Palladium-catalyzed regio- and chemoselective ortho-benzylation of C-H bond using a functionalizable primary amide directing group: a concise synthesis of dibenzo[b,e]azepin-6-ones

Chem Commun (Camb). 2013 Sep 7;49(69):7623-5. doi: 10.1039/c3cc43835j. Epub 2013 Jul 19.

Abstract

A palladium-catalyzed regio- and chemoselective direct benzylation of primary benzamides with 2-bromobenzyl bromides under a mild basic condition has been developed affording various substituted diarylmethanes in good yields. Furthermore, the directing amide group (-CONH2) was subjected to intramolecular N-arylation with the aryl bromide moiety present in diarylmethanes leading to a concise synthesis of dibenzoazepinones.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amides / chemistry*
  • Azepines / chemistry*
  • Benzamides / chemistry
  • Bromides / chemistry
  • Carbon / chemistry
  • Catalysis
  • Hydrogen / chemistry
  • Palladium / chemistry*
  • Stereoisomerism

Substances

  • Amides
  • Azepines
  • Benzamides
  • Bromides
  • Palladium
  • Carbon
  • Hydrogen