Synthesis of novel benzimidazole salts and microwave-assisted catalytic activity of in situ generated Pd nanoparticles from a catalyst system consisting of benzimidazol salt, Pd(OAc)2, and base in a Suzuki-Miyaura reaction

Yilmaz, UlkuKucukbay, HasanTurktekin Celikesir, SevimAkkurt, MehmetBuyukgungor, Orhan2024-08-042024-08-0420131300-0527https://doi.org/10.3906/kim-1207-18https://hdl.handle.net/11616/96278Novel benzimidazolium salts having N-benzyl or N-(4-substitutedbenzyl) groups were synthesized and their microwave-promoted catalytic activity for the Suzuki-Miyaura cross-coupling reaction were determined using in situ formed palladium(0) nanoparticles (PdNPs) from a catalytic system consisting of Pd(OAc)(2)/K2CO3 in DMF/H2O. PdNPs were characterized by X-ray diffraction (XRD) pattern and particle size of in situ generated PdNPs from the Pd(111) plane was determined to be of diameter 19.6 nm by the Debye-Scherrer equation. Moreover, the yield of the Suzuki-Miyaura reactions with aryl iodides and aryl bromides was found to be nearly quantitative. The synthesized benzimidazole salts (1-5) were identified by H-1 and C-13 NMR and IR spectroscopic methods, and micro analysis. The molecular structure of 5 was also determined by X-ray crystallography.eninfo:eu-repo/semantics/closedAccessBenzimidazole saltN-heterocyclic carbenespalladium nanoparticlescross-coupling reactionSuzuki-Miyaura couplingmicrowaveSynthesis of novel benzimidazole salts and microwave-assisted catalytic activity of in situ generated Pd nanoparticles from a catalyst system consisting of benzimidazol salt, Pd(OAc)2, and base in a Suzuki-Miyaura reactionArticle37572173310.3906/kim-1207-182-s2.0-84887878658N/AWOS:000324535700003Q3