In this study, we report a facile synthesis of 2-chloro-1,3-bis(2,6-diisopropylphenyl)imidazolium salts in aqueous media under ambient conditions using hypochlorite as a chlorinating agent. In addition, an air-stable and moisture-insensitive deoxyfluorination reagent based on poly[hydrogen fluoride] salt is presented, which is capable of converting electron-deficient phenols or aryl silyl ethers into the corresponding aryl fluorides in the presence of DBU as a base, with good to excellent yields and high tolerance to functional groups.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10226106 | PMC |
| http://dx.doi.org/10.1021/acs.orglett.3c01018 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Modified Imidazole-Phenol-Based ESIPT Fluorophores as Self-Absorption Free Emitters for Efficient Electroluminescent Devices.
Chem Asian J
December 2024
Vidyasirimedhi Institute of Science and Technology, Frontier research center, THAILAND.
Excited-state intramolecular proton transfer (ESIPT) molecules are promising fluorophores for various applications. Particularly, their self-absorption-free fluorescence properties would make them a perfect choice as emissive materials for organic light-emitting diodes (OLEDs). Nevertheless, to become effective emitters some of their properties need to be altered by structural modifications.
View Article and Find Full Text PDF1-Butyl-3-methylimidazolium-Based Ionic Liquid in Biomass Fractionation-Green Solvent or Active Reagent Toward Lignin Compounds?
Int J Mol Sci
November 2024
Core Facility Center 'Arktika', Northern (Arctic) Federal University, Arkhangelsk 163002, Russia.
N,N'-Dialkylimidazolium-based ionic liquids are capable of completely dissolving lignocellulosic biomass at elevated temperatures and are considered as promising green solvents for future biorefining technologies. However, the obtained ionic liquid lignin preparations may contain up to several percent nitrogen. This indicates strong interactions between the biopolymer and the IL cation, the nature of which has not yet been clarified.
View Article and Find Full Text PDFTriflyl [F]Fluoride as a Solution for Base-Sensitive Late-Stage Nucleophilic Aromatic F-Fluorination Reactions.
Chemistry
November 2024
Deparment of Radiology & Nuclear Medicine, Amsterdam UMC, location Vrije Universiteit Amsterdam, De Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands.
Fluorine-18 is the predominant radionuclide used to label Positron Emission Tomography (PET) tracers. One outstanding challenge in nucleophilic aromatic radiofluorination reactions is the sensitivity of precursors and catalysts for basic reaction conditions, which are necessary for the work-up of [F]fluoride, resulting in limited reproducibility. Triflyl [F]fluoride is a new [F]fluoride source that allows freedom in choice of type and amounts of base and cryptand.
View Article and Find Full Text PDFRegulating the Electronic Structure of Cu Single-Atom Catalysts toward Enhanced Electro-Fenton Degradation of Organic Contaminants via O and OH.
Environ Sci Technol
October 2024
Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China.
Heterogeneous electro-Fenton degradation with O and OH generated from O reduction is cost-effective for the removal of refractory organic pollutants from wastewater. As O is more tolerant to background constituents such as salt ions and a high pH value than OH, tuning the production of O and OH is important for efficient electro-Fenton degradation. However, it remains a great challenge to selectively produce O and improve the species yield.
View Article and Find Full Text PDFOverlooked Complexation and Competition Effects of Phenolic Contaminants in a Mn(II)/Nitrilotriacetic Acid/Peroxymonosulfate System: Inhibited Generation of Primary and Secondary High-Valent Manganese Species.
Environ Sci Technol
October 2024
School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia.
Organic contaminants with lower Hammett constants are typically more prone to being attacked by reactive oxygen species (ROS) in advanced oxidation processes (AOPs). However, the interactions of an organic contaminant with catalytic centers and participating ROS are complex and lack an in-depth understanding. In this work, we observed an abnormal phenomenon in AOPs that the degradation of electron-rich phenolics, such as 4-methoxyphenol, acetaminophen, and 4-presol, was unexpectedly slower than electron-deficient phenolics in a Mn(II)/nitrilotriacetic acid/peroxymonosulfate (Mn(II)/NTA/PMS) system.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!