N-Heterocyclic Carbene Catalysis via the α,β-Unsaturated Acyl Azolium

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Abstract

First reported less than a decade ago, the α,β-unsaturated acyl azolium has emerged as a central reactive intermediate for reaction discovery using N-heterocyclic carbene catalysis. In this Perspective, an introduction to the four main reactivity patterns accessible from this intermediate is provided. The Perspective is handled in a largely chronological fashion, with an emphasis on alternate approaches to the key intermediate and first-in-class reaction cascades. Finally, a brief discussion of emerging trends in this field of catalysis is presented. Although not exhaustive, the Perspective provides an overview of this active area of research and serves as a guide for future investigations.

Original languageEnglish
Pages (from-to)2583-2596
Number of pages14
JournalACS Catalysis
Volume7
Issue number4
DOIs
Publication statusPublished - 7 Apr 2017

Keywords

  • enantioselective catalysis
  • Lewis-base catalysis
  • N-heterocyclic carbene catalysis
  • organocatalysis
  • reaction cascade

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