Multidecagram Scale Synthesis of an Endoperoxide, Precursor of Anti-malarial and Anti-leishmanial Agents, via Free-Radical [2 + 2 + 2] Annulation with Molecular Oxygen

2021 ◽  
Author(s):  
Davide Lardani ◽  
Roger Marti ◽  
Arianna Quintavalla ◽  
Marco Lombardo ◽  
Claudio Trombini
Keyword(s):  
Free Radical ◽  
Molecular Oxygen

Manganese(III)-based oxidative free-radical reaction of α-allyl-β-keto ester with molecular oxygen

1993 ◽  
Vol 34 (52) ◽  
pp. 8509-8512 ◽  
Author(s):  
Takashi Ohshima ◽  
Mikiko Sodeoka ◽  
Masakatsu Shibasaki
Keyword(s):  
Free Radical ◽  
Molecular Oxygen ◽  
Radical Reaction ◽  
Free Radical Reaction ◽  
Keto Ester

scholarly journals Free Radical Mediated Oxidative Degradation of Carotenes and Xanthophylls

Molecules ◽  
2020 ◽  
Vol 25 (5) ◽  
pp. 1038 ◽  
Author(s):  
Raphael C. Mordi ◽  
Olabisi T. Ademosun ◽  
Christiana O. Ajanaku ◽  
Ifedolapo O. Olanrewaju ◽  
John C. Walton
Keyword(s):  
Excited State ◽  
Free Radical ◽  
Vitamin A ◽  
Molecular Oxygen ◽  
Oxidative Degradation ◽  
Chain Structure ◽  
Ring Structure ◽  
Peroxyl Radicals ◽  
Chemical Structures ◽  
Excited State Quenching

This article reviews the excited-state quenching, pro-vitamin A activity and anticarcinogenicity of carotenes and xanthophylls in relation to their chemical structures. Excited-state quenching improved with the length of the conjugated chain structure. Pro-vitamin A activity was dependent on the presence of at least one beta-ionyl ring structure. The effectiveness of carotenoids as antioxidants depended on their ability to trap peroxyl radicals with production of resonance-stabilized carotenyl radicals. The products identified from oxidations of carotenes and xanthophylls with molecular oxygen and other oxidizing agents are presented. The free radical-mediated mechanisms that have been proposed to account for the different classes of products are reviewed.

Free-radical chain oxidation of rat red blood cells by molecular oxygen and its inhibition by α-tocopherol

1987 ◽  
Vol 258 (2) ◽  
pp. 373-380 ◽  
Author(s):  
Masayuki Miki ◽  
Hiroshi Tamai ◽  
Makoto Mino ◽  
Yorihiro Yamamoto ◽  
Etsuo Niki
Keyword(s):  
Free Radical ◽  
Red Blood Cells ◽  
Molecular Oxygen ◽  
Blood Cells ◽  
Radical Chain ◽  
Chain Oxidation ◽  
Radical Chain Oxidation

EPR of a free radical in fullerene, C60: effect of molecular oxygen

1992 ◽  
Vol 96 (17) ◽  
pp. 6855-6858 ◽  
Author(s):  
M. D. Pace ◽  
T. C. Christidis ◽  
J. J. Yin ◽  
J. Milliken
Keyword(s):  
Free Radical ◽  
Molecular Oxygen ◽  
Fullerene C60

scholarly journals Free radical chain oxidation and hemolysis of erythrocytes by molecular oxygen and their inhibition by vitamin E.

1986 ◽  
Vol 32 (5) ◽  
pp. 475-479 ◽  
Author(s):  
Yorihiro YAMAMOTO ◽  
Etsuo NIKI ◽  
Yoshio KAMIYA ◽  
Masayuki MIKI ◽  
Hiroshi TAMAI ◽  
...  
Keyword(s):  
Free Radical ◽  
Vitamin E ◽  
Molecular Oxygen ◽  
Radical Chain ◽  
Chain Oxidation ◽  
Radical Chain Oxidation

Molecular oxygen induced free radical oxythiocyanation of styrenes leading to α-oxothiocyanates

Tetrahedron ◽  
2015 ◽  
Vol 71 (23) ◽  
pp. 4031-4034 ◽  
Author(s):  
Kui Liu ◽  
Da-Peng Li ◽  
Shao-Fang Zhou ◽  
Xiang-Qiang Pan ◽  
Adedamola Shoberu ◽  
...  
Keyword(s):  
Free Radical ◽  
Molecular Oxygen

ChemInform Abstract: Molecular Oxygen Induced Free Radical Oxythiocyanation of Styrenes Leading to α-Oxothiocyanates.

ChemInform ◽  
2015 ◽  
Vol 46 (37) ◽  
pp. no-no
Author(s):  
Kui Liu ◽  
Da-Peng Li ◽  
Shao-Fang Zhou ◽  
Xiang-Qiang Pan ◽  
Adedamola Shoberu ◽  
...  
Keyword(s):  
Free Radical ◽  
Molecular Oxygen
Sign in / Sign up

Export Citation Format

Share Document