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Showing 1 to 20 of 145 for “"arene"”.
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Developing and Understanding Iridium-Catalysed Arene Borylation
… sequence allowed synthesis of biaryls from arene plus aryl halides in reaction times of minutes. Subsequent work focussed on the borylation of novel substrates classes, in particular quinolines. The borylation of substituted quinolines highlighted interesting electronic selectivity of the …
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Heterocyclic Calix[4]arene Derivatives for Fluorescence Investigations
… of a family of novel Schiff base capped calix[4]arenes. These ligands were prepared using three 1,3 bis-bromo-alkyl-disubstituted calix[4]arenes (ethyl, propyl and butyl), and ortho, meta and para substituted di-imine bridged diphenol units. All these reactions yielded the desired product with …
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Self-Assembly of Calix[4]Arene Amine Derivatives
A new family of calix[4]arene amine derivatives, which have been functionalised on both the upper and lower rim have been developed as potential duel metal ion binding complexes, and all were fully characterised. The lower rim was first functionalised with various groups such as benzyls and …
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Synthesis and reactions of arene oxide-oxepin systems.
Massachusetts Institute of Technology. Dept. of Chemistry. Thesis. 1973. Ph.D.
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Photochemistry of cyclopentadienyliron(II) arene complexes and tetraorganoborate salts
… benzonitrile (PhCN) leads to a loss of the arene ligand and formation of a tris-nitrile complex ( (CpFe(PhCN)$\sb3\rbrack\sp{+}$). Two important reactive intermediates are detected. One, formed from irradiation of the ion pair, is assigned as the ring-slipped $\eta\sp4$-arene-Cp-iron …
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Fused Arene-Based Molecular Systems as Additives for Organic Photovoltaics
… the molecular systems derived from fused arenes such as anthracene, pyrene, carbazole and thiophene for use as either a donor or an acceptor component of the active layer of OPVs. Two novel molecular systems (9- anthracenecarboxy-1-methylpyrene, (1) and Py-bi-TH-ANT, (2) were prepared …
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Arene bridged diuranium compounds supported by amide and ketimide ligands
… Intriguing Geometric and Electronic Structure of Arene-Bridged Diuranium Tetrakisamido Complexes The focus of this chapter is to characterize and contextualize the bridged arene complex (-toluene)U2(N[t-Bu]Ar)4 (lb2-gl-toluene, Ar = 3,5-C6H3Me2). To do so, lb2-g-toluene is compared extensively …
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Reactivity studies of arene-cis-diols in cycloadditions and potassium permanganate oxidations: synthesis of the corresponding arene-trans-diols and an approach to the synthesis of (+)-pancratistatin
… and novel cycloaddition chemistry of the arene-cis-diols (7) were investigated. It was found that permanganate oxidation of arene-cis-diols yielded a mixture of 2 products, (157a) and (157b) in low yield. The influence of the C1-substituent on the outcome of the reaction was found to be a …
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Synthesis and chemosensing ability of novel pyrene-isoxazole-calix[4]arene constructs
… as linker and ion-binding moiety and calixarene scaffold as ion-binding moiety - PIC.
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Synthesis of Novel Calix[4]arene Based Dendrimers and their Biological Applications
… the development and synthesis of multicalixarenes and their application in gene and drug delivery. Chapter 1 provides an introduction to gene therapy and calixarenes. The synthesis of two families of amino functionalised multicalixarenes are described. Evaluation of their toxicity and …
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Synthetic studies towards trichodermamide B: expedient synthesis enabled by arene oxide equivalents
… trichodermamide B have been conducted utilizing arene oxide equivalents as key synthetic intermediates. Notable synthetic transformations include alkylation with a novel, α–bromo oximoester electrophile and allylic bromination of an advanced, spirocyclic intermediate. This strategy has enabled …
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Crystal Structures of Four Arene Chromium Tricarbonyls and Two Other Inorganic Complexes
Made available in DSpace on 2014-12-09T17:35:44Z (GMT). No. of bitstreams: 1 6711831.pdf: 4450446 bytes, checksum: b017d46db1be0729f00492825dc72922 (MD5) Previous issue date: 1967
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Advances in medicinal inorganic chemistry: Exploiting the biological activity of metal arene complexes
Half-sandwich complexes containing transition metals offer a wide range of applications owing to their interactions with a variety of targets/molecules that are not accessible for some organic scaffolds. The use of such complexes is therefore a way to provide new mechanisms of action. In this …
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Understanding the Speciation of Ruthenium Arene Complexes as Precursors to Unnatural Enzyme Cofactors
Ruthenium arene complexes have been extensively explored as metallo-pharmaceuticals and as small molecule catalysts. Exploring the overlap between these areas, this thesis describes a body of work aimed at quantitatively understanding the biological speciation and catalytic behaviour of ruthenium …
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The Exploration of a Strategy for Regioselective Arene Amination Utilising Non-Covalent Interactions
The formation of arene C-N bonds for the preparation of anilines is one of the most used reactions in industry and academia. Numerous methods which utilise reactive N-centred radicals for the synthesis of anilines from arenes have recently been developed. However, regiochemical control is a major …
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Controlling the Regio- and Enantioselectivity of Iridium-Catalysed Arene Borylation Using Sulfonated Bipyridine Ligands
… and enantioselectivity of iridium-catalysed arene borylation, an incredibly synthetically useful transformation that commonly suffers from a lack of regioselectivity, and for which enantioselective variants are very few. The strategy followed involved the design and synthesis of novel …
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Synthesis, characterization, and anticancer activity of arene mono-ruthenium and heteroleptic mixed-valent diruthenium complexes
… to synthesize and characterize organometallic arene mono-ruthenium and diruthenium complexes that have anti-neoplastic properties against the oestrogen receptor positive MCF-7, and the triple negative aggressive and invasive MDA-MB-231 human breast cancer cell lines. The preparation of …
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Design of Lewis Acidic Pnictenium Ions Using Carbone and Capping Arene Ligands for Bond Functionalization
… ligands, such as carbodicarbenes and capping arene ligands, and explores their potential in Lewis acid-mediated chemistry. In Chapter Two, the synthesis and characterization of a series carbodicarbene-pnictenium ions is described. The utilization of strongly donating carbodicarbene ligands …
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Synthesis, characterization and anticancer studies of multinuclear ruthenium(II) arene complexes based on a dendritic scaffold
A series of monodentate (N-) and chelating bidentate (N,N-, N,O-), monomeric and dendritic ligands based on a poly(propyleneimine) dendrimer scaffold were synthesized via Schiff base condensation reactions of the relevant amine and appropriate aldehydes. These reactions yielded air- and …
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