A highly efficientoxidativecarbonylation reaction of amines to ureas was developed making use of carbene–palladiumcomplexes in the absence of any promoter. Both aliphatic amines and aromatic amines were transformed in good to excellent yields to the expected ureas.
PEPPSI-type complexes with small NHC ligands obtained according to the new method efficiently catalyzed Suzuki-Miyaura reaction
作者:W. Sikorski、W. Zawartka、A.M. Trzeciak
DOI:10.1016/j.jorganchem.2018.01.033
日期:2018.7
A series of 13 new PEPPSI-type complexes with small NHC ligands and differently substituted imidazoles were prepared using as substrates [Pd(μ-X)X(bmim-y)]2 dimer or imidazolecomplexes PdCl2(imidazole)2. Improvement of the synthetic method allowed simplification of the purification step. The obtained complexes efficiently catalyzed the Suzuki-Miyaura cross-coupling of substituted bromobenzenes and