scholarly journals A pulse radiolysis study on the reactions of hydroxyl radical and sulfate radical anion with guanidine derivatives in aqueous solution

2008 ◽  
Vol 461 (4-6) ◽  
pp. 300-304 ◽  
Author(s):  
Shota Morimoto ◽  
Takeo Ito ◽  
Shin-ichi Fujita ◽  
Sei-ichi Nishimoto
Keyword(s):  
Aqueous Solution ◽  
Hydroxyl Radical ◽  
Radical Anion ◽  
Pulse Radiolysis ◽  
Sulfate Radical ◽  
Guanidine Derivatives ◽  
Sulfate Radical Anion

K2S2O8 activation by glucose at room temperature for synthesis and functionalization of heterocycles in water

2021 ◽  
Author(s):  
Joydev K. Laha ◽  
Mandeep Kaur Hunjan
Keyword(s):  
Organic Synthesis ◽  
Radical Anion ◽  
Room Temperature ◽  
Kinetic Studies ◽  
Sulfate Radical ◽  
Persulfate Activation ◽  
Sulfate Radical Anion

While persulfate activation at room temperature using glucose is primarily focused on kinetic studies of sulfate radical anion, utilization of this protocol in organic synthesis is rarely demonstrated. We reinvestigated...

Conductometric Pulse Radiolysis Study on the Reaction of the Solvated Electron with 5-Bromouracil in Aqueous Solutions at Different pH Values

1974 ◽  
Vol 29 (1-2) ◽  
pp. 86-88b ◽  
Author(s):  
Burkhard O. Wagner ◽  
Herbert Klever ◽  
Dietrich Schulte-Frohlinde
Keyword(s):  
Aqueous Solution ◽  
Hydrogen Atom ◽  
Aqueous Solutions ◽  
Hydroxyl Radical ◽  
Rate Constant ◽  
Pulse Radiolysis ◽  
Solvated Electron ◽  
Ph Values

To study the reaction of the solvated electron with 5-bromouracil an aqueous solution has been examined by conductometric pulse radiolysis at pH values between 4.68 and 8.74. Alcohol was added to scavenge the hydrogen atom and the hydroxyl radical. G(Br—) = (2.64 ± 0.08)/100 eV was found to be independent of the pH. The mobility of the bromouracil mono-anion was measured to be (2.7 ± 0.2) 10-4 cm2 V-1 s-1 at 20°C, and the rate constant of reaction (3b) was determined to be k(H+ BrUr-) = (2.3 ± 0.2) 1010 I mole-1 s-1*.

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