The natural product lepidiline A as an N-heterocyclic carbene ligand precursor in complexes of the type [Ir(cod)(NHC)PPh3)]X : synthesis, characterisation, and application in hydrogen isotope exchange catalysis

Cochrane, Alison R. and Kennedy, Alan R. and Kerr, William J. and Lindsay, David and Reid, Marc and Tuttle, Tell (2020) The natural product lepidiline A as an N-heterocyclic carbene ligand precursor in complexes of the type [Ir(cod)(NHC)PPh3)]X : synthesis, characterisation, and application in hydrogen isotope exchange catalysis. Catalysts, 10 (2). 161. ISSN 2073-4344 (https://doi.org/10.3390/catal10020161)

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Abstract

A range of iridium(I) complexes of the type [Ir(cod)(NHC)PPh3)]X are reported, where the N-heterocyclic carbene (NHC) is derived from the naturally-occurring imidaozlium salt, Lepidiline A (1,3-dibenzyl-4,5-dimethylimidazolium chloride). A range of complexes were prepared, with a number of NHC ligands and counter-ions, and various steric and electronic parameters of these complexes were evaluated. The activity of the [Ir(cod)(NHC)PPh3)]X complexes in hydrogen isotope exchange reactions was then studied, and compared to established iridium(I) complexes.

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