Compounds > 2-2-5-7-8-pentamethylchroman

2-2-5-7-8-pentamethylchroman and magnesium-chlorate

2-2-5-7-8-pentamethylchroman has been researched along with magnesium-chlorate* in 1 studies

Other Studies

1 other study(ies) available for 2-2-5-7-8-pentamethylchroman and magnesium-chlorate

Article	Year
Electron-transfer mechanism in radical-scavenging reactions by a vitamin E model in a protic medium. Organic & biomolecular chemistry, 2005, Feb-21, Volume: 3, Issue:4 The scavenging reaction of 2,2-diphenyl-1-picrylhydrazyl radical (DPPH.) or galvinoxyl radical (GO.) by a vitamin E model, 2,2,5,7,8-pentamethylchroman-6-ol (1H), was significantly accelerated by the presence of Mg(ClO4)2 in de-aerated methanol (MeOH). Such an acceleration indicates that the radical-scavenging reaction of 1H in MeOH proceeds via an electron transfer from 1H to the radical, followed by a proton transfer, rather than the one-step hydrogen atom transfer which has been observed in acetonitrile (MeCN). A significant negative shift of the one-electron oxidation potential of 1H in MeOH (0.63 V vs. SCE), due to strong solvation as compared to that in MeCN (0.97 V vs. SCE), may result in change of the radical-scavenging mechanisms between protic and aprotic media. Topics: Benzhydryl Compounds; Biphenyl Compounds; Chlorates; Chromans; Electrochemistry; Electron Spin Resonance Spectroscopy; Electron Transport; Free Radical Scavengers; Free Radicals; Hydrazines; Kinetics; Magnesium; Magnesium Compounds; Methanol; Molecular Structure; Oxidation-Reduction; Picrates; Pyridines; Solvents; Vitamin E	2005

Article

Year

Electron-transfer mechanism in radical-scavenging reactions by a vitamin E model in a protic medium.

Organic & biomolecular chemistry, 2005, Feb-21, Volume: 3, Issue:4

The scavenging reaction of 2,2-diphenyl-1-picrylhydrazyl radical (DPPH.) or galvinoxyl radical (GO.) by a vitamin E model, 2,2,5,7,8-pentamethylchroman-6-ol (1H), was significantly accelerated by the presence of Mg(ClO4)2 in de-aerated methanol (MeOH). Such an acceleration indicates that the radical-scavenging reaction of 1H in MeOH proceeds via an electron transfer from 1H to the radical, followed by a proton transfer, rather than the one-step hydrogen atom transfer which has been observed in acetonitrile (MeCN). A significant negative shift of the one-electron oxidation potential of 1H in MeOH (0.63 V vs. SCE), due to strong solvation as compared to that in MeCN (0.97 V vs. SCE), may result in change of the radical-scavenging mechanisms between protic and aprotic media.

Topics: Benzhydryl Compounds; Biphenyl Compounds; Chlorates; Chromans; Electrochemistry; Electron Spin Resonance Spectroscopy; Electron Transport; Free Radical Scavengers; Free Radicals; Hydrazines; Kinetics; Magnesium; Magnesium Compounds; Methanol; Molecular Structure; Oxidation-Reduction; Picrates; Pyridines; Solvents; Vitamin E

2005