Results 101 to 110 of about 1,033 (244)

Catalisadores para esterificação e transesterificação e modificações de eletrodos de pasta de carbono para detecção de fosfatos baseados na técnica de molecular imprinting [PDF]

, 2014
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Programa de Pós-Graduação em Química, Florianópolis, 2014.Esta tese objetivou o desenvolvimento de catalisadores para as reações de esterificação e ...
Quint, Marcelo Luiz
core  

Molecularly Engineered 2D Xene Heterostructures With Implanted Peroxidase‐Like Activity for Mimicking Enzyme Functions

Small Methods, EarlyView.
A modular electropolymerization strategy is used to covalently graft a vinyl‐terminated Co(II) molecular catalyst onto allyl 2D germanane. This molecular programming approach yields a 2D Xene nanozyme with implanted peroxidase‐like activity, enabling sensitive and selective electrochemical detection of hydrogen peroxide and the monitoring of ...
Yiming Lei, Xavier Sala, Jordi García‐Antón, Jose Muñoz   +3 more
wiley   +1 more source

Complex Chemistry of a Chiral Terpyridine Ligand Based on (1R)‐(+)‐Camphor

Zeitschrift für anorganische und allgemeine Chemie, EarlyView.
From (1R)‐(+)‐camphor, a chiral terpyridine ligand is accessible in a few steps that coordinates to divalent metal ions of the first and second transition metal row. From structural characterization, the steric repulsion of the two equatorial methyl groups of the tetrahydromethanoquinoline units becomes evident, which causes cyclometalation of the ...
Julia Ehrhard, Marc H. Prosenc, Werner R. Thiel   +2 more
wiley   +1 more source

Covalent drug discovery: Progress against key targets, emerging strategies and lessons learnt

British Journal of Pharmacology, EarlyView.
Abstract Covalent drug discovery is currently experiencing a boom in industrial and academic interest. To date, at least 75 covalent drugs have received regulatory approval, targeting both traditional target classes and more challenging proteins for which other approaches failed. In many cases, unique aspects of covalent targeting are essential for the
Charles P. Brown, Alan Armstrong, David J. Mann   +2 more
wiley   +1 more source

Serine Octamer Substitution Reactions With α‐Hydroxy Acids

Rapid Communications in Mass Spectrometry, Volume 40, Issue 18, 30 September 2026.
ABSTRACT Rationale The amino acid serine forms chiral magic number clusters, which can be studied using mass spectrometry (MS). Serine octamer clusters are also known to incorporate one or two nonserine monomers with serine monomers to make up the octamer.
Keerthana Unni, Brison A. Shira, Dylan T. Holden, Thalappil Pradeep, R. Graham Cooks   +4 more
wiley   +1 more source

Enzymatic Catalysis of Biodiesel—A Critical Perspective

WIREs Energy and Environment, Volume 15, Issue 3, September 2026.
This figure illustrates the main advantages and drawbacks of enzymatic biodiesel production, highlighting its potential as a sustainable alternative to chemical routes and noting economic and technical barriers that must be addressed to enable large‐scale adoption in the global energy transition. ABSTRACT Biodiesel, a renewable alternative to petroleum
Jéssica Beatriz R. A. Miranda, Jackson Milano, Maura H. Sugai‐Guerios   +2 more
wiley   +1 more source

Barbituric Acids as Nucleophiles in Enantioselective Mannich Reactions: Organocatalytic Access to Quaternary Aminopyrazolone–Barbiturate Adducts

Advanced Synthesis &Catalysis, Volume 368, Issue 15, 1 August 2026.
An enantioselective Mannich reaction using barbituric acids as nucleophiles provides access to chiral heterocycles bearing quaternary stereocenters. The transformation is catalyzed by a bifunctional thiourea with high selectivity. An immobilized catalyst enables recycling and application under continuous‐flow conditions, offering an efficient and ...
Rodrigo Sánchez‐Molpeceres, Mónica Llorente‐Pérez, Laura Martín, Alicia Maestro, José M. Andrés   +4 more
wiley   +1 more source

Biocatalytic Application of Goodfellowiella coeruleoviolacea Imine Reductase: Enantioselective Synthesis of Cyclic Secondary Amines in Deep Eutectic Solvent‐Based Media

Advanced Synthesis &Catalysis, Volume 368, Issue 15, 1 August 2026.
A Goodfellowiella coeruleoviolacea Imine Reductase is here reported as a novel enzyme for biocatalytic application in chiral amine synthesis. Deep eutectic solvents have been used to increase substrate loadings, up to 150 mM, and boost enzymatic activity. Reaction scope and scale‐up procedure showcased the protocol applicability.
Federica De Nardi, Alessandro Marchetto, Nicoletta Schiavo, Francesca Spyrakis, Francesca Paradisi, Cristina Prandi   +5 more
wiley   +1 more source

Synergistic Mechanism Between Ir–Phosphinito Catalyst and HFIP Enables Asymmetric Hydrogenation of Ketones Under Acidic Conditions

Advanced Synthesis &Catalysis, Volume 368, Issue 15, 1 August 2026.
A cooperative mechanism between a phosphinito Ir complex and HFIP provides a low‐energy pathway for hydrogen activation. This allowed the development of a highly efficient catalytic system for the hydrogenation of ketones that operates under acidic conditions, enabling the reduction of substrates containing phenols and carboxylic acids with no added ...
Martí Sidro, Agustí Lledós, María Vicent‐Morales, Jordi Benet‐Buchholz, Giuseppe Sciortino, Antoni Riera, Xavier Verdaguer   +6 more
wiley   +1 more source

Green Chiral HPLC Method for Lumefantrine Analysis: Method Development, Greenness Assessment, and Computational Studies

Chirality, Volume 38, Issue 8, August 2026.
A green chiral HPLC method was developed and validated for the determination of lumefantrine enantiomers. The method employs ethanol as a mobile phase as a sustainable and efficient alternative to hexane. The chiral recognition mechanism and elution order of the enantiomers were investigated using electronic circular dichroism and molecular docking ...
Amanda Mohr, Gustavo Machado das Neves, Érika Segala, Vera Lucia Eifler‐Lima, Martin Steppe   +4 more
wiley   +1 more source