| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 64663 | Journal of Molecular Catalysis A: Chemical | 2016 | 10 Pages |
•Synthesis and characterization of PEPPSI-type complexes bearing small NHC ligand.•High catalytic activity of PEPPSI-type complexes in Suzuki and Hiyama reactions in ethylene glycol.•Spectroscopic evidence of labile character of N-ligands coordinated to palladium.•XPS and TEM identification of Pd(0) and Pd(0) NPs formed under reaction conditions.•High and constant yield of non-symmetric biphenyl in ten subsequent runs.
Palladium PEPPSI-type complexes with small NHC ligand were applied as catalyst precursors in cross-coupling reactions forming a wide range of non-symmetric biaryls with high yields. The recycling of the in situ formed palladium composite was successfully performed in 10 subsequent runs. Mechanistic studies confirmed a labile character of the N-ligands coordinated to palladium by ligand exchange monitored using 1H NMR. The formation of Pd(0) NPs during the catalytic process was evidenced by TEM.
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