Synthesis and Electrochemical Behavior of Some 1H-3-Methyl-4-ethoxycarbonyl-5-(benzylidenehydrazino)pyrazoles |
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| Authors: | Liviu V Costea Vasile N Bercean Valentin Badea Klaus Gerdes Ulrich Jordis |
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| Institution: | (1) Faculty of Industrial Chemistry and Environmental Engineering, University “Politehnica” Timişoara, Timişoara, Romania;(2) Institute of Applied Synthetic Chemistry, Vienna University of Technology, Vienna, Austria |
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| Abstract: | Summary. 1H-3-Methyl-4-ethoxycarbonyl-5-(benzylidenehydrazino)pyrazoles are key intermediates in obtaining various heterocyclic systems
including pyrazolotriazoles. We present the voltammetric behavior of these compounds in nonaqueous media, with the following
para substituents grafted on the benzene ring: –N(CH3)2, –OH, –OCH3, –F, –Cl, –CF3, –NO2, as well as of the novel compounds with –Br, –I, and –SCH3 in the para position, in order to elucidate the influence of the various substituents on the mechanism of anodic oxidation. |
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| Keywords: | , Cyclic voltammetry, Donor-acceptor effects, Electrochemistry, Heterocycles, Linear free energy relationship, |
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