Synthesis of <i>N</i>-Fused Polycyclic Indoles via Ligand-Free Palladium-Catalyzed Annulation/Acyl Migration Reaction
作者:Zhan Dong、Xiao-Wen Zhang、Weishuang Li、Zi-Meng Li、Wen-Yan Wang、Yan Zhang、Wei Liu、Wen-Bo Liu
DOI:10.1021/acs.orglett.8b04128
日期:2019.2.15
An efficient synthesis of N-fused polycyclic indoles by a palladium-catalyzed annulation/acylmigration cascade reaction is described. The reaction is ligand-free, scalable, and provides access to a diverse range of useful indole scaffolds from readily available starting materials. Supporting mechanistic studies indicate that the reaction likely proceeds via an intramolecular α-arylation mechanism
Cu-Catalyzed Arylation/Acyl Migration Cascade Reaction of Enaminones: Access to N-Fused Polycyclic and 2,3-Disubstituted Indoles
作者:Weishuang Li、Zhan Dong、Yan Zhang、Zhen Zeng、Muhammad Usman、Wen-Bo Liu
DOI:10.1021/acs.joc.9b00866
日期:2019.6.21
polycyclic and 2,3-disubstitutedindoles by copper-catalyzed direct annulation/acyl migration reaction of enaminones is reported. This strategy features cheap and low loading of the catalyst/ligand, readily available starting materials, and good functional group compatibilities. Notably, allyl-containing substrates are also tolerated, which allows the downstream derivatization toward indole alkaloids.