One-electron reduction of methyl(trifluoromethyl)dioxirane by iodide ion. Evidence for an electron-transfer chain reaction mediated by the superoxide ion

1992 ◽  
Vol 114 (22) ◽  
pp. 8345-8349 ◽  
Author(s):  
Waldemar Adam ◽  
Gregorio Asensio ◽  
Ruggero Curci ◽  
Maria Elena Gonzalez-Nunez ◽  
Rossella Mello
Keyword(s):  
Electron Transfer ◽  
Superoxide Ion ◽  
Chain Reaction ◽  
Electron Transfer Chain ◽  
Iodide Ion ◽  
Electron Reduction ◽  
Transfer Chain

scholarly journals Electron transfer chain reaction of the extracellular flavocytochrome cellobiose dehydrogenase from the basidiomycete Phanerochaete chrysosporium

FEBS Journal ◽  
2005 ◽  
Vol 272 (11) ◽  
pp. 2869-2877 ◽  
Author(s):  
Kiyohiko Igarashi ◽  
Makoto Yoshida ◽  
Hirotoshi Matsumura ◽  
Nobuhumi Nakamura ◽  
Hiroyuki Ohno ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Phanerochaete Chrysosporium ◽  
Cellobiose Dehydrogenase ◽  
Chain Reaction ◽  
Electron Transfer Chain ◽  
Transfer Chain

The course of reaction of 4-nitrobenzyl bromide and 5-nitrofurfuryl bromide with bases: Operation of anion-radical mechanism

1982 ◽  
Vol 47 (5) ◽  
pp. 1334-1338 ◽  
Author(s):  
Josef Prousek
Keyword(s):  
Electron Transfer ◽  
Reaction Mechanism ◽  
Anion Radical ◽  
Radical Mechanism ◽  
Charge Transfer Complexes ◽  
Chain Reaction ◽  
Electron Transfer Chain ◽  
Initial Stage ◽  
Transfer Chain ◽  
Ethylene Derivative

4-Nitrobenzyl bromide (I) - contrary to 5-nitrofurfuryl bromide (V) - does not react with hard bases in an electron-transfer chain reaction, giving instead product of SN2 reaction. However, its reaction with soft bases affords 1,2-bis(4-nitrophenyl)ethane (III) as anion-radical mechanism product. 5-Nitrofurfuryl bromide reacts with hard bases to give 1,2-bis(5-nitro-2-furyl)ethylene (VI) whereas with soft bases 1,2-bis(5-nitro-2-furyl)ethane (VII) is formed. The derivative VII on reaction with ethanolic NaOH reacts by α-E1cB mechanism under formation of the ethylene derivative VI. The derivative III does not react by this mechanism. The solvent and base effects on the formation of charge-transfer complexes in the initial stage of these reactions in relation to the reaction mechanism are discussed.

scholarly journals The reduction of α-bromocamphor by tertiary amines

1992 ◽  
Vol 70 (1) ◽  
pp. 173-176 ◽  
Author(s):  
Jian Jeffrey Chen ◽  
Dennis D. Tanner
Keyword(s):  
Electron Transfer ◽  
Free Radical ◽  
Chain Termination ◽  
Tertiary Amines ◽  
Chain Mechanism ◽  
Chain Reaction ◽  
Radical Chain ◽  
Electron Transfer Chain ◽  
Chain Sequence ◽  
Transfer Chain

The reduction of α-bromocamphor to camphor by N,N-dimethylaniline (DMA) at high temperatures (> 200 °C) proceeds via a free radical chain sequence. The reduction can be effected with DMA or triethylamine (TEA) in acetonitrile at much lower temperatures in the presence of di-tert-butylperoxide. The chain termination step is the dimerization of the camphor radical. These reductions presumably constitute an example of an electron transfer chain mechanism involving a tertiary amine as the chain propagating species. Keywords: reduction, tertiary amines, α-bromocamphor, chain reaction.

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