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Ph.D. Theses: Recent submissions

Now showing items 41-51 of 51

Conformational analysis of 2-substituted cyclohexanone ketal derivatives by molecular mechanics and nuclear magnetic resonance

Varnalı, Tereza. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1986., 1986.)

The present study is concerned with the application of the Molecular Mechanics Method to 2-substituted cyclohexanoneketals. The object is to find the conformational free energy difference between the equilibrating conformers ...
A computational approach the free radical polymerization of acrylates and methacrylates

Değirmenci, İsa. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2010., 2010.)

Free radical polymerization (FRP) is one of the most favorable chemical reactions employed in both industry- and laboratory-scale chemical productions, because it can convert a wide variety of vinyl monomers into high ...
Polymerization reactions of functionalized vegetable oils with petroleum-based macromonomers

Öztürk, Cem. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2010., 2010.)

The aim of this work is to synthesize new polymers from plant oils. Polymerization of plant oil triglycerides is possible by attaching a polymerizable group to the triglyceride. This strategy has been used by us and by ...
Axialy chiral n-(o-aryl)-2-thioxo-oxazolidine-4-one and rhodanine derivatives: enantiomeric separation and determination of racemization barriers

Yılmaz, Esra Müjde. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)

In this study, sterically hindered 5,5-dimethyl-3-(o-aryl)-2-thioxo-4-oxazolidinones, 5,5-dimethyl-3-(o-aryl)-2-thioxo-4-thiazolidinones and 3-(o-aryl)-2-thioxo-4- thiazolidinones(rhodanines) have been synthesized as ...
Modeling the selectivity in pericyclic reactions

Ölçüm, Nihan Çelebi. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)

Pericyclic reactions are very powerful and widely utilized transformations to obtain complex molecules. The selective versions have received remarkable interest and have found extensive use in synthetic organic chemistry ...
A hybrid computational approach to the benzoin synthesis in different media

Topal, Kevser Göçmen. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)

Benzoin derivatives are widely used in organic chemistry, mainly as starting materials in drug synthesis and photoinitiators in polymer chemistry, due to their bifunctionality, the presence of the asymmetric center, and ...
Chemical characterization of lipid residues in neolithic and chalcolithic pottery from Anatolia

Bıyık, Ayla Türkekul. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)

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Elucidation of the deamidation mechanism of asparaginyl residues in peptides and proteins

Çatak, Şaron. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)

Demidation of proteins is a topic of wide interest that has been subject to experimental and theoretical studies. Deamidation is a nonenzymatic and spontaneous process that converta asparagine conformational changes in ...
Asymmetric syntheses, ring opening and stereoselective reactions, absolute conformation and activation barrier determinations on axially chiral oxazolidine derivatives

Ordu, Öznur Demir. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)

In this study, sterically hindered 5-methyl-3-(o-aryl)-2,4-oxazolidinediones, 5-methyl- 3-(o-iodophenyl)-2-thioxo-4-oxazolidinedione and 5,5-dimethyl-3-(o-aryl)-2,4- oxazolidinediones have been synthesized. Diastereomeric ...
Functionalization and polymerization of plant oil triglycerides

Çaylı, Gökhan. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)

In this study, new polymers and were synthesized from different plant oil triglycerides by using allylic groups of the triglycerides. Moreover, allylic positions and double bonds of soybean oil were used for preparation ...
An investigation of the carbon-carbon bond rupture in fluoroethanes by RRKM theory

Aviyente, Viktorya. (Thesis (Ph.D.)- Bogazici University. Institute for Graduate Studies in Social Sciences, 1983., 1983.)

In this dissertation, the thermal decompositions of ethane, 1,1,2,2-tetrafl uoroethane, pentafl uoroethane and hexafl uoroethane have been subjected to a theoretical treatment i n terms of the quantum statistical RRKM ...

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