Synthesis and X-ray crystal structure of pyrrolo[1,2-a]benzimidazoles |
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| Authors: | Adel M. Awadallah Konrad Seppelt |
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| Affiliation: | a Chemistry Department, Faculty of Science, Islamic University of Gaza, PO Box 108, Gaza, Palestine
b Institut für Chemie der Freien Universität, Fabeckstraße 34-36, D-14195 Berlin, Germany |
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| Abstract: | Reaction of nitrilimines 1 with 2-cyanomethylbenzimidazole 2 gave the 3-arylazo-2-methylpyrrolo[1,2-a]benzimidazole 4a rather than the reported 2-arylazo-3-methylpyrrolo[1,2-a]benzimidazole 3a. The correct structure of the product was determined using X-ray crystal structure analysis. The similar reaction of nitrilimines with 2-aminobenzimidazole 5 gave the acyclic nucleophilic addition product 6. |
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| Keywords: | Nitrilimines 2-Cyanomethylbenzimidazole 2-Aminobenzimidazole Pyrrolo[1,2-a]benzimidazole |
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