778649-40-4

Upstream product

• 406726-92-9 2,7-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-9-octyl-9H-carbazole 
• 41513-04-6 2-chloro-5-bromonitrobenzene 

Downstream Products

• 778649-44-8 N-octyl-3,6-dibromo-2,7-bis(4'-chloro-2'-aminophenyl)carbazole 
• 778649-42-6 N-octyl-3,6-dibromo-2,7-bis(4'-chloro-2'-nitrophenyl)carbazole 

Relevant academic research and scientific papers

Synthesis of diindolocarbazoles by Ullmann reaction: A rapid route to ladder oligo(p-aniline)s

(Chemical Equation Presented) New and facile synthesis of symmetric diindolocarbazoles was developed using the copper-catalyzed Ullmann reaction. The key step is a double-intramolecular cyclization reaction realized on N-alkyl-3,6-dibromo-2,7-bis(2′aminophenyl)carbazole derivatives which offers the desired symmetric ladder oligo(p-aniline)s. Depending upon the nature of the side- and/or end-groups, well-defined thin films and/or semiladder polymers could be obtained. These electroactive ladder oligomers may have great potential in organic electronics.