Synthesis, characterization and A3-coupling activity of novel Ag-NHC complexes bearing a 5,6-dimethylbenzimidazole core


Özge Karaca E. Ö., Önder B., Tayar M., GÜRBÜZ N., ÖZDEMİR İ.

Journal of Molecular Structure, cilt.1370, 2026 (SCI-Expanded, Scopus) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 1370
  • Basım Tarihi: 2026
  • Doi Numarası: 10.1016/j.molstruc.2026.146370
  • Dergi Adı: Journal of Molecular Structure
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Chemical Abstracts Core, Chimica, Compendex, INSPEC
  • Anahtar Kelimeler: A3-coupling, Ag-NHC, N-heterocyclic carbene (NHCS), Propargyl amine
  • İnönü Üniversitesi Adresli: Evet

Özet

The A3-coupling reaction, involving the one-pot three-component condensation of an aldehyde, an alkyne, and an amine to form propargyl amines, has emerged as a powerful synthetic tool in modern organic chemistry. Among various metal catalysts, silver(I)-based systems, especially those supported by N-heterocyclic carbenes (NHCs), have demonstrated excellent catalytic performance under mild and sustainable conditions. Ag(I)-NHC complexes offer enhanced stability, tunable steric and electronic properties, and high catalytic efficiency, enabling efficient C-H activation and bond formation in A3-coupling processes. Recent study, we prepared five new silver NHC complexes and the structures of the newly synthesized complexes were confirmed by NMR (¹H, ¹³C), FT-IR and HR-MS analysis. All synthesized complexes used catalyst for A3-coupling reactions. The catalytic studies were carried out in air using water as the solvent. In contrast to similar studies, the use of water as the solvent introduced novelty to the subject.