76164-97-1Relevant academic research and scientific papers
Kinetics of the liquid-phase oxidation of 2-hydroxycyclohexanone
Akimov,Puchkov,Nepomnyashchikh,Perkel'
, p. 270 - 278 (2013/07/26)
The kinetics of oxygen uptake in the azobisisobutyronitrile-initiated oxidation of 2-hydroxycy-clohexanone (RCH(OH)C(O)R) at 323 K has been investigated (chlorobenzene solvent, [RCH(OH)C(O)R] = 0.15-1.30 mol/L, initiation rate of w i = 0.016-0.473 mol L-1 s -1). The effective oxidizability parameter k p, eff(2k t,eff)-0.5 has been determined by solving the inverse kinetic problem using the entire data array obtained while varying [RCH(OH)C(O)R] and w i. The rate constants of chain propagation and termination and the equilibrium constant of the addition of the hydroxyperoxyl radical to the ketoalcohol have been derived from the dependence of the oxidizability parameter on the substrate concentration. The rate constant of bimolecular chain initiation has been calculated to be k 0 = 9.7 × 10-7 L mol-1 s-1. The ratio of the rate constants of quadratic-law peroxyl radical recombination reactions without and with chain termination (k eff′/k t,eff′) increases with increasing [RCH(OH)C(O)R], passes through a maximum at a substrate concentration of 0.8 mol/L, and then falls off. It is demonstrated that this effect is due to the variation of the proportions of the hydroperoxyl and organic (1-hydroxy-2-oxocyclohexylperoxyl or 1,2-dihydroxy-1-cyclo- hexylperoxyl) radicals in the reaction medium.
NONCHAIN CONVERSION OF alpha -DIKETONES AND TRANSACYLATION OF CARBOXYLIC-ACID ANHYDRIDES UNDER AUTOXIDATION CONDITIONS.
Perkel',Freidin,Neginskaya,Stolyankova,Ivanova
, p. 1444 - 1449 (2007/10/02)
The present investigation produced the following conclusion. The oxidation of 8,9-hexadecanedione by peroxylauric acid in benzene solution conforms to the kinetic equation for a second-order reaction. The oxidation is accompanied by transacylation of the caprylic anhydride formed with lauric acid. The anhydrides formed by transcylation take part in the formation of ester products of autoxidation. Lauric acid actively catalyzes the reaction of 8,9-hexadecanedione with peroxylauric acid.
