Index Catalog // ScholarsArchive@OSU

Analysis of the mechanism of sulfoxide-lithium exchange and the reactive intermediate in stereospecific reagent-controlled homologation (StReCH)

Creator:: Hoyt, Amanda
Abstract:: The stereospecific reagent-controlled homologation (StReCH) of boronic esters with enantioenriched carbenoid species generated in situ by the addition of organolithium initiators to stereodefined α-chloroalkyl aryl sulfoxides was previously reported. The reaction of an organolithium with an α-chloroalkyl aryl sulfoxide ostensibly generates an α-chloroalkyllithium via sulfoxide-lithium exchange; however, the true nature...
Resource Type:: Masters Thesis
Full Text:: ) AN ABSTRACT OF THE THESIS OF Amanda Hoyt for the degree of Master of Science in Chemistry

Determination of Reaction Product Cross Sections in the ¹³⁶Xe + ²⁰⁸Pb Multi-nucleon Transfer Reaction at E[subscript cm] = 450 MeV

Creator:: Barrett, J. Spencer
Abstract:: The yields of 235 projectile-like and target-like fragments from the interaction of ¹³⁶Xe with a thick target of ²⁰⁸Pb at a center-of-mass energy, E[subscript cm], of 450 MeV were measured using γ-γ-γ coincidence data from Gammasphere and off-line γ-ray spectroscopy. The results give an expansive picture of the production cross...
Resource Type:: Dissertation
Full Text:: Determination of Reaction Product Cross Sections in the 136Xe

Intensity oscillations in the carbon 1s ionization cross sections of 2-butyne

Creator:: Carroll, Thomas X., Zahl, Maria G., Børve, Knut J., Sæthre, Leif J., Decleva, Piero, Ponzi, Aurora, Kas, Joshua J., Vila, Fernando D., Rehr, John J., and Thomas, T. Darrah
Abstract:: Carbon 1s photoelectron spectra for 2-butyne (CH3C CCH3) measured in the photon energy range from threshold to 150 eV above threshold show oscillations in the intensity ratio C2,3/C1,4. Similar oscillations have been seen in chloroethanes, where the effect has been attributed to EXAFS-type scattering from the substituent chlorine atoms. In...
Resource Type:: Article
Full Text:: oscillations in the carbon 1s ionization cross sections of 2-butyne Thomas X. Carroll,1 Maria G. Zahl,2 Knut J

Stereocontrolled Synthesis of Allenes by Eliminative Cross-Coupling of Carbenoids

Creator:: Cao, Yang
Abstract:: The bimolecular reaction of two carbenoid species resulting in the formation of a carbon-carbon double bond (pi-system), referred to herein as carbenoid eliminative cross-coupling (CEXC), involves a series of three fundamental steps: (i) ate-complex formation (transmetalation), (ii) 1,2-metalate rearrangement, and (iii) beta-elimination. All three steps are stereospecific and so the...
Resource Type:: Dissertation
Full Text:: on September 8, 2022. Title: Stereocontrolled Synthesis of Allenes by Eliminative Cross-Coupling

Survival Mediated Capture and Fusion Cross Sections for Heavy Element Synthesis

Creator:: Yao, Liangyu
Abstract:: The synthesis of superheavy element evaporation residues is described by the product of the capture cross section, fusion probability, and survival probability. Capture cross sections are moderately well known. The fusion probability is the least known with many uncertainties. The formalism for the survival probability is known, but the parameters...
Resource Type:: Dissertation
Full Text:: capture is the capture cross section at center-of-mass energy Ec.m and spin J. PCN is the fusion

The synthesis and electrocyclization of some linear and cross-conjugated hexatrienes

Creator:: Hilton, Charles Bruce
Abstract:: As part of the continuing investigation of the thermal cis- 1, 3, 5-hexatriene to 1,3-cyclohexadiene rearrangement, four new trienes and a cross-conjugated pentaene have been prepared and their thermal reactions studied. A new route to the synthesis of highly substituted trienes has been developed. The synthesis of three of these...
Resource Type:: Dissertation
Full Text:: cross-conjugated hexatrienes AN ABSTRACT OF THE THESIS OF Charles Bruce Hilton for the degree of

Isomeric cross-section ratios of Cd¹¹⁵ and Cs¹³⁴ for charged particle induced fission

Creator:: Shum, Yin-sang
Resource Type:: Masters Thesis
Full Text:: : ISOMERIC CROSS-SECTION RATIOS OF Cd115 AND Cs 134 FOR CHARGED PARTICLE INDUCED. FISSION Abstract approved

Development of Carbenoid Eliminative Cross-coupling for the Stereocontrolled Synthesis of Trisubstituted Alkenyl Moieties Within Styrenes and 1,3-Dienes

Creator:: Tanpure, Subhash D.
Abstract:: Traditional approaches for the direct preparation of alkenes are unable to fully control either the stereochemical configuration of the carbon-carbon double bond or else the regiochemistry of the substituents surrounding it. The recently introduced concept of carbenoid eliminative cross-coupling (CEXC) offers a remedy to these deficiencies by providing for a...
Resource Type:: Dissertation
Full Text:: . Title: Development of Carbenoid Eliminative Cross-coupling for the Stereocontrolled Synthesis of

Development of Methods for Stereoselective Carbon-Carbon Bond Formation

Creator:: Wu, Zhenhua
Abstract:: Three distinct methods to achieve the stereoselective synthesis of carbon-carbon bonds were investigated, encompassing: (i) the formation of axially chiral biaryl molecules by enantioselective Suzuki cross-coupling, (ii) the synthesis of α-phenylalkylboronic esters by enantioselective chain extension, and (iii) the stereospecific synthesis of alkenes by eliminative cross-coupling of enantioenriched sp³-hybridized carbenoids....
Resource Type:: Dissertation
Full Text:: molecules by enantioselective Suzuki cross-coupling, (ii) the synthesis of - phenylalkylboronic esters by

Coherent anti-Stokes Raman spectroscopy of gases

Creator:: Guthals, Dennis Marc
Abstract:: The development and applications of a 0.2 cm⁻¹ resolution Nd-YAG laser powered coherent anti-Stokes Raman spectroscopy, CARS, spectrometer for gas phase studies is chronicled in this thesis. Applications including CARS lineshape analysis, resonant CARS, and CARS of transient species and excited state molecules is reported. The intensity of the signal...
Resource Type:: Dissertation
Full Text:: : Redacted for Privacy 0 Professor J. W. Nibler The development and applications of a 0.2 cm 1 resolu- tion

ScholarsArchive@OSU

Analysis of the mechanism of sulfoxide-lithium exchange and the reactive intermediate in stereospecific reagent-controlled homologation (StReCH)

Determination of Reaction Product Cross Sections in the ¹³⁶Xe + ²⁰⁸Pb Multi-nucleon Transfer Reaction at E[subscript cm] = 450 MeV

Intensity oscillations in the carbon 1s ionization cross sections of 2-butyne

Stereocontrolled Synthesis of Allenes by Eliminative Cross-Coupling of Carbenoids

Survival Mediated Capture and Fusion Cross Sections for Heavy Element Synthesis

The synthesis and electrocyclization of some linear and cross-conjugated hexatrienes

Isomeric cross-section ratios of Cd¹¹⁵ and Cs¹³⁴ for charged particle induced fission

Development of Carbenoid Eliminative Cross-coupling for the Stereocontrolled Synthesis of Trisubstituted Alkenyl Moieties Within Styrenes and 1,3-Dienes

Development of Methods for Stereoselective Carbon-Carbon Bond Formation

Coherent anti-Stokes Raman spectroscopy of gases

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