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  DOI Prefix   10.20431


 

International Journal of Advanced Research in Chemical Science
Volume 5, Issue 2, 2018, Page No: 9-13

Nicotinium Dichromate Oxidation of Mandelic Acid and P-Chloromandelic Acid

Shakuntala Mishra1,M.N.Swami2,Nagmani Manikpuri3,Arvind Prasad Dwivedi4

1.Department of Chemistry, Govt. P.G. College Singrauli (M.P.) India.
2.Department of Chemistry, R.V.P.S. Govt. College Umaria M.P.
3.Department of Chemistry, Govt. P.G. Nehru College Burhar, Distt. Shahdol M.P.
4.Department of Chemistry, Sanjay Gandhi Smrati Govt. Auto. P.G. College Sidhi M.P.

Citation : Shakuntala Mishra,M.N.Swami,Nagmani Manikpuri,Arvind Prasad Dwivedi, Nicotinium Dichromate Oxidation of Mandelic Acid and P-Chloromandelic Acid International Journal of Advanced Research in Chemical Science 2018, 5(2) : 9-13

Abstract

Nicotinium dichromate (NDC) oxidation of mandelic acid and P-chloromandelic acid in aqueous acetic acid medium in presence of sulphuric acid lead to the formation of corresponding benzaldehyde and P-chlorobenzaldehyde as the main products. The reaction follows fractional order with respect to substrate and first-order with respect to the oxidant. Increase in percentage of acetic acid inhibited the rate of reaction. The reaction is catalysed by acid. The proposed intermediate involves a complex mechanism. The derived rate law was verified graphically. The thermodynamic and activation parameters for the oxidation have been determined and discussed.


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