Search Results - "Hioe, Johnny"

The stability of nitrogen-centered radicals by Hioe, Johnny, Šakić, Davor, Vrček, Valerije, Zipse, Hendrik

“…Radical stabilization energies (RSEs) for a wide variety of nitrogen-centered radicals and their protonated counterparts have been calculated at G3(MP2)-RAD…”
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Photoinitiated carbonyl-metathesis: deoxygenative reductive olefination of aromatic aldehydes via photoredox catalysis by Wang, Shun, Lokesh, Nanjundappa, Hioe, Johnny, Gschwind, Ruth M, König, Burkhard

“…Carbonyl-carbonyl olefination, known as McMurry reaction, represents a powerful strategy for the construction of olefins. However, catalytic variants that…”
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Improvement of the Solubilization and Extraction of Curcumin in an Edible Ternary Solvent Mixture by Huber, Verena, Muller, Laurie, Hioe, Johnny, Degot, Pierre, Touraud, Didier, Kunz, Werner

“…A water-free, ternary solvent mixture consisting of a natural deep eutectic solvent (NADES), ethanol, and triacetin was investigated concerning its ability to…”
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The Proline Enamine Formation Pathway Revisited in Dimethyl Sulfoxide: Rate Constants Determined via NMR by Haindl, Michael H, Hioe, Johnny, Gschwind, Ruth M

“…Enamine catalysis is a fundamental activation mode in organocatalysis and can be successfully combined with other catalytic methods, e.g., photocatalysis…”
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Brønsted acid catalysis - the effect of 3,3′-substituents on the structural space and the stabilization of imine/phosphoric acid complexes by Melikian, Maxime, Gramüller, Johannes, Hioe, Johnny, Greindl, Julian, Gschwind, Ruth M

“…BINOL derived chiral phosphoric acids (CPAs) are widely known for their high selectivity. Numerous 3,3′-substituents are used for a variety of stereoselective…”
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NMR Spectroscopic Characterization of Charge Assisted Strong Hydrogen Bonds in Brønsted Acid Catalysis by Sorgenfrei, Nils, Hioe, Johnny, Greindl, Julian, Rothermel, Kerstin, Morana, Fabio, Lokesh, N, Gschwind, Ruth M

“…Hydrogen bonding plays a crucial role in Brønsted acid catalysis. However, the hydrogen bond properties responsible for the activation of the substrate are…”
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Borane-Lewis Base Complexes as Homolytic Hydrogen Atom Donors by Hioe, Johnny, Karton, Amir, Martin, Jan M. L., Zipse, Hendrik

“…Radical stabilization energies (RSE)s have been calculated for a variety of boryl radicals complexed to Lewis bases at the G3(MP2)‐RAD level of theory. These…”
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Conformational Preferences in Small Peptide Models: The Relevance of cis/trans-Conformations by Jangra, Harish, Haindl, Michael H., Achrainer, Florian, Hioe, Johnny, Gschwind, Ruth M., Zipse, Hendrik

“…The accurate description of cis/trans peptide structures is of fundamental relevance for the field of protein modeling and protein structure determination. A…”
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Hydrogen Transfer in SAM-Mediated Enzymatic Radical Reactions by Hioe, Johnny, Zipse, Hendrik

“…S‐Adenosylmethionine (SAM) plays an essential role in a variety of enzyme‐mediated radical reactions. One‐electron reduction of SAM is currently believed to…”
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Uncovering the curcumin solubilization ability of selected natural deep eutectic solvents based on quaternary ammonium compounds by Huber, Verena, Hioe, Johnny, Touraud, Didier, Kunz, Werner

“…•Screening of curcumin solubility in nine natural deep eutectic solvents based on choline chloride, betaine, and carnitine.•COSMO-RS prediction of the chemical…”
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Decrypting Transition States by Light: Photoisomerization as a Mechanistic Tool in Brønsted Acid Catalysis by Renzi, Polyssena, Hioe, Johnny, Gschwind, Ruth M

“…Despite the wide applicability of enantioselective Brønsted acid catalysis, experimental insight into transition states is very rare, and most of the…”
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Chemical Exchange Saturation Transfer in Chemical Reactions: A Mechanistic Tool for NMR Detection and Characterization of Transient Intermediates by Lokesh, N, Seegerer, Andreas, Hioe, Johnny, Gschwind, Ruth M

“…The low sensitivity of NMR and transient key intermediates below detection limit are the central problems studying reaction mechanisms by NMR. Sensitivity can…”
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Brønsted Acid CatalysisStructural Preferences and Mobility in Imine/Phosphoric Acid Complexes by Greindl, Julian, Hioe, Johnny, Sorgenfrei, Nils, Morana, Fabio, Gschwind, Ruth M

“…Despite the huge success of enantioselective Brønsted acid catalysis, experimental data about structures and activation modes of substrate/catalyst complexes…”
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Disulfonimides versus Phosphoric Acids in Brønsted Acid Catalysis: The Effect of Weak Hydrogen Bonds and Multiple Acceptors on Complex Structures and Reactivity by Rothermel, Kerstin, Žabka, Matej, Hioe, Johnny, Gschwind, Ruth M

“…In Brønsted acid catalysis, hydrogen bonds play a crucial role for reactivity and selectivity. However, the contribution of weak hydrogen bonds or multiple…”
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Photocatalytic Phenol–Arene C–C and C–O Cross‐Dehydrogenative Coupling by Eisenhofer, Anna, Hioe, Johnny, Gschwind, Ruth M., König, Burkhard

“…Phenol‐containing nonsymmetrical biaryls play an important role in natural‐product synthesis, as ligands in metal catalysis, and in organic functional…”
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Relaxation Dispersion NMR to Reveal Fast Dynamics in Brønsted Acid Catalysis: Influence of Sterics and H‑Bond Strength on Conformations and Substrate Hopping by Lokesh, N, Hioe, Johnny, Gramüller, Johannes, Gschwind, Ruth M

“…NMR provides both structural and dynamic information, which is key to connecting intermediates and to understanding reaction pathways. However, fast exchanging…”
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Enamine/Dienamine and Brønsted Acid Catalysis: Elusive Intermediates, Reaction Mechanisms, and Stereoinduction Modes Based on in Situ NMR Spectroscopy and Computational Studies by Renzi, Polyssena, Hioe, Johnny, Gschwind, Ruth M

“…Conspectus Over the years, the field of enantioselective organocatalysis has seen unparalleled growth in the development of novel synthetic applications with…”
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The Stability of Cα Peptide Radicals: Why Glycyl Radical Enzymes? by Hioe, Johnny, Savasci, Gökcen, Brand, Harald, Zipse, Hendrik

“…The conformational space of dipeptide models derived from glycine, alanine, phenylalanine, proline, tyrosine, and cysteine has been searched extensively and…”
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Internal acidity scale and reactivity evaluation of chiral phosphoric acids with different 3,3′-substituents in Brønsted acid catalysis by Rothermel, Kerstin, Melikian, Maxime, Hioe, Johnny, Greindl, Julian, Gramüller, Johannes, abka, Matej, Sorgenfrei, Nils, Hausler, Thomas, Morana, Fabio, Gschwind, Ruth M

“…The concept of hydrogen bonding for enhancing substrate binding and controlling selectivity and reactivity is central in catalysis. However, the properties of…”
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Brønsted acid catalysis – the effect of 3,3′-substituents on the structural space and the stabilization of imine/phosphoric acid complexes† †Electronic supplementary information (ESI) available. See DOI: 10.1039/c9sc01044k by Melikian, Maxime, Gramüller, Johannes, Hioe, Johnny, Greindl, Julian, Gschwind, Ruth M.

“…Advanced NMR and theoretical studies reveal detailed insights into monomeric and dimeric structures plus deviating experimental and theoretical E / Z…”
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