Results 1 to 10 of about 827 (98)

Cupin‐Type Dimethylsulfoniopropionate Lyase from Pelagibacter ubique (DddKPu) Catalyzes Aza‐Michael Addition of Primary and Secondary Amines to Acrylic Acid [PDF]

open access: yesAngewandte Chemie, Volume 137, Issue 45, November 3, 2025.
A dimethylsulfoniopropionate lyase (DddK) was identified as an efficient aza‐Michaelase for the addition of amines to acrylate. Screening 74 amines with wild‐type DddK and its W26G variant yielded N‐substituted and N,N‐disubstituted β‐amino acids in 30%–93% isolated yield.
Diletta Arceri   +5 more
wiley   +3 more sources

Mechanistic Insights and Catalytic Efficiency of a 2,2′‐Bipyridine–Coordinated Peroxidovanadium Complex as a Haloperoxidase Biomimetic [PDF]

open access: yesChemPlusChem, Volume 90, Issue 11, November 10, 2025.
A peroxidovanadium(V) complex mimics vanadium haloperoxidases for eco‐friendly halogenation of organic substrates. Density functional theory studies reveal two major reaction pathways for iodide/bromide oxidation. The catalyst offers high‐yield bromination/iodination of 8‐hydroxyquinoline (73/86%) under mild conditions (30 °C, pH 5.8), and it also ...
Lucas G. Fachini   +6 more
wiley   +2 more sources

Continuous‐Wave (CW) Photo‐CIDNP NMR Spectroscopy: A Tutorial [PDF]

open access: yesMagnetic Resonance in Chemistry, Volume 63, Issue 12, Page 1020-1034, December 2025.
ABSTRACT Photo‐chemically induced dynamic nuclear polarisation (photo‐CIDNP) is a nuclear spin‐selective magnetic resonance phenomenon that has traditionally been used to mechanistically study chemical reactions involving the (transient) formation of radical molecular species, extract EPR observables of short‐lived radicals, probe biomolecular ...
Lars T. Kuhn, Míriam Pérez‐Trujillo
wiley   +2 more sources

A utilização da ressonância magnética nuclear em Odontologia: revisão de literatura e relato de caso

open access: yesRevista da Faculdade de Odontologia de Porto Alegre, 2020
Os autores revisam a literatura sobre a utilização da ressonância magnética nuclear em odontologia, seu estágio atual e suas perspectivas futuras, apresentando um caso clínico.
Vinícius D. Dutra   +2 more
doaj   +9 more sources

Structure-Function Relationship of the Disintegrin Family: Sequence Signature and Integrin Interaction

open access: yesFrontiers in Molecular Biosciences, 2021
Disintegrins are small cysteine-rich proteins found in a variety of snake venom. These proteins selectively modulate integrin function, heterodimeric receptors involved in cell-cell and cell-matrix interaction that are widely studied as therapeutic ...
Ariana A. Vasconcelos   +7 more
doaj   +1 more source

Unravelling the Mechanistic Pathway of the Hydrogen Evolution Reaction Driven by a Cobalt Catalyst

open access: yesAngewandte Chemie, Volume 134, Issue 40, October 4, 2022., 2022
A CoI complex bearing a redox‐active κ‐N3P2 pentadentate ligand and its activity towards hydrogen evolution reaction is reported in this work. A combination of spectroscopic, electrochemical and computational techniques is employed to characterize the intermediate species, demonstrating an unusual homolytic coupling reaction pathway between two ...
Bing Jiang   +10 more
wiley   +2 more sources

(Bio)Functionalisation of Metal–Organic Polyhedra by Using Click Chemistry

open access: yesChemistry – A European Journal, Volume 29, Issue 60, October 26, 2023., 2023
Copper(I)‐catalysed alkyne‐azide cycloaddition click chemistry is a versatile post‐synthetic tool to functionalize the surface chemistry of alkyne‐functionalized cuboctahedral Metal–Organic Polyhedra (MOPs). This methodology enables quantitative functionalization of MOPs with a wide range of functional groups, including polymers, carboxylic and ...
Laura Hernández‐López   +8 more
wiley   +1 more source

Synthese von C60/[10]CPP‐Catenanen durch Regioselektive Nanokapsel‐Templierte Bingel Bis‐Addition

open access: yesAngewandte Chemie, Volume 135, Issue 42, October 16, 2023., 2023
Die Kombination von drei Methoden (Tether, Nanohoop‐Template und supramolekulare Schattenmaske) ermöglichte die itero‐ und regioselektive Synthese von [2]Catenanen durch Bis‐Addition von Bis‐Bromomalonaten an den Komplex C60⸦[10]CPP. Die Verwendung einer „spurlosen“ Nanokapsel‐Schattenmaske war der Schlüssel für eine 87 %ige Selektivität für das „in ...
Fabian M. Steudel   +7 more
wiley   +1 more source

Synthesis of C60/[10]CPP‐Catenanes by Regioselective, Nanocapsule‐Templated Bingel Bis‐Addition

open access: yesAngewandte Chemie International Edition, Volume 62, Issue 42, October 16, 2023., 2023
The combination of three approaches (tether, nanohoop template & supramolecular shadow mask) enabled the itero‐ and regioselective synthesis of [2]catenanes via bis‐addition of bis‐bromomalonates to the complex C60⸦[10]CPP. The use of a “traceless” nanocapsule shadow mask was key for obtaining 87 % selectivity for the “in,out‐trans‐3′′ product, where ...
Fabian M. Steudel   +7 more
wiley   +1 more source

A Polymeric Nanoparticle Formulation for Targeted mRNA Delivery to Fibroblasts

open access: yesAdvanced Science, Volume 10, Issue 5, February 14, 2023., 2023
Messenger RNA (mRNA) is a promising tool to deliver therapeutic proteins in many diseases, including fibrotic disorders. Here, a polymeric nanoparticle formulation is developed after high‐throughput screening of 152 polymers in a fibroblast model.
Artur Filipe Rodrigues   +6 more
wiley   +1 more source

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