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4 article(s) from Niemeyer, Jochen

Computational model predicts protein binding sites of a luminescent ligand equipped with guanidiniocarbonyl-pyrrole groups

Neda Rafieiolhosseini,
Matthias Killa,
Thorben Neumann,
Niklas Tötsch,
Jean-Noël Grad,
Alexander Höing,
Thies Dirksmeyer,
Jochen Niemeyer,
Christian Ottmann,
Shirley K. Knauer,
Michael Giese,
Jens Voskuhl and
Daniel Hoffmann

Beilstein J. Org. Chem. 2022, 18, 1322–1331, doi:10.3762/bjoc.18.137

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Graphical Abstract

Figure 1: AIE-active molecule 1. (a) Structure of 1 with color-coded subunits AIE, lysine, and GCP. (b) Coars...

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Figure 2: 14-3-3ζ from (a) top and (b) side with the two monomers in red and blue. In the top view the centra...

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Figure 3: Workflow of the computational approach used in this study. The protein structure and the structure ...

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Figure 4: Log-scaled histogram of total energies at the final steps of all simulations. (a) Simulated anneali...

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Figure 5: Sampled positions of the AIE moiety colored according to the total energy of 1 from dark red (lowes...

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Figure 6: Minimum energy conformations of AIE ligand in the absence (a,b) and presence (c,d) of C-Raf peptide...

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Full Research Paper

Published 23 Sep 2022

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BINOL as a chiral element in mechanically interlocked molecules

Matthias Krajnc and
Jochen Niemeyer

Beilstein J. Org. Chem. 2022, 18, 508–523, doi:10.3762/bjoc.18.53

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Figure 1: Molecular structures of (R)-BINOL (left) and (S)-BINOL (right).

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Figure 2: Synthesis of Sauvage´s [2]catenanes (S,S)-5 and (S,S)-6 containing two BINOL units by the passive m...

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Figure 3: Synthesis of Saito´s [2]rotaxane (R)-10 from a BINOL-based macrocycle by the active metal template ...

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Figure 4: Synthesis of Stoddart´s [2]rotaxane (rac)-14 by an ammonium crown ether template.

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Figure 5: Synthesis of Stoddart´s BINOL-containing [2]catenanes 18/20/22/24 by π–π recognition.

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Figure 6: Synthesis of Takata´s rotaxanes featuring chiral centers on the axle: a) rotaxane (R,R,R/S)-27 obta...

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Figure 7: Takata´s chiral polyacetylenes 32/33 featuring BINOL-based [2]rotaxane side chains.

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Figure 8: Synthesis of Takata´s chiral thiazolium [2]rotaxanes (R)-35a/b and (R)-38.

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Figure 9: Results for the asymmetric benzoin condensation of benzaldehyde (39) with catalysts (R)-35a/b and (R...

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Figure 10: Synthesis of Takata´s pyridine-based [2]rotaxane (R)-42.

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Figure 11: The asymmetric desymmetrization reaction of meso-1,2-diols with rotaxane (R)-42.

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Figure 12: Synthesis of Niemeyer´s axially chiral [2]catenane (S,S)-47.

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Figure 13: Results for the enantioselective transfer hydrogenation of 2-phenylquinoline with catalysts (S,S)-47...

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Figure 14: Synthesis of Niemeyer´s chiral [2]rotaxanes (S)-56/57.

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Figure 15: Results for the enantioselective Michael addition with different rotaxane catalysts (S)-56a/56b/57a/...

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Figure 16: Synthesis of Beer´s [2]rotaxanes 64a/b for anion recognition.

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Figure 17: Association constants of different anions (used as the Bu₄N⁺ salts) to the [2]rotaxanes (S)-64a/b a...

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Figure 18: Synthesis of Beer´s [3]rotaxane (S)-68.

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Figure 19: Association constants of different anions (used as the Bu₄N⁺-salts) to the [2]rotaxane (S)-68 and a...

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Review

Published 06 May 2022

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A tribute to Carsten Schmuck

Jochen Niemeyer,
Ivo Piantanida and
Thomas Schrader

Beilstein J. Org. Chem. 2021, 17, 2795–2798, doi:10.3762/bjoc.17.190

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Figure 1: Carsten Schmuck.

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Editorial

Published 29 Nov 2021

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Supramolecular polymers with reversed viscosity/temperature profile for application in motor oils

Jan-Erik Ostwaldt,
Christoph Hirschhäuser,
Stefan K. Maier,
Carsten Schmuck and
Jochen Niemeyer

Beilstein J. Org. Chem. 2021, 17, 105–114, doi:10.3762/bjoc.17.11

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Graphical Abstract

Figure 1: a) VII systems described by Sijbesma and Meijer, featuring two ureidopyrimidone BUs which are linke...

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Figure 2: a) GCP and ACP motif, as charged and neutral BUs and BINAM as precoordinating LU. b) Compounds 1, 2...

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Figure 3: Synthesis of compounds 1 to 4. Reagents and conditions: i) ʟ-Boc-glutamic acid benzyl ester, HCTU, ...

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Figure 4: a) 2D-screening in DMSO of the GCP derivative 1, specific viscosity vs concentration vs temperature...

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Figure 5: Comparison of the specific viscosities in dependence of the temperature of the ACP derivative (oran...

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Figure 6: DLS measurement of compound 2 in toluene at 25 °C, 60 °C and 100 °C.

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Figure 7: Specific viscosity of compounds 2, 3 and 4 in Nynas NS8 in dependency to the temperature.

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Figure 8: Specific viscosity of compound 4 in Nynas NS8 and Nexbase 3020.

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Published 12 Jan 2021

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