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Dissertations / Theses on the topic 'H‐insertion reaction'

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Published: 4 June 2025

Last updated: 1 August 2025

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1

Burtoloso, Antonio Carlos Bender. "3-azetidinonas e 3-azetidinois : preparação e aplicações na sintese de azetidinas substituidas." [s.n.], 2006. http://repositorio.unicamp.br/jspui/handle/REPOSIP/249762.

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Orientador: Carlos Roque Duarte Correia<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Quimica<br>Made available in DSpace on 2018-08-05T22:30:16Z (GMT). No. of bitstreams: 1 Burtoloso_AntonioCarlosBender_D.pdf: 10110814 bytes, checksum: 1e36973f12232933308e658cdad952fe (MD5) Previous issue date: 2006<br>Doutorado<br>Quimica Organica<br>Doutor em Ciências

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2

Kawamura, Meire Yasuko. "Emprego de diazocetonas α,β-insaturadas com geometria Z na direta construção de esqueletos indolizidínicos e piperidínicos funcionalizados." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/75/75133/tde-26082016-104019/.

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Pumiliotoxinas e seus congêneres são compostos isolados da pele de algumas espécies de sapos das famílias Dendrobatidae, Mantellidae, Bufonidae, e Myobatrachidae, apresentando interessantes propriedades farmacológicas. As pumiliotoxinas, embora tóxicas, apresentam consideráveis atividades cardiotônicas, assim, acredita-se que as homopumiliotoxinas, as desmetilpumiliotoxinas e as desidrodesmetilpumiliotoxinas também devam apresentar. Nesse sentido, a síntese destes compostos é de extrema valia para a comunidade científica. As diazocetonas α,β-insaturadas são intermediários promissore

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3

Bailey, Christopher David. "New Pd(II) Catalysed C-H Insertion Reactions of Aryl Ureas." Thesis, University of Bristol, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.520217.

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4

Erhunmwunse, Orobosa Marvis. "Template directed C-H insertion reactions for stereocontrolled synthesis of heterocycles." Thesis, Durham University, 2009. http://etheses.dur.ac.uk/259/.

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Template Directed C-H Insertion Reactions for Stereocontrolled Synthesis of Heterocycles Orobosa Marvis Erhunmwunse, PhD. Non aromatic heterocycles and their analogues are abundant in a large variety of bioactive natural products and continue to play crucial roles in modern day chemotherapy. The bioactivities of these heterocycles are highly dependent on the stereochemistry of the substituents and therefore the development of elegant new methodologies for the selective construction of heterocycles remains attractive to the synthetic chemist. Described in this thesis, is a tandem methodology fo

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5

Annapureddy, Raja Sekarreddy. "Ruthenium porphyrin catalyzed carbene mediated C-H insertion and cycloaddition reactions." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hdl.handle.net/10722/206316.

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6

Pintori, Didier Gil. "Novel benzyne insertion reactions & medium-ring synthesis by oxidative C-H coupling." Thesis, University of Edinburgh, 2011. http://hdl.handle.net/1842/5669.

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This thesis is divided into two main chapters, which are focused on two separated and uncorrelated research areas. The first part of this thesis is dedicated to the research I carried out in benzyne chemistry and the second part is focused on catalytic C-H bond activation. In the first place, a novel insertion reaction of arynes into the nitrogen-carbonyl σ-bond of amides has been investigated as a rapid and powerful approach for the preparation of valuable ortho-disubstituted arenes. Readily available aromatic amides undergo smooth insertion when treated with O-triflatophenyl silane aryne pre

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7

Grand, Simon Christopher. "The synthesis of carbocyclic nucleoside analogues using rhodium carbenoid C-H insertion reactions." Thesis, University of Nottingham, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367403.

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8

Mariani, Francesco. "New Palladium-Catalysed Intramolecular Coupling Reactions: Nucleophilic Addition toAldehydes and C-H Carbene Insertion." Doctoral thesis, Universitat de Barcelona, 2016. http://hdl.handle.net/10803/398849.

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Although sygma-aryl and sygma-vinylpalladium(II) complexes are commonly used as electrophiles in C—C bond forming reactions, recent research has demonstrated that the same palladium intermediates can also react with carbon-heteroatom multiple bonds in a nucleophilic manner. Continuing with the interest of our group on the palladium-catalysed intramolecular coupling of aryl halides whit carbonyl compounds, we have expanded our previous findings to substrates containing other carbon-heteroatom multiple bonds. In this context, the first objective of the PhD Thesis has been the study of the dua

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9

Cleary, Sarah Elizabeth. "Fragmentation, Rearrangement, And C-H Insertion: Reactions Of Vinyl Cations Derived From Diazo Carbonyls." ScholarWorks @ UVM, 2018. https://scholarworks.uvm.edu/graddis/925.

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Many commercialized medicinal compounds are analogs of chemicals isolated from sources found in nature (also called natural products). However, the natural sources of these chemicals, such as plants, fungi, or insects, only offer small quantities of these bioactive agents. Thus, it is typically desirable to find ways to synthesize these products and their analogs in large quantities using cost-effective methods that also minimize the impact on the environment. It is also important to develop strategies that expedite the process of modifying the natural products, which allows medicinal chemists

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10

Lee, Elaine C. "Improved synthesis and application of planar-chiral nucleophilic catalysts in asymmetric reactions and copper-catalyzed enantioselective N-H insertion reactions." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/39741.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 2007.<br>Vita.<br>Includes bibliographical references.<br>The development of an improved synthesis of nucleophilic planar-chiral catalysts is described in Chapter 1. This route is amenable to scale-up and preparative chiral HPLC is unnecessary to resolve the racemic catalysts. Using planar-chiral catalysts, two synthetic methodology projects have been developed: Chapter 2 describes the first asymmetric synthesis of trans P-lactams, and Chapter 3 describes the asymmetric synthesis of tertiary a-chloroesters. In the chap

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11

Pérez, Janer Ferran. "Palladium in azaheterocyclic synthesis: α-arylation of sulfones, domino processes and C-H carbene insertion reactions". Doctoral thesis, Universitat de Barcelona, 2018. http://hdl.handle.net/10803/586010.

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Among transition metals used in organic chemistry, palladium has greatly contributed to the development of modern organic synthesis. This thesis is focused on the development of novel and efficient methodologies for the synthesis of nitrogen heterocycles employing palladium catalysed reactions. In this work, DFT calculations complement the experimental work in order to gather mechanistic insights of the reported transformations. In the first part of the thesis an exhaustive study of the intramolecular palladium catalysed α-arylation of sulfones is described. This metal-mediated process was su

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12

Hernandez, Sanchez Dalyanne N. "Synthesis of Chiral Salen-type Ligands for Iridium Catalysts Used in C-H Bond Insertion Reactions." Kent State University Honors College / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=ksuhonors1620475657966529.

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13

Keipour, Hoda. "Non-enantioselective and enantioselective synthetic transformations using copper and iron salts for diazo insertion reactions into Si–H and S–H bonds and hydrosilylation reactions of ketones." Doctoral thesis, Université Laval, 2017. http://hdl.handle.net/20.500.11794/31424.

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Cette thèse décrit la découverte de transformations synthétiques énantiosélectives et non énantiosélectives dans lesquelles des catalyseurs chiraux et environnementalement bénins à base de cuivre, de fer et de zinc sont utilisés pour des réactions d’insertion de diazos dans les liaisons Si–H et S–H et pour des réactions d’hydrosilylation de cétones. Des réactions énantiosélectives et non énantiosélectives d’insertion de métal-carbènes d’α-diazoesters catalysées par le cuivre et le fer dans les liaisons Si–H et S–H sont décrites. Nous avons réussi à développer un protocole efficace pour la réac

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14

King, Gary D. "Synthesis of carbocyclic 2'-deoxynucleosides using transition metal mediated metallocarbenoid C-H insertion reactions of suitable diazoketones." Thesis, University of Nottingham, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.324480.

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15

Lepage, Romain. "The bidirectional C-H insertion approach in the synthesis of cyclic structures, and, computational studies on important reactions in organic synthesis." Thesis, Griffith University, 2017. http://hdl.handle.net/10072/370985.

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This thesis describes the development of a new methodology for the synthesis of spiroacetals. 5,5-Spiroacetals are common in a wide variety of biologically active natural products, from insect pheromones to highly potent anti-cancer agents. The threedimensionality of their structures has proven to be an important feature for their biological activity, making these structural motifs privileged scaffolds in medicinal chemistry, especially in fragment-based drug discovery, as building blocks for research purposes, or as chiral ligands for asymmetric catalysis. Although there are numerous syntheti

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16

Stengel, Jason H. "The Application of Tandem O-H Insertion/Ring-Closing Metathesis to the Synthesis of Unsaturated Cyclic Ethers: Approaches to Rogioloxepane and Isolaurepinnacin." Ohio : Ohio University, 2010. http://www.ohiolink.edu/etd/view.cgi?ohiou1260473764.

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17

Sarnpitak, Pakornwit. "Scaffold-oriented Synthesis for Drug Discovery." Thesis, Griffith University, 2017. http://hdl.handle.net/10072/366103.

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The design and synthesis of three different scaffolds of nitrogen heterocycles have been achieved by using either methods described in the literature or newly developed synthetic methodologies/routes. The three synthesised libraries in this thesis were based on Pd-catalysed N-arylations, Castagnoli-Cushman multicomponent reaction, and Rh(II)-catalysed intramolecular C-H insertions. The compounds were successfully synthesised in moderate to excellent yields. Firstly, one of the synthesised diaryl imidazolines was found to be a selective COX-2 inhibitor due to its comparable activity to the appr

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18

Wenjie, Lu. "Synthesis and Evaluation of Functionalized Dirhodium(II) Carboxylate Catalysts Bearing Axially Chiral Amino Acid Derivatives." 京都大学 (Kyoto University), 2017. http://hdl.handle.net/2433/225528.

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19

Halvachizadeh, Jaleh. "The Investigation of Reactions of Atomic Metal Anions with Small Hydrocarbons and Alcohols in the Gas Phase." Thèse, Université d'Ottawa / University of Ottawa, 2014. http://hdl.handle.net/10393/30646.

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Hydrocarbons are an abundant resource of carbon and hydrogen. For example, fossil can be used to produce useful organic compounds. However hydrocarbons seem to be inert. Thus, the activation of the C-H bond is a popular research area. Metals play the main role in most catalysts that convert hydrocarbons to starting materials in industry. The study of metals is important because the properties of the metal core greatly influences the reactivity of a catalyst.1 The study of the chemistry of metals in the gas phase provides valuable information about the properties of metals. This information ca

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20

Walker, Stephen. "A MATRIX ISOLATION SPECTROSCOPIC INVESTIGATION INTO THE REACTION PRODUCTS OF VANADIUM METAL ATOMS WITH PROPENE." Thesis, 2009. http://hdl.handle.net/1974/2597.

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The products of vanadium metal atom reactions with propene and some propene isotopomers (propene-d6 and propene-3,3,3-d3) are investigated using FT-IR matrix isolation. The major product from the condensation of V atoms with propene at elevated mole ratios is found to be propane (C3H8), the production of which is seen to increase as concentration of propene increases. Additionally a matrix isolated product formed after metal atom insertion into the C-H bond of propene at low propene mole ratios is isolated and identified. The location of the insertion site is identified as one of the methyl h

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21

Liu, Syuan-Ru, and 劉軒如. "1.The Studies of N-Phenyl Camphorpyrazolidinone Derived a-Diazocarbonyl in Diastereoselective N-H Insertion Reaction 2. Asymmetric Organocatalytic Michael Reaction for the Synthesis of Quaternary Carbon-Containing Compounds." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/15125665168156272494.

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碩士<br>國立臺灣師範大學<br>化學系<br>98<br>This dissertation was divided into two parts, they are as follows: The first part represents to study the chiral auxiliary mediated diastereoselective N-H insertion by using the modified derivative from N-phenyl camphorpyrazolindione (110). The reaction was carried out in CH2Cl2 at ambient temperature, by using the α-diazocarbonyl compound (123) as the starting material and catalytic amount of rhodium acetate (5 mol%) generate metallocarbene intermediate. This was followed by addition of amine source (124). In this process N-H insertion products were obtained in

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22

Chamni, Supakarn. "New Diazo Reagents and Applications of β-Lactones for Synthesis and Biological Evaluation of Natural Products". Thesis, 2011. http://hdl.handle.net/1969.1/ETD-TAMU-2011-12-10413.

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Natural products are essential tools for basic cellular studies leading to the identification of medically relevant protein targets and the discovery of potential therapeutic agents. We have developed a set of second generation diazo reagents with small steric footprints, namely an alpha-trifluoroethyl (HTFB) diazo reagent, for simultaneous arming and SAR studies of bioactive natural products. The Rh(II)-catalyzed O-H insertions of several alcohol-containing natural products, including the potent translation inhibitor lactimidomycin, are investigated and useful reactivity and both chemo- and s

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23

Zhou, Andrew Z. "Biocatalytic Lactone Carbene C–H, B–H, and N–H Insertion Reactions Enabled by Directed Evolution." Thesis, 2021. https://thesis.library.caltech.edu/14287/1/Zhou%20Andrew_Senior_Thesis_Final.pdf.

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Enzymes are biological catalysts, and they accelerate reactions by lowering the activation barrier. In nature, enzymes have been optimized by natural selection and possess precise three-dimensional active sites. With these active sites, they can typically catalyze reactions with high efficiency and specificity. Compared to traditional catalysts, enzymes are generally more environmentally friendly, and they can catalyze reactions in water and at ambient temperature and pressure. However, native enzymes are usually only well suited for a restricted range of substrates and are limited in the typ

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24

林佳緯. "Applications of Chiral Oxidovanadium(V) Methoxides Bearing Chiral N-Salicylidine tert-butylglycinates in Enantioselective N-H Insertion and Transamination Reactions." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/87923660242086507084.

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25

(11155014), John M. Andjaba. "Catalytic Nitrene Reactions Enabled By Dinuclear Nickel Catalysts." Thesis, 2021.

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<div><p>Nitrenes are reactive intermediates that are known to generate high interest organic molecules. Due to their inherent instability, nitrenes are often stabilized by introducing them to transition metal complexes. Many transition metal stabilized nitrenes (M=NR<sub>2</sub>) have been reported and some of these complexes have been shown to control nitrene reactivity and selectivity. Transition metal nitrene reactivity can be categorized into two main groups: bond-insertion and group transfer reactions. In the reference to the former, chapter one of this dissertation highlights using uniqu

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26

沈書輔. "Applications of Chiral Oxidovanadium(V) Methoxides Bearing Chiral N-Salicylidine tert-butylglycinates in Enantioselective 1,4-Conjugate Addition and N-H Insertion Reactions." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/32150491376893148781.

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27

Ferro, Rita Leonor Veiga da Silva e. Veiga 1979. "Theoretical investigation of the energy of olefin-and sila-olefin insertion/β-H elimination reactions of two late transition metals - DFT MO calculations". Doctoral thesis, 2013. http://hdl.handle.net/10451/9912.

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Tese de doutoramento, Química (Química Inorgânica), Universidade de Lisboa, Faculdade de Ciências, 2013<br>The energetic of the olefin insertion/ -H elimination processes is going to be studied using density functional theory (B3LYP/SDD, Gaussian 03). The observed trends based on steric and electronic properties of two late transition metals (Co and Rh) and ligands (L) are reproduced.In a [L3M(C2H4)(H) (M=Co, Rh; L=PMe3, PF3) neutral complex the isomer with a -agostic metal-H-C interaction becomes stabilized when a rather less electron-donating ligand (e.g. PF3) is involved. Comparison of t

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28

Saladin, Sandra [Verfasser]. "Exploring the reactivity of α-triorganylsilyl [alpha-triorganylsilyl] α-diazo esters [alpha-diazo esters] : C-H activation, insertion reactions, and rearrangements / vorgelegt von Sandra Saladin". 2004. http://d-nb.info/972738312/34.

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