Synthesis, characterization and catalytic properties of cationic N-heterocyclic carbene silver complexes
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Date
2021
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Abstract
Three new dibenzimidazolium salts bridged by 2-methylenepropane-1,3-diyl group were synthesized. Their dinuclear
N-heterocyclic carbene Ag(I) complexes were prepared by the reactions of these salts with $Ag_2
O$. The structures of the synthesized
compounds were defined by nuclear magnetic resonance (NMR), Fourier-transform infrared spectroscopy (FT-IR), elemental analysis,
and LC-MSMS (for complexes) techniques. Stability of the silver complexes was confirmed by 1
H NMR spectroscopy. Catalytic activities
of Ag(I) compounds were tested for three-component coupling reaction of some aldehydes, amines, and phenylacetylene.