ISSN:
0894-3230
Keywords:
Primary alcohols
;
secondary alcohols
;
oxidation
;
cerium (IV)
;
chromium(III) catalysis
;
Chemistry
;
Theoretical, Physical and Computational Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
The cerium(IV) oxidation of isobutanol, isoamyl alcohol isopropyl alcohol, and secondary butanol catalysed by chromium(III) was studied in sulphuric and perchloric acid mixture at 30 °C. The reaction was found to proceed with the formation of a chromium(IV) intermediate followed by its complexation with alcohol. The complex thus formed decomposed into an aldehyde or ketone by a two-electron hydride ion transfer. The formation constants for complexes were determined from Michaelis-Menten plots. The accelerating effect of [H+] on the reaction is attributed to the formation of active species, HCe(SO4)3- and HAlcohol+, of the oxidant and alcohol, respectively. The activation parameters were also determined and an isokinetic plot was found to be linear. © 1998 John Wiley & Sons, Ltd.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
