5-disubstituted 1-aryl-3-alkyl-imidazolium salts were synthesized via the multicomponent reaction of diketone derivatives, sterically congested arylamines, and alkylamines. Moreover, two novel unsymmetrical bulky cycloalkyl-based NHC-Pd complexes proved highly active as catalysts for Suzuki–Miyaura and Negishi cross-coupling reactions.
通过二酮衍
生物,空间上拥挤的芳基胺和烷基胺的多组分反应合成了各种新颖的(a)手性4,5-二取代的1-芳基-3-烷基-
咪唑鎓盐。此外,事实证明,两种新型的不对称大体积的基于环烷基的NHC-Pd络合物具有很高的活性,可作为Suzuki-Miyaura和Negishi交叉偶联反应的催化剂。