Chemistry of Heterocyclic Compounds p. 563 - 566 (1987)
Update date:2022-08-04
Topics:
Kochkanyan, R. O.
Lukanyuk, S. S.
The pyridinium cations within betaines can be aminated under mild conditions with aqueous ammonia, ultimately undergoing cyclization to a new tricyclic system: 4-substituted-3,5-dioxopyrimido<5,6-c>-1'-azaquinolizine.Intermediates in the reaction are 4-substituted-3,5-dioxo-2,2-dihydropyrimido<5,6-c>-6H-1'-quinolizines.
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