Open AccessResorcinarene-mono-benzimidazolium salts as NHC ligands for Suzuki--Miyaura cross-couplings catalysts
Author(s) -
Ümit İşçi,
Muhíttín Aygün,
Resul Sevinçek,
Yunus Zorlu,
Fabienne Dumoulin
Publication year - 2015
Publication title -
turkish journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.239
H-Index - 46
eISSN - 1303-6130
pISSN - 1300-0527
DOI - 10.3906/kim-1506-50
Subject(s) - resorcinarene , chemistry , catalysis , salt (chemistry) , proton nmr , coupling reaction , polymer chemistry , medicinal chemistry , organic chemistry , molecule
Two mono-benzimidazolium salts of resorcinarene have been prepared and used as ligands in Suzuki--Miyaura cross-coupling reactions. They have been fully characterized by $^{1}$H and $^{13}$C NMR, MALDI, and FT-IR spectroscopic methods, and their structures were confirmed by X-ray diffraction analysis. These two new resorcinarene-based mono-benzimidazolium salts showed good catalytic activity for coupling reactions in DMF. The highest conversion was achieved for arylation of 4-bromotoluene using the resorcinarenyl mono-dimethylbenzimidazolium salt.
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