Visible-Light-Irradiated Cascade Reaction of Indole-Tethered Alkenes to Access Tetracyclic Tetrahydro-γ-carbolines
作者:Haibo Mei、Aiyao Liu、Jingrui He、Yingjie Yu、Jianlin Han
DOI:10.1021/acs.orglett.2c00626
日期:2022.4.15
esters, affording an unknown type of tetracyclic tetrahydro-γ-carboline derivative in up to 90% yields. Mechanistic studies suggest that the reaction proceeds with tetrahydro-γ-carboline as a key intermediate. The reaction tolerates a diverse pool of substrates, which provides an efficientmethod for the construction of tetracyclic tetrahydro-γ-carboline compounds.
Spiro[indoline-3,3′-pyrrolidine] and spiro[indoline-3,3′-piperidine] derivatives were synthesized in a substitution-controlled manner under the catalysis of cationic gold(I) species in the presence of Hantzschester (HEH). The optimal reaction condition was determined by screening, and the functional group tolerances of these two pathways were examined by readily synthetic substrates. The endo and
Electrochemical reaction of indole-tethered alkynes enabling stereoselective construction of tetrahydro-γ-carbolines
作者:Chengting Wang、Jingrui He、Haibo Mei、Jianlin Han
DOI:10.1016/j.tetlet.2023.154664
日期:2023.9
terminal alkynes was designed and applied in a radical reaction with sulfinates to furnish tetrahydro-γ-carbolines under electrochemical conditions. Control experiments and cyclic voltammetry experiments disclose that the process proceeds via the sequence of anodic oxidation of indole moiety of indole-tethered alkyne, intramolecular cycloaddition to alkynyl moiety, and coupling with sulfonyl radical. The