Heterocycles with a bridgehead nitrogen atom. 16. Assembly of a peri-fused system from an angular tricycle by recyclization of an oxazole ring into pyrrole one

Autor:	Eugene V. Babaev, Alexander A. Tsisevich, Leonid A. Aslanov, Victor B. Rybakov, Dmitry V. Albov
Rok vydání:	2005
Předmět:	chemistry.chemical_compound Annulation chemistry Nitrogen atom Quinoline Indolizine General Chemistry Pyridinium Ring (chemistry) Medicinal chemistry Oxazole Pyrrole
Zdroj:	Russian Chemical Bulletin. 54:259-261
ISSN:	1573-9171 1066-5285
DOI:	10.1007/s11172-005-0248-x
Popis:	An unusual example of the recyclization of the tricyclic 6,7,8,9-tetrahydrooxazolo[3,2-a]quinolinium system into the 8,9-dihydro-7H-pyrrolo[3,2,1-ij]quinoline system was discovered. The reaction is a topological modification of the known conversion of oxazolo[3,2-a]pyridinium salts into indolizines. The structural feature of this transformation is a change of the annelation type in the tricycle from the angular one to peri-fusion of three rings.
Databáze:	OpenAIRE
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