Synthesis, characterization and catalytic activity of nickel NHC complexes

Add time:07/29/2019    Source:sciencedirect.com

Several new cyclopentadienylnickel complexes were synthesized and characterized. All the complexes exhibited catalytic activity in Suzuki–Miyaura cross-coupling reaction with conversion rates from 10 to 80% and very high selectivity. The catalytic activity of the complexes strongly depended on their composition and structure. It was shown that ionic complexes are better catalysts than their covalent analogues; increased electron density in the cyclopentadienyl ligand improved their catalytic activity; bromide complexes provided better results than chloride ones.Two CpNi(NHC)Cl complexes were tested as initiators in the oligomerization of ethyl acetate carbene confirming our earlier observation that N-heterocyclic carbene from the catalyst precursor was incorporated into the oligomer chain.

We also recommend Trading Suppliers and Manufacturers of ALLYL(CYCLOPENTADIENYL)NICKEL(II) 97 (cas 12107-46-9). Pls Click Website Link as below: cas 12107-46-9 suppliers

Prev:Constrained phosphite ester complexes of π-cyclopentadienylmolybdenum tricarbonyl halides
Next:Electronic spectrum and photoreactivity of dichloro(1,5-cyclooctadiene)-palladium(II))