Free-Radical Chain Reactions Involving Hydrogen and Bromine Atom Transfer Induced by TiO2-Mediated Photocatalysis

Langmuir ◽  
1999 ◽  
Vol 15 (4) ◽  
pp. 1141-1146 ◽  
Author(s):  
Shlomo Gershuni ◽  
Norbert Itzhak ◽  
Joseph Rabani
Keyword(s):  
Free Radical ◽  
Bromine Atom ◽  
Atom Transfer ◽  
Radical Chain ◽  
Chain Reactions

Free radical chain reactions of chlorine with cyclobutane in the solid state: Evidence for radical migration via H atom transfer

1988 ◽  
Vol 88 (4) ◽  
pp. 2847-2848 ◽  
Author(s):  
Arthur J. Sedlacek ◽  
Charles A. Wight
Keyword(s):  
Free Radical ◽  
Solid State ◽  
Atom Transfer ◽  
Radical Chain ◽  
Chain Reactions ◽  
Radical Migration

scholarly journals The detection and inhibition of free radical chain reactions

1942 ◽  
Vol 180 (982) ◽  
pp. 237-256 ◽  
Keyword(s):  
Nitric Oxide ◽  
Free Radical ◽  
Chemical Analysis ◽  
Diethyl Ether ◽  
Pressure Increase ◽  
Stationary States ◽  
Decomposition Rates ◽  
Radical Chain ◽  
Chain Reactions ◽  
Limiting Values

Part I. Comparison of nitric oxide and propylene as inhibitors The reduction by propylene of the rate of pressure increase in the decomposition of propaldehyde at 550° has been shown by chemical analysis to represent a true inhibition of the reaction, and not to be due n an important degree to an induced polymerization of the propylene. With propaldehyde and with diethyl ether the limiting values to which the decomposition rates are reduced by nitric oxide and by propylene respectively are the same, although much more propylene is required to produce a given degree of inhibition. From this it is concluded that the limiting rates are more probably those of independent non-chain processes, than those characteristic of stationary states where the inhibitor starts and stops chains with equal efficiency.

scholarly journals The hydrogen atom transfer reactivity of sulfinic acids

2018 ◽  
Vol 9 (36) ◽  
pp. 7218-7229 ◽  
Author(s):  
Markus Griesser ◽  
Jean-Philippe R. Chauvin ◽  
Derek A. Pratt
Keyword(s):  
Hydrogen Atom ◽  
Hydrogen Atom Transfer ◽  
Atom Transfer ◽  
Radical Chain ◽  
Chain Reactions ◽  
Sulfinic Acids

Sulfinic acids are characterized to be very good H-atom donors to each of alkyl and alkoxyl radicals. In order to participate in useful radical chain reactions, the sulfonyl radicals must undergo fast propagating reactions to avoid autoxidation, which is surprisingly rate-limited by the reaction of sulfonyl radicals with oxygen.

scholarly journals Evidence that Criegee intermediates drive autoxidation in unsaturated lipids

2020 ◽  
Vol 117 (9) ◽  
pp. 4486-4490 ◽  
Author(s):  
Meirong Zeng ◽  
Nadja Heine ◽  
Kevin R. Wilson
Keyword(s):  
Free Radical ◽  
Radical Chain ◽  
Chain Reactions ◽  
Unsaturated Lipids ◽  
Criegee Intermediates ◽  
Age Related ◽  
Lipid Autoxidation ◽  
Free Radical Chain Reaction ◽  
Cyclic Network ◽  
Radical Chain Reaction

Autoxidation is an autocatalytic free-radical chain reaction responsible for the oxidative destruction of organic molecules in biological cells, foods, plastics, petrochemicals, fuels, and the environment. In cellular membranes, lipid autoxidation (peroxidation) is linked with oxidative stress, age-related diseases, and cancers. The established mechanism of autoxidation proceeds via H-atom abstraction through a cyclic network of peroxy–hydroperoxide-mediated free-radical chain reactions. For a series of model unsaturated lipids, we present evidence for an autoxidation mechanism, initiated by hydroxyl radical (OH) addition to C=C bonds and propagated by chain reactions involving Criegee intermediates (CIs). This mechanism leads to unexpectedly rapid autoxidation even in the presence of water, implying that as reactive intermediates, CI could play a much more prominent role in chemistries beyond the atmosphere.

Free radical chain reactions involving alkyl- and alkenylmercurials

1989 ◽  
Vol 22 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Glen A. Russell
Keyword(s):  
Free Radical ◽  
Radical Chain ◽  
Chain Reactions

Combustion of Hydrocarbons - Free Radical Chain Reactions

1949 ◽  
Vol 41 (5) ◽  
pp. 893-897 ◽  
Author(s):  
P. L. Cramer ◽  
J. M. Campbell
Keyword(s):  
Free Radical ◽  
Radical Chain ◽  
Chain Reactions

Free radical chain reactions of 3-fluoro-3-iodo-β-lactams

1993 ◽  
Vol 34 (19) ◽  
pp. 3087-3090 ◽  
Author(s):  
Robert Kawecki ◽  
John T. Welch
Keyword(s):  
Free Radical ◽  
Radical Chain ◽  
Chain Reactions

Kinetics of Ionic and Free Radical Chain Reactions in Radiation Chemistry

1969 ◽  
Vol 6 (5) ◽  
pp. 466-473
Author(s):  
Donald H. Martin ◽  
Robert B. Taylor ◽  
Ffrancon Williams
Keyword(s):  
Free Radical ◽  
Radiation Chemistry ◽  
Radical Chain ◽  
Chain Reactions ◽  
Kinetics Of
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