Results 11 to 20 of about 974 (165)
Update on chiral recognition mechanisms in separation science. [PDF]
J Sep SciThe stereospecific analysis of chiral molecules is an important issue in many scientific fields. In separation sciences, this is achieved via the formation of transient diastereomeric complexes between a chiral selector and the selectand enantiomers driven by molecular interactions including electrostatic, ion‐dipole, dipole‐dipole, van der Waals or π ...
Scriba GKE.
europepmc +2 more sources
Dual Role of Silicon‐based Matrices in Electron Exchange Matrices for Waste Treatment
ChemPhysChem, Volume 24, Issue 18, September 15, 2023., 2023 A heterogeneous advanced oxidation process (AOP) that proceeds in a silica‐based electron exchange matrix (EEM) is utilized to remove para chloro aniline from pharmaceutical wastewater. Density functional calculations show that the silicon skeleton of the EEM has two important roles (1) acts as a porous matrix that hosts the redox species (2) acts as ...
Noy Cohen +4 more
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Journal of Separation Science, Volume 46, Issue 18, September 2023., 2023 Within this review, we thoroughly explored supercritical fluid chromatography (SFC) columns used across > 3000 papers published from the first study carried out under SFC conditions in 1962 to the end of 2022. We focused on the open tubular capillary, packed capillary, and packed columns, their chemistries, dimensions, and trends in used stationary ...
Kateřina Plachká +6 more
wiley +1 more source
Selective Synthesis of Monofluorinated Compounds Applying Amine/HF Reagents
The Chemical Record, Volume 23, Issue 9, September 2023., 2023 Amine/HF reagents such as Et3N ⋅ 3HF and Pyr ⋅ 9HF (Olah's reagent) belong to the most frequently used fluoride sources for monofluorination, whereupon their selectivity can be very different due to its acidity, the nucleophilicity of the fluoride equivalent, and the structure of the substrate.
Günter Haufe
wiley +1 more source
Ferrocene derivatives with planar chirality and their enantioseparation by liquid‐phase techniques
ELECTROPHORESIS, Volume 44, Issue 1-2, Page 158-189, January 2023., 2023 Abstract In the last decade, planar chiral ferrocenes have attracted a growing interest in several fields, particularly in asymmetric catalysis, medicinal chemistry, chiroptical spectroscopy and electrochemistry. In this frame, the access to pure or enriched enantiomers of planar chiral ferrocenes has become essential, relying on the availability of ...
Paola Peluso, Victor Mamane
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Chirality, Volume 34, Issue 7, Page 925-940, July 2022., 2022 The chiral recognition ability and durability toward to polar organic solvents regarding four recently developed immobilized chiral stationary phases based on amylose tris(3‐chloro‐5‐methylphenylcarbamate), cellulose tris(3‐chloro‐5‐methylphenylcarbamate), amylose tris[(S)‐phenylethylcarbamate], and cellulose tris(4‐methylbenzoate) was investigated and
Takafumi Onishi +6 more
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A Receptor Interaction Model for Phenylcarbamate Local Anesthetics
Zeitschrift für Naturforschung C, 1995 Abstract We report here a molecular modeling study of selected conformationally constrained phenylcarbamate local anesthetics in relation to the available pharmacological data that enabled us to develop a receptor-interaction model for this class of drugs. The validity of the model was confirmed on other semirigid analogues prepared for
V, Kettmann, J, Sivý
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Metabolism of ‘Propham’ (Isopropyl N-phenylcarbamate) in the Rat [PDF]
Nature, 1968 SEVERAL N-phenylcarbamates are currently used as selective pre and postemergent herbicides to control weeds in agronomic crops. Much is known of the fate of the N-phenylcarbamates in soils where micro-organisms play an important part in their decomposition1,2, and their metabolism has also been studied in plants3–5.
G M, Holder, A J, Ryan
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Angewandte Chemie, Volume 137, Issue 5, January 27, 2025.A novel, sustainable, and scalable method for the efficient depolymerization of polyurethane foam waste is presented, employing ionic liquids and superbase catalysis as reaction media at 95–98 °C, and highlighting the potential for industrial application of the resulting polyol.
Rocio Villa +6 more
wiley +2 more sources