Institut für Organische Chemie, Universität Regensburg, Universitätsstrasse 31, D-93053 Regensburg, Germany.
Published: October 2010
AI Article Synopsis
Article Abstract
An efficient, oxidative carbene-catalyzed lactonization reaction has been developed. Using thiazolium precatalysts, a variety of benzodioxepinone products are accessible in good to excellent yields under mild and operationally simple conditions. The reaction does not require high dilution conditions and proceeds via mild and selective oxidation with azobenzene, which can easily be recovered and reused applying inexpensive FeCl(3) as a formal terminal oxidant.
The pathogen-associated -glucosyltransferase IroB is involved in the biosynthesis of salmochelins, -glucosylated derivatives of enterobactin (Ent), which is a triscatecholate siderophore of enteric bacteria including and . Here, we reassess the ability of IroB to -glucosylate non-native triscatecholate mimics of Ent, which may have utility in the design and development of siderophore-based therapeutics and diagnostics. We establish TRENCAM (TC) and MECAM (MC), synthetic Ent analogs with tris(2-aminoethyl)amine- or mesitylene-derived backbones replacing the trilactone core of Ent, respectively, and their monoglucosylated congeners as substrates of IroB.
Electrocatalytic reduction of NO3- is a green and sustainable method that not only helps to treat industrial pollutants in wastewater, but also produces valuable chemicals. However, the slow dynamics of the proton-coupled electron transfer process results in a high barrier and low conversion efficiency. In this work, the Se-deficient FeSe2/Fe3O4 heterojunction was synthesized, which showed excellent electrochemical performance in 0.
The interaction of defects has been proven effective in regulating the mechanical properties of structural materials, while its influence on the physicochemical performance of functional materials has been rarely reported. Herein, we synthesized Ag nanorods with dense stacking faults and investigated how the defect interaction affects the catalytic properties. We found that the stacking faults can couple with each other to form a unique structure of opposite atoms with extortionately high tensile strain.
The electrochemical CO reduction reaction (CORR) is a promising approach to alleviating global warming and emerging energy crises. Yet, the CORR efficiency is impeded by the need for electrocatalysts with good selectivity and efficiency. Recently, single-atom catalysts (SACs) have attracted much attention in electrocatalysis and are more efficient than traditional metal-based catalysts.
State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China.
The complex composition of real plastic wastes poses a significant challenge for their large-scale disposal. A responsive on-site compositional analysis of plastics is informative in choosing downstream processing methods. Nanocatalyst-based assay kit is highly qualified for this scene; however, there remain no efficient nanocatalysts for plastics due to their highly inert chemistry.
