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Showing 1 to 7 of 7 for “"α-Diazocarbonyl compounds"”.
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Photochemical transformations of α-diazocarbonyl compounds in flow
… aspects of the reactivity of a series of α-diazocarbonyl compounds including aryldiazoacetates, α-diazo-β-ketoesters and an α-diazo-β-ketosulfone, under continuous flow photolysis. These photochemical transformations yielded 2,3-dihydrobenzofurans, γ- and β-lactones, oxazoles and Wolff …
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Investigation of catalyst effects in enantioselective copper- and rhodium-mediated transformations of α-diazocarbonyl compounds
… the synthesis and reactivity of a series of α-diazocarbonyl compounds with particular emphasis on the use of copper-bis(oxazoline)-mediated enantioselective C–H insertion reactions leading to enantioenriched cyclopentanone derivatives. Through the use of additives, the enantioselectivity …
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Design and use of novel metal catalysts in organic synthesis
… catalysts in transformations of α-diazocarbonyl compounds. Chapter One focuses on the literature background over the past thirty years in transition metal-catalysed asymmetric transformations of α-diazocarbonyl compounds. This overview aims to give an insight into the use of both …
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Design and synthesis of components for optically active metal-organic frameworks (MOFs) and synthetic routes to diverse deuterium labelled α-diazoacetates, α-diazoacetamides, α-diazoketones, and the antibiotic azaserine
… providing a highly effective chelating ligand. α-Diazocarbonyl compounds are useful intermediates for various chemical transformations. Although known since the mid-1800s, they still offer an area for future studies and development of preparative methods as well as applications. With the recently …
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Synthetic and stereochemical aspects of enantioselective copper catalysed C-H insertion reactions leading to cyclopentanones and sultones
… thesis describes the synthesis of a series of α-diazocarbonyl compounds including α-diazoβ-keto sulfones, α-diazo-β-keto phosphine oxides, 2-diazo-1,3-diketones and αdiazosulfonates, and their reactivity in intramolecular copper–bis(oxazoline)–NaBARF catalysed C–H insertion reactions. Excellent …
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Synthetic and mechanistic aspects of the reactions of α-diazosulfoxides
… with previous studies carried out on these compounds, the key reaction pathway of α-diazosulfoxides was found to be hetero-Wolff rearrangement to give α-oxosulfine intermediates. However, a competing reaction pathway involving oxygen migration from sulfur to oxygen was also observed. …
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Novel synthetic methodology employing transition metal catalysed reactions of α-diazo-β-keto sulfonamides and α-cyano-α-diazoacetates; the impact of substituents on the reaction pathway
… The precise impact of the substituents of an α-diazocarbonyl compound, on the ensuing rhodium- and copper-catalysed reaction pathway(s), is also examined in this work through comparison to analogous transformations reported previously in the group and in the literature. Chapter 1 contains a …