Electrochemical oxidation of ferrocenylsubstituted 1,4-dihydropyridines

Autor:	E. Yu. Nesterova, Ya. V. Ogle, G. N. Yashchenko, A. K. Sheinkman, Ya. P. Stradyn
Rok vydání:	1987
Předmět:	chemistry.chemical_compound Deprotonation chemistry Radical Organic Chemistry Substituent Cationic polymerization Rotating disk electrode Photochemistry Electrochemistry Acetonitrile Dication
Zdroj:	Chemistry of Heterocyclic Compounds. 23:57-60
ISSN:	1573-8353 0009-3122
Popis:	1-p-Ferrocenylphenyl- and 4-ferrocenylsubstituted Hantzsch esters were subjected to electrochemical oxidation using a graphite cyclic rotating disk electrode in acetonitrile medium; in each case the initial response was one-electron oxidation of the ferrocenyl substituent to give a ferrocenium cation, which was followed by a two-electron electrochemical oxidation of the dihydropyridine ring involving intermediate deprotonation of the latter and formation of a ferroceniumpyridinium dication. We have also detected for the first time at room temperature relatively stable cation radicals of 2,6-dimethyl-3,5-diethoxycarbonyl-1,4-dihydropyridine containing a cationic ferrocenium substituent in the 4-position; these proved to be more stable than cation radicals of dihydropyridines containing ferrocenyl substituents attached to the nitrogen atom.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7ac003edd4549acd18f82532d083682b https://doi.org/10.1007/bf00475476 Zobrazit plný text záznamu Full text from SpringerLink