CuO Nanoparticles: A Simple, Effective, Ligand Free, and Reusable Heterogeneous Catalyst for N-Arylation of Benzimidazole

Copper(II) oxide (CuO) nanoparticles have been synthesized from copper acetate by simple precipitation method and were found to be an efficient and inexpensive catalyst for C–N cross-coupling reactions of benzimidazole with various aryl halides. The catalyst was characterized by scanning electron microscope, transmission electron microscope, Brunauer–Emmett–Teller—surface area, and X-ray diffraction analysis. Benzimidazole undergoes reaction...