87768-95-4Relevant academic research and scientific papers
Investigations of Quaternary Pyridinium Salts, XV. Pseudobases and Redox Products in the Reaction of Pyridinium Salts with Alcoxides
Guendel, Wolf-H.
, p. 873 - 883 (2007/10/02)
Mono- and diquaternary pyridinium salts substituted in 3-position with electron withdrawing groups, react with alcohols under basic conditions to give 6-alcoxy-1,6-dihydropyridines.Symmetric dipyridinium salts react in aqueous alkaline solution to products with 6-pyridone and dihydropyridine moiety.This redox reaction depends on the length of the bridge connecting the pyridinium rings.Pyridinium salts can be reduced by aluminiumtriisopropoxide to 1,4-dihydropyridines. - Key words: Pyridinium Salts, Insertion Reaction, Redox Reaction
POLAROGRAPHIC REDUCTION OF 1-(p-SUBSTITUTED BENZYL)-3-CYANOPYRIDINIUM CHLORIDES
Pavlikova-Raclova, Frantiska,Kuthan, Josef
, p. 2273 - 2283 (2007/10/02)
Reduction of 3-cyanopyridinium salts has been studied on the mercury dropping electrode.Solvent and substituent effects and pH of the medium have been shown to modify in a certain extent differently the polarographic characteristic as compared with analogous 3-carbamoyl derivatives, which is due to higher electronegativity of the studied cations.
