Electrochemical Reductions of Methyl Azinyl Ketoximes on Mercury

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Title:Electrochemical Reductions of Methyl Azinyl Ketoximes on Mercury
Creators:
Cibulka, Radek
Liška, František
Ludvík, Jiří
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 65, 10, pp. 1630-1642
Uncontrolled Keywords:Coulometry, Pyridines, Oximes, Micellar catalysts, Polarography, Ester hydrolysis, Diazines, Reductions, Electrochemistry

Abstract

Electroreductions of hydroxyimino group of methyl hetaryl (pyridin-2-yl, pyridazin-3-yl, pyrimidin-2-yl, pyrimidin-4-yl, pyrazinyl) ketoximes on mercury electrodes were studied using dc polarography, coulometry and preparative electrolysis. Depending on pH, double- protonated, single-protonated and neutral forms of the ketoximes are transformed in a four-electron reduction to the corresponding amine. The second nitrogen in the diazine ketoximes facilitates reduction of the oxime group in comparison with methyl pyridin-2-yl ketoxime. Reducibility of the oximes correlates with the enhancement of their hydrolytic activity towards 4-nitrophenyl acetate. The reduction of the heteroaromatic ring in the diazine ketoximes proceeds at more negative potentials than the reduction of the oxime group. <p>

Title:Electrochemical Reductions of Methyl Azinyl Ketoximes on Mercury
Creators:
Cibulka, Radek
Liška, František
Ludvík, Jiří
Uncontrolled Keywords:Coulometry, Pyridines, Oximes, Micellar catalysts, Polarography, Ester hydrolysis, Diazines, Reductions, Electrochemistry
Divisions:Life and Chemical Sciences > Institute of Organic Chemistry and Biochemistry > Collection of Czechoslovak Chemical Communications
Journal or Publication Title:Collection of Czechoslovak Chemical Communications
Volume:65
Number:10
Page Range:pp. 1630-1642
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc20001630UNSPECIFIED
ID Code:1745
Item Type:Article
Deposited On:06 Feb 2009 17:12
Last Modified:06 Feb 2009 16:12

Citation

Cibulka, Radek; Liška, František; Ludvík, Jiří (2000) Electrochemical Reductions of Methyl Azinyl Ketoximes on Mercury. Collection of Czechoslovak Chemical Communications, 65 (10). pp. 1630-1642. ISSN 0010-0765

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