Pyrrolo indole-4,8-dione ring

In addition to carbazoles, pyrrole ring-containing PAHs such as 7/f-indolo[2,3-clquinoline 9,1 l//-indolo[3,2-c]isoquinoline 11, 9/7-pyrrolo[2,3- 4,5-c ]dipyridine 13a, 9/7-pyrido[2,3- ]indole 13b, benzo[a]pyrrolo[3,4-c]carbazole-l,3-(2//,8//)-dione 15, and 6//-indolo[3,2-fe]benzo[fe]thiophene 17 were accessible by intramolecular direct arylation strategy (Scheme 22.4) [10]. The cyclization of 3-(2-bromophenylamino)quinoline 8 and 4-(2-bromophenylamino)isoquinoline 10 was catalyzed by Pd(PPh3)2Cl2 in the presence of NaOAc in DMA and reached to... 

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