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Benzimidazole is a heterocyclic aromatic organic compound. This bicyclic compound consists of the fusion of benzene and imidazole. The most prominent benzimidazole compound in nature is N-ribosyl-dimethylbenzimidazole, which serves as an axial ligand for cobalt in vitamin B12. 
Additional recommended knowledge
It is produced commercially as an parasiticide. The usual synthesis involves condensation of trimethylorthoformate and o-phenylenediamine:
Benzimidazole, in an extension of the well-elaborated imidazole system, has been used as carbon skeletons for N-heterocyclic carbenes. The NHCs are usually used as ligands for transition metal complexes. They are often prepared by deprotonating an N,N'-disubstituted benzimidazolium salt at the 2-position with a base.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Benzimidazole". A list of authors is available in Wikipedia.|