Synthesis and catalytic activity of ionic palladium \textit{N}-heterocyclic carbene complexes

Authors: SEDAT YAŞAR, MİTAT AKKOÇ, NAMIK ÖZDEMİR, İSMAİL ÖZDEMİR

Abstract: The synthesis of 3 benzimidazole-based ionic Pd(II)-NHC complexes (NHC:$N$-heterocyclic carbene) is presented. The structures of the complexes are as follows: [NHC-PdBr$_{3}$]$^{-}$[NHC]$^{+}$. The ionic palladium(II)-NHC complexes were synthesized in high yields and were fully characterized by nuclear magnetic resonance spectroscopy, X-ray diffraction, LC-MS/MS, and elemental analysis. These complexes have been identified as active catalysts in Suzuki-Miyaura reactions in a solution of 2-propanol and water at room temperature for different aryl bromides.

Keywords: Ionic palladium complex, $N$-heterocyclic carbene, C-C bond formation, anionic palladium species, Suzuki-Miyaura cross-coupling reactions

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