A Two Stage Oxidative Decarboxylation of di carboxylic acid by Pyridiniumdichromate in perchloric acid media

Shikha Soni, Shilpa Rathore B K Dangarh

doi:10.15520/.v3i0.14

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A Two Stage Oxidative Decarboxylation of di carboxylic acid by Pyridiniumdichromate in perchloric acid media

Shikha Soni, Shilpa Rathore B K Dangarh

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B K Dangarh, S. S. S. R. (2016). A Two Stage Oxidative Decarboxylation of di carboxylic acid by Pyridiniumdichromate in perchloric acid media. Journal of Medical Biomedical and Applied Sciences, 3. https://doi.org/10.15520/.v3i0.14

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Abstract

Oxidation of di carboxylic acid viz- tartaric acid by pyridiniumdichromate (PDC) in perchloric acid medium has been studied. Active oxidizing species involved is protonated PDC. First order plot log (a-x) versus time is broken in two straight lines. Some induction period is also observed. Effect of concentration of substrate, PDC, HClO4, Mn (II), Ce (III) and ionic strength has been investigated. Thermodynamic parameters have been evaluated. Energy of activation is 53.14 and 56.58 kJ mol-1 for two successive stages of oxidation. Entropy of activation is low and negative. Although the activation energy does not correspond to C-C bond breaking, but the reaction products indicate C-C bond breaking. Suitable mechanism has been proposed involving complex formation.

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Singh Vijay P., Pandey Indira M and Sharma Subhas B.:J. Indian Chem. Soc, 1985 LXII, 64, 1.
Jeevanandanam J, Gopalan R. and Sivaramkrishnan R.: J.Indian Chem.Soc.1997. 74, 3,190.
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Hiran B. L., Jain R. and Nalwaya N.: Oxid. Commun. 2003 .26 (4), 561.
Grunwal E., Heller A and Klein F. S. J. Chem. Soc., 1957. 2064.
Zimmermans H. E.: Physico-Chemical Constants of Pure Organic Comp. Elsevir P.1950, 383
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Laidler K. J. and Eyring H.: Acad. Sci. New York 1940, 39,303.
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Hiran B. L. and Chaturvedi G.: Oxid. Commun., 2003, 26(4), 553.
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Thangarajan A. and Gopalan R.: J. Indian Chem. Soc., 1990, 67,453.
Bakore G.V. and Narain S. : Z.Physik. Chem. (Leipzig) , 1964, 8,227.
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Kabir-Ud-Din, Shakeel Iqubal S. M.; Khan Zaheer; Indian Journal of Chemistry, Sect. A 2005 44, 2455-2461.

[1] Singh Vijay P., Pandey Indira M and Sharma Subhas B.:J. Indian Chem. Soc, 1985 LXII, 64, 1.

[2] Jeevanandanam J, Gopalan R. and Sivaramkrishnan R.: J.Indian Chem.Soc.1997. 74, 3,190.

[3] Mali M., Knodaska S.N., Patel N.T. : Asian Journal of Chemistry, 2004 16, 2.

[4] Hiran B. L., Jain R. and Nalwaya N.: Oxid. Commun. 2003 .26 (4), 561.

[5] Grunwal E., Heller A and Klein F. S. J. Chem. Soc., 1957. 2064.

[6] Zimmermans H. E.: Physico-Chemical Constants of Pure Organic Comp. Elsevir P.1950, 383

[7] Fevre Le: Trans Faraday Soc. 1938, 34.1127

[8] Wieberg K. B. and Evans T. R.: J. Am. Chem. Soc., 1958, 80, 3019.

[9] Laidler K. J. and Eyring H.: Acad. Sci. New York 1940, 39,303.

[10] Nalwaya Niranjan, Chand Kailash and Hiran B. L.; Afinidad 2003, 60,503.

[11] Hiran B. L. and Chaturvedi G.: Oxid. Commun., 2003, 26(4), 553.

[12] Robinson R. A. and Stokes R. H.: "Electrolytic Solutions "Butterworth Scientific Publications, London, 1955.

[13] Thangarajan A. and Gopalan R.: J. Indian Chem. Soc., 1990, 67,453.

[14] Bakore G.V. and Narain S. : Z.Physik. Chem. (Leipzig) , 1964, 8,227.

[15] Hiran B. L., Nalwaya N. and Bikaneria S.L.: Afinidad, 2003 60 (505) 227.

[16] Kabir-Ud-Din, Shakeel Iqubal S. M.; Khan Zaheer; Indian Journal of Chemistry, Sect. A 2005 44, 2455-2461.

A Two Stage Oxidative Decarboxylation of di carboxylic acid by Pyridiniumdichromate in perchloric acid media

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