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Functional connectivity and metabolic brain alterations in sleepwalkers.
Eur J Neurol
February 2025
Department of Biomedical and NeuroMotor Sciences, University of Bologna, Bologna, Italy.
Objective: Disorders of arousal (DoA) are characterized by an intermediate state between wakefulness and deep sleep, leading to incomplete awakenings from NREM sleep. Multimodal studies have shown subtle neurophysiologic alterations even during wakefulness in DoA. The aim of this study was to explore the brain functional connectivity in DoA and the metabolic profile of the anterior and posterior cingulate cortex, given its pivotal role in cognitive and emotional processing.
View Article and Find Full Text PDFNanosized MCM-41 silica from rice husk and its application for the removal of organic dyes from water.
RSC Adv
January 2025
Dipartimento di Scienze e Innovazione Tecnologica, Università Del Piemonte Orientale A. Avogadro Viale T. Michel 11 15121 Alessandria Italy
A novel synthesis of a nanometric MCM-41 from biogenic silica obtained from rice husk is here presented. CTABr and Pluronic F127 surfactants were employed as templating agents to promote the formation of a long-range ordered 2D-hexagonal structure with cylindrical pores and to limit the particle growth at the nanoscale level thus resulting in a material with uniform particle size of 20-30 nm. The physico-chemical properties of this sample (RH-nanoMCM) were investigated through a multi-technique approach, including PXRD, Si MAS NMR, TEM, -potential and N physisorption analysis at 77 K.
View Article and Find Full Text PDFNovel D-Ribofuranosyl Tetrazoles: Synthesis, Characterization, In Vitro Antimicrobial Activity, and Computational Studies.
ACS Omega
January 2025
Applied Chemistry and Environment Laboratory, Applied Bioorganic Chemistry Team, Faculty of Science, Ibn Zohr University, Agadir 80000, Morocco.
The goal of this study was to synthesize and evaluate new antimicrobial compounds. We specifically focused on the development of 2,5-disubstituted tetrazole derivatives containing the O-methyl-2,3-O-isopropylidene-(D)-ribofuranoside groups through N-alkylation reactions. The synthesized compounds were characterized using H and C nuclear magnetic resonance (NMR) spectroscopy.
View Article and Find Full Text PDFNovel Catalyst-Free Synthesis of Some 3-Alkylaminoquinoxaline-2(1)-thiones and 3-Alkyloxyquinoxaline-2(1)-thiones in Ethanol.
ACS Omega
January 2025
School of Chemistry, University of Southampton, Southampton SO17 1BJ, United Kingdom.
Seventeen 3-alkylaminoquinoxaline-2(1)-thiones and 3-alkyloxyquinoxaline-2(1)-thiones were prepared by a novel thionation protocol from the readily available quinoxaline-2,3-dione in excellent overall yields. This protocol starts with the chlorination of dione using thionyl chloride to give 2,3-dichloroquinoxaline followed by the reaction with equimolar amounts of -nucleophiles (primary amines and secondary amines) or -nucleophiles (phenols and alcohols) to principally afford 2-alkanamino-3-chloroquinoxalines or 2-alkyloxy-3-chloroquinoxalines, respectively. The chloroquinoxalines reacted with the thionation reagent -cyclohexyl dithiocarbamate cyclohexyl ammonium salt in ethanol under reflux to principally give the corresponding quinoxalin-2-yl cyclohexylcarbamodithioate that finally rearranges to give the corresponding thiones in 76-93% overall yields.
View Article and Find Full Text PDFAnchoring Ag(I) into MOF-253 for Effectively Catalyzing Cycloaddition of CO with Alkynyl Alcohols/Amine under Ambient Conditions.
Inorg Chem
January 2025
Inner Mongolia Engineering Research Centre of Lithium-Sulfur Battery Energy Storage, Inner Mongolia Key Laboratory of Solid State Chemistry for Battery, College of Chemistry and Materials Science, Inner Mongolia Minzu University, Tongliao 028000, People's Republic of China.
In the era of global warming, the conversion of carbon dioxide into high-value products has become a widely scrutinized emerging mitigation strategy. Metalation of bpy-containing MOF-253 led to the synthesis of MOF-253-0.5Ag, which acts as an efficient catalyst for the carbonylative cyclization of CO with alkyne molecules (such as propynyl alcohols and propynyl amines) at room temperature and ambient CO pressure, yielding the corresponding α-alkyl cyclic carbonates and oxazolidinones, thus endowing the catalytic system with bifunctional characteristics.
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