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Direct Introduction of EthoxycarbonyldifluoromethyI-Group to Heteroarenes with Ethyl Bromodifluoroacetate via Visible-Light Photocatalysis

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Chinese Journal of Chemistry 2013年第7期31卷 885-891页

作者： Qingyu Lin lingling chu Feng-Ling Qing Key Laboratory of Organofluorine Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China College of Chemistry Chemical Engineering and Biotechnology Donghua University 2999 North Renmin Lu Shanghai 201620 China

A mild and versatile approach for the direct introduction of ethoxycarbonyldifluoromethyl-group to heteroarenes via visible-light photocatalysis has been developed. The new photoredox protocol has enabled the difluoro... 详细信息

关键词： difluoromethylenation heteroarenes visible-light photocatalysis

Selective Ni-catalyzed cross-electrophile coupling of alkynes,fluoroalkyl halides,and vinyl halides

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Chinese Chemical Letters 2022年第8期33卷 4074-4078页

作者： Yubei Dai Fang Wang Shengqing Zhu lingling chu State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Center for Advanced Low-Dimension MaterialsCollege of ChemistryChemical Engineering and BiotechnologyDonghua UniversityShanghai 201620China

We report a Ni-catalyzed three-component cross-electrophile coupling of alkynes with alkenyl halides and fluoroalkyl halides to generate fluoroalkyl-incorporated 1,*** mild and operationally simple protocol is distinguished by its broad substrate scope and excellent chemo-,regio-,and stereo-selectivity,offering a new and organometallic agent-free platform for the construction of fluoroalkyl-incorporated diene *** mechanistic studies have been conducted to probe the potential reaction pathway.

关键词： Fluoroalkylation Cross-electrophile coupling Nickel catalysis Difunctionalization Alkynes

Design,modeling,and control of morphing aircraft:A review

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Chinese Journal of Aeronautics 2022年第5期35卷 220-246页

作者： lingling chu Qi LI Feng GU Xintian DU Yuqing HE Yangchen DENG State Key Laboratory of Robotics Shenyang Institute of AutomationChinese Academy of SciencesShenyang 110016China Institutes for Robotics and Intelligent Manufacturing Chinese Academy of SciencesShenyang 110169China University of Chinese Academy of Sciences Beijing 100049China Shenyang Aircraft Design&Research Institute Shenyang 110034China

A morphing aircraft can adapt its configuration to suit different types of tasks,which is also an important requirement of Unmanned Aerial Vehicles(UAV).The successful development of an unmanned morphing aircraft involves three steps that determine its ability and intelligent:configuration design,dynamic modeling and flight *** study conducts a comprehensive survey of morphing ***,the methods to design the configuration of a morphing aircraft are presented and ***,the nonlinear dynamic characteristics and aerodynamic interference caused by a morphing wing are ***,the dynamic modeling and flight control methods for solving the flight control problems are summarized with respect to these ***,the general as well as special challenges ahead of the development of intelligent morphing aircraft are *** findings can provide a theoretical and technical reference for designing future morphing aircraft or morphing-wing UAVs.

关键词： Aircraft design Dynamic modeling Fault tolerance Flight control Intelligent material Morphing aircraft Unmanned Aerial Vehicles(UAV)

Ligand-accelerated, branch-selective oxidative cyanation of alkenes

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Science Bulletin 2018年第22期63卷 1479-1484页

作者： Jun Yang Huan Li Jian Qin Fan Song Jian Zhang Feng-Ling Qing lingling chu State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Chemistry Chemical Engineering and Biotechnology Center for Advanced Low-Dimension Materials Donghua University Key Laboratory of Organofluorine Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences

A ligand-accelerated, branch-selective oxidative cyanation of alkenes has been developed in the presence of catalytic Cu_*** styrenes and aliphatic alkenes with directing groups are well tolerated in this inexpensive *** mild condition allows for a good tolerance of functional groups, enabling facile access to a diverse array of simple and complex branched vinyl *** wide synthetic utility of this methodology has been further demonstrated via the efficient scaleup in both batch and continuous flow processes.

关键词： Vinyl nitrile Cyanation Branch-selective Alkene Copper catalysis

Yizhi Xingnao prescription improves the cognitive function of patients after a transient ischemic attack

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Neural Regeneration Research 2012年第6期7卷 434-439页

作者： Donglin Jiang Xing chu lingling Hu Shengyang Jiang Feng Hu Junming Sun Chengwan Li The Third Affiliated Hospital of Nantong University Wuxi 214000 Jiangsu Province China

Patients with mild cognitive impairment after a transient ischemic attack were included in this study. They were treated with Yizhi Xingnao prescription, ergoloid mesylates or aspirin for 60 days. Evaluation using the Montreal Cognitive Assessment Scale showed that cognitive function was significantly improved in all patients, especially after the combined treatment of Yizhi Xingnao and aspirin. The scores from the Montreal Cognitive Assessment Scale were improved overall and the effective treatment rate was as high as 79%, which was higher than patients treated with a combination of ergoloid mesylates and aspirin, or aspirin alone. Our experimental findings indicate that YizhiXingnao prescription can improve mild cognitive impairment after a transient ischemic attack, and that it is more effective than ergoloid mesylates.

关键词： Yizhi Xingnao prescription transient ischemic attack mild cognitive impairment Montreal Cognitive Assessment Scale ergoloid mesylates aspirin

Radical Multicomponent Reactions Involving Alkenes and Alkynes

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Radical Multicomponent Reactions Involving Alkenes and Alkyn...

S1-supported Pd@CeO_(2) quasi-core@shell materials as advanced catalysts for selective hydrogenation of furfural

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作者： lingling chu Center of Advanced Low-dimension Materials Donghua University

＜正＞The development of general, efficient methodologies for the assembly of highly complex molecules from simple materials is a long-standing goal in synthetic chemistry. Multicomponent cascade reactions（MCRs）1 in...

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Chinese Chemical Letters 2024年第3期35卷 493-496页

作者： Xiang chu lingling Zhang Ke Wang Rui Zhang Xiao Wang Shuyan Song Hongjie Zhang State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China School of Applied Chemistry and Engineering University of Science and Technology of ChinaHefei 230026China

Bare Pd metal nanoparticles invariably suffer from poor selectivity in furfural hydrogenation by forming flat configurations,with the aromatic ring of the substrate molecules parallel to the metal ***,we put forward a promising solution by using CeO_(2)as promoters to modify Pd nanoparticles for modulating the adsorption behaviors of furfural *** achieve the highly-desired ultra-small Pd@CeO_(2)core@shell nanostructure,a“constrained auto-redox”synthesis is developed,in which silicalite-1 supports play the key role of providing their surface as the landing place of PdO_(x)precursors for inhibiting the overgrowth and the *** the best of our knowledge,this is one of the smallest core@shell materials obtained from aqueous *** evaluated as catalysts,Pd@CeO_(2)/S-1 gives 98.9%conversion of furfural with 94.3%selectivity for furfural alcohol in 15 h,which is much better than that of Pd/S-1(88.6%conversion with 44.3%selectively).The DFT simulation reveals a strong interaction between the defects of CeO_(2)and the oxygen atom of the–CHO group in furfural molecules,which benefits the selective hydrogenation occurred in the–CHO group rather than the furan ring.

关键词： Core@shell Palladium Ceria Auto-redox synthesis Hydrogenation

High-efficiency PdNi single-atom alloy catalyst toward cross-coupling reaction

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Chinese Chemical Letters 2024年第7期35卷 480-483页

作者： Baokang Geng Xiang chu Li Liu lingling Zhang Shuaishuai Zhang Xiao Wang Shuyan Song Hongjie Zhang State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China School of Applied Chemistry and Engineering University of Science and Technology of ChinaHefei 230026China Department of Chemistry Tsinghua UniversityBeijing 100084China

The preparation of Pd-based catalysts with rich electrons and a high atom dispersion rate is of great significance for improving the reactivity of cross-coupling reactions,which is a powerful tool for pharmaceutical and fine chemical ***,we report a PdNi single-atom alloy(SAA)catalyst in which isolated Pd single atoms are anchored onto the surface of Ni nanoparticles(NPs)applied for Suzuki coupling reactions and Heck coupling *** 0.1%PdNi SAA exhibits extraordinary catalytic activity(reaction rate:17,032.25 mmol h^(-1)gPd^(-1))toward the Suzuki cross-coupling reaction between 4-bromoanisole and phenylboronic acid at 80℃for 1 *** excellent activity is supposed to attribute to the 100 percent utilization rate of Pd atoms and the highly stable surface zero-valance Pd atoms,which provides abundant sites and electrons for the adsorption and fracture of the C-X(X=Cl,Br,I)***,our work demonstrates the excellent application prospect of SAAs for cross-coupling reactions.

关键词： Single-atom alloy Cross-coupling reaction Palladium catalysis Heterogeneous catalysis High-efficiency

对映选择性自由基偶联促进烯烃不对称还原氮杂芳基化反应

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有机化学 2022年第6期42卷 1878-1879页

作者：秦健储玲玲东华大学化学化工与生物工程学院先进低维材料研究中心上海201620

近些年来,可见光催化作为一种温和可控的催化模式,在构建复杂功能化合物等领域展现了优异的催化活性和应用价值[1].然而,该类反应形成的产物大多数是消旋的,如何发展不对称可见光催化反应来构建手性功能分子仍存在诸多挑战.在光催化反应... 详细信息

近些年来,可见光催化作为一种温和可控的催化模式,在构建复杂功能化合物等领域展现了优异的催化活性和应用价值[1].然而,该类反应形成的产物大多数是消旋的,如何发展不对称可见光催化反应来构建手性功能分子仍存在诸多挑战.在光催化反应中,由于涉及高活性的自由基物种,往往导致手性催化剂难以在形成立体中心的过程中提供显著的对映面区分.同时,内在的光催化循环容易引起外消旋背景反应,进一步降低了反应对映选择性.因此,如何发展新型不对称光催化模式,实现自由基物种立体选择性控制,进而构建手性功能分子一直备受化学家们的广泛关注.

关键词：不对称还原芳基化反应立体选择性手性催化剂自由基可见光催化对映选择性催化活性