Issue 8, 2015

Ruthenium complexes with an N-heterocyclic carbene NNC-pincer ligand: preparation and catalytic properties

Abstract

1-Methyl-3-(2-((pyridin-2-ylmethylene)amino)ethyl)-1H-imidazol-3-ium bromide was prepared and used as an N-heterocyclic carbene NNC-pincer ligand precursor. Depending on the coordination strategy, a monometallic [Ru(NNC)(CO3)(PPh3)] complex, or the [Ru(μ-Cl)(NNC)]2(2Cl) dimer, was obtained. A di-silver complex in which two ligands are monocoordinated to the metal center through the NHC groups was also obtained and characterised. The dimetallic ruthenium complex reacts with alcohols yielding a monohydride species. The preliminary studies on the catalytic activity of the ruthenium dimer indicate that the complex is active in the reduction of ketones and aldehydes under transfer hydrogenation conditions.

Graphical abstract: Ruthenium complexes with an N-heterocyclic carbene NNC-pincer ligand: preparation and catalytic properties

Supplementary files

Article information

Article type
Research Article
Submitted
23 ⵉⴱⵔ 2015
Accepted
29 ⵎⴰⵢ 2015
First published
01 ⵢⵓⵏ 2015

Org. Chem. Front., 2015,2, 936-941

Author version available

Ruthenium complexes with an N-heterocyclic carbene NNC-pincer ligand: preparation and catalytic properties

C. Mejuto, M. A. García-Eleno, G. Guisado-Barrios, D. Spasyuk, D. Gusev and E. Peris, Org. Chem. Front., 2015, 2, 936 DOI: 10.1039/C5QO00137D

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