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1. Hetarenes with a bridge nitrogen atom. 5. Synthesis of the indolizine ring by transformation of the oxazolo[3,2-a]pyridinium cation when treated with acetylacetone
E. V. Babaev and S. V. Bozhenko
Chemistry of Heterocyclic Compounds
Volume 33, Number 1, 125-126

DOI:

http://dx.doi.org/10.1007/BF02290759

2. Heterocycles with a bridging nitrogen atom. 9. Recyclization of an oxazole fragment to a pyrrole fragment. Synthesis and crystal structure of 5-hexamethylenimino-2-p-nitrophenylindolyzine
E. V. Babaev, A. V. Efimov, S. G. Zhukov and V. B. Rybakov
Chemistry of Heterocyclic Compounds
Volume 34, Number 7, 852-854

DOI:

http://dx.doi.org/10.1007/BF02251696

3. Synthesis of 1-nitro-2-phenylindolizine by the ring transformation of oxazolo[3,2-a]pyridinium salt in the reaction with nitromethane
E. V. Babaev, S. V. Bozhenko and D. A. Maiboroda
Russian Chemical Bulletin
Volume 44, Number 11, 2203

DOI:

http://dx.doi.org/10.1007/BF00696740

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