A. Trazza, R. Andruzzi, I. Carelli
Mar 1, 1982
Citations
0
Influential Citations
7
Citations
Journal
Electrochimica Acta
Abstract
The electrochemical behaviour of 3-cyano-(or 3-carbamoyl-) 1-methyl-(or benzyl) 1,4-dihydropyridines (4a, b) and the corresponding 1, 1′, 4, 4′ tetrahydro-4,4′-bipyridines (5a, b) or 1, 1′, 6, 4′-tetrahydro-bipyridines (6a, b) in DMF was investigated using ac and dc voltammetrhy, cyclic voltammetry, coulometry, uv and ir spectrometry. At a vitrous carbon electrode all the compounds examined can be oxidized and reduced in a single step. The oxidation process involves loss of two electrons per molecule of reactant to give the corresponding pyridinium salt. The reduction process (which occurs at very negative potentials) involves saturation of the C5C6 (dihydropyridines 4a, b) and probably the C5C6, C5′C6′ (dimers 5a, b) or the C4C5, C5′C6′ (dimers 6a, b) double bonds, two and four electron per molecule, respectively, being used up.