Well-Defined NNS-Mn Complex Catalyzed Selective Synthesis of C-3 Alkylated Indoles and Bisindolylmethanes Using Alcohols

J Org Chem. 2022 Mar 18;87(6):3989-4000. doi: 10.1021/acs.joc.1c02702. Epub 2022 Mar 8.

Abstract

Herein, we demonstrated Mn-catalyzed selective C-3 functionalization of indoles with alcohols. The developed catalyst can also furnish bis(indolyl)methanes from the same set of substrates under slightly modified reaction conditions. Mechanistic studies reveal that the C-3 functionalization of indoles is going via a borrowing hydrogen pathway. To highlight the practical utility, a diverse range of substrates including nine structurally important drug molecules are synthesized. Furthermore, we also introduced a one-pot cascade strategy for synthesizing C-3 functionalized indoles directly from 2-aminophenyl ethanol and alcohol.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Catalysis
  • Ethanol
  • Indoles* / chemistry
  • Methane* / chemistry

Substances

  • Indoles
  • Ethanol
  • Methane