A color-indicator based on a derivative of rhodamine amide was developed for the detection of radical intermediates in organic reactions. This derivative showed sensitive color changes for various radical intermediates initiated by chemical reagents or UV light.
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New insight into enhanced permanganate oxidation by lignocellulose-derived biochar: The overlooked role of persistent free radicals.
Water Res
December 2024
The Ministry of Education Key Laboratory of Northwest Water Resource, Environment and Ecology, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China. Electronic address:
Permanganate (Mn(VII)) is a traditional reagent used for water purification, but it is mild to deal with refractory organic contaminants of emerging concern. There is great interest in combination with effective and low-cost biochar to improve reaction kinetics of Mn(VII). Until recently, it still unclear how biomass composition and carbon structure of biochar influence the Mn(VII) oxidation performance.
View Article and Find Full Text PDFNegative PSMA PET can be used to avoid unnecessary pelvic lymph node dissection in intermediate risk prostate cancer.
Prostate Cancer Prostatic Dis
January 2025
Martini-Klinik Prostate Cancer Center, University Hospital Hamburg Eppendorf, Hamburg, Germany.
Background: Prostate-specific membrane antigen (PSMA) positron emission tomography (PET) has a high negative predictive value (NPV) in determining lymph node invasion (LNI) in men with intermediate-risk disease undergoing radical prostatectomy (RP) and pelvic lymph node dissection (PLND). We hypothesized that PSMA PET may be used to reduce the number of unnecessary PLND procedures performed.
Objective: To assess BCR-free survival of intermediate risk prostate cancer patients with a negative PSMA PET who underwent PLND vs.
Degradation of ciprofloxacin using CoFeO@three-dimensional TiO@graphene aerogels composite: kinetic, reusability, mineralization, degradation pathway, and toxicity assessment.
Environ Sci Pollut Res Int
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Department of Environmental Health, Health Promotion Research Center, Zahedan University of Medical Sciences, Zahedan, Iran.
Article Synopsis
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Diverse reactivity of a cationic N-heterocyclic phosphenium complex towards anionic substrates - substitution reduction.
Dalton Trans
January 2025
Institut für Anorganische Chemie, University of Stuttgart, Pfaffenwaldring 55, 70550 Stuttgart, Germany.
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- A cationic N-heterocyclic phosphenium iron tetracarbonyl complex was synthesized and its reactivity with various anionic reactants was investigated, resulting in different products depending on the anion involved.
- Reactions with fluoride and chloride produced neutral diazaphospholenes, while bromide and iodide led to NHP iron halides through metal addition and decarbonylation.
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Iron-Catalyzed Aerobic Carbonylation of Methane via Ligand-to-Metal Charge Transfer Excitation.
J Am Chem Soc
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State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Shanghai 200032, China.
The integration of ligand-to-metal charge transfer (LMCT) catalytic paradigms with radical intermediates has transformed the selective functionalization of inert C-H bonds, facilitating the use of nonprecious metal catalysts in demanding transformations. Notably, aerobic C-H carbonylation of methane to acetic acid remains formidable due to the rapid oxidation of methyl radicals, producing undesired C1 oxygenates. We present an iron terpyridine catalyst utilizing LMCT to achieve exceptional C2/C1 selectivity through synergistic photoexcitation, methyl radical generation, and carbonylation.
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