Synthesis of 6,13-Pentacenequinone

To a beaker add 1.55 g of cyclohexanedione, 3.7 g of phthalaldehyde and 40 mL of ethanol with stirring to this solution a solution made from 1 g of KOH in 20 mL of water is added with stirring after the vigorous reaction takes place stir the mixture for additional 4h. The mixture is cooled down, washed with cold water, ethanol and methanol then dried.


The mixture after stirring

pentacene-6,13-chinone 2

The product


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