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钯催化P(Ⅲ)导向的不对称C—H键芳基化构建平面手性二茂铁

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有机化学 2024年第5期44卷 1693-1694页

作者：刘泽全周强辉武汉大学化学与分子科学学院武汉430072

茂金属由于其独特的三明治结构,在有机合成、制药和材料科学领域有着广泛的应用.通过在金属茂环上引入两个或两个以上的不同取代基,可打破茂金属骨架整体的对称性从而具有平面手性.平面手性二茂铁是最具代表性的平面手性茂金属化合物^([... 详细信息

茂金属由于其独特的三明治结构,在有机合成、制药和材料科学领域有着广泛的应用.通过在金属茂环上引入两个或两个以上的不同取代基,可打破茂金属骨架整体的对称性从而具有平面手性.平面手性二茂铁是最具代表性的平面手性茂金属化合物^([1-2]).自1951年二茂铁结构确定以来,此类含平面手性的骨架在学术界与工业界得到广泛研究.

关键词：平面手性茂金属化合物芳基化钯催化二茂铁 (Ⅲ) 三明治结构金属骨架

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基于多层六边形MAM的变压器降噪方法设计

振动与冲击 2024年第2期43卷 201-207页

作者：谢泽龙杨廷方刘寒遥周慧康王润璞单淞译周强辉长沙理工大学电气与信息工程学院长沙410114 湖南省计量检测研究院长沙410014

城市变压器的噪声治理是输变电工程中亟需解决的问题。该研究对某110kV变压器的噪声频谱进行分析,得到变压器噪声主频的分布特性。利用不同类型薄膜声学超材料隔声能力的互补性,设计了一种基于多层六边形薄膜型声学超材料的复合隔声结... 详细信息

城市变压器的噪声治理是输变电工程中亟需解决的问题。该研究对某110kV变压器的噪声频谱进行分析,得到变压器噪声主频的分布特性。利用不同类型薄膜声学超材料隔声能力的互补性,设计了一种基于多层六边形薄膜型声学超材料的复合隔声结构。该隔声结构具有体积小、隔声性能强的特点。采用有限元法对六边形薄膜声学超材料建立仿真模型,研究分析薄膜厚度与预应力对其隔声性能的影响,结合分析结果对该材料进行优化。在此基础上,建立复合隔声结构的有限元仿真模型。仿真结果表明,该种复合隔声结构在变压器噪声的主频点均具有较高的声传递损失,最低可达20.4 dB左右,能很好地阻断变压器噪声传播。

关键词：变压器薄膜型声学超材料复合隔声结构噪声

Quick assembly of 1-alkylidenyl-tetrahydroisoquinolines via a Catellani reaction/NBS-mediated cyclization sequence and synthetic applications

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Science China Chemistry 2023年第11期66卷 3136-3140页

作者： Shihu Jia Miao Bai Siwei zhou Ruiqing Sheng Hong-Gang Cheng qianghui zhou Sauvage Center for Molecular Sciences Engineering Research Center of Organosilicon Compounds&Materials(Ministry of Education)Hubei Key Lab on Organic and Polymeric OptoElectronic MaterialsCollege of Chemistry and Molecular SciencesWuhan UniversityWuhan 430072China The Institute for Advanced Studies Wuhan UniversityWuhan 430072China TaiKang Center for Life and Medical Sciences Wuhan UniversityWuhan 430072China

We herein disclose a modular synthesis of 1-bromomethylene-THIQs involving a Catellani reaction of aryl iodides,aziridines,and terminal alkynes followed by an N-bromosuccinimide(NBS)-mediated *** approach features mild reaction conditions,wide substrate scope,good step-economy and good *** on this new method,we have accomplished the concise total synthesis of(±)-cularine,formal synthesis of 8-oxopseudopalmatine as well as the first total synthesis of dactyllactone A,demonstrating the wide synthetic potential of this method.

关键词： 1-bromomethylene-THIQ Catellani reaction (±)-cularine 8-oxopseudopalmatine dactyllactone A

Diversity-Oriented Synthesis of Flavones and Isoflavones via Palladium/Norbornene Cooperative Catalysis

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Chinese Journal of Chemistry 2022年第6期40卷 675-680页

作者： Yuanyuan Ma Qianwen Gao Lan zhou Shanshan Liu Hong-Gang Cheng qianghui zhou Institute for Advanced Studies Wuhan UniversityWuhanHubei 430072ChinaSauvage Center for Molecular SciencesCollege of Chemistry and Molecular Sciences at Wuhan UniversityWuhanHubei 430072China Institute for Advanced Studies Wuhan UniversityWuhanHubei 430072China

Flavones and isoflavones are recognized as privileged heterocyclic scaffolds for the preparation of bioactive *** methods to access these heterocycles are in urgent ***,we report diversity-oriented synthesis of flavones and isoflavones from 3-iodochromones via palladium/norbornene cooperative *** success of this research relies on the use of a unique bridge-head ester modified norbornene derivative as the *** features of this include readily available starting materi-als regarding 3-iodochromones,ortho-C-H arylating and alkylating reagents and ipso-terminating reagents,broad substrate scope,good chemoselectivity,good step-economy and scalability.A large number of structurally diversified flavones,isoflavones and 2,3-diarylated chromones can be quickly prepared in a predictable *** showcased by the efficient formal synthesis of um-bralisib,this chemistry can be treated as another valuable addition to the toolbox of medicinal chemists.

关键词： Diversity-oriented synthesis Oxygen heterocycle Palladium Norbornene C-H activation

Leader-Following Consensus of Multi-Agent Systems via Adaptive Event-Based Control

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Journal of Systems Science & Complexity 2019年第3期32卷 846-856页

作者： ZHU Wei WANG Dandan zhou qianghui Key Lab of Intelligent Analysis and Decision on Complex Systems Chongqing University of Posts and Telecommunications

In this paper, the adaptive event-based control approach is applied to study leader-following consensus of multi-agent systems with linear dynamic models. Adaptive event-based controller and triggering function for each agent are designed, where the adaptive function is only dependent on its own event time instants. A sufficient condition on consensus is proposed, which shows that the adaptive event-based method presented in this paper not only can reduce the communication among neighboring agents, but also can determine the event time instants for each agent without using the global information. Furthermore, the Zeno-behavior for the concerned closed-loop system is excluded. Finally, an example is presented to ilhistratc the effectiveness of the obtained theoretical results.

关键词： Adaptive control event-based control leader-following consensus Zeno-behavior

Adaptive Event-Based Consensus of Multi-Agent Systems with General Linear Dynamics

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Journal of Systems Science & Complexity 2018年第1期31卷 120-129页

作者： WANG Dandan zhou qianghui ZHU Wei Key Lab of Intelligent Analysis and Decision on Complex Systems Chongqing University of Posts and Telecom-munications

在这份报纸，有一般线性动力学的多代理人系统的适应基于事件的一致被考虑。一个新奇适应基于事件的控制器和州依赖者的被触发功能为每个代理人被建议。没有假设，一致能被完成(一， B ) 是 stabilizable。而且，担心的靠近环的系统的 Z... 详细信息

在这份报纸，有一般线性动力学的多代理人系统的适应基于事件的一致被考虑。一个新奇适应基于事件的控制器和州依赖者的被触发功能为每个代理人被建议。没有假设，一致能被完成(一， B ) 是 stabilizable。而且，担心的靠近环的系统的 Zeno 行为也在某些条件下面被排除。最后，一个数字模拟例子被举显示出理论结果的有效性。

关键词：线性动力学代理人事件系统触发功能数字模拟控制器

Precise Functionalization of Remote C-H Bonds

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Chemical Research in Chinese Universities 2020年第4期36卷 727-728页

作者： LIU Zeshui CHENG Honggang zhou qianghui College of Chemistry and Molecular Sciences Wuhan UniversityWuhan 430072P.R.China

Remote C-H bond functionalization of arenes with precise control is a recognized extraordinary challenge in organic *** and Houk el *** an elegant strategy to distinguish and functionalize remote Csp2-H bonds of(hetero)arenes within one-bond distance by the interplay of a remote directing template and a transient norbornene-type mediator.A wide range of medicinally important benzoazines are well compatible with this method The chemistry significantly expands the toolbox for site-selective functionalization of remote Co2-H bond of(hetero)*** work has been published in Nature Chemistry in March,2020.

关键词： synthesis. bonds precise

Fully distributed consensus of second-order multi-agent systems using adaptive event-based control

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Science China(Information Sciences) 2018年第12期61卷 199-201页

作者： Wei ZHU qianghui zhou DANDan WANG Gang FENG Key Lab of Intelligent Analysis and Decision on Complex Systems Chongqing University of Posts and Telecommunications Key Lab of Industrial Internet of Things & Networked Control Ministry of EducationChongqing University of Posts and Telecommunications Department of Mechanical and Biomedical Engineering City University of Hong Kong

Dear editor,In recent years, the distributed consensus of multiagent systems (MASs) has attracted compelling attention because of its potential applications in many fields such as sensor networks, unmanned aerial vehicle (UAV) formation flying, and multiple signals tracking. The central task in the distributed consensus of MASs is to design distributed control protocols to achieve the consensus

关键词： In MAS Fully distributed consensus of second-order multi-agent systems using adaptive event-based control

钯/降冰片烯/手性氨基酸协同催化立体选择性构建全碳桥环分子骨架

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有机化学 2022年第1期42卷 307-309页

作者：叶金祥周强辉武汉大学化学与分子科学学院武汉430072

钯/降冰片烯(NBE)协同催化是一种制备多取代芳烃的策略,由Catellani小组^([1])在1997年首次报道,因此被称为Catellani反应.Catellani反应将经典的交叉偶联反应和C—H键活化有效连接起来,能对卤代芳烃(主要是碘代芳烃)邻位C—H键和原位C... 详细信息

钯/降冰片烯(NBE)协同催化是一种制备多取代芳烃的策略,由Catellani小组^([1])在1997年首次报道,因此被称为Catellani反应.Catellani反应将经典的交叉偶联反应和C—H键活化有效连接起来,能对卤代芳烃(主要是碘代芳烃)邻位C—H键和原位C—X键进行连续的官能团化,一次构建多根化学键,合成一系列其他方法难以合成的多取代芳烃和芳并环结构单元.

关键词：协同催化有效连接交叉偶联反应降冰片烯分子骨架立体选择性卤代芳烃结构单元