Index Catalog // ScholarsArchive@OSU

The free radical scavenging system in overcoming phytotoxicity and breaking dormancy

Creator:: Zhen, Liping
Abstract:: Hydrogen cyanamide (CY) induced earlier budbreak, more uniform and a higher percentage of budbreak in resting poplar (Populus alba x P. gradidentata, NC 5339) plants. However, it was phytotoxic to poplar when applied at 0.5 M or higher concentrations. Percent budbreak increased and percent dieback decreased when poplar plants were...
Resource Type:: Dissertation
Full Text:: Doctor of Philosophy in Horticulture presented on December 9, 1993 Title: The Free Radical

Age-related alterations in transcriptional regulation of hepatic glutathione synthesis : remediation by R-alpha-lipoic acid

Creator:: Shenvi, Swapna V.
Abstract:: Glutathione (GSH) is the predominant low molecular weight thiol antioxidant in liver tissue. GSH plays an important role in maintaining the intracellular thiol redox ratio as well as detoxification of electrophiles and xenobiotics. Aging leads to a significant decline (35%; P ≤ 0.05) in hepatocellular GSH levels. Using young (2-4...
Resource Type:: Dissertation
Full Text:: 2 1.1 Background and significance The ‘free radical theory’ of aging Aging is a multi

Free radical hydrogen abstraction from benzocycloalkenes

Creator:: Wong, Rosy Wan-han
Abstract:: The relative rates of hydrogen abstraction from o-xylene, o-diethylbenzene and a series of four benzocycloalkenes by trichloromethyl radical were determined at 70°. The strain energies of the hydrocarbons and the corresponding radicals were calculated. A good correlation between the log of the relative rates and the calculated changes in strain...
Resource Type:: Masters Thesis
Full Text:: CHEMISTRY presented on /3 1156074eA) (Major) (Date) Title: FREE RADICAL HYDROGEN ABSTRACTION FROM

Addition of substituted phenylthiyl radicals to substituted α-methylstyrenes

Creator:: Geers, Brian Nicholas
Resource Type:: Masters Thesis
Full Text:: . Kellog, "Methods in Free Radical Chemistry, " 2, E. S. Huser, Ed., Marcell Dekker, New York, N. Y., (1969

Steric effects in free-radical hydrogen atom abstraction reactions

Creator:: Totherow, William D.
Abstract:: A study of the relative rates of benzylic hydrogen abstractions from a series of meta and para substituted neopentylbenzenes by the bromine radical and trichloromethyl radical at 70°C has been carried out. Application of the Hammett equation yields p values of -0.75 for the bromine atom and -0.94 for the...
Resource Type:: Masters Thesis
Full Text:: : STERIC EFFECTS IN FREE-RADICAL HYDROGEN ATOM ABSTRACTION REACTIONS Abstract approved: Redacted for

Hydrogen abstractions from arylmethanes

Creator:: Unruh, Jerry Dean
Abstract:: The relative rates of hydrogen abstraction from a series of 13 arylmethanes by the trichloromethyl radical were determined at 70°. The attacking radical was generated from bromotrichloromethane us ing benzoyl peroxide as the initiator. The solvent was benzenebromotrichloromethane. An excellent correlation, with a coefficient of 0.977, was obtained when the...
Resource Type:: Dissertation
Full Text:: goal in the development of free radical chemistry. As a result, a large number of free radical

Free-radical hydrogen abstraction from polycyclic aliphatic hydrocarbons

Creator:: Koch, Victor Raymond
Abstract:: Six polycyclic aliphatic hydrocarbons were reacted with the trichloromethyl radical photolytically generated from bromotrichloromethane at 40°. Relative rates of reaction were correlated with a computer analysis of the change in strain energy in going from the ground state to the intermediate. A good correlation between the log of the relative...
Resource Type:: Masters Thesis
Full Text:: of student) (Degree) in CHEMISTRY presented on /1"// (Major) (Date) Title: FREE-RADICAL HYDROGEN

Part I. The identity of the chain propagating radical(s) in photoinitiated benzylic bromination by bromotrichloromethane ; Part II. Chlorine atom abstraction from α- and β-chloroepoxides by the triphenyltin radical

Creator:: Krosley, Kevin W.
Resource Type:: Dissertation
Full Text:: formed hexaphenylethane. Gomberg, who asked that the field of free-radical chemistry be left to his

Investigations into the mechanism of the photodechlorination of pentachlorobenzene

Creator:: Schmidt, Robert Dean
Abstract:: Several experiments were undertaken to investigate the mechanism of photodechlorination of pentachlorobenzene. The thermal methoxydechlorination reaction of pentachlorobenzene was studied. In DMSO at 50 °C sodium methoxide reacts smoothly with pentachlorobenzene to give three tetrachloroanisole isomers. A second-order kinetic plot for this reaction is linear to high precision, indicating that...
Resource Type:: Masters Thesis
Full Text:: triethylamine, the intermediate tetrachlorophenyl radical exists as an unencumbered free radical rather than in

The chemistry of selected carbene and radical ion intermediates

Creator:: Pugh, James K.
Resource Type:: Dissertation
Full Text:: radical. An important aspect of free radical chemistry investigated in this thesis is the hydrogen

ScholarsArchive@OSU

The free radical scavenging system in overcoming phytotoxicity and breaking dormancy

Age-related alterations in transcriptional regulation of hepatic glutathione synthesis : remediation by R-alpha-lipoic acid

Free radical hydrogen abstraction from benzocycloalkenes

Addition of substituted phenylthiyl radicals to substituted α-methylstyrenes

Steric effects in free-radical hydrogen atom abstraction reactions

Hydrogen abstractions from arylmethanes

Free-radical hydrogen abstraction from polycyclic aliphatic hydrocarbons

Part I. The identity of the chain propagating radical(s) in photoinitiated benzylic bromination by bromotrichloromethane ; Part II. Chlorine atom abstraction from α- and β-chloroepoxides by the triphenyltin radical

Investigations into the mechanism of the photodechlorination of pentachlorobenzene

The chemistry of selected carbene and radical ion intermediates

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