Synthesis of 4-vinylindoles using ruthenium-catalyzed ring-closing enyne metathesis

J Org Chem. 2013 Apr 5;78(7):3464-9. doi: 10.1021/jo400099x. Epub 2013 Feb 27.

Abstract

The selective synthesis of substituted 4-vinylindoles by the ring-closing enyne metathesis (RCEM)/dehydration sequence is reported. In contrast with many known methods in which a pyrrole ring is constructed onto a functionalized benzene precursor, this method enables the construction of a benzene ring onto a pyrrole precursor. The RCEM/tautomerization sequence for the synthesis of 7-hydroxy-4-vinylindole is also presented as an application of this method.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Alkynes / chemistry*
  • Catalysis
  • Cyclization
  • Indoles / chemical synthesis*
  • Indoles / chemistry
  • Molecular Structure
  • Ruthenium / chemistry*
  • Vinyl Compounds / chemical synthesis*
  • Vinyl Compounds / chemistry

Substances

  • Alkynes
  • Indoles
  • Vinyl Compounds
  • Ruthenium