About: Reduction of two isomeric oximes of aryl alkyl 1,2-diketones: Difference in products formed in polarography and controlled potential electrolysis

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Description	At pH lower than 5 under conditions of d.c. polarography and cyclic voltammetry the oxime PhCOC(=NOH)CH3 does not yield the expected reducible alpha-aminoketone, but rather a non-reducible olefin derivative. Its formation is attributed to a reduction of a diprotonated form of a ketoimine intermediate. In the same pH-range under conditions of controlled potential electrolysis the olefin derivative is slowly converted in a homogeneous reaction into a reducible alpha-aminoketone. At pH lower than 5 under conditions of d.c. polarography and cyclic voltammetry the oxime PhCOC(=NOH)CH3 does not yield the expected reducible alpha-aminoketone, but rather a non-reducible olefin derivative. Its formation is attributed to a reduction of a diprotonated form of a ketoimine intermediate. In the same pH-range under conditions of controlled potential electrolysis the olefin derivative is slowly converted in a homogeneous reaction into a reducible alpha-aminoketone. (en) Na rozdíl od izomérního oximu Ph-C(=NOH)-C(=O)-CH3 nevzniká při polarografické a voltametrické redukci oximu Ph-C(=O)-C(=NOH)-CH3 za pH < 5 očekávaný a dále redukovatelný α-aminoketon, ale neredukovatelný olefin Ph-C(OH)=C(NH2)-CH3. Jeho tvorba je přisouzena redukci diprotonované formy ketoiminového derivátu, který je stabilizován pouze jednou substituční variantou. Tento enolový produkt však není zcela stálý a pomalu konvertuje na příslušný aminoketon, jehož redukce se projeví pouze v dlouhotrvající elektrolýze. (cs)
Title	Reduction of two isomeric oximes of aryl alkyl 1,2-diketones: Difference in products formed in polarography and controlled potential electrolysis Reduction of two isomeric oximes of aryl alkyl 1,2-diketones: Difference in products formed in polarography and controlled potential electrolysis (en) Redukce dvou izomerních oximů aryl alkyl 1,2-diketonů: Rozdíl v produktech vzniklých při polarografii a při potenciostatické elektrolýze (cs)
skos:prefLabel	Reduction of two isomeric oximes of aryl alkyl 1,2-diketones: Difference in products formed in polarography and controlled potential electrolysis Reduction of two isomeric oximes of aryl alkyl 1,2-diketones: Difference in products formed in polarography and controlled potential electrolysis (en) Redukce dvou izomerních oximů aryl alkyl 1,2-diketonů: Rozdíl v produktech vzniklých při polarografii a při potenciostatické elektrolýze (cs)
skos:notation	RIV/61388955:_____/06:00085396!RIV08-MSM-61388955
http://linked.open.../vavai/riv/strany	1749;1752
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(1P05ME785), Z(AV0Z40400503)
http://linked.open...iv/cisloPeriodika	11
http://linked.open...vai/riv/dodaniDat	2008
http://linked.open...aciTvurceVysledku	Ludvík, Jiří
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav fyzikální chemie J. Heyrovského AV ČR, v.v.i.
http://linked.open...dnocenehoVysledku	496796
http://linked.open...ai/riv/idVysledku	RIV/61388955:_____/06:00085396
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	polarography; cyclic voltammetry; controlled potential electrolysis (en)
http://linked.open.../riv/klicoveSlovo	controlled potential electrolysis cyclic voltammetry polarography
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[66716C10E93D]
http://linked.open...i/riv/nazevZdroje	Electrochemistry Communications
http://linked.open...in/vavai/riv/obor	CG
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Chemical and electrochemical properties of oximes - antidotes against nervous gases
http://linked.open...UplatneniVysledku	2006
http://linked.open...v/svazekPeriodika	8
http://linked.open...iv/tvurceVysledku	Ludvík, Jiří Celik, H. Zuman, P.
http://linked.open...n/vavai/riv/zamer	Struktura, reaktivita a dynamika molekulárních a biomolekulárních systémů: teorie, experiment, aplikace
issn	1388-2481
number of pages	4 (xsd:int)

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