Resorcinarene-mono-benzimidazolium salts as NHC ligands for Suzuki--Miyaura cross-couplings catalysts
作者:Ümit İŞCİ、Muhittin AYGÜN、Resul SEVİNCEK、Yunus ZORLU、Fabienne DUMOULİN
DOI:10.3906/kim-1506-50
日期:——
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.
已经制备了两种基于重氮树脂的单苯并咪唑盐,并作为配体用于铃木-宫浦交叉偶联反应。它们通过 $^1}$H 和 $^13}$C NMR、MALDI 和 FT-IR 光谱方法进行了全面表征,并通过 X 射线衍射分析确认了其结构。这两种新的基于重氮树脂的单苯并咪唑盐在 DMF 中对偶联反应表现出良好的催化活性。使用重氮树脂单二甲基苯并咪唑盐对 4-溴甲苯进行芳基化反应时,达到了最高转化率。