°C, 20 parts of a 10 wt % aqueous sodium sulfide. The reaction mixture thus formed was maintained at 90° - 95°C for 1 hour and, after cooled to 25°C, filtered to recover crystals. The crystals were washed with water and dried under reduced pressure to obtain 4.5 parts of 5-amino-2,3-dimethylanthraquinone of a melting point of 222°C.

1. customThe reaction mixture thus formed
2. temperaturewas maintained at 90° - 95°C for 1 hour
3. temperatureafter cooled to 25°C
4. filtrationfiltered
5. customto recover crystals
6. washThe crystals were washed with water
7. customdried under reduced pressure