9,10-Phenanthrenedione → 10-[(Benzothiazol-2-yl)azo]phenanthren-9-ol

Participants

Reaction Conditions

Reaction Steps

A reaction flask was loaded with acetic acid (50 ml) and 9,10-phenanthrenequinone (4.2 g), and the temperature was raised to 105° C. with stirring to dissolve 9,10-phenanthrenequinone. To this mixture, 2-hydrazinobenzothiazole (3.3 g) was added in three hours. After stirring at 100 to 110° C. for one hour, the reaction mixture was filtrated. The filtrated crystals were washed with methanol and dried to give intended crystals (3.9 g).

Provenance & Evidence