Chemistry of Heterocyclic Compounds p. 1238 - 1248 (1988)
Update date:2022-08-05
Topics:
Baumane, L. Kh.
Stradyn', Ya. P.
Gavar, R. A.
Gaukhman, A. P.
Dubur, G. Ya.
Free anion radicals of the nitrobenzene and nitrosobenzene type, which were identified by EPR spectroscopy, are formed in the electrochemical reduction of isomeric 4-(nitrophenyl)-2,6-dimethyl-3,5-dicyano-1,4-dihydropyridines on mercury and solid electrodes.Reduction of the dihydropyridine ring is observed only for N-substituted p- and m-nitrophenyl derivatives of 1,4-dihydropyridine.An intermediate with a 2-pyridonemethide structure was identified; a set of primary and secondary chemical reactions that are associated with the electrolytic reduction of the investigated compounds is presented.
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