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Studies on oxidative dissimilation in Acetobacter suboxydan

Creator:: Hauge, Jens Gabriel
Resource Type:: Dissertation
Full Text:: TABLE OF CONTßÌ4T3 Jubject Page Introduction. . . . . . . . . . . . . . . . . . . . i tatorials

Part I: Synthetic Studies toward C10-functionalized Lycopodium Alkaloids. Part II: Exploration of the Pummerer Cyclization and Its Application to the Total Syntheses of the Abietane Diterpenoids

Creator:: Li, Xin
Abstract:: This dissertation is separated into two parts according to the two major distinct research projects. In Part I, the full account of synthetic studies toward C10-functionalized lycopodium alkaloids is described. In Part II, the detailed discussion on the exploration of the Pummerer cyclization methodology and its application to the total...
Resource Type:: Dissertation
Full Text:: on January 28 2019. Title: Part I: Synthetic Studies toward C10-functionalized Lycopodium

A study of the permanganate oxidation of 4-methylpyrimidine to pyrimidine-4-carboxylic acid

Creator:: Ni, Rain Wo
Abstract:: The yields from the oxidation of 4-methylpyrimidine with potassium permanganate were found to increase from 25 to 92 percent by the addition of small amount of potassium hydroxide to the reaction mixture. Pyrimidine-4-carboxylic acid decarboxylates in hot aqueous solution to yield pyrimidine and carbon dioxide. The rate is that decarboxylation...
Resource Type:: Masters Thesis
Full Text:: permanganate oxidation as reported by Gabriel, Several derivatives of pyrimidine-4-carboxylic acid were

A study of the limitations of ultraviolet spectral data for the determination of dissociation constants of organic nitrogeneous bases

Creator:: Vachananda, Sookapracha
Abstract:: Ultraviolet spectroscopic methods for the determination of dissociation constants can only be applied to those compounds having protonatable sites conjugated with or inherent in a chromophoric group of the compound. The determination of the dissociation constants of organic nitrogeneous bases by ultraviolet spectroscopic methods was found to be only reliable...
Resource Type:: Dissertation
Full Text:: heterocycle. With such compounds both methods, (I) those based on taking the extinction coefficient

The synthesis and cyclization of 2,4-diaminobutyric acid

Creator:: Li, Chun-wing
Abstract:: The objectives of this study were to isolate 2, 4-diaminobutyric acid and to attempt cyclizing the acid and its disulfonamide derivative. The original synthetic method by Adamson was followed but a modified isolation procedure for the acid was employed. Following the synthesis, the acidic solution was passed through Dowex-3 ion-exchange...
Resource Type:: Masters Thesis
Full Text:: anhydride was employed, I-acety1-3-acetamido- 2-pyrrolidone was obtained in very low yield. The

Stereospecific Synthesis of Stereotriad Motifs and Alkenes Using Enantioenriched sp³-Hybridized Carbenoids

Creator:: Xun, Sun
Abstract:: Enantioenriched sp³-hybridized carbenoid reagents CR1R2MX (X = nucleofuge, M = electrofuge) of different types were investigated for the synthesis of polysubstituted alkyl chains by iterative stereospecific reagent-controlled homologation (StReCH) and for the stereospecific connective synthesis of alkenes by eliminative cross-coupling. In the first part, putative enantioenriched α-chloroalkyllithiums (CHRLiCl) were employed...
Resource Type:: Dissertation
Full Text:: proceeds by a pair of fundamental steps both of which are inherently stereospecific: (i) electrophilic

Stereoselective synthesis & application of enantioenriched main group α-haloalkyl organometal reagents

Creator:: Emerson, Christopher R.
Abstract:: Sulfoxide-ligand exchange (SLE) and asymmetric halogen-metal exchange (AHME) processes were separately examined for the enantioselective synthesis of functionalized alpha-haloalkylmetal (carbenoid) reagents. Carbenoids derived from SLE were used to effect stereospecific reagent-controlled homologation (StReCH) of boronic esters and those generated via AHME were engaged in Darzens-type chemistry with aldehydes. Abstract for...
Resource Type:: Dissertation
Full Text:: of: acid chloride formation [(COCl)2 and cat. DMF)], aminolysis (with R2NH, R = Me, Et, i-Pr; 65

Removal of Radioactive Strontium, Iodine, and Uranium from Contaminated Groundwater : Sorption Processes and Properties

Creator:: Leonard, Mary E.
Abstract:: Iodine-129 is a key risk driver at sites where nuclear materials have been fabricated or processed, and it is a predominant isotope of concern in long-term waste storage strategies. I-129 exists primarily as iodate in the subsurface at the Hanford Site in south-central Washington State. Between 15 and 40% of...
Resource Type:: Dissertation
Full Text:: strategies. I-129 exists primarily as iodate in the subsurface at the Hanford Site in south-central

Total synthesis of indole alkaloids: pt. 1. Asymmetric synthesis of (-)-ibogamine. pt. 2. An approach toward the synthesis of koumine

Creator:: Choi, Younggi
Abstract:: PART I. The preparation of (-)-ibogamine (1) in fourteen steps from benzoquinone and in 10% overall yield is a powerful illustration of the value of the asymmetric Diels-Alder reaction as a starting point in a multistep synthesis. All four cycloadducts, 70, 77, 84 and 96, obtained with the (S)-BINOL-TiCl₂ complex...
Resource Type:: Dissertation
Full Text:: INDOLE ALKALOIDS: PART I. ASYMMETRIC SYNTHESIS OF (-)-IBOGAMINE. PART II. AN APPROACH TOWARD THE

Computational Investigation and Prediction of Mechanisms and Stereocontrol in Complex Organic Reactions

Creator:: Pattawong, Ommidala
Abstract:: Complex organic transformations, such as the addition of pyrrole to ketene using planar chiral organocatalyst (*PPY), the four-component anhydride- Manniach reactions, and the site-selective desymmetrization of meso-1,2-diol, are remarkable synthetic reactions that provide high yield and high selectivity. However, the exact mechanism and origins of stereocontrol for theses synthetic organic...
Resource Type:: Dissertation
Full Text:: and the i-Pr of the catalyst. The syn-bound pathway is when a substrate alcohol bounds syn to i-Pr of

ScholarsArchive@OSU

Studies on oxidative dissimilation in Acetobacter suboxydan

Part I: Synthetic Studies toward C10-functionalized Lycopodium Alkaloids. Part II: Exploration of the Pummerer Cyclization and Its Application to the Total Syntheses of the Abietane Diterpenoids

A study of the permanganate oxidation of 4-methylpyrimidine to pyrimidine-4-carboxylic acid

A study of the limitations of ultraviolet spectral data for the determination of dissociation constants of organic nitrogeneous bases

The synthesis and cyclization of 2,4-diaminobutyric acid

Stereospecific Synthesis of Stereotriad Motifs and Alkenes Using Enantioenriched sp³-Hybridized Carbenoids

Stereoselective synthesis & application of enantioenriched main group α-haloalkyl organometal reagents

Removal of Radioactive Strontium, Iodine, and Uranium from Contaminated Groundwater : Sorption Processes and Properties

Total synthesis of indole alkaloids: pt. 1. Asymmetric synthesis of (-)-ibogamine. pt. 2. An approach toward the synthesis of koumine

Computational Investigation and Prediction of Mechanisms and Stereocontrol in Complex Organic Reactions

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