Quinoline-2,4(1H,3H)-dione → HCID 69378860, compound

Participants

Reaction Steps

5.0 g of [1,1′]biisoindolylidene-3,3′-diimine and 14.9 g of 1H-quinoline-2,4-dione are stirred in a mixture of 90 ml of NMP and 10 ml of glacial acetic acid at reflux for 6 hours. After cooling to room temperature the suspension is filtered and the filter product is washed with ethanol and then water and dried at 60° C. This gives 6.2 g (59%) of a virtually black powder of a compound of the following formula

Provenance & Evidence