Indoxyl-based umpolung strategy for the synthesis of unsymmetrical 3,3′-biindoles
作者:Jing Guo、Jiang Weng、Gong-Bin Huang、Lin-Jie Huang、Albert S.C. Chan、Gui Lu
DOI:10.1016/j.tetlet.2016.10.099
日期:2016.12
3,3′-Bisindoles are known to be important structural motifs found in bioactive natural products, pharmaceuticals, and functional materials. Herein, a novel indoxyl-based approach was established for the synthesis of unsymmetrical 3,3′-biindoles from indoles and indoxyls. This approach generated moderate to excellent yields of the desired products (24 examples, up to 98% yield). The present method features
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.