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
Externally publishedYes

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Alkynes
Gold
Methanol
Alcohols
Ligands
Catalysts
carbene

ASJC Scopus subject areas

  • Inorganic Chemistry

Cite this

Dissymmetric gold(i) N-heterocyclic carbene complexes : A key unexpected structural parameter for highly efficient catalysts in the addition of alcohols to internal alkynes. / Bouhrara, Mohamed; Jeanneau, Erwan; Veyre, Laurent; Copéret, Christophe; Thieuleux, Chloé.

In: Dalton Transactions, Vol. 40, No. 12, 28.03.2011, p. 2995-2999.

Research output: Contribution to journalArticle

Bouhrara, Mohamed ; Jeanneau, Erwan ; Veyre, Laurent ; Copéret, Christophe ; Thieuleux, Chloé. / Dissymmetric gold(i) N-heterocyclic carbene complexes : A key unexpected structural parameter for highly efficient catalysts in the addition of alcohols to internal alkynes. In: Dalton Transactions. 2011 ; Vol. 40, No. 12. pp. 2995-2999.
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