TfOH-Catalyzed Cascade C–H/N–H Chemo-/Regioselective Annulation of Indole-2-carboxamides with Benzoquinones for the Construction of Anticancer Tetracyclic Indolo[2,3-<i>c</i>]quinolinones
作者:Lingkai Kong、Wenyue Tian、Zhiyan Liu、Ting Xu、Haoyue Wen、Zihan Chen、Jin Gao、Li-Ping Bai
DOI:10.1021/acs.joc.2c00598
日期:2022.6.17
An efficient TfOH-catalyzed cascadeC–H/N–H annulation of indole-2-carboxamides with benzoquinones has been developed for the synthesis of tetracyclic indolo[2,3-c]quinolinones. This reaction exhibits excellent chemo-/regioselectivity, achieving functionalization of the C-3 of indole and N–H of the amide moiety to form the new C–C and C–N bonds. Various expected products were synthesized from readily