peri-cyclization of 11-aroylmethyl-2,3,4,5-tetrahydro[1,3]-diazepinobenzimidazoles into 2-aryl-3,4,5,6-tetrahydro-2a,6a,10b-triazabenzo[a]cyclopenta[cd]azulenium bromides

11-Aroylmethyl-2,3,4,5-tetrahydro[1,3]diazepinobenzimidazoles at heating in conc. HBr suffer a peri -cyclization with the closure of an additional imidazole ring involving the carbonyl group of ketone and the nitrogen atom of the diazepine ring affording previously unknown 2-aryl-3,4,5,6-tetrahydro-...

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Bibliographic Details
Published in:Russian journal of organic chemistry 2017-08, Vol.53 (8), p.1253-1257
Main Authors: Kuz’menko, T. A., Morkovnik, A. S., Divaeva, L. N., Bogoslavtseva, M. V.
Format: Article
Language:English
Subjects:
Aromatic compounds
Bromides
Carbonyls
Chemistry
Chemistry and Materials Science
Imidazole
Organic Chemistry
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Summary:11-Aroylmethyl-2,3,4,5-tetrahydro[1,3]diazepinobenzimidazoles at heating in conc. HBr suffer a peri -cyclization with the closure of an additional imidazole ring involving the carbonyl group of ketone and the nitrogen atom of the diazepine ring affording previously unknown 2-aryl-3,4,5,6-tetrahydro-2a,6a,10btriazabenzo[ a ]cyclopenta[ cd ]azulenium bromides.
ISSN:1070-4280
1608-3393
DOI:10.1134/S1070428017080164