Premium
Kinetics and mechanism of the oxidation of some cyclic and acyclic ketones by dodecatungstocobaltate(III)—A comparative study
Author(s) -
Gupta Mala,
Saha Swapan K.,
Banerjee Pradyot
Publication year - 1990
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/kin.550220107
Subject(s) - chemistry , cyclohexanone , enol , kinetics , ketone , keto–enol tautomerism , butanone , first order , aqueous solution , mechanism (biology) , reaction rate constant , organic chemistry , medicinal chemistry , catalysis , philosophy , physics , mathematics , epistemology , quantum mechanics , solvent
The kinetics of oxidation of cyclohexanone(chxn), 2‐butanone(but), and 1,3‐dihydroxy‐2‐propanone (dhp) have been investigated in aqueous acidic media. A first‐order dependence in complex is obtained at high acid and low oxidant concentration for these ketones. However, a zero‐order rate prevails at high oxidant and low acid concentration, and this rate has been shown to be the acid catalyzed enolization rate of the ketone. A general rate expression has been derived to explain these behaviors and plausible mechanism has been offered by assuming the enol as the reactive species.