N. A. Zhukova, D. S. Perevalova, V. V. Syakaev, T. N. Beschastnova, A. T. Gubaidullin, O. G. Sinyashin, V. A. Mamedov
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Rearrangement of 3-(bromomethyl)quinoxalin-2(1H)-ones when exposed to 2-aminopyridines as a new method for the synthesis of 2-(imidazo[1,2-a]pyridin-2-yl)benzimidazoles
A new efficient method was developed for the synthesis of 2-(imidazo[1,2-a]pyridin-2-yl)benzimidazoles based on the Mamedov rearrangement. The key step of the synthesis involves the acid-catalyzed rearrangement of spiroquinoxalinone derivatives as intramolecular cyclization products of 2-amino-1-[(quinoxalin-2(1H)-on-3-yl]methyl)pyridinium salts, which are generated by the modified Chichibabin reaction.
期刊介绍：
Publishing nearly 500 original articles a year, by leading Scientists from Russia and throughout the world, Russian Chemical Bulletin is a prominent international journal. The coverage of the journal spans practically all areas of fundamental chemical research and is presented in five sections:
General and Inorganic Chemistry;
Physical Chemistry;
Organic Chemistry;
Organometallic Chemistry;
Chemistry of Natural Compounds and Bioorganic Chemistry.
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