Substituted Aromatic Anils - A Kinetic Study using Pyridinium Chlorochromate (PCC)

 
 
International Journal of Biotech Trends and Technology (IJBTT)
 
© 2012 by IJBTT Journal
Volume - 2 Issue - 2                          
Year of Publication : 2012
Authors :Dr.V.Krishnasamy, S.Rosy Christy

Dr.V.Krishnasamy, S.Rosy Christy "Substituted Aromatic Anils - A Kinetic Study using Pyridinium Chlorochromate (PCC)",International Journal of Biotech Trends and Technology (IJBTT), V2(2):7-11 April - June 2012. Published by Seventh Sense Research Group.

Abstract

The kinetics of co - oxidation study of anils and oxalic acid by PCC in aqueous acetic acid had been studied under different experimental conditions. The order is one with respect to oxalic acid , anil , and PPC. The order is 1.5 with respect to [ H+ ]. The oxidation was found to increase with increase of perchloric oxalic acids. The rate of the reaction was increased by the addition of NaClo4 . The protonated species of the oxidant is involved in the rate - determining step. The effect of various meta and para -substituted anils on the reaction rate had been studied at four different temperatures viz., 35 , 40 , 45 and 50 0 c and the thermodynamic parameters are also calculated. The analysis of rate constants of ortho substituents reveas that the localized and delocalized effects are major components while steric effect place only the minor role.

References

1.F.H.Westheimer.
2. G.T.E.Graham and F.H.Westheimer , J.Am. Chem. Soc., 1958 , 80 : 3030.
3. J.O.Edwards , Chem. Rev., 1952 , 50 : 455.
4. K.B.wiberg and T.Mill , J. Am. Chem. Soc., 1958 , 80 : 3032.
5.M.Kodama -Bulletin of Chemical Society of Japan ,1969.

Keywords
anils , PCC , rate , parameters , localized and delocalized.