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Chiral separation of modifiers: summary research report II (VJ01010065-V3)
Storch, Jan
Preliminary result (VJ01010065-V2) of the project Express and portable detection of banned compounds with using innovative techniques: flexible and chiral SERS, selective surface extraction, neural networks (VJ01010065), provides detailed information on the chiral resolution of modifiers - helicenes to individual optically pure forms, which will be used for modification of SERS active surfaces in the future project.\nThe report is an output of the WP2a stage, which was carried out in the period 1/2022 - 12/2022 according to project documentation. The modifiers prepared under WP1b were separated during this year using chiral HPLC to optically pure forms. Since these compounds, are mostly newly prepared, a completely new method of chiral separation had to be developer for each molecule. First in the analytical scale, then at the preparative scale.\n
Synthesis of modifiers: summary research report I (VJ01010065-V1)
Storch, Jan
The present result (VJ01010065-V1) of the project Express and portable detection of banned compounds using innovative techniques: flexible and chiral SERS, selective surface extraction, neural networks (VJ01010065), provides detailed information on the synthesis of modifiers - helicenes, which will be further utilized for the modification of SERS active surfaces within the project. \nThe report is a planned output of the WP1b stage, which was implemented in the period 1/2021 - 12/2021 according to the project documentation.\n\n
The synthesis of π-electron systems suitable for transfer and retention of charges
Nejedlý, Jindřich ; Starý, Ivo (advisor) ; Tobrman, Tomáš (referee) ; Storch, Jan (referee)
The aim of my Thesis was to develop a general synthetic methodology for the preparation of long helicenes equipped with suitable functional groups that control their solubility or serve as anchoring groups for attachment to metallic surfaces, especially gold. The well-established transition metal catalyzed [2+2+2] cyclotrimerization of triynes was selected as the key scaffold-forming transformation in the synthesis of long helicenes because of its high regioselectivity, atom efficiency, functional group tolerance and general robustness. A modular approach was used for the preparation of the starting oligoynes, thus enabling a high level of their structural diversity. Individual resorcinol- based aromatic building blocks were interconnected by Sonogashira cross-coupling reactions, providing complex cyclization precursors encompassing up to twelve alkyne units pre-arranged for the multiple [2+2+2] cycloisomerization to produce three six- membered rings from each set of three neighboring alkyne units. Thus, a small series of long helicenes with up to 19 rings constituting the helical scaffold was synthesized. The quadruple cyclization leading to the longest oxahelicene prepared to date was performed in a high-temperature-high-pressure flow reactor at 250 řC in the presence of CpCo(CO)2. The set of...
The synthesis of π-electron systems suitable for transfer and retention of charges
Nejedlý, Jindřich ; Starý, Ivo (advisor) ; Tobrman, Tomáš (referee) ; Storch, Jan (referee)
The aim of my Thesis was to develop a general synthetic methodology for the preparation of long helicenes equipped with suitable functional groups that control their solubility or serve as anchoring groups for attachment to metallic surfaces, especially gold. The well-established transition metal catalyzed [2+2+2] cyclotrimerization of triynes was selected as the key scaffold-forming transformation in the synthesis of long helicenes because of its high regioselectivity, atom efficiency, functional group tolerance and general robustness. A modular approach was used for the preparation of the starting oligoynes, thus enabling a high level of their structural diversity. Individual resorcinol- based aromatic building blocks were interconnected by Sonogashira cross-coupling reactions, providing complex cyclization precursors encompassing up to twelve alkyne units pre-arranged for the multiple [2+2+2] cycloisomerization to produce three six- membered rings from each set of three neighboring alkyne units. Thus, a small series of long helicenes with up to 19 rings constituting the helical scaffold was synthesized. The quadruple cyclization leading to the longest oxahelicene prepared to date was performed in a high-temperature-high-pressure flow reactor at 250 řC in the presence of CpCo(CO)2. The set of...
Complexation Properties of Aza[n]phenacene Ligands.
Váňa, Lubomír ; Žádný, Jaroslav ; Storch, Jan ; Církva, Vladimír
This work is aimed at the synthesis of new aza[n]phenacenes 2 (n = 4 or 5, Ar = phenyl or 2-pyridyl), where [njphenacenes 1 with ö-lactam ring are used as starting material. The resulting compounds are subsequenttly investigated in terms of their complexation properties with transition metals (Cu, Ni, Co, Pt, Ir) due to their potential application as photoluminescent complexes.
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Plný tet: 00206B6C274C191114122808 - Download fulltextDOC
Synthetic Pathways Leading to Novel Types of Phosphahelicenes.
Beránek, Tomáš ; Sýkora, Jan ; Žádný, Jaroslav ; Storch, Jan
The goal of this work is to explore possible synthetic ways leading to these new members of the helicene family.
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Plný tet: 00206B6C274C191114122801 - Download fulltextDOC
Visible Light Promoted Derivatizations of Helicenes.
Jakubec, Martin ; Storch, Jan ; Ghosh, I. ; König, B.
We developed new reductive and oxidative approaches to late-stage derivatization exploiting intrinsic photochemistry of helicenes with emphasis on the use of very simple and readily available bromo- and aminohelicenes.
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Plný tet: 00206B6C274C191114122755 - Download fulltextDOC

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