Transition-metal-free α-arylation of β-keto amides via an interrupted insertion reaction of arynes

Org Lett. 2012 Sep 7;14(17):4686-9. doi: 10.1021/ol302180v. Epub 2012 Aug 28.

Abstract

Direct α-arylation reactions of secondary β-keto amides with arynes, generated by fluoride-induced elimination of ortho-silyl aryltriflates, are described. The transformation proceeds via an interrupted insertion reaction of arynes and leads to densely functionalized aromatic compounds exhibiting a chiral 'all carbon' quaternary center under transition-metal-free conditions. An organocatalytic asymmetric version of the reaction also proved possible, affording the proof of concept that arynes can be involved in enantioselective transformations.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amides / chemistry*
  • Benzene Derivatives / chemistry*
  • Catalysis
  • Combinatorial Chemistry Techniques
  • Molecular Structure
  • Stereoisomerism
  • Transition Elements

Substances

  • Amides
  • Benzene Derivatives
  • Transition Elements
  • benzyne