Recent advances on the synthesis of azoles, azines and azepines fused to benzimidazole

The current review article represents a survey covering the literatures on azoles, azines and azepines fused to the a face of a benzimidazole moiety since 1980.Synthetic routes leading to benzimidazole fused with different ring systems; five-, six-, and seven-membered heterocyclic rings, containing one-, two-and three-heteroatoms were reported utilizing simple reactive benzimidazole synthons