Copper-Catalyzed Construction of Trinuclear N-Fused Hybrid Scaffolds Using Cyclic Ureas as New Building Blocks

2-(2-Bromoaryl)- and 2-(2-bromovinyl)-benzimidazoles are coupled and cyclized with cyclic ureas as new building blocks in dimethylformamide in the presence of a catalytic amount of a copper catalyst and a base to give the corresponding trinuclear N-fused hybrid scaffolds in good yields. Trinuclear N-fused hybrid scaffolds having methoxy group on benzimidazole moiety are readily oxidized to unprecedented benzimidazolequinone-fused hybrid scaffolds in high yields by treatment of ceric ammonium nitrate in acetonitrile/H₂O.