Zukünftige Termine
Events die der OC oder GDCh zuzuordnen sind.
- 2025-11-04T11:00:00+01:00
- 2025-11-04T12:00:00+01:00
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DienstagOC-Seminar: Prof. Dr. Viktor Iaroshenko 1
Prof. Dr. Viktor Iaroshenko, Matej Bel University: Late-stage functionalization of aromatic compounds under mechanochemical conditions The presented research aimed at development of new methodologies for straightforward introduction/transformation of common organic functional groups in complex aromatic and heteroaromatic compounds under mechanochemical conditions. This covers four main areas: functionalization of in situ generated N-aryl pyridinium salts (formation C-C and C-Het(O, F) bonds as a result of C-N bond cleavage; late-stage functionalization of O-unprotected phenols (introduction of - CF3 group as well as aromatic and heteroaromatic functionalities in place of the OH); aliphatic C-F bond activation utilizing oxides of rare-earth elements (practical late-stage transformation of -CF3 group); utilization of nanocellulose and nanochitin as efficient reaction media in solid-state mechanochemical synthesis.
- 2025-11-11T11:00:00+01:00
- 2025-11-11T12:00:00+01:00
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DienstagOC-Seminar: Prof. Rafael Gramage-Doria, University of Rennes 1 2
Prof. Rafael Gramage-Doria, University of Rennes 1: Homogeneous metal Catalysis: from sustainable transformations to supramolecular approaches The generation of more efficient, atom- and step-economy transformations is of primary importance to meet the societal challenges associated the 21st century. In this context, transition metal catalysis is an enabling technology and, in our laboratories, we have developed a number of sustainable approaches dealing with C-H bond functionalizations, one-pot multi-step sequences, direct reductive aminations, amongst others. They aim at minimizing chemical wastes while controlling metal’s reactivity. On another hand, we have developed metal-catalyzed transformations which are controlled by remote, kinetically labile interactions taking place in the secondary coordination sphere of the metal catalyst.
- 2025-11-18T17:15:00+01:00
- 2025-11-18T19:00:00+01:00
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DienstagGDCh-Kolloquium: Prof. Dr. Prince Ravat, Prof. Dr. Oliver Dumele 3
Prof. Dr. Prince Ravat, Prof. Dr. Oliver Dumele, Universität zu Köln Twisting Light and Spin: Helicenes as Multifunctional Molecular Spring Helicenes, with their characteristic corkscrew-shaped geometry, serve as versatile molecular scaffolds for constructing configurationally robust chiral functional materials through precise structural design. Ravat group focuses on leveraging this unique architecture to control electronic and (chir)optical properties at the molecular level. Dumele group has employed helicenes as building blocks for two-dimensional covalent organic frameworks (COFs), uncovering their crystalline order arising from homochiral (enantiopure) or racemic packing modes. This work has led to an unexpected discovery — the same [5]helicene can act as a photochemical spin-state switch, enabling reversible control of the magnetism with light.
- 2025-12-02T10:00:00+01:00
- 2025-12-02T10:30:00+01:00
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DienstagOC-Seminar: Prof. Dr. Tanja Gulder 4
Prof. Dr. Tanja Gulder, Saarland University: Halogen Atoms as Directing Tools: From Reactivity to Bioactive Compounds Nature takes advantage of the beneficial properties of carbon-halogen (C,X) bonds and uses them as a strategic tool for assembling structurally complex frameworks. Likewise, installing a halogen atom in organic synthesis opens further transformations, particularly carbon-carbon (C,C) forming reactions. By harnessing the concept of cryptic halogenations using hypervalent iodane chemistry, electrochemistry, or combining enzyme and chemocatalysis, efficient multi-step sequences are performed in a straightforward way. In addition, our group utilizes fluorinated Lewis acid-Lewis base cooperative effects, thus steering transformations, such as terpene cyclizations, and activating strong bonds, e.g., for hydrogen isotope exchange, by creating dynamic and catalytically active supramolecular assemblies in solution.
- 2025-12-09T17:15:00+01:00
- 2025-12-09T19:00:00+01:00
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DienstagGDCh-Kolloquium: Young Scientists Introduce Themselves 5
Junge Forscherinnen und Forscher der Bonner Chemie stellen sich vor Anschließend: Snacks und Getränke mit dem JCF Bonn
- 2025-12-16T11:00:00+01:00
- 2025-12-16T12:00:00+01:00
16
DienstagOC-Seminar: Jun.-Prof. Dr. J. Walker, University of Göttingen 6
Jun.-Prof. Dr. Johannes C. L. Walker, University of Göttingen: Photochemical and Stereoselective Approaches to Bridged Bicyclic Architectures Saturated, polycyclic structures are in high demand as novel building blocks in drug discovery programmes.Their greater number of saturated, sp3-hybridised carbon atoms has been associated with an improved aqueous solubility and metabolic stability compared to their unsaturated, benzene-based analogues. Structurally rigid examples such as bicyclo[1.1.1]pentanes have been proposed as bioisosteres of para-substituted benzenes but the numerous exit vectors of these and related polycyclic structures present additional opportunities for accessing untapped chemical space. Despite the potential breadth of application of these types of compounds, flexible, and particularly stereoselective, approaches for the synthesis of polysubstituted bridged bicyclic motifs remain relatively rare.
- 2026-01-13T17:15:00+01:00
- 2026-01-13T19:00:00+01:00
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DienstagGDCh-Kolloquium: Prof. Dr. Eva Hevia 7
Prof. Dr. Eva Hevia, Universität Bern Titel wird noch bekannt gegeben Anschließend: GDCh-Preisverleihung
- 2026-02-03T10:00:00+01:00
- 2026-02-03T12:00:00+01:00
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DienstagOC-Seminar: Prof. Shoubhik Das 8
Prof. Shoubhik Das, University of Bayreuth Lighting the Way: Photocatalysis for a Sustainable Chemical Future In this lecture, I will introduce the exciting field of photocatalysis and explain how it is helping us reimagine the foundations of chemistry. We will explore how new light-responsive materials are designed, how they can help recycle plastics or create renewable fuels, and why they are central to achieving a circular economy. Along the way, I will share examples of recent breakthroughs and discuss the challenges that remain before these technologies become part of our daily lives. By “lighting the way,” photocatalysis shows us how the simple power of light can be transformed into a key tool for sustainability, opening new possibilities for chemistry that is both innovative and kinder to our planet.
- 2026-05-10T15:00:00+02:00
- 2026-05-13T13:00:00+02:00
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SonntagKOPO 2026 9
CONJUGATED OLIGOMERS AND POLYMERS As in the past, KOPO 2026 will provide an overview on new developments in the area of pi-conjugated oligomers and polymers and functional dyes and will strengthen the cooperation within the scientific community. KOPO 2026 is a platform for exchanging know-how and new ideas between experienced and young colleagues. Therefore, we encourage participation of young academics and students. The topics will cover all kinds of synthetic and physical aspects of pi-conjugated molecules and polymers.
Links
- https://www.chemie.uni-bonn.de/oc/de/veranstaltungen/oc-seminar-prof-dr-viktor-iaroshenko
- https://www.chemie.uni-bonn.de/oc/de/veranstaltungen/oc-seminar-prof-rafael-gramage-doria-university-of-rennes-1
- https://www.chemie.uni-bonn.de/de/gdch/gdch-events/gdch-kolloquium-prof-dr-prince-ravat-prof-dr-oliver-dumele
- https://www.chemie.uni-bonn.de/oc/de/veranstaltungen/oc-seminar-prof-dr-tanja-gulder
- https://www.chemie.uni-bonn.de/de/gdch/gdch-events/gdch-kolloquium-young-scientists-introduce-themselves
- https://www.chemie.uni-bonn.de/oc/de/veranstaltungen/oc-seminar-jun-prof-dr-j-walker-university-of-goettingen
- https://www.chemie.uni-bonn.de/de/gdch/gdch-events/gdch-kolloquium-prof-dr-eva-hevia
- https://www.chemie.uni-bonn.de/oc/de/veranstaltungen/oc-seminar-prof-shoubhik-das-1
- https://www.chemie.uni-bonn.de/oc/de/veranstaltungen/kopo-2026