Copper-doped silica cuprous sulfate: A highly efficient heterogeneous nano-catalyst for one-pot three-component synthesis of 1-H-2-substituted benzimidazoles from 2-bromoanilines, aldehydes, and [bmim]N3
Keywords: CDSCS; [bmim]N3; N-heterocycle; 1-H-2-substituted benzimidazole; Multi-component reaction;