Potassium Carbonate → HCID 59514412, compound

Participants

Reaction Conditions

Reaction Steps

To a three-necked round-bottomed flask equipped with a thermometer and a Dean-Stark apparatus was charged 6-amino-2-(2,4-dimethylphenyl)benzo[de]isoquinoline-1,3-dione (4.69 g), potassium acetate (1.443 g), potassium carbonate (2.032 g), cupric acetate (0.1262 g), cupric iodide (0.120 g), and ortho-dichlorobenzene (45 ml) to obtain a mixture. The mixture was heated to 120° C. in about 10 minutes. After being maintained at 120° C. for about 30 minutes, 6-bromo-3-methyl-3H-naphtho[1,2,3-de]quinoline-2,7-dione (5 g) and ortho-dichlorobenzene (45 ml) were added to the mixture. Then the temperature of the resulting reaction mixture was raised to 165° C. over a period of about 1.5 hours. After being maintained at this temperature for about 4 hours, formation of a red solid was observed. A portion of the reaction mixture was spotted on a TLC plate and viewed under ultraviolet radiation to monitor the disappearance of the starting materials 6-amino-2-(2,4-dimethyl)phenyl-benzo[de]isoquinoline-1,3-dione and 6-bromo-3-methyl-3H-naphtho[1,2,3-de]quinoline-2,7-dione. After being heated for 2 more hours at the same temperature, TLC analysis of the reaction mixture indicated the absence of both the starting materials. The reaction mixture was then cooled, poured into 175 ml of methanol, filtered, and the filter cake was washed with 2 to 3 100 ml portions of methanol to give the desired product in a yield of 7.2 g.

Provenance & Evidence