ISSN

0974-4150 (Online)
0974-4169 (Print)


Author(s): Amol P. Kharche, Indu M. Shastri

Email(s): indushastri@rediffmail.com

DOI: 10.5958/0974-4150.2018.00032.9   

Address: Amol P. Kharche, Dr. Indu M. Shastri*
Department of Chemistry, R.D. and S.H. National College and S.W.A. Science College, Bandra (W), Mumbai-400050, India.
*Corresponding Author

Published In:   Volume - 11,      Issue - 1,     Year - 2018


ABSTRACT:
The oxidation of fumaric, maleic, crotonic and cinnamic acids by Benzimidazolium dichromate (BIDC) in dimethylsulphoxide (DMSO) leads to the formation of corresponding epoxide. The reaction is of first order with respect to BIDC and the unsaturated acid. p-toluene sulphonic acid (TsOH) was used as a source of hydrogen ions due to non-aqueous nature of the solvents. The reaction is catalysed by hydrogen ions. The hydrogen-ion dependence has the form: kobs = a + b [H+]. The oxidation of these acids was studied in nineteen different organic solvents. The solvent effect was analyzed by Kamlet’s and Swain’s multiparametric equations. Solvent effect indicated the importance of the cation-solvating power of the solvent. A mechanism involving a three-centre transition state has been postulated.


Cite this article:
Amol P. Kharche, Indu M. Shastri. Kinetics and mechanism of the oxidation of some unsaturated organic acids by Benzimidazolium Dichromate. Asian J. Research Chem. 2018; 11(1):153-158. doi: 10.5958/0974-4150.2018.00032.9

Cite(Electronic):
Amol P. Kharche, Indu M. Shastri. Kinetics and mechanism of the oxidation of some unsaturated organic acids by Benzimidazolium Dichromate. Asian J. Research Chem. 2018; 11(1):153-158. doi: 10.5958/0974-4150.2018.00032.9   Available on: https://ajrconline.org/AbstractView.aspx?PID=2018-11-1-32


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