Selective C-F bond activation through a radical pathway in the presence of multiple C-H bonds remains a formidable challenge, owing to the extraordinarily strong bond strength of the C-F bond. By the aid of density functional theory calculations, we disclose an innovative concerted electron-fluoride transfer mechanism, harnessing the unique reactivity of Lewis base-boryl radicals to selectively activate the resilient C-F bonds in fluoroalkanes. This enables the direct abstraction of a fluorine atom and subsequent generation of an alkyl radical, thus expanding the boundaries of halogen atom transfer reactions.
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http://dx.doi.org/10.1002/anie.202415715 | DOI Listing |
Narra J
December 2024
Department of Biology, Faculty of Science and Technology, Universitas Islam Negeri Maulana Malik Ibrahim, Malang, Indonesia.
is an alga with high fucoxanthin, phlorotannin, fucoidan, sterol, and astaxanthin. The silver nanoparticles of (AgNPs-Fv) are expected to have high antioxidant, anti-collagenase, and antibacterial activities. The aim of this study was to characterize the distribution and size of AgNPs-Fv and determine their antioxidant, anti-collagenase, and antibacterial activities.
View Article and Find Full Text PDFDalton Trans
January 2025
Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica, Facultad de Química, and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Consejo Superior de Investigaciones Científicas (CSIC) and Universidad de Sevilla, 41092 Sevilla, Spain.
Redox-active ligands provide alternative reaction pathways by facilitating redox events. Among these, tridentate bis(piridylimino)isoindole (BPI) fragments offer great potential, though their redox-active behaviour remains largely underdeveloped. We describe herein a family of BPI germanium(II) complexes and the study of their redox properties.
View Article and Find Full Text PDFNat Rev Nephrol
January 2025
APHP, Reference Center for Rare Diseases of Calcium and Phosphate Metabolism, and Filière OSCAR, endo ERN and ERN BOND, Paris, France.
X-linked hypophosphataemia (XLH) is a rare metabolic bone disorder caused by pathogenic variants in the PHEX gene, which is predominantly expressed in osteoblasts, osteocytes and odontoblasts. XLH is characterized by increased synthesis of the bone-derived phosphaturic hormone fibroblast growth factor 23 (FGF23), which results in renal phosphate wasting with consecutive hypophosphataemia, rickets, osteomalacia, disproportionate short stature, oral manifestations, pseudofractures, craniosynostosis, enthesopathies and osteoarthritis. Patients with XLH should be provided with multidisciplinary care organized by a metabolic bone expert.
View Article and Find Full Text PDFNat Commun
January 2025
Faculty of Materials Science and Engineering, Kunming University of Science and Technology, 650093, Kunming, PR China.
Regulating carbon hybridization states lies at the heart of engineering carbon materials with tailored properties but orchestrating the sequential transition across three states has remained elusive. Here, we visiualize stepwise evolution in carbon hybridizations from sp³ to sp² and to sp states via dehydrogenation and elimination reactions of methylcyano-functionalized molecules on surfaces. Utilizing scanning probing microscopy, we distinguish three distinct carbon-carbon bond types within polymers induced by annealing at elevated temperatures.
View Article and Find Full Text PDFBiomacromolecules
January 2025
Departamento de Química, Federal University of Santa Catarina, Roberto Sampaio Gonzaga Street, 88040-380 Florianópolis, Brazil.
Polyamide (PA) has notable physical and chemical properties and is one of the most versatile synthetic materials in the industrial sector. However, its hydrophobicity creates significant challenges in its beneficiation and modification. Modifications of PA with chitosan nanoparticles (CNPs) can improve its undesired properties but are rarely found in the literature due to the weak interaction between the chemical groups of both structures.
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