Dimethylbarbituric acid → HCID 178481373, compound

Participants

Reaction Steps

10 g of [1,1′]biisoindolylidene-3,3′-diimine and 18.1 g of 1,3-dimethyl-barbituric acid are stirred in a mixture of 160 ml of NMP and 40 ml of glacial acetic acid at reflux for 5 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 14.5 g (70%) of a virtually black powder of a compound of the following formula

Provenance & Evidence