eng Ansari Education and Research Society Journal of Ultra Scientist of Physical Sciences July 2018 30 7 88 91 http://dx.doi.org/10.22147/jusps-B/300703 1483 article Oxidative Transformation of Mandelic acid by Pyridiniumdichromate in non-aqueous medium kinetic and mechanistic study RAKESH KUMAR SHARMA 1 SAGAR SINGH THAKUR 2 B.K. DANGARH 3 Asst. prof. of Chemistry Shree H.C.C. College Bhanpura (India) Asst. prof. of Chemistry, Govt. college mandleshwar (India) Asst. prof. of Chemistry, Govt. P.G. College, Neemuch (India) <p style="text-align:justify">The alpha&ndash;hydroxy acids (AHA) are naturally occurring organic acid. The oxidation of mandelic acid by pyridiniumdichromate has been studied spectrophotometrically in presence of p-toluenesulphonic acid (PTSA) in dimethylsulphoxide (DMSO) as a solvent. The rate of reaction decrease &amp; with an increase in polarity of solvent indicating an ion-dipole interaction in the slow step. The reaction exhibit no primary kinetic isotope effect. The activation parameters have been evaluated.</p> https://ultraphysicalsciences.org/paper/1483/ Kinetics Mandelic acid Oxidation