title: Facile synthesis of indolo[3,2-a]carbazoles via Pd-catalyzed twofold oxidative cyclization.
abstract: A rapid and efficient route has been developed for the synthesis of 9-methoxycarbonylindolo[3,2-a]carbazole derivatives. The key steps in this approach involved an aromatic amination and an oxidative biaryl coupling. Via the present route, indolo[3,2-a]carbazole derivatives are available in 3-4 steps based on commercially available starting materials.
authors.affiliation: Guizhou University, Guiyang, PR China.
authors.forename: Chao
authors.initials: C
authors.lastname: Yang
authors.affiliation: The Key Laboratory of Chemistry for Natural Products of Guizhou Province, Chinese Academy of Sciences, Guiyang, PR China.
authors.forename: Kai
authors.initials: K
authors.lastname: Lin
authors.affiliation: The Key Laboratory of Chemistry for Natural Products of Guizhou Province, Chinese Academy of Sciences, Guiyang, PR China.
authors.forename: Lan
authors.initials: L
authors.lastname: Huang
authors.affiliation: The Key Laboratory of Chemistry for Natural Products of Guizhou Province, Chinese Academy of Sciences, Guiyang, PR China.
authors.forename: Wei-Dong
authors.initials: WD
authors.lastname: Pan
authors.affiliation: The Key Laboratory of Chemistry for Natural Products of Guizhou Province, Chinese Academy of Sciences, Guiyang, PR China.
authors.forename: Sheng
authors.initials: S
authors.lastname: Liu
keywords: N-arylation; cyclization; indolo[3,2-a]carbazole; oxidative biaryl coupling; palladium catalysis