- Turkish Journal of Chemistry
- Vol: 39 Issue: 6
- Palladium-catalysed Suzuki--Miyaura cross-coupling with imidazolylidene ligands substituted by crowd...
Palladium-catalysed Suzuki--Miyaura cross-coupling with imidazolylidene ligands substituted by crowded resorcinarenyl and calixarenyl units
Authors : Neslihan Sahin, David Semeril, Eric Brenner, Dominique Matt, Cemal Kaya, Loic Toupet
Pages : 1171-1179
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Publication Date : 9999-12-31
Article Type : Makaleler
Abstract :Two $N$-heterocyclic carbene (NHC) palladium complexes of formula [PdBr$_{2}$(NHC)(pyridine)] in which the carbenic ring is flanked by sterically crowded cavitand substituents were prepared from appropriate imidazolium salts bearing either two resorcinarene or a combination of resorcinarene and calixarene fragments. Both complexes displayed high stability and good activities in the cross-coupling of aryl bromides with phenyl boronic acid. One of the imidazolium salts was characterised by an X-ray diffraction study.Keywords : Resorcinarene, calixarene, cavitands, $N$-heterocyclic carbene, palladium, PEPPSI complexes, Suzuki--Miyaura coupling