1-Amino-4-hydroxyanthraquinone → Anthraquinone

Participants

Reaction Steps

A solution prepared by adding 0.005 part of methoquinone to 24 parts of 1-amino-4-hydroxy-anthraquinone and dissolving the obtained mixture in 900 parts of dried chloroform was cooled with ice in a nitrogen atmosphere. Then, 18 parts of isopropenyl isocyanate was dropped into the resulting solution. After the completion of the dropping, the obtained mixture was stirred under cooling with ice for 3 hours to complete a reaction. Then, the obtained reaction mixture was freed from the chloroform by distillation and recrystallized from ethanol to give a yellow polymerizable anthraquinone dye E. The anthraquinone dye E is represented by the below chemical formula (VI). ##STR6##

Provenance & Evidence