A general method for the synthesis of 3,5-diarylcyclopentenones via friedel-crafts acylation of vinyl chlorides

J Org Chem. 2009 Jul 17;74(14):5100-3. doi: 10.1021/jo900696k.

Abstract

A general approach for the synthesis of 3,5-diarylcyclopentenones was developed. Key aspects of this approach are the intramolecular Friedel-Crafts-type cyclization of vinyl chlorides and subsequent Pd-catalyzed cross-coupling reactions. The requisite vinyl chloride-bearing arylacetic acid precursors are readily available by straightforward alkylation of arylacetic acid esters and undergo cyclization to yield 3-chloro-5-aryl-2-cyclopentenones when treated with AlCl(3). The vinylogous acid chloride functionality present in these immediate products allows for further elaboration via Pd-catalyzed cross-coupling chemistry, leading to a diverse array of products.

MeSH terms

  • Acylation
  • Cyclization
  • Molecular Structure
  • Pentanones / chemical synthesis*
  • Pentanones / chemistry*
  • Vinyl Chloride / chemistry*

Substances

  • Pentanones
  • 1-pentene-3-one
  • Vinyl Chloride