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- W4247172676 abstract "The oximes listed in Table 1 were investigated by the method of classical polarography in mixtures of Britton-Robinson buffers and N,N-dimethylformamide (41) of pH 2.30–13.20. Although the reduction was very much as described for other compounds of this type, some differences in polarographic behaviour were found and are discussed. Essentially, one four-electron reduction wave, which depended on pH, was obtained for mono-oximes in acid medium. It corresponded to the reduction of the oxime group to a primary amine in two two-electron steps. In neutral and alkaline media the reduction wave usually disappeared and only compound IX was reduced throughout the pH range. Polarographic reduction of dioximes gave usually two four-electron waves, which corresponded to the reduction of the oxime groups. In some cases there appeared additional waves at much more negative potentials. They were probably due to the surface activity of the compounds. Pyridyls at C-3 in the mono-oximes investigated had practically no influence on their susceptibility to polarographic reduction. The effect of substituents at C-1, however, was very considerable and pyridyls in this position increased the susceptibility very clearly." @default.
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- W4247172676 date "1973-11-25" @default.
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- W4247172676 title "Polarographic behaviour of pyridyl analogues of chalcone Part III. Polarographic reduction of the derivative oximes" @default.
- W4247172676 doi "https://doi.org/10.1016/0368-1874(73)85104-4" @default.
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