Results 41 to 50 of about 588 (171)
Chemistry – A European Journal, EarlyView.Recent theoretical efforts to elucidate the origin of enantioselectivity in transition metal‐catalyzed propargylic substitution reactions are highlighted in this review. ABSTRACT In recent years, asymmetric catalytic propargylic substitution reactions have undergone remarkable development, enabling the construction of chiral carbon centers adjacent to ...
Ken Sakata, Yoshiaki Nishibayashi
wiley +1 more source
ChemSusChem, Volume 18, Issue 6, March 15, 2025.Novel organic solvents with an unmodified carbohydrate core were synthesised both from D‐xylose and directly from biomass and were successfully used as reaction media for lipase biocatalysts to synthesise aliphatic and aromatic polyesters. Abstract The use of organic solvents in academic research and industry applications is facing increasing ...
Anastasia O. Komarova +8 more
wiley +1 more source
Nucleophilic substitution reactions utilizing hexamethylphosphoric triamide (HMPT) I. Aromatic nucleophilic substitution reactions in HMPT II. Aliphatic nucleophilic substitution reactions in HMPT [PDF]
, 1972 Part I. Aromatic nucleophilic substitution has been found to occur with aryl halides which are activated by benzoyl or cyano groups when subjected to refluxing hexamethylphosphoric triamide (I), resulting in substitution of a dimethylamino group for the ...
Priest, Deggary N.
core +1 more source
The effect of inorganic anions on the adsorption of perfluoroalkyl acids to various polymeric anion exchange resins [PDF]
Anion exchange resins (AERs) are promising adsorbents for removing perfluoroalkyl acids (PFAAs). However, little is known about competitive effects of specific co-solutes at typical drinking water concentrations.
Hale, Sarah E. +4 more
core +2 more sources
TENDÊNCIAS DA SÍNTESE DA ZEÓLITA MORDENITA COM O USO DE SEMENTES DE CRISTALIZAÇÃO [PDF]
, 2015 Devido a sua alta estabilidade térmica e acidez, a zeólita mordenita é utilizada como adsorvente na separação de gases ou misturas líquidas, e como catalisador nos processos de hidrocraqueamento, hidroisomerização, alquilação, reforma catalítica ...
Alencar, Soraya Lira +8 more
core +2 more sources
European Journal of Organic Chemistry, EarlyView.The work outlined herein covers a series of novel herbicidal lead structures that possess a pyrrolidinyl pyrazole carboxamide scaffold as a key structural feature, carrying further substituted benzyl side chains. Based on scaffold hopping approaches from known fungicidal and herbicidal compounds and utilizing an optimized synthetic approach, a broader ...
Elisabeth Asmus +24 more
wiley +1 more source
FlexMat, EarlyView.HTL‐free carbon‐based PSCs are promising in stability but limited by efficiency. Systematic screening identifies DMAFo as an optimized ionic‐liquid additive: the DMA+ regulates lattice distortion and relieves residual stress, while Fo‒ passivates halide vacancies, and ameliorates band‐alignment.
Zhiyang Ju +10 more
wiley +1 more source
Leveraging Diamines to Unlock the Mn‐MACHO Catalyst in the Reduction of CO2 to Methanol
Angewandte Chemie, Volume 138, Issue 10, 2 March 2026.CO2 hydrogenation to methanol using a Mn–MACHO catalyst was achieved without Lewis acid promoters, delivering TONs up to 45.2. Diamines, by driving a highly exergonic double amidation reaction, divert formate resting states toward the active catalyst. The correlation between ΔGamidation and methanol productivity enables the rational design of the amine
Mohamed E. A. Safy +6 more
wiley +2 more sources
Harnessing Free Radical Scavenging Potential of Caffeic Acid as a Nutraceutical—A Review
Food Safety and Health, EarlyView.Caffeic acid has emerged as a promising bioactive molecule with multiple pharmacological properties, including antioxidant, antimicrobial, anti‐inflammatory, organ protective properties and metal‐chelating ability. This review emphasizes the dietary sources, structural characteristic, molecular mechanism underlying health promoting effects of caffeic ...
Pavitra Behra +2 more
wiley +1 more source
Optimization of Diffusion MRI With Consideration of the Signal Decay in Biological Tissues
Magnetic Resonance in Medicine, EarlyView.ABSTRACT Purpose Devising methodology to characterize and optimize acquisition schemes for biological tissues, such as the prostate, that produce model‐based synthetic diffusion‐weighted images and derived model parameters with predictable SNR improvement. Methods The averaging effect (AE) in synthetic diffusion‐weighted images obtained through fitting
Stefan Kuczera, Stephan E. Maier
wiley +1 more source