Kinetics of the oxidative cleavage of .alpha.-phenylbenzoins by alkaline hypobromite in aqueous dioxane

1975 ◽  
Vol 40 (3) ◽  
pp. 318-322 ◽  
Author(s):  
Yoshiro Ogata ◽  
Kenji Nagura
Keyword(s):  
Oxidative Cleavage ◽  
Aqueous Dioxane ◽  
Kinetics Of

THE ALKALINE CLEAVAGE OF o-NITROBENZYLTRIMETHYLSILANE SOLVENT EFFECTS IN THE DIOXANE–WATER SYSTEM

1963 ◽  
Vol 41 (6) ◽  
pp. 1525-1530 ◽  
Author(s):  
H. R. Allcock
Keyword(s):  
Transition State ◽  
Solvent Effects ◽  
Water System ◽  
Solvent Polarity ◽  
High Water ◽  
Aqueous Dioxane ◽  
Alkaline Cleavage ◽  
Rate Of Reaction ◽  
Kinetics Of

The kinetics of alkaline cleavage of o-nitrobenzyltrimethylsilane were examined in aqueous dioxane media. At high water concentrations, increases in solvent polarity retard the cleavage, as required by a mechanism involving charge dispersion in the transition state. At high dioxane concentrations, solvent polarity increases are accompanied by increases in the rate of reaction, a result which may reflect association between the solvent components.

Kinetics of the reaction of p-dinitrobenzene with basic hydrogen peroxide

1987 ◽  
Vol 65 (2) ◽  
pp. 251-255 ◽  
Author(s):  
Raymond A. Heller ◽  
Richard Weiler
Keyword(s):  
Hydrogen Peroxide ◽  
Strong Evidence ◽  
Nmr Spectra ◽  
Visible Region ◽  
Kinetic Studies ◽  
Aqueous Dioxane ◽  
First Time ◽  
Kinetics Of ◽  
Basic Hydrogen Peroxide ◽  
C Nmr

Kinetic studies of the reaction of p-dinitrobenzene with H2O2 and NaOH in 10%, 30%, and 50% aqueous dioxane have been carried out at 30.0 °C. The reaction involves the formation of a reasonably stable intermediate which absorbs strongly in the visible region, with the rate of formation being about 18 times faster than the rate of conversion to final product which is p-nitrophenol. Proton and 13C nmr spectra of the kinetic solution provide strong evidence that the intermediate is p-nitrophenyl hydroperoxide, apparently the first time that a true aryl peroxide species has been identified.

Oxidative cleavage of cyclopropanes. VI. Kinetics of the cleavage of arylcyclopropanes by lead tetraacetate

1969 ◽  
Vol 91 (4) ◽  
pp. 971-975 ◽  
Author(s):  
Robert J. Ouellette ◽  
Daniel Miller ◽  
Aubrey South ◽  
Richard D. Robins
Keyword(s):  
Oxidative Cleavage ◽  
Lead Tetraacetate ◽  
Kinetics Of
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