We know from [3, 4] that the diamides of diimidazopyrazine-5, 10-dione-l, 6-dicarboxylic acid are easily broken down upon reacting with bases to the corresponding amino acids, amido esters, and diamides. In a similar manner we split compounds (1-VIII) with hydrazine hydrate to the amido hydrazides (IX-XVI) which formed hydrazones (XVII-XXIV) upon condensation with 5-nitrofurfurol.
![5,10-dioxo-N1,N6-diphenyl-5,10-dihydrodiimidazo[1,5-a:1',5'-d]pyrazine-1,6-dicarboxamide Structure](https://image.chemsrc.com/caspic/338/89562-34-5.png)
![5,10-dioxo-5H,10H-diimidazo[1,5-a:1',5'-d]pyrazine-1,6-dicarbonyl dichloride Structure](https://image.chemsrc.com/caspic/428/59157-06-1.png)
