Efficient access to azaindoles and indoles

Org Lett. 2006 Jul 20;8(15):3307-10. doi: 10.1021/ol061232r.

Abstract

[Structure: see text] An expedient, catalytic method for the synthesis of diverse azaindoles and indoles, starting from readily available and inexpensive starting materials, is described. Conditions were developed for effective reductive alkylation of electron-deficient o-chloroarylamines, substrates previously viewed as poor partners in this reaction. The derived N-alkylated o-chloroarylamines were elaborated to N-alkylazaindoles and N-alkylindoles via a novel one-pot process comprising copper-free Sonogashira alkynylation and a base-mediated indolization reaction.

MeSH terms

  • Alkylation
  • Aza Compounds / chemical synthesis*
  • Combinatorial Chemistry Techniques*
  • Indoles / chemical synthesis*
  • Molecular Structure

Substances

  • Aza Compounds
  • Indoles