Palladium-catalysed Suzuki-Miyaura cross-coupling with imidazolylidene ligands substituted by crowded resorcinarenyl and calixarenyl units


Sahin N. , Semeril D., Brenner E., Matt D., KAYA C. , Toupet L.

TURKISH JOURNAL OF CHEMISTRY, vol.39, no.6, pp.1171-1179, 2015 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 39 Issue: 6
  • Publication Date: 2015
  • Doi Number: 10.3906/kim-1503-82
  • Title of Journal : TURKISH JOURNAL OF CHEMISTRY
  • Page Numbers: pp.1171-1179

Abstract

Two N-heterocyclic carbene (NHC) palladium complexes of formula [PdBr2 (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.