Explanipedia

Reactivity of δ‐Functionalized Para‐Quinone Methides in Nucleophilic Addition Reactions Open

Christoph Groß, Andreas Eitzinger, Péter Mayer, Armin R. Ofial · 2025

The electrophilic reactivities of para ‐quinone methides ( p QMs) with functional groups (FG) at the exocyclic polarized carbon–carbon double bond were determined by photometrically monitoring the kinetics of their reactions with carbanion…

Two Plus Four Equals Three–Iron(II)/Iron(IV) Comproportionation as an Additional Pathway for Iron(IV)-Oxido Reactions Open

Niko S. W. Jonasson, Annika Menke, Laura Senft, Andrea Squarcina, David Schmidl , et al. · 2025

Iron enzymes are ubiquitous in nature. In particular, enzymes with iron-oxygen cofactors as active sites perform a vast variety of reactions. Both iron(III)-hydroxido and iron(IV)-oxido species have been observed to play a catalytically ac…

Defining the Synthetic Scope of ortho‐Quinone Methides by Quantifying their Electrophilicity Open

Christoph Groß, Andreas Eitzinger, Nathalie Hampel, Péter Mayer, Armin R. Ofial · 2024

A series of aryl‐substituted ortho ‐quinone methides ( o QMs) was synthesised and structurally characterised. Kinetic studies of the nucleophilic additions of carbanions (reference nucleophiles) to o QMs were used to determine second‐order…

Directionality Reversal and Shift of Rotational Axis in a Hemithioindigo Macrocyclic Molecular Motor Open

Lilli Reißenweber, Edgar Uhl, Frank Hampel, Péter Mayer, Henry Dube · 2024

Molecular motors are central driving units for nanomachinery, and control of their directional motions is of fundamental importance for their functions. Light-driven variants use easy to provide, easy to dose, and waste-free fuel with high…

Science challenges and research opportunities for plasma applications in microelectronics Open

David B. Graves, Catherine B. Labelle, Mark J. Kushner, Eray S. Aydil, Vincent M. Donnelly , et al. · 2024

Low-temperature plasmas (LTPs) are essential to manufacturing devices in the semiconductor industry, from creating extreme ultraviolet photons used in the most advanced lithography to thin film etching, deposition, and surface modification…

Lactone Enolates of Isochroman-3-ones and 2-Coumaranones: Quantification of Their Nucleophilicity in DMSO and Conjugate Additions to Chalcones Open

Mohammad Sadeq Mousavi, Antonia Di Mola, Giovanni Pierri, Consiglia Tedesco, Magenta J. Hensinger , et al. · 2024

Owing to stereoelectronic effects, lactones often deviate in reactivity from their open-chain ester analogues as demonstrated by the CH acidity (in DMSO) of 3-isochromanone (pK_a = 18.8) and 2-coumaranone (pK_a<…

Directionality Reversal and Shift of Rotational Axis in a Hemithioindigo Macrocyclic Molecular Motor Open

Lilli Reißenweber, Edgar Uhl, Frank Hampel, Péter Mayer, Henry Dube · 2024

Molecular motors are central driving units for nanomachinery and control of their directional motions is of fundamental importance for their functions. Light-driven variants use an easy to provide, easy to dose, and waste free fuel with hi…

Enantioselective Syntheses of 3,4‐Dihydropyrans Employing Isochalcogenourea‐Catalyzed Formal (4+2)‐Cycloadditions of Allenoates Open

Magdalena Piringer, Mario Hofer, Lukas S. Vogl, Péter Mayer, Mario Waser · 2024

We herein successfully demonstrate the use of chiral isochalcogenoureas as Lewis Base catalysts for a variety of (4+2)‐cycloaddition reactions of allenoates and different Michael acceptors. In all cases the same structural key‐motive, a di…

CCDC 2233276: Experimental Crystal Structure Determination Open

Laura Köttner, Friederike Wolff, Péter Mayer, Esther Zanin, Henry Dube · 2024

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …

CCDC 2233275: Experimental Crystal Structure Determination Open

Laura Köttner, Friederike Wolff, Péter Mayer, Esther Zanin, Henry Dube · 2024

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …

CCDC 2302688: Experimental Crystal Structure Determination Open

Christian Steinborn, Tatjana Huber, Julian Lichtenegger, Immanuel Plangger, Denis Höfler , et al. · 2023

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …

CCDC 2302080: Experimental Crystal Structure Determination Open

Christian Steinborn, Tatjana Huber, Julian Lichtenegger, Immanuel Plangger, Denis Höfler , et al. · 2023

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …

CCDC 2302081: Experimental Crystal Structure Determination Open

Christian Steinborn, Tatjana Huber, Julian Lichtenegger, Immanuel Plangger, Denis Höfler , et al. · 2023

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …

CCDC 2302082: Experimental Crystal Structure Determination Open

Christian Steinborn, Tatjana Huber, Julian Lichtenegger, Immanuel Plangger, Denis Höfler , et al. · 2023

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …

CCDC 2297199: Experimental Crystal Structure Determination Open

Lukas S. Vogl, Péter Mayer, Raphaël Robiette, Mario Waser · 2023

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …

Chiral Isochalcogenourea‐Catalysed Enantioselective (4+2) Cycloadditions of Allenoates Open

Lukas S. Vogl, Péter Mayer, Raphaël Robiette, Mario Waser · 2023

Allenoates are versatile building blocks which are primarily activated and controlled using chiral tert. phosphine and tert. amine Lewis bases. We herein report the first example of allenoate activation by using chiral isochalcogenoureas (…

Chiral Isochalcogenourea‐Catalysed Enantioselective (4+2) Cycloadditions of Allenoates Open

Lukas S. Vogl, Péter Mayer, Raphaël Robiette, Mario Waser · 2023

Allenoates are versatile building blocks which are primarily activated and controlled using chiral tert. phosphine and tert. amine Lewis bases. We herein report the first example of allenoate activation by using chiral isochalcogenoureas (…

Cytotoxic Activity of Some Half‐sandwich Rhodium(III) Complexes Containing 4,4’‐disubstituted‐2,2’‐bipyridine Ligands Open

Marion Graf, Jasmine Ochs, Péter Mayer, Nils Metzler‐Nolte, Hans‐Christian Böttcher · 2023

The synthesis and characterization of three compounds [Rh(η 5 ‐C 5 Me 5 )Cl(N^N)]PF 6 (N^N=4,4’‐disubstituted‐2,2’‐bipyridines, 1–3 ) are described. The cationic complexes contain the bidentate ligands N^N=4,4'‐di‐ tert ‐butyl‐2,2'‐bipyrid…

Synthesis of Waixenicin A: Exploring Strategies for Nine‐Membered Ring Formation Open

Christian Steinborn, Tatjana Huber, Julian Lichtenegger, Immanuel Plangger, Denis Höfler , et al. · 2023

We present a comprehensive account on our efforts behind the recently published synthesis of waixenicin A. Our approach for constructing the dihydropyran ring relied on an Achmatowicz rearrangement. For the assembly of the nine‐membered ri…

Azotriptycenes: Photoswitchable Molecular Brakes Open

Willibald J. Stockerl, Lilli Reißenweber, Aaron Gerwien, Nicolai N. Bach, Stefan Thumser , et al. · 2023

The control of molecular motions is a central topic of molecular machine research. Molecular brakes are fundamental building blocks towards such goal as they allow deliberately decelerating specific motions after an outside stimulus is app…

CCDC 2216045: Experimental Crystal Structure Determination Open

Jonas Feldmann, Mads K. Skaanning, Marcus Lommel, Tobias Kernmayr, Péter Mayer , et al. · 2023

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …

CCDC 2216046: Experimental Crystal Structure Determination Open

Jonas Feldmann, Mads K. Skaanning, Marcus Lommel, Tobias Kernmayr, Péter Mayer , et al. · 2023

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …

CCDC 2217036: Experimental Crystal Structure Determination Open

Jonas Feldmann, Mads K. Skaanning, Marcus Lommel, Tobias Kernmayr, Péter Mayer , et al. · 2023

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …

CCDC 2216043: Experimental Crystal Structure Determination Open

Jonas Feldmann, Mads K. Skaanning, Marcus Lommel, Tobias Kernmayr, Péter Mayer , et al. · 2023

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …

CCDC 2216042: Experimental Crystal Structure Determination Open

Jonas Feldmann, Mads K. Skaanning, Marcus Lommel, Tobias Kernmayr, Péter Mayer , et al. · 2023

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …

CCDC 2193479: Experimental Crystal Structure Determination Open

Lena J. Daumann, Rachel Janßen, Violeta A. Vetsova, Dominik Putz, Péter Mayer · 2023

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …

CCDC 2154098: Experimental Crystal Structure Determination Open

Benjamin Lukas Regen-Pregizer, Ani Ozcelik, Péter Mayer, Frank Hampel, Henry Dube · 2023

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …

CCDC 2154100: Experimental Crystal Structure Determination Open

Benjamin Lukas Regen-Pregizer, Ani Ozcelik, Péter Mayer, Frank Hampel, Henry Dube · 2023

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …

A photochemical method to evidence directional molecular motions Open

Benjamin Lukas Regen-Pregizer, Ani Ozcelik, Péter Mayer, Frank Hampel, Henry Dube · 2023

A Novel Trinuclear Nickel(II) Salicylaldimine Complex: Synthesis, Structural Characterization, Bioactivity Profile against Bacterial, Fungal and Breast Cancer Cells and Effects on Wheat Germination Indices Open

Ereny S. Williem, Ahmed Amro, Ahmed B. M. Ibrahim, S. Abd Elkhalik, Péter Mayer , et al. · 2023

The complex [Ni3L6]•1.56CH2Cl2 (HL = (E)-2-(((3,4-dimethylphenyl)imino)methyl)phenol) was isolated in the monoclinic C 2/c space group. All nickel atoms are six-coordinate with a nickel atom bound to only O-phenol atoms, while the two term…

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