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 15 of 15 for “"unsaturated compounds"”.
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ACTIVATION OF AMMONIA, SECONDARY, AND TERTIARY AMINES BY GROUP IIA AND FIRST ROW MIDDLE AND LATE TRANSITION METAL ATOMS AND CLUSTERS
… of the cocondensates yields saturated and unsaturated hydrocarbons, and in some cases, hydrogen is formed. The reaction of certain cocondensates with unsaturated compounds yields hydrogenated products.
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The development and applications of unsymmetrical diboron compounds
Organoboron compounds have shown a wide variety of applications in both organic synthesis and the pharmaceutical field in the past decades. Transition metal-catalyzed boration of unsaturated compounds has been studied extensively as an efficient method to install C-B bonds. Most of the previous …
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Spectroscopic and synthetic studies of lichen metabolites
… acid. The reactions of mercuric acetate with unsaturated compounds are reviewed and anomalous products of Jones reagent oxidation investigated.
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A preliminary study of the characteristic physical properties of chlorinated asphalt
<p>The introduction of chlorine into hydrocarbon compounds produces a product with properties markedly different from those of the original hydrocarbon. Methane, a gas at ordinary conditions, becomes methyl chloride, still a gas but having a higher condensation point than methane, upon the …
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New Methods for the α-Functionalization of Thioesters and Activated Hydrazones and an Application Toward the Total Synthesis of Apratoxin D
… straightforward access to β'-hydroxy-α,β-unsaturated carbonyl compounds from aldehydes and α,β-unsaturated carbonyls. However, despite the importance of the Baylis-Hillman reaction, it is slow, reaction yields are quite low, and the process is not general, as it rarely works for …
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Liberation of low-coordinate phosphorus species from anthracene-based molecular precursors
The study of heavier p-block analogs to unsaturated organic small molecules is of fundamental importance, allowing insight into the differing bonding and reactivity patterns that control their synthetic utility. A major complication in this pursuit is the instability of these unsaturated compounds …
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A Comparison of Reactivities and Properties of 3,3-Dimethylacrylic Acid, Isovaleric Acid and Their Derivatives
… The electronic and resonance properties of these compounds were investigated by analyzing their carbon-13 chemical shifts and carbonyl infrared absorption frequencies. The carbonyl infrared absorption frequencies for saturated and unsaturated esters and amides were correlated with the …
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Development of Transition Metal-Catalyzed Borylation Protocols using Symmetrical and Unsymmetrical Diboron Reagents
The versatility of organoboron compounds has been demonstrated by their use as synthetic intermediates and more recently in therapeutic applications since the FDA approval of Velcade©. As a result, transition metal-catalyzed protocols to incorporate boron reagents into unsaturated compounds have …
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Reactivity of a Low Valent Gallium Compound
… The reactivity of NacNacGa towards various unsaturated compounds is studied. In particular, reaction between NacNacGa and phenyl isothiocyanate resulted in the oxidative addition of the C=S bond under ambient conditions, leading to the isolation cyclization product NacNacGa(κ2-S2CNPh) and …
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Artificial and mammalian olfaction and low-coordinate metalloporphyrin complexes
… explore the reactivities of these coordinatively-unsaturated compounds.
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Copper(I) Hydride-Catalyzed Transformations of π-Electrophiles
… method for accessing synthetically relevant β, γ-unsaturated acceptors (Chapter 4). — PART I Chapter 2: Regio- and Enantioselective CuH-Catalyzed Allylation of Ketones Using Terminal Allenes An efficient method for the copper-catalyzed allylation of ketones is described using widely available …
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Import and decomposition of dissolved organic carbon in pre-dams of drinking water reservoirs
… mass spectrometry revealed that oxidized, unsaturated compounds were more strongly decomposed under priming (i.e. in phytoplankton presence). Given the observed increase in DOC concentrations during the experiments, it can be concluded that aquatic priming is not easily detectable via net …
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Immunological and biosynthetic studies of the human pyruvate dehydrogenase complex
… of saturated fatty acids (C2-C14) and related compounds. These included a branched-chain fatty acid (C8), valproic acid, a common anti-epileptic drug causing steatosis and an unsaturated aliphatic compound, trans-2-nonenoic acid, closely related in structure to a major lipid peroxidation …
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Complejos metal-carbeno de Fischer nitrogenados: Mecanismos fotoquímicos y propiedades fotofísicas
Esta memoria se centra en el comportamiento de complejos iminocarbeno de Fischer frente a la luz. Se plantearon como objetivos los estudios de: la estereoselectividad en reacciones con alquenos para formar 1-pirrolinas, la influencia de los sustituyentes en la fotorreactividad y las propiedades …