Studies on the Kinetics and Mechanism of Oxidation of Nitrones by Pyrazolinium Dichromate in aqueous DMSO medium

Studies on the Kinetics and Mechanism of Oxidation of Nitrones by Pyrazolinium Dichromate in aqueous DMSO medium

Dr. M. Sekar

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A. Santhi

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J. Venkatesan

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V. Thanikachalam

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Government Arts College, Chidamabaram, India

Studies on the Kinetics and Mechanism of Oxidation of Nitrones by Pyrazolinium Dichromate in aqueous DMSO medium

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Abstract

The kinetics and mechanism of oxidation of N, α-diphenylnitrones by some substituted nitrones by Pyrazolinium dichromateyielding benzaldehyde and nitrosobenzene in aqueous dimethyl sulphoxidemedium have been investigated. First order dependence with respect to both [PyDC] and [NO]. The compound was prepared and purity of the oxidant was estimated by iodometric method. The reaction is fractional order with respect to [H + ]. Electron-releasing substituents increase the rate of the reaction and electron withdrawing substituents decrease the rate of the reaction. No polymerisation observed with acrylamide ruling out a free radical mechanism. There was no discernible effect with increasing in ionic strength but the rate of oxidation decreased with decreasing dielectric constant of the medium. Addition of MnSO 4 had a significant and acrylonitrile no effect on the reaction rate.

References

27 Cites in Article

Reference Format

S Sundaram,M Amutha,R Sockalingam (1996). Unknown Title.
G Mangalam,S Sundaram (1998). Unknown Title.
E Corey,Greg Schmidt (1979). Useful procedures for the oxidation of alcohols involving pyridinium dichromate in aprotic media.
J Sutherland,D Widdowson (1964). Unknown Title.
M Uma,M Gopalakrishnan,J Jayabharathi,V Thanikachalam (1995). Kinetics of oxidation of some substituted N,a-diphenylnitrones by bromamine -B in the presence of acid medium.
M Uma,M Gopalakrishnan,J Jayabharathi,V Thanikachalam (1996). Kinetics of oxidation of some substituted N,a-diphenylnitrones by bromamine -B in the presence of acid medium.
M Gopalakrishnan,J Jayabharathi,V Thanikachalam (1999). Separation of electronic and steric effects: oxidation of ortho substituted N,adiphenylnitrones by pyridiniumfluoro chromate in aqueous DMF medium.
S Manivarman,G Rajarajan,G Manikandan,M Sekar,J Jayabharathi,V Thanikachalam (2007). A mechanistic investigation of the oxidation of N,α-diphenylnitrones by dichloramine-T in aqueous acetonitrile medium - a non-linear Hammett plot.
A Vogel (1989). A Text Book of Practical Organic Chemistry.
A Vogel (1989). A Text Book of Practical Organic Chemistry.
I Kolthoff,E Carr (1953). Volumetric Determination of Persulfate in Presence of Organic Substances.
K Balasubramanian,V Prathipa (1986). Unknown Title.
A Chatterjee,S Mukherjee (1957). Unknown Title.
Kenneth Wiberg,Theodore Mill (1958). The Kinetics of the Chromic Acid Oxidation of Benzaldehyde.
K Wiberg (1965). Oxidation in Organic Chemistry.
F Westheimer (1949). The Mechanisms of Chromic Acid Oxidations..
M Beck,D Durham (1971). The effect of EDTA on the hydrazine-chromium(VI) reaction.
K Laider,Kinetics (1982). Unknown Title.
E Amis (1967). Solvent effects on reduction rates and mechanism.
Abhinav Bhandari,Pradeep Sharma,Kalyan Banerji (2001). Kinetics and Mechanism of the Oxidation of Organic Sulfides by Quinolinium Fluorochromate.
N Gilberson,G Gallup,M Jones (1954). Unknown Title.
J Leffler (1955). Entropy requirements of the hammett relationship.
O Exner (1964). On the enthalpy-entropy-relationship.
O Exner (1964). Concerning the Isokinetic Relationship.
V Palm,R Vizgest (1962). Unknown Title.
M Malawski,Rozhiki Chem (1964). Unknown Title.
L Hammett (1940). Physical Organic Chemistry.

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Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

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How to Cite This Article

Dr. M. Sekar. 2015. \u201cStudies on the Kinetics and Mechanism of Oxidation of Nitrones by Pyrazolinium Dichromate in aqueous DMSO medium\u201d. Global Journal of Science Frontier Research - B: Chemistry GJSFR-B Volume 15 (GJSFR Volume 15 Issue B4).

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GJSFR Volume 15 Issue B4

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Journal Specifications

Crossref Journal DOI 10.17406/GJSFR

Print ISSN 0975-5896

e-ISSN 2249-4626

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Classification

GJSFR-B Classification FOR Code: 030703

Submission ReceivedMay 28, 2015
Peer Review Double Blind
Handling Editor
Accepted June 25, 2015
Published July 9, 2015

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v1.2

Issue date

September 4, 2015

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Article Matrices

Total Score: 104

Country: India

Subject: Global Journal of Science Frontier Research - B: Chemistry

Authors: M. Sekar, A. Santhi, J. Venkatesan, V. Thanikachalam (PhD/Dr. count: 0)

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Total Views: 4223

Total Downloads: 2122

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