A new simple and efficient method to construct ring-fused 4-alkyl-4H-3,1-benzothiazine-2-thione derivatives has been developed from carbon disulfide and (E)-3-(2-aminoaryl)acrylates or (E)-3-(2-aminoaryl)acrylonitriles under mild conditions, without the need for a metal catalyst. The newly developed method tolerates a wide range of substrates in moderate to excellent yields. Moreover, this method is advantageous over previous ones for the easy synthesis of reactants.
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http://dx.doi.org/10.3762/bjoc.9.49 | DOI Listing |
Nano Lett
January 2025
School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, International Joint Laboratory of Low-carbon Chemical Engineering of Ministry of Education, Tianjin University, Tianjin 300072, P. R. China.
Molybdenum disulfide (MoS) is a promising anode for sodium-ion batteries (SIBs) due to its high theoretical capacity and layered structure. However, a poor reversible conversion reaction and a low initial Coulombic efficiency (ICE) limit its practical application. This study systematically investigated the potential of pre-intercalated sodium ions molybdenum disulfide (Na-MoS) as an anode material for SIBs.
View Article and Find Full Text PDFFront Pharmacol
January 2025
Department of Surgical Sciences, Functional Pharmacology and Neuroscience, Uppsala University, Uppsala, Sweden.
Background: Xanthones are dubbed as putative lead-like molecules for cancer drug design and discovery. This study was aimed at the synthesis, characterization, and target fishing of novel xanthone derivatives.
Methods: The products of reactions of xanthydrol with urea, thiourea, and thiosemicarbazide reacted with α-haloketones to prepare the thiazolone compounds.
Small
January 2025
Department of Physics, Malaviya National Institute of Technology Jaipur, Rajasthan, 302017, India.
Increasing attention to sustainability and cost-effectiveness in energy storage sector has catalyzed the rise of rechargeable Zinc-ion batteries (ZIBs). However, finding replacement for limited cycle-life Zn-anode is a major challenge. Molybdenum disulfide (MoS), an insertion-type 2D layered material, has shown promising characteristics as a ZIB anode.
View Article and Find Full Text PDFJ Hazard Mater
December 2024
Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650050, PR China; Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming 650500, PR China; Key Laboratory of Yunnan Province for Synthesizing Sulfur-containing Fine Chemicals, The Innovation Team for Volatile Organic Compounds Pollutants Control and Resource Utilization of Yunnan Province, The Higher Educational Key Laboratory for Odorous Volatile Organic Compounds Pollutants Control of Yunnan Province, Kunming 650500, PR China. Electronic address:
The catalytic degradation of malodorous sulfur-containing volatile organic compounds (S-VOCs), especially methanethiol (CHSH), faces an enormous challenge in striking a balance between activity and stability. Herein, we develop the time-tandem and spatial-extended strategy for synthesizing t-MoO/meso-SiO nano-reactor-type catalysts and reveal the migration and transformation behaviors of both carbon and sulfur species at the mesoscopic scale to break the catalytic CHSH activity and stability trade-off. The dynamic evolution of active centers from initial oxygen sites and acid sites to sulfur vacancies in MoS during the reaction process as well as the formation of a new dimethyl disulfide (CHSSCH) reaction pathway are identified as the main reason for the catalysts' superior activity and sulfur resistance.
View Article and Find Full Text PDFMolecules
December 2024
School of Biological and Chemical Engineering, Nanyang Institute of Technology, Nanyang 473004, China.
Nickel disulfide (NiS) nanoparticles are encapsulated within nitrogen and sulfur co-doped carbon nanosheets, which are grown onto carbon nanofibers to form an array structure (NiS/C@CNF), resulting in a self-supporting film. This encapsulated structure not only prevents the agglomeration of NiS nanoparticles, but also memorably buffers its volume changes during charge/discharge cycles, thereby maintaining structural integrity. The nitrogen and sulfur co-doping enhances electronic conductivity and facilitates the faster ion transport of the carbon backbone, improving the low conductivity of the NiS/C@CNF anodes.
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