Oxidation of bisbenzenechromium(0) by stable phenoxyl radical

1978 ◽  
Vol 27 (3) ◽  
pp. 618-619
Author(s):  
A. Yu. Sorokin ◽  
Yu. A. Shevelev ◽  
G. A. Domrachev
Keyword(s):  
Phenoxyl Radical ◽  
Stable Phenoxyl

Reversible Solution π-Dimerization and Long Multicenter Bonding in a Stable Phenoxyl Radical

2018 ◽  
Vol 24 (56) ◽  
pp. 14906-14910 ◽  
Author(s):  
Nico M. Bonanno ◽  
Prashanth K. Poddutoori ◽  
Kazunobu Sato ◽  
Kenji Sugisaki ◽  
Takeji Takui ◽  
...  
Keyword(s):  
Phenoxyl Radical ◽  
Stable Phenoxyl ◽  
Multicenter Bonding

Solid-state photochemical generation of a very stable phenoxyl-phenoxyl radical pair

1991 ◽  
Vol 113 (16) ◽  
pp. 6329-6330 ◽  
Author(s):  
David A. Modarelli ◽  
Paul M. Lahti ◽  
Clifford George
Keyword(s):  
Solid State ◽  
Radical Pair ◽  
Phenoxyl Radical ◽  
Photochemical Generation ◽  
Stable Phenoxyl

scholarly journals Preparation of solid solution and crystal-glass composite consisting of stable phenoxyl radical and its phenol analogue

ARKIVOC ◽  
2020 ◽  
Vol 2020 (8) ◽  
pp. 58-69
Author(s):  
Taku Kamoto ◽  
Lyu Xinwen ◽  
Junro Yoshino ◽  
Naoto Hayashi
Keyword(s):  
Solid Solution ◽  
Phenoxyl Radical ◽  
Crystal Glass ◽  
Glass Composite ◽  
Stable Phenoxyl

The structure of galvinoxyl, a stable phenoxyl radical

1969 ◽  
Vol 16 (2) ◽  
pp. 145-151 ◽  
Author(s):  
Donald E. Williams
Keyword(s):  
Phenoxyl Radical ◽  
Stable Phenoxyl

scholarly journals Polyfunctional Sterically Hindered Catechols with Additional Phenolic Group and Their Triphenylantimony(V) Catecholates: Synthesis, Structure, and Redox Properties

Molecules ◽  
2020 ◽  
Vol 25 (8) ◽  
pp. 1770 ◽  
Author(s):  
Ivan V. Smolyaninov ◽  
Andrey I. Poddel’sky ◽  
Susanna A. Smolyaninova ◽  
Maxim V. Arsenyev ◽  
Georgy K. Fukin ◽  
...  
Keyword(s):  
Free Ligand ◽  
Phenoxyl Radical ◽  
Redox Properties ◽  
Molecular Structures ◽  
Electron Donors ◽  
Hydrogen Atoms ◽  
X Ray ◽  
Phenolic Group ◽  
Stable Phenoxyl ◽  
Sterically Hindered

New polyfunctional sterically hindered 3,5-di-tert-butylcatechols with an additional phenolic group in the sixth position connected by a bridging sulfur atom—(6-(CH2-S-tBu2Phenol)-3,5-DBCat)H2 (L1), (6-(S-tBu2Phenol)-3,5-DBCat)H2 (L2), and (6-(S-Phenol)-3,5-DBCat)H2 (L3) (3,5-DBCat is dianion 3,5-di-tert-butylcatecolate)—were synthesized and characterized in detail. The exchange reaction between catechols L1 and L3 with triphenylantimony(V) dibromide in the presence of triethylamine leads to the corresponding triphenylantimony(V) catecholates (6-(CH2-S-tBu2Phenol)-3,5-DBCat)SbPh3 (1) and (6-(S-Phenol)-3,5-DBCat)SbPh3 (2). The electrochemical properties of catechols L1–L3 and catecholates 1 and 2 were investigated using cyclic voltammetry. The electrochemical oxidation of L1–L3 at the first stage proceeds with the formation of the corresponding o-benzoquinones. The second process is the oxidation of the phenolic moiety. Complexes 1 and 2 significantly expand their redox capabilities, owing to the fact that they can act as the electron donors due to the catecholate metallocycle capable of sequential oxidations, and as donors of the hydrogen atoms, thus forming a stable phenoxyl radical. The molecular structures of the free ligand L1 and complex 1 in the crystal state were determined by single-crystal X-ray analysis.

ChemInform Abstract: REARRANGEMENT IN THE FREE PHENOXYL RADICAL OF THE CARBORANE SERIES

1978 ◽  
Vol 9 (14) ◽  
Author(s):  
V. B. PANOV ◽  
E. P. IVAKHNENKO ◽  
O. YU. OKHLOBYSTIN
Keyword(s):  
Phenoxyl Radical

scholarly journals Hydroxycinnamic Acid Antioxidants: An Electrochemical Overview

2013 ◽  
Vol 2013 ◽  
pp. 1-11 ◽  
Author(s):  
José Teixeira ◽  
Alexandra Gaspar ◽  
E. Manuela Garrido ◽  
Jorge Garrido ◽  
Fernanda Borges
Keyword(s):  
Rational Design ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Phenoxyl Radical ◽  
Free Radical Scavenger ◽  
Hydroxycinnamic Acid ◽  
Hydroxycinnamic Acids ◽  
Radical Scavenger ◽  
Redox Potentials ◽  
Structure Property

Hydroxycinnamic acids (such as ferulic, caffeic, sinapic, andp-coumaric acids) are a group of compounds highly abundant in food that may account for about one-third of the phenolic compounds in our diet. Hydroxycinnamic acids have gained an increasing interest in health because they are known to be potent antioxidants. These compounds have been described as chain-breaking antioxidants acting through radical scavenging activity, that is related to their hydrogen or electron donating capacity and to the ability to delocalize/stabilize the resulting phenoxyl radical within their structure. The free radical scavenger ability of antioxidants can be predicted from standard one-electron potentials. Thus, voltammetric methods have often been applied to characterize a diversity of natural and synthetic antioxidants essentially to get an insight into their mechanism and also as an important tool for the rational design of new and potent antioxidants. The structure-property-activity relationships (SPARs) correlations already established for this type of compounds suggest that redox potentials could be considered a good measure of antioxidant activity and an accurate guideline on the drug discovery and development process. Due to its magnitude in the antioxidant field, the electrochemistry of hydroxycinnamic acid-based antioxidants is reviewed highlighting the structure-property-activity relationships (SPARs) obtained so far.

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