Oxidation with Permanganate in Strong Alkaline Medium. Oxidation of Pyruvic and Lactic Acids
Full article
| Общее |
Language:
Английский,
Genre:
Full article,
Status:
Published,
Source type:
Original
|
| Journal |
International Journal of Chemical Kinetics
ISSN: 0538-8066
, E-ISSN: 1097-4601
|
| Output data |
Year: 1992,
Volume: 24,
Number: 12,
Pages: 1055-1065
Pages count
: 11
DOI:
10.1002/kin.550241204
|
| Authors |
Jáky Miklós
1
,
Kozhevnikov Ivan V.
2
,
HÖft Eugen
3
|
| Affiliations |
| 1 |
Central Research Institute for Chemistry of the Hungarian Academy of Sciences, H-1525 Budapest, P.O. Box 17, Hungary
|
| 2 |
Institute of Catalysis, Siberian Branch of the Academy of Sciences of the USSR, Prospect Nauki 5, 630090, Novosibirsk 90, USSR
|
| 3 |
Zntralinstitut fur Organische Chemie, Berlin-Adlershof, Rudower Chaussee 5., Germany
|
|
Funding (1)
|
1
|
Hungarian Scientific Research Fund
|
1778
|
The reaction of permanganate ion with pyruvic acid and lactic acid has been studied in aqueous solutions containing 0.10–2.0 mol dm−3 alkali. In this range of HO− concentration the reaction 2MnO4- + Substrate --> 2MnO42- + product is followed slowly by the reduction of manganate, thus, the above process can be studied separately. In the case of lactic acid (LA), the reactive species is alkoxy anion, and the deprotonation constant could be calculated from the kinetic data. A mechanism based on electron abstraction from the alkoxy anion has been proposed. In the case of pyruvic acid (PA) oxidation may proceed with participation of enolate anion, or hydrate anion, or an adduct. These three possibilities have been investigated. © John Wiley & Sons, Inc.