Dissymmetric gold(i) N-heterocyclic carbene complexes: A key unexpected structural parameter for highly efficient catalysts in the addition of alcohols to internal alkynes

Mohamed Bouhrara, Erwan Jeanneau, Laurent Veyre, Christophe Copéret, Chloé Thieuleux

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Gold(i) N-heterocyclic carbene complexes (Au-NHC) with symmetric (bis-benzyl, -propyl and -mesityl substituents) and dissymmetric (mesityl and alkyl - benzyl or propyl - substituents) NHC ligands were synthesized and tested as catalysts for the addition of methanol to 3-hexyne, as a representative internal alkyne. While symmetric ones - bis-alkyl (propyl or benzyl) or bis-mesityl systems - displayed low activity, dissymmetric Au-NHC systems with one alkyl (benzyl or propyl) and one mesityl groups on the NHC unit were unexpectedly highly active with rates and turnover numbers up to 294000 h -1 and 800000 mol.molAu-1.

Original languageEnglish
Pages (from-to)2995-2999
Number of pages5
JournalDalton Transactions
Volume40
Issue number12
DOIs
Publication statusPublished - Mar 28 2011

ASJC Scopus subject areas

  • Inorganic Chemistry

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