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

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.

DOI

10.3906/kim-1503-82

Keywords

Resorcinarene, calixarene, cavitands, $N$-heterocyclic carbene, palladium, PEPPSI complexes, Suzuki--Miyaura coupling

First Page

1171

Last Page

1179

Recommended Citation

SAHIN, N, SEMERIL, D, BRENNER, E, MATT, D, KAYA, C, & TOUPET, L (2015). Palladium-catalysed Suzuki--Miyaura cross-coupling with imidazolylidene ligands substituted by crowded resorcinarenyl and calixarenyl units. Turkish Journal of Chemistry 39 (6): 1171-1179. https://doi.org/10.3906/kim-1503-82