Nitro and aminobenzimidazoles
Institute of Organic Chemistry, Catalysis and Petrochemistry, Faculty of Chemical and Food Technology, Slovak Technical University, Radlinského 9, SK-812 37 Bratislava, Slovak Republic
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Abstract: A summary of the preparation methods of 2 tautomeric and 4 N-methylated benzimidazoles with a nitro group on the benzene ring (1—6) and with an amino group in the same positions (7—12) were summarized. Annular tautomerism of the title compounds 1—12 has been studied using 1H, 13C and 15N NMR spectra in liquid and solid state (CPMAS), UV spectra and quantum chemical calculations.
Keywords: X-Nitro-1-methylbenzimidazoles, X-amino-1-methylbenzimidazoles, NMR, preparations, annular tautomerism
Full paper in Portable Document Format: acs_0317.pdf
Acta Chimica Slovaca, Vol. 11, No. 2, 2018, pp. 182—188, DOI: 10.2478/acs-2018-0026