We wish to report rate constants for the reaction of superoxide anion radical, 02', with various aliphatic bromides in dimethylsulfoxide (DMSO) solution. The results suggest that 02; is one of the most potent nucleophiles yet studied. Superoxide ion is the radical anion derived by adding an electro
The reaction of superoxide anion radical with electron poor olefins
β Scribed by Aryeh A. Frimer; Ionel Rosenthal; Shmaryahu Hoz
- Publisher
- Elsevier Science
- Year
- 1977
- Tongue
- French
- Weight
- 218 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0040-4039
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π SIMILAR VOLUMES
Cyclohex-2-en-l-ones with available acidic hydrogens undergo base catalyzed autoxidation in the presence of KO2/18-crown-6 in benzene yielding 2-hydroxycyclohexa-2,5-dien-lones in the case of 4,4-and 5,5\_disubstituted substrates and 2,3-epoxycyclohexanones in the case of 6,6-disubstituted analogs;
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The superoxide anion has been suggested as a probably intermediate in several oxidation processes.
3-and 4-Hydroxycoumarin (& and 2) as well as 2-hydroxy-2,5-cyclohexadien-l-ones a-6 were reacted with K02/18-crown-6 in benzene. Initial deprotonation of the enol hydrogen was followed by nucleophilic attack by 0 sulting anion (for 4 and ,&-q). A convenieng CONDITION\* YIELD (2) && KO (5 hr) KOS (16
Addition of KO 2 in dimethyl sulfoxide (DMSO) to the in vitro bacterial luciferase reaction subsequent to its initiation resulted in a biphasic decay of light emission. The first and more rapid phase is attributed to quenching by DMSO. With DMSO alone the continuing decay is kinetically the same as