Synthesis of Indolo[2,3-<i>c</i>]carbazole Derivatives by Thermal Electrocyclic Reactions
作者:Jan Bergman、Eric Desarbre
DOI:10.1055/s-1997-3215
日期:1997.5
Thermal electrocyclic reactions have been performed to prepare indolo[2,3-c]carbazole derivatives from 2-substituted 3,3'-biindolyl derivatives. 2-Formyl-3,3'-biindolyl 2 is a very good synthon for such indolocarbazoles.
Synthesis of symmetric and non-symmetric indolo[2,3-c]carbazole derivatives: preparation of indolo[2,3-c]pyrrolo[3,4-a]carbazoles
作者:Eric Desarbre、Jan Bergman
DOI:10.1039/a802852d
日期:——
Symmetric and non-symmetric indolo[2,3-c]carbazoles have been prepared from 3,3′-biindolyls 9a–d by two strategies; step by step, by thermal electrocyclic reaction, or directly. Indolo[2,3-c]pyrrolo[3,4-a]carbazoles 28aa–db, a new class of indolopyrrolocarbazoles, have been obtained in a one step reaction from readily available precursors.