摘要：
<jats:title>Comprehensive Summary</jats:title><jats:p>An alkyl radical initiated cyclization/tandem reaction of alkyl bromides and alkyl electrophiles by using potassium metabisulphite (K<jats:sub>2</jats:sub>S<jats:sub>2</jats:sub>O<jats:sub>5</jats:sub>) as a connector is developed for the synthesis of various lactam‐substituted alkyl sulfones. Notably, this process does not require a metal catalyst or metal powder reductant, highlighting its environmentally friendly features. The reaction demonstrates outstanding substrate adaptability and a high tolerance towards diverse functional groups. Furthermore, the biologically active molecules and commercially available drugs with a late‐stage modification are also highly compatible with this transformation. Mechanistic studies revealed that the reaction proceeds through a single‐step process involving intramolecular radical cyclization, "SO<jats:sub>2</jats:sub>" insertion, and external alkyl incorporation.</jats:p><jats:p><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="graphic/cjoc202400154-gra-0001.png" xlink:title="image" />
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摘要：
The conversion of extremely hazardous As(III) to less toxic As(V) and subsequent adsorption onto the catalyst surface holds an advisable process for arsenic contaminants treatment. However, the conflictual mechanism of oxidation and adsorptive remains a huge challenge and unexplored for arsenic removal. In this work, a dual regulation platform of C3N4/C3N5.4 molecular heterojunction was well designed and constructed. The optimized C3N4/C3N5.4 exhibited excellent photocatalytic As(III) oxidation rate and As(V) adsorption efficiency under water, fluorosilicic acid and phosphoric acid solutions. The excellent performance benefits from the molecular heterojunctions induced internal electronic interactions and a local polarization, which contributes to the for-mation of built-in electric field (BEF) for enhancing exciton dissociation and charge transfer. Furthermore, the optimized electronic structure serves as the adsorption and oxidation site for simultaneously promoting charge interaction with arsenic elements, which greatly reinforces the absorption of arsenic. Our work may pave the way to optimize the electronic structure of bifunctional material for arsenic remediation.
摘要：
Herein, decarboxylative C(sp3)–Sb coupling of aliphatic carboxylic acid derivatives with chlorostibines to access alkylstibines has been achieved. This catalyst-, ligand-, and base-free approach using zinc as a reductant affords various kinds of benzyldiarylstibines and other monoalkyldiarylstibines and tolerates various functional groups, including chlorine, bromine, hydroxyl, amide, sulfone, and cyano groups. The late-stage modification and the gram-scale experiments illustrate its potential application.
期刊：
EES Catalysis,2024年2(1):180-201 ISSN：2753-801X
作者机构：
Advanced Catalytic Engineering Research Center of the Ministry of Education, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China;Greater Bay Area Institute for Innovation, Hunan University, Guangzhou, 511300, P. R. China;College of Science, Central South University of Forestry and Technology, Changsha 410004, P. R. China;[Bing-Hao Wang; Guang-Hui Chen; Biao Hu; Xiong Wang; Sheng Tian; Xing-Sheng Hu; Yang Li; Chao Peng] Advanced Catalytic Engineering Research Center of the Ministry of Education, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 P. R. China huagong042cl@163.com sf_yin@hnu.edu.cn ;[Lang Chen] Advanced Catalytic Engineering Research Center of the Ministry of Education, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 P. R. China huagong042cl@163.com sf_yin@hnu.edu.cn <&wdkj&> Greater Bay Area Institute for Innovation, Hunan University Guangzhou 511300 P. R. China
摘要：
<jats:p>Photocatalytic nitrogen reduction using inexhaustible solar energy has been considered as a promising strategy for NH<jats:sub>3</jats:sub> synthesis. The design of heterogeneous photocatalysts with tunable MSIs is of great significance.</jats:p>
摘要：
Development of nitrogen-rich energetic materials has gained much attention because of their remarkable properties including large nitrogen content and energy density, good thermal stability, low sensitivity, good energetic performance, environmental friendliness and so on. Tetrazole has the highest nitrogen and highest energy contents among the stable azoles. The incorporation of diverse explosophoric groups or substituents into the tetrazole skeleton is beneficial to obtain high-nitrogen energetic materials having excellent energetic performance and suitable sensitivity. In this review, the development of high-nitrogen energetic materials based on tetrazole skeleton is highlighted. Initially, the property and utilization of nitrogen-rich energetic materials are presented. After showing the advantage of the tetrazole skeleton, the high-nitrogen energetic materials based on tetrazole are classified and introduced in detail. Based on different types of energetic materials (EMs), the synthesis and properties of nitrogen-rich energetic materials based on mono-, di-, tri- and tetra-tetrazole are summarized in detail.
