Celine Bittner
Braunschweig University of Technology
5 Papers
2 Citations
Celine Bittner is an academic researcher from Braunschweig University of Technology. The author has contributed to research in topics: Alkyne metathesis & Catalysis. The author has an hindex of 4, co-authored 5 publications.
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Papers
Tuning the Catalytic Alkyne Metathesis Activity of Molybdenum and Tungsten 2,4,6-Trimethylbenzylidyne Complexes with Fluoroalkoxide Ligands OC(CF3)nMe3–n (n = 0–3)
TL;DR: The molybdenum and tungsten 2,4,6-trimethylbenzylidyne complexes [MesC≡M{OC(CF3)nMe3−n}3] (M = Mo: MoF0, n = 0; MoF3, n= 1; MoFs6, n. = 2,2-dimethoxyethane) were obtained by the reaction of the tribromides with the corresponding potassium alkoxides.
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Alkyne Metathesis with Silica‐Supported and Molecular Catalysts at Parts‐per‐Million Loadings
Deven P. Estes,Celine Bittner,Òscar Àrias,Martin Casey,Alexey Fedorov,Matthias Tamm,Christophe Copéret +6 more
TL;DR: Both 1 and 1/SiO2-700 showed very high activity, selectivity, and stability in the self-metathesis of a variety of carefully purified alkynes, even at parts-per-million catalyst loadings.
41
Identification of a Grain Beetle Macrolide Pheromone and Its Synthesis by Ring-Closing Metathesis Using a Terminal Alkyne
Susann Hötling,Celine Bittner,Matthias Tamm,Sonja Dähn,Jana Collatz,Johannes L. M. Steidle,Stefan Schulz +6 more
TL;DR: Cucujolide XI is the first macrolide pheromone oxidized at the ω-4 position, and the synthesis used ring-closing alkyne metathesis as a key step.
30
Formation of alkyne-bridged ferrocenophanes using ring-closing alkyne metathesis on 1,1'-diacetylenic ferrocenes.
TL;DR: The solvent-dependant reactivity of 2a towards Ag(SbF6) is investigated, leading to oxidation and formation of the ferrocenium hexafluoroantimonate 4 in dichloromethane, whereas the silver(I) coordination polymer 5 was isolated from THF solution.
2
Molecular and Silica-Supported Molybdenum Alkyne Metathesis Catalysts: Influence of Electronics and Dynamics on Activity Revealed by Kinetics, Solid-State NMR, and Chemical Shift Analysis.
Deven P. Estes,Christopher P. Gordon,Alexey Fedorov,Wei-Chih Liao,Henrike Ehrhorn,Celine Bittner,Manuel Luca Zier,Dirk Bockfeld,Ka Wing Chan,Odile Eisenstein,Odile Eisenstein,Christophe Raynaud,Matthias Tamm,Christophe Copéret +13 more
TL;DR: Solid-state NMR analysis of molecular and silica-supported metal alkylidyne catalysts coupled with DFT/ZORA calculations rationalize the NMR spectroscopic signatures and discernible activity trends at the frontier orbital level.