𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Kinetics and mechanism of the oxidation of n-acetyl l-cysteine by 2,6-dichloroindophenol in methanol–water medium

✍ Scribed by Manjul Shrivastava; K. K. Mishra; B. P. Sinha

Publisher
John Wiley and Sons
Year
1982
Tongue
English
Weight
277 KB
Volume
14
Category
Article
ISSN
0538-8066

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The principal reactants interact in a molar ratio of 2:1 forming dihydroindophenol and the corresponding disulfide. The order of reaction is unity with respect to each reactant, namely, N‐acetyl L‐cysteine and indophenol. The rate shows an inverse linear relation with hydroxyl ions. It is not influenced by the variation in the initial concentration of indophenol. The rate increases on adding the salts possessing a cholinergic effect and the neutral electrolytes, as well as on increasing the dielectric constant of the medium. The products, namely, N‐acetyl L‐cystine (disulfide) and the leuco dye, do not influence the rate. A low energy and a highly negative entropy of activation (4.11 kcal/mol and ‐60.49 e.u., respectively) suggest the formation of an outer sphere complex as the rate‐determining step.

📜 SIMILAR VOLUMES

Kinetics and mechanism of the oxidation
Kinetics and mechanism of the oxidation of L-α-amino-n-butyric acid by permanganate in acid medium
✍ A. Arrizabalaga; F. J. Andrés-Ordax; M. Y. Fernández-Aránguiz; R. Peche 📂 Article 📅 1996 🏛 John Wiley and Sons 🌐 English ⚖ 383 KB 👁 1 views

The kinetic study of the oxidation of L-a-amino-n-butyric acid by permanganate ions has been carried out in buffered acid medium at pH = 1-3. using a spectrophotometric techriique An auto-catalytic effect has been observed in all cases due to Mn2+ ions formed as a product of the reaction. A first-or

Kinetics and mechanism of the oxidation
Kinetics and mechanism of the oxidation of carbon by NO2 in the presence of water vapor
✍ M. Jeguirim; V. Tschamber; J. F. Brilhac 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 288 KB

## Abstract The kinetics and mechanism of the oxidation of carbon by NO~2~ in absence and presence of water vapor were studied in a fixed bed reactor. The rate of carbon oxidation by NO~2~ is enhanced in the presence of water vapor in the range of temperature 300–400°C. The benefit effect of water

Manganese(III) oxidation of L-serine in
Manganese(III) oxidation of L-serine in aqueous sulfuric acid medium: Kinetics and mechanism
✍ S. Chandraju; K. S. Rangappa; N. M. Made Gowda 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 138 KB 👁 2 views

Kinetics and mechanism of oxidation of L-serine by manganese(III) ions have been studied in aqueous sulfuric acid medium at Manganese(III) sulfate was prepared by an 323 K. electrolytic oxidation of manganous sulfate in aqueous sulfuric acid. The dependencies of the reaction rate are: an unusual one

Kinetics and mechanism of oxidation of s
Kinetics and mechanism of oxidation of sugars by quinquevalent vanadium in binary mixture solvents of DMSO–water and acetic acid–water in H2SO4 medium
✍ Subas C. Pati; Markandeswar Panda 📂 Article 📅 1979 🏛 John Wiley and Sons 🌐 English ⚖ 385 KB 👁 1 views

## Abstract The kinetics of oxidation of aldosugars and ketosugar by quinquevalent vanadium in binary mixtures of DMSO–water and acetic acid–water in sulfuric acid medium have been studied. The reaction is first order in both oxidant and substrate. The effect of acidity on the reaction kinetics has

Kinetics and mechanism of oxidation of b
Kinetics and mechanism of oxidation of benzohydrazide by bromate catalyzed by vanadium(IV) in aqueous acidic medium
✍ S. A. Shewale; A. N. Phadkule; G. S. Gokavi 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 English ⚖ 203 KB 👁 1 views

## Abstract The reaction between benzohydrazide and potassium bromate catalyzed by vanadium(IV) was studied under pseudo‐first‐order condition keeping large excess of hydrazide concentration over that of the oxidant. The initiation of the reaction occurs through oxidation of the catalyst vanadium(I

Mechanism of oxidation of alanine by chl
Mechanism of oxidation of alanine by chloroaurate(III) complexes in acid medium: Kinetics of the rate processes
✍ Pratik K. Sen; Nasimul Gani; Jayanta K. Midya; Biswajit Pal 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 204 KB

## Abstract The kinetics of the oxidation of alanine by chloroaurate(III) complexes in acetate buffer medium has been investigated. The major oxidation product of alanine has been identified as acetaldehyde by ^1^H NMR spectroscopy. Under the experimental conditions, AuCl and AuCl~3~(OH)^−^ are the