Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 152 for “"synthetic methods"”.
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Synthetic methods for biologically relevant organofluorine compounds
"This thesis describes novel synthetic methodologies for the synthesis of biologically relevant organofluorine compounds"--Abstract, page iii.
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The development of new synthetic methods for chromone and ergochrome construction
… for the first time, and to this end novel synthetic methods for α,β-unsaturated ketones and oxygenated dienes were developed.<br/><br/>Two major routes are described: The first uses aliphatic starting materials and allows the construction of highly substituted chromones by an intramolecular …
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Bismuth-Ceramic Nanocomposites Through Ball Milling and Liquid Crystal Synthetic Methods
An additional synthetic method based on the infusion of ammonia gas to drive pH driven chemistries was also demonstrated for the synthesis of BiOCl and Bi nanoparticles.
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Glycoprotein mimetic materials - synthetic methods and study of viral inhibition properties
The human body houses some of the most unique materials on the planet and is a promising source of bioinspiration. The high molecular weight and glycosylation of mucin-type glycopeptides make them challenging to produce or even mimic. This material production challenge is one of the key limiting …
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Development of Novel Synthetic Methods for Size-Tunable Synthesis of Superparamagnetic Iron Oxide Nanoparticles
… with excellent size control. A number of methods for the synthesis of magnetic nanoparticles have been published, although the thermal decomposition of iron(III) precursors in organic solvents has been shown to yield high quality particles with low shape and size dispersity. Currents …
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Synthetic Methods for the Preparation of 1,3-S,O-Esters, α-Phosphonovinyl Triflates, and α-Alkynylphosphonates
<p>A broad and systematic study was conducted on synthetic methods to efficiently synthesize 1,3-<em>S</em>,<em>O</em>-esters, α-phosphonovinyl triflates, and α-alkynylphosphonates under mild reaction conditions. The master’s thesis is composed of two projects; the first project is titled …
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NOVEL SYNTHETIC METHODS AND APPLICATIONS OF POROUS MATERIALS: AEROGEL FOAMS, METALLIC AEROGELS, AMORPHOUS AND GRAPHITIC CARBON AEROGELS
<p>"We report novel methods for the synthesis of porous materials such as polymeric aerogel foams, pure metallic aerogels, amorphous and graphitic carbon aerogels, and their applications. I. Polyurethane based aerogel foams were synthesized with an aliphatic triisocyanate and ethylene glycol …
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DESIGN AND SYNTHESIS OF PURINE BASED NEUROPROTECTORS AND NOVEL SYNTHETIC METHODS FOR THE TRIFLUOROMETHYLATION OF ALDEHYDE HYDRAZONES
… compounds. Herein, we demonstrate two different synthetic routes for the C(sp<sup>2</sup>−H)-trifluoromethylation of the aldehyde hydrazones using the readily available and cost-effective Langlois reagent (sodium trifluoromethanesulfinate). This reaction scheme is broadly applicable to a series …
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Development of New Synthetic Methods for Transition Metal-Catalyzed Organic Reactions and Synthesis of Curcumin-Based Adducts
<p>Development of new synthetic methods for organic compounds is one of the most critical endeavors in modern chemistry. This pursuit not only broadens the scope of chemical synthesis but also provides valuable tools for various applications in pharmaceuticals, materials science, and so on.</p> …
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Synthetic and Post-Synthetic Methods towards Fine Tuning the Chemical and Physical Properties of Metal-Organic Frameworks
This thesis explores synthetic and post-synthetic strategies for tailoring the chemical and physical properties of metal-organic frameworks (MOFs), with a particular emphasis on modulating redox activity, framework composition, and ionic conductivity. The first part of the work focuses on …
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Part I: Design, synthesis, and studies of novel age-inhibitors and age-breakers; Part II: Novel synthetic methods for organofluorine compound
… compounds, and toward developing novel synthetic methods for organofluorine compounds, we have investigated synthetic strategies for <em>gem</em>-difluoro and trifluormethyl compounds. <em>gem</em>-Difluorination of 1,3-dithiolanes, obtained from the corresponding ketones, form …
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Synthetic methods and studies of some 10-Y-5 and 12-Y-6 hypervalent main group element species of group IIIB
N,N,N-tributylbutanaminium(OC-6-11$\sp\prime$)-bis (4-(1,1-dimethylethyl)-$\alpha,\alpha,\alpha\sp\prime\alpha\sp\prime$-tetrakis(trifluoromethyl)-2,6-pyridinedimethanolato(2-)N1,O$\alpha$,O$\alpha\sp\prime$) aluminum, a 12-Al-6 anionic species was synthesized and experimentally examined. Neutral …
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Investigation of synthetic methods for preparation of 2<sup>o</sup>-amino derivatives of 5-amino- 1, 10-phenanthroline: Applications to Cu<sup>+2</sup> based impedance sensors
… In research work, three different synthetic routes were investigated for preparation of secondary N-alkyl 5-aphen derivatives. KI- catalyzed mono alkylation of 5-aphen with alkyl halides gave significantly better results than Pd/C catalyzed mono N-alkylation with aldehydes and …
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Accessing Challenging Fluorinated Motifs Using Photoredox Catalysis And Enabling Technologies
… has spurred interest in the development of synthetic methods that allow the efficient incorporation of such fluorinated groups into complex molecules. Two fluorinated functional groups are of particular interest because of their properties as bioisoteres: the α–trifluoromethylalkene and the …
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The attempted synthesis of precursors of tetraaryldiazoethanes
… involves the investigation of possible useful synthetic methods leading to tetraaryldiazoethanes of the type PhPh<sup>I</sup>Ph<sup>II</sup>CC(N<sub>2</sub>)PH<sup>III</sup> or their precursors. The synthesis of these compounds is of importance since the carbenoid and carbonium ion …
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Epidithiodioxopiperazines: synthetic studies of (+)-chetomin and (-)-sporidesmin A
… products (+)-chetomin and (-)-sporidesmin A. Synthetic methods have been developed to efficiently construct the dioxopiperazine core of both molecules. Additionally, a simple epidithiodioxopiperazine has been synthesized to demonstrate a general method for the addition of a sulfur bridge to a …
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Quinone-Catalyzed Amine α-C–H and α-C–C Functionalization
… disciplines. For this reason, a myriad of synthetic methods has been developed for the preparation of amine compounds. Despite this, the majority of well-established methodology for amine synthesis relies on the introduction of amino groups. Emerging amine α-functionalization methodology …
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