Single-Electron Transfer in σ-Complexation Reactions of 2,6-Dimethoxy-3,5-dinitropyridine with Para-X-phenoxide Anions in Aqueous Solution

2016 ◽  
Vol 48 (9) ◽  
pp. 523-530 ◽  
Author(s):  
Faouzi Mahdhaoui ◽  
Nejeh Dhahri ◽  
Taoufik Boubaker
Keyword(s):  
Aqueous Solution ◽  
Electron Transfer ◽  
Single Electron ◽  
Single Electron Transfer ◽  
Complexation Reactions

Kinetics and mechanism of phenoxide anions addition to 4-nitrobenzofurazan in aqueous solution

2017 ◽  
Vol 95 (7) ◽  
pp. 723-728 ◽  
Author(s):  
S. Ben Salah ◽  
T. Boubaker ◽  
R. Goumont
Keyword(s):  
Aqueous Solution ◽  
Electron Transfer ◽  
Rate Constants ◽  
Second Order ◽  
Kinetics And Mechanism ◽  
Single Electron ◽  
Single Electron Transfer ◽  
Hydroxide Ion ◽  
Order Rate

Second-order rate constants (k1) for the σ-complexation of 4-nitrobenzofurazan 1 with four 4-X-substituted phenoxide anions 2a–2d (X = OCH3, CH3, H and Cl) were measured in aqueous solution at 20 °C. Using this series of phenoxide anions as a reference, the electrophilicity parameter (E) of this electrophile 1 has been evaluated according to Mayr’s approach. With the E value of –9.42, Mayr’s equation was found to correctly predict the rate constants for the reactions of 1 with hydroxide ion in H2O and a 1:1 ratio of H2O to CH3CN. However, the large βnuc value of 1.12 obtained in the present work is clearly consistent with a single electron transfer (SET) mechanism.

Reversal of Polarity by Catalytic SET Oxidation: Synthesis of Azabicyclo[m.n.o]alkanes via Chemoselective Reduction of Amidines

2021 ◽  
Author(s):  
Sundarababu Baskaran ◽  
Kirana D V ◽  
Kanak Kanti Das
Keyword(s):  
Electron Transfer ◽  
Stereoselective Synthesis ◽  
Single Electron ◽  
Single Electron Transfer ◽  
Catalytic Method ◽  
One Pot ◽  
Oxidative System ◽  
Oxidation Synthesis

A one-pot catalytic method has been developed for the stereoselective synthesis of cyclopropane-fused cyclic amidines using CuBr2/K2S2O8 as an efficient single electron transfer (SET) oxidative system. The generality of this...

Evidence for single electron transfer in the reaction of alkoxides with alkyl halides

1984 ◽  
Vol 25 (45) ◽  
pp. 5107-5110 ◽  
Author(s):  
E.C. Ashby ◽  
Dong-Hak Bae ◽  
Won-Suh Park ◽  
Robert N. Depriest ◽  
Wei-Yang Su
Keyword(s):  
Electron Transfer ◽  
Alkyl Halides ◽  
Single Electron ◽  
Single Electron Transfer
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