In conclusion. it has been shown that the readily available dimer J& of 3-bromod- dimethylamino-1-azafulvene. serves as a formal equivalent of either 4-lithio-or 4.5- dilithiopyrrole-2-carboxaldehyde, and as such, it can provide access to an irmnense variety of pyrrole-2-carboxaldehyde derivatives, with an efficiency and economy of steps unmatched by any published procedure".
![2,7-dibromo-N5,N5,N10,N10-tetramethyl-5H,10H-dipyrrolo[1,2-a:1',2'-d]pyrazine-5,10-diamine Structure](https://image.chemsrc.com/caspic/140/117720-03-3.png)
![5,10-bis(dimethylamino)-2,7-dimethyl-5H,10H-dipyrrolo[1,2-a:1',2'-d]pyrazine-3,8-dicarbaldehyde Structure](https://image.chemsrc.com/caspic/412/117720-09-9.png)
