Oxidation by Permanganate in strong alkaline medium. Oxidation of ethane-1,2-diol, glycol aldehyde, glycollic acid, and glyoxylic acid
✍ Scribed by J. Szammer; M. Jáky; O. V. Gerasimov
- Publisher
- John Wiley and Sons
- Year
- 1992
- Tongue
- English
- Weight
- 559 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0538-8066
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✦ Synopsis
A study was made on the kinetics and mechanism of the reaction 2Mn042-+ Product 2Mn04-+ S in aqueous solutions of 0.10 to 2.0 mol dm-3 alkaline concentrations. The substrates (S) applied were ethane-l,a-diol (ethylene glycol), glycol aldehyde, glycollic acid, and glyoxylic acid. Glycol aldehyde and glyoxylic acid were present in the form of dihydrate. In each case alkoxy anion is the reactive form and the Kg constant of deprotonation can be calculated from the kinetic data.
A mechanism based on electron abstraction is suggested. Manganate reacts with these substrates much slower than permanganate.