Kinetics and mechanism of electron-transfer reactions: ruthenium(III) chloride catalyzed oxidation of aspartic acid by peroxomonosulfate ion in acidic medium

Sailani, Riya; Sharma, Manisha; Pareek, Deepmala; Khandelwal, C. L.; Sharma, P. D.

doi:10.1007/s11144-011-0412-2

Cited by 5 publications

(3 citation statements)

References 41 publications

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“…The article investigates the kinetics and mechanism of Ru(III) catalyzed oxidation of menthol using an acidic solution of potassium bromate in the presence of mercuric acetate as a bromide ion scavenger (Figure 10). [26] The experiment was conducted as, first the solution of potassium bromate was prepared by dissolving the salt in doubly distilled water. Then the solution of menthol was prepared by dissolving the salt in 70% acetic acid and the solution of ruthenium(III) chloride was obtained by dissolving the ruthenium trichloride in aqueous hydrochloric acid.…”

Section: Oxidation Without Chromiummentioning

confidence: 99%

Menthol Oxidation to Menthone: An Important Chemical Transformation

2023

General Chemistry

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Oxidation is a key transformation in chemistry being involved in a wide range of processes. In natural products, this reaction plays a critical role in the biosynthesis of several classes from different sources. In this context, the oxidation of menthol to menthone is an important reaction with a variety of applications in several fields, such as natural products, organic synthesis, and medicinal chemistry. Considering this, the present article aims to review different methodologies and oxidation reagents capable of performing this transformation, including the green chemistry process.

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Section: Oxidation Without Chromiummentioning

confidence: 99%

Menthol Oxidation to Menthone: An Important Chemical Transformation

2023

General Chemistry

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“…However, reactions of this reagent in an alkaline medium are considerably slower. It is, therefore, reactions of chloramine-T in an alkaline medium have been studied in the presence of various catalysts such as ruthenium(III), 6 palladium(II), 7,8 and osmium(VIII) 1,5,9 Ruthenium(III) has been widely employed as a catalyst in the acid medium 10 of chloramine-T reactions and both in acid [11][12][13][14] and alkaline medium 15 in other reactions. The study of paracetamol with chloramine-T in the presence of ruthenium(III) in an alkaline medium is not reported to date.…”

Section: Introductionmentioning

confidence: 99%

Ruthenium(III) catalyzed oxidation of paracetamol by chloramine‐T in aqueous alkaline medium – A kinetic and mechanistic pathway

Pareek

Rolaniya

Bhasin

et al. 2022

Int J of Chemical Kinetics

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The kinetic study of ruthenium(III) chloride catalyzed oxidation of paracetamol by N‐chloro‐p‐toluene sulfonamide (chloramine‐T) in the alkaline medium has been performed. The reaction exhibits second order nature and the effect of the catalyst indicates the occurrence of uncatalyzed reaction simultaneously. Rate is decelerated by hydroxide ions. A plausible reaction mechanism has been suggested and the rate law is derived to account for such experiential observations. The activation parameters have been calculated. No evidence of the participation of free radicals is observed.

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“…[37][38][39][40][41] In our laboratory, kinetic investigations have been carried out with various reactants in acidic medium. [42][43][44][45][46] The present work summarizes the results of series of experiments to explore the electron transfer path from chlorpromazine hydrochloride to hexachloroiridate (IV) in acidic medium spectrophotometrically. The results suggest formation of free radical cation as intermediate which subsequently undergoes the electron transfer and ultimately leads to sulfoxide derivative.…”

Section: Introductionmentioning

confidence: 99%

Spectrophotometric Kinetic and Mechanistic Investigation of Chlorpromazine Radical Cation with Hexachloroiridate (IV) in Catalyzed Aqueous Acid Medium

Sailani

2021

ChemistrySelect

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The kinetic mechanism of oxidation of Chlorpromazine (CPZ) (2-chloro-10-(3-dimethylaminopropyl) phenothiazine) by hexachloroiridate (IV) in acidic aqueous medium has been studied spectrophotometrically using UV-visible spectrophotometer at λ max 525 nm (ε, 10200 dm 3 mol À 1 cm À 1 ). The title reaction is overall second order being first order with respect to each reactant, but to be complicated at higher substrate concentrations. Oxidant has been found as strong electron transfer species to the formation of chlorpromazine radical cation and further respected sulfoxide. The rate also increases with increasing concentration of hydrogen ion and reaction is catalyzed by perchlorate medium. The oxidation is unaffected to variation in ionic strength. Various proposals have been suggested on the basis of reactivity of Ir [IV] and radical cation species. The activation parameters have been evaluated by employing Eyring equation. The oxidation product of CPZ has been confirmed spectrally and a suitable mechanism has been proposed.

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Kinetics and mechanism of electron-transfer reactions: ruthenium(III) chloride catalyzed oxidation of aspartic acid by peroxomonosulfate ion in acidic medium

Cited by 5 publications

References 41 publications

Menthol Oxidation to Menthone: An Important Chemical Transformation

Menthol Oxidation to Menthone: An Important Chemical Transformation

Ruthenium(III) catalyzed oxidation of paracetamol by chloramine‐T in aqueous alkaline medium – A kinetic and mechanistic pathway

Spectrophotometric Kinetic and Mechanistic Investigation of Chlorpromazine Radical Cation with Hexachloroiridate (IV) in Catalyzed Aqueous Acid Medium

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