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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 38138 for “"C++"”.
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Palladium-catalyzed C-C, C-N and C-O bond formation
New methods for Pd-catalyzed cross-coupling reactions of aryl halides or arenesulfonates are described. Key to the success of these transformations is the proper choice of ligand and reaction conditions. Palladium catalysts supported by bulky, monodentate phosphine ligands with a biaryl backbone or …
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Transition metal-facilitated C-C and C-F bond forming
Chapter 1. Copper-Catalyzed Asymmetric Addition of Olefin-Derived Nucleophiles to Ketones A copper (I) catalyzed coupling olefins and ketones has been developed for the diastereo- and enantioselective generation of homopropargyl alcohols bearing vicinal stereocenters. This method allows for the …
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Quinone-Catalyzed Amine α-C–H and α-C–C Functionalization
Amines are extremely useful compounds with diverse applications in multiple 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 …
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C/EBPalpha downregualtes c-jun expression
The transcription factor C/EBPa is crucial for the differentiation of granulocytes. Conditional expression of C/EBPa triggers neutrophilic differentiation and C/EBPa can block TPA induced monocytic differentiation of bipotential myeloid cells. In C/EBPa knockout mice, no mature granulocytes are …
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Metallierung, oxidative C-C-Kupplung und C-N-Aktivierung mit Zinkorganyl-Verbindungen
Ein Ziel dieser Arbeit war es, die Zugänglichkeit von geminalen Bis(alkylzink)imiden zu untersuchen. Verbindungen des Typs (RZn)2NR´ wurden bereits in der Literatur[33][34] als Polymerisationskatalysator erwähnt, jedoch nicht strukturell erfasst. In Kapitel 2.1 ist die Zinkierung primärer Amine mit …
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Photochemical Methods for the Construction of C-C and C-X Bonds
This thesis encompasses photochemical methods for the construction of C-C and C-X bonds. Following an introduction on the challenges with photochemistry, early work in photoredox catalysis and the application of continuous processing for photochemical reactions are three research chapters. Chapter …
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Late transition metal catalyzed C-N and C-C bond forming reactions
New methods for the palladium-catalyzed amination of aryl halides are described. Key to these is the development of new catalysts and reaction conditions for these transformations. Initially, P(o-tol)3 ligated palladium catalysts were investigated but gave way to systems that used chelating …
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Development of transition metal-catalyzed C-S and C-C cross-coupling reactions
The transition-metal-catalyzed carbon-carbon and carbon-heteroatom bond forming reactions are important and fundamental transformations in synthetic organic chemistry. These reactions have been widely used for a variety of cross-coupling reactions of aryl halides in the processes of C?C, C?N and …
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Development of Improved Methodologies Toward the Formation of C-C and C-N Bonds
<p>Organometallic chemistry provides valuable tools for the formation of carbon-carbon and carbon-heteroatom bonds that would otherwise require multiple steps and resources to achieve through conventional methods. Studies toward the regioselective and stereoselective formation these types of bonds …
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Metallodendrimers as catalysts for C-C coupling reactions
In this work, we describe the synthesis of ferrocenylimine and G1 dendrimeric N,N′ ligands, and their palladium(II) complexes. The ligands L1 – L4 were synthesized following Schiff base condensation reactions. The ferrocenylimine ligands L1 and L2 were prepared from ferrocenecarboxaldehyde and …
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Comparative Study of C, Java, C# and Jython
Comparing programming languages is a common topic among programmers and software developers. With the recent changes in programming standards and continual upgrades in hardware design, many new programming languages are being developed, while existing ones are currently going through several …
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Renaissance humanism in England, c.1490-c.1530
This dissertation explores humanism, the rediscovery of the culture of ancient Greece and Rome, in late fifteenth- and early sixteenth-century England. It does so with reference to texts, institutional settings, and networks both within and beyond England, and examines the activities of several …
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Introspective C++
Introspection has become a significant language feature to enable new component technologies. It enables such capabilities as runtime component discovery, new levels of component flexibility and change tolerance, dynamic reconfiguration and system self healing. Three levels of introspection are …
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