Amido-functionalized N-Heterocyclic carbene ligands and corresponding PalladiumComplexes: Synthesis, characterization and catalytic activity

Add time:07/22/2019    Source:sciencedirect.com

Thirteen amido functionalized N-heterocyclic carbene ligands were synthesized via a simple synthetic procedure. The synthesized ligands were characterized by NMR, FAB-MS and single crystal X-ray analysis, unanimously confirming the proposed structures. Subsequent complexation with a palladium precursor allowed the synthesis of four new complexes. The molecules structures of all four complexes were confirmed by single crystal X-ray diffraction. The catalytic activity of the synthesized ligands and complexes was tested for the Heck alkenylation of aryl iodide readily allowing the synthesis of cinnamic acids esterin yields ranging from 67 to 93% for ligands and 69–95% for complexes while turn-over-numbers of up to 75000 was observed for the complexes.

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