scholarly journals Synthesis and evaluation of new heteroaryl nitrones with spin trap properties

RSC Advances ◽  
2020 ◽  
Vol 10 (66) ◽  
pp. 40127-40135
Author(s):  
G. Barriga-González ◽  
C. Aliaga ◽  
E. Chamorro ◽  
C. Olea-Azar ◽  
E. Norambuena ◽  
...  
Keyword(s):  
Free Radical ◽  
Spin Trap ◽  
Radical Traps

A new series of heteroaryl nitrones were synthesized and evaluated as free radical traps due to the results showed in our previous report.

Reactive Oxygen Involvement in Neurodegenerative Pathways: Causes, Consequences, and Potential Management with Nitrone-Based Free Radical Traps

2003 ◽  
pp. 265-282 ◽  
Author(s):  
Kenneth Hensley ◽  
Quentin N. Pye ◽  
Tahereh Tabatabaie ◽  
Charles A. Stewart ◽  
Robert A. Floyd
Keyword(s):  
Free Radical ◽  
Reactive Oxygen ◽  
Radical Traps

Investigation of Radical and Polar Mechanisms in Vulcanization Reactions

1960 ◽  
Vol 33 (2) ◽  
pp. 342-356 ◽  
Author(s):  
J. Reid Shelton ◽  
E. T. McDonel
Keyword(s):  
Free Radical ◽  
Curing Temperature ◽  
Zinc Salt ◽  
Crosslinking Reaction ◽  
Zinc Salts ◽  
Single Complex ◽  
Radical Traps ◽  
Radical Character ◽  
Polar Mechanism ◽  
Curing Systems

Abstract The results obtained with free radical traps in a variety of curing systems for SBR rubber give evidence for both polar and free radical mechanisms. There is apparently no one mechanism even for sulfur vulcanization and the relative free radical or polar character of the crosslinking reaction varies over a broad range including situations in which both types occur in the same formulation. This may be due to competing reactions which function independently, or it may be the result of a combination of polar and free radical reactions in a single complex mechanism. For example, certain accelerators may initiate the reaction by dissociation to free radicals which attack the S8 molecule and form polysulfides which then decompose by a polar mechanism to initiate the propagation stage of the reaction. Based on the information obtained in this study and other supporting evidences, it is possible to group the familiar curing systems according to the apparent polar or free radical character of the reaction as observed in SBR. It is interesting to note that the accelerated sulfur curing systems which most closely approximate a polar mechanism either involve an amine (DPG) or a compound which is either present as a zinc salt (dithiocarbamate) or can easily form zinc salts at the curing temperature (thiuram disulfide and mercaptobenzothiazole systems). All curing systems studied which include free sulfur appear to involve a polar mechanism.

The thermal decomposition of RDX at temperatures below the melting point. III. Towards the elucidation of the mechanism

1971 ◽  
Vol 24 (5) ◽  
pp. 945 ◽  
Author(s):  
JJ Batten
Keyword(s):  
Thermal Decomposition ◽  
Free Radical ◽  
Melting Point ◽  
Nitrogen Dioxide ◽  
The Other ◽  
Decomposition Products ◽  
Radical Traps

The rate of thermal decomposition of RDX has been investigated in the presence of its decomposition products and free radical traps. From the measurements, it is concluded that formaldehyde and nitrogen dioxide, presumably ?encaged? in the sample, catalyse the decomposition of RDX positively and negatively respectively. The non-volatile residue also acts as a positive catalyst. The other products have little or no effect on the rate, and the free radical traps did not reduce the rate.

scholarly journals Role of Lipid-Derived Free Radical in Bleomycin-Induced Lung Injury in Mice: Availability for ESR Spin Trap Method with Organic Phase Extraction

2008 ◽  
Vol 31 (10) ◽  
pp. 1855-1859 ◽  
Author(s):  
Keizo Sato ◽  
Yasumasa Tashiro ◽  
Satsuki Chibana ◽  
Akihisa Yamashita ◽  
Tomohiro Karakawa ◽  
...  
Keyword(s):  
Free Radical ◽  
Lung Injury ◽  
Organic Phase ◽  
Spin Trap ◽  
Phase Extraction

The mode of cell death in H-358 lung cancer cells cultured with inhibitors of 5-lipoxygenase or the free radical spin trap, NTBN

2001 ◽  
Vol 166 (2) ◽  
pp. 223-231 ◽  
Author(s):  
D Ou ◽  
P Bonomi ◽  
W Jao ◽  
S Jadko ◽  
J.E Harris ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Cell Death ◽  
Free Radical ◽  
Cancer Cells ◽  
Spin Trap ◽  
Lung Cancer Cells ◽  
Cells Cultured
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