Kinetics and Mechanism of the Oxidation of Alcohols by Pyridinium Chlorochromate
1978; Oxford University Press; Volume: 51; Issue: 9 Linguagem: Inglês
10.1246/bcsj.51.2732
ISSN1348-0634
Autores Tópico(s)Thermal and Kinetic Analysis
ResumoAbstract The kinetics of the oxidation of ten primary alcohols by pyridinium chlorochromate has been studied. The main product of the oxidation is the corresponding aldehyde. The reaction is of first order with respect to the concentration of the alcohol and oxidant. The reaction is catalysed by acid, the catalysed reaction being nearly first order in acidity. The kinetic isotope effect, kH⁄kD is 5.71 at 303 K for ethanol. The reaction does not induce polymerisation of acrylonitrile. The reaction constant ρ* for the uncatalysed and acid-catalysed oxidations have the values −1.93 and −1.75 at 303 K respectively. Probable mechanisms are discussed.
Referência(s)