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Iodine-Triphenylphosphine Mediated Regioselective Sulfenylation of Imidazoheterocycles with Sodium Sulfinates

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Iodine-Triphenylphosphine Mediated Regioselective Sulfenylat...

Deep eutectic solvents for separation and purification applications in critical metal metallurgy:Recent advances and perspectives

中国化学会全国第十一届有机合成化学学术研讨会

作者： huang xu-hu Wang Xin Ge Ze-Mei Li Run-Tao State Key Laboratory of Natural and Biomimetic Drugs School of Pharmaceutical SciencesPeking University

Imidazoheterocyclic derivatives have been found to be key structural units in many natural products and drugs which exhibited a wide range of biological ***,the biological profile is mainly dependent on the nature of the substitutional groups and introduction of sulfenyl groups on the aza-aromatic rings that could impart marked biological ***,the synthesis of sulfenated imidazoheterocyclic molecules has gained much *** report herein an efficient iodine-triphenylphosphine mediated synthesis of sulfenated imidazoheterocycles using sodium sulfinates as sulfenylation reagents under transition-metal-free conditions.A wide range of imidazo[1,2-a]pyridine derivatives with both electron-donating and electron-with-drawing groups were tested and the corresponding sulfenyl imidazoheterocycles were obtained in good to excellent *** scope of the methodology has been extended to other imidazoheterocycles including imidazo[2,1-b]thiazoles,imidazo[1,2-a]pyrimidines and 2-phenylbenzo[d]imidazo[2,1-b]thiazole derivatives.

关键词： imidazoheterocycles sodium sulfinates regioselective sulfenylation

来源： cnki会议评论

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 1-19页

作者： Shuo Chen Shengpeng Su Yanfang huang Bingbing Liu hu Sun Shuzhen Yang Guihong Han School of Chemical Engineering Zhengzhou UniversityZhengzhou 450001China Zhongyuan Critical Metals Laboratory Henan ProvinceZhengzhou 450001China

Solvent extraction,a separation and purification technology,is crucial in critical metal *** solvents commonly used in solvent extraction exhibit disadvantages,such as high volatility,high toxicity,and flammability,causing a spectrum of hazards to human health and environmental *** solvents have been recognized as potential alternatives to these harmful organic *** the past two decades,several neoteric solvents have been proposed,including ionic liquids(ILs)and deep eutectic solvents(DESs).DESs have gradually become the focus of green solvents owing to several advantages,namely,low toxicity,degradability,and low *** this critical review,their classification,formation mechanisms,preparation methods,characterization technologies,and special physicochemical properties based on the most recent advancements in research have been systematically ***,the major separation and purification applications of DESs in critical metal metallurgy were comprehensively ***,future opportunities and challenges of DESs were explored in the current research *** conclusion,this review provides valuable insights for improving our overall understanding of DESs,and it holds important potential for expanding separation and purification applications in critical metal metallurgy.

关键词： deep eutectic solvents preparations properties separation and purification critical metal metallurgy

Reverse modulation of defect density of Ce-MOF-808 by solventassisted ligand exchange for dicyclopentadiene hydrogenation

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Science China Chemistry 2025年

作者： Danfeng Zhao Fajie hu Rushuo Li Xinmeng xu Zhaokun Wang Zuoshuai Xi Jun Tong Xiubing huang Ge Wang Advanced Innovation Center for Materials Genome Engineering Beijing Key Laboratory of Function Materials for Molecule & Structure Construction School of Materials Science and Engineering University of Science and Technology Beijing

Defect engineering is a pivotal strategy for tailoring the electronic structure and physicochemical properties of catalysts, yet the straightforward manipulation of defect density in porous materials presents a current challenge. In this work, we achieved precise control over the coordination unsaturated site（CUS） content and pore architecture of Ce-MOF-808 by employing 2-fluorobenzoic acid（2-FBA） as a modifier. Leveraging the p Kadisparities among three ligands（1,3,5-tricarboxylic benzoic acid,formic acid, and 2-FBA）, we preserved the spn topology of Ce-MOF within an aqueous system, while realizing partial substitution of the auxiliary ligands and saturation of the CUS. The amount of 2-FBA was negatively correlated with the number of ligand defects, and the consequent decrease in Ce3+content and the increase in the number of ligand linkages also induced crystal structure transformation. The modulation of the defect structure was correlated with the catalytic performance of dicyclopentadiene（DCPD） hydrogenation reaction, in which Ce-MMF0.15, constructed by the modulation of 0.15 mol amount of 2-fluorobenzoic acid, exhibited an optimal ligand defect density and micro-mesoporous structure, enabling almost complete conversion of DCPD at 100 ℃ and 2 MPa. This article also elucidates the correlation between the regulation of defect density and the accessibility of frustrated Lewis pair（FLP） active sites, guiding the application of novel porous intrinsic FLP materials in hydrogenation catalysis.

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Near-infrared organic photosensitizers with aggregation-induced emission and switchable fluorescence for fungal infection therapy

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Science China Chemistry 2025年

作者： Xinzhe Yang Zixuan huang Keke Ding huili Yang Lirong Wang Qing Xia Rong hu Guang Shi Bingjia xu Anjun Qin School of Chemistry South China Normal University State Key Laboratory of Luminescent Materials and Devices Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates Center for Aggregation-Induced Emission AIE Institute South China University of Technology Department of Urology The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital of Wannan Medical College) School of Chemistry and Chemical Engineering University of South China

The development of near-infrared (NIR) photosensitizers with aggregation-induced emission (AIE) properties,switchable luminescence colors,and satisfactory photodynamic therapy (PDT) effects on the treatment of fungal infection is of great importance but very ***,two ionic organic luminogens are constructed by employing diphenylamine,diphenylacrylonitrile/1,2-diphenylethene,and methylated quinoline cation as building *** is found that the resulting compounds TCQF and TQF show apparent AIE properties and produce intense fluorescence with high photoluminescence quantum yields of up to 31.2%in the solid *** the meantime,their emission colors can be switched between red and NIR and in the NIR region by mechanical force and solvent vapor,respectively,thereby enabling remarkable and reversible mechanochromism with emission variations of up to 104 *** excitingly,TCQF and TQF can efficiently generate ROS under the illumination of white light and show excellent antimicrobial activities and satisfactory PDT *** by the unique anti-fungus properties,TCQF is employed as a biocompatible NIR photosensitizer for treating wound infection with ***,and apparent PDT effects are *** work provides a new direction for the development of multifunctional NIR materials with AIE properties.

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Sulfolane‑Based Flame‑Retardant Electrolyte for High‑Voltage Sodium‑Ion Batteries

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Nano-Micro Letters 2025年第2期17卷 498-516页

作者： xuanlong He Jie Peng Qingyun Lin Meng Li Weibin Chen Pei Liu Tao huang Zhencheng huang Yuying Liu Jiaojiao Deng Shenghua Ye xuming Yang Xiangzhong Ren Xiaoping Ouyang Jianhong Liu Biwei Xiao Jiangtao hu Qianling Zhang Graphene Composite Research Center College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhen 518060People’s Republic of China Center of Electron Microscopy State Key Laboratory of Silicon and Advanced Semiconductor MaterialsSchool of Materials Science and EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China GRINM(Guangdong)Research Institute for Advanced Materials and Technology FoshanGuangdong 528051People’s Republic of China College of Energy Engineering Zhejiang UniversityHangzhouZhejiang 310027People’s Republic of China School of Materials Science and Engineering Xiangtan UniversityXiangtan 411105People’s Republic of China Shenzhen Eigen-Equation Graphene Technology Co.Ltd Shenzhen 518000People’s Republic of China

Sodium-ion batteries hold great promise as next-generation energy storage ***,the high instability of the electrode/electrolyte interphase during cycling has seriously hindered the development of *** particular,an unstable cathode–electrolyte interphase(CEI)leads to successive electrolyte side reactions,transition metal leaching and rapid capacity decay,which tends to be exacerbated under high-voltage ***,constructing dense and stable CEIs are crucial for high-performance *** work reports localized high-concentration electrolyte by incorporating a highly oxidation-resistant sulfolane solvent with non-solvent diluent 1H,1H,5H-octafluoropentyl-1,1,2,2-tetrafluoroethyl ether,which exhibited excellent oxidative stability and was able to form thin,dense and homogeneous *** excellent CEI enabled the O3-type layered oxide cathode NaNi_(1/3)Mn_(1/3)Fe_(1/3)O_(2)(NaNMF)to achieve stable cycling,with a capacity retention of 79.48%after 300 cycles at 1 C and 81.15%after 400 cycles at 2 C with a high charging voltage of 4.2 *** addition,its nonflammable nature enhances the safety of *** work provides a viable pathway for the application of sulfolane-based electrolytes on SIBs and the design of next-generation high-voltage electrolytes.

关键词： Sodium-ion batteries Sulfolane-based electrolyte High voltage Layered oxide cathode Flame retardant

基于正交设计的船用柴油机燃烧系统参数匹配及优化

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船舶工程 2017年第8期39卷 55-59页

作者：黄朝霞黄加亮徐虎孙思远杨柏枫集美大学理学院福建厦门361021 集美大学轮机工程学院福建厦门361021 福建省船舶与海洋工程重点实验室福建厦门361021 泉州师范学院福建泉州362000

为研究柴油机燃烧系统参数匹配对柴油机动力和排放性能的影响,首先分别利用AVL_BOOST和AVL_FIRE仿真软件建立4190ZLC-2型船用柴油机整机模型和缸内燃烧高压循环模型,然后基于已建模型应用正交试验设计方法安排柴油机进气系统、喷油系统... 详细信息

为研究柴油机燃烧系统参数匹配对柴油机动力和排放性能的影响,首先分别利用AVL_BOOST和AVL_FIRE仿真软件建立4190ZLC-2型船用柴油机整机模型和缸内燃烧高压循环模型,然后基于已建模型应用正交试验设计方法安排柴油机进气系统、喷油系统和燃烧室结构尺寸参数匹配仿真计算。研究结果表明,通过极差分析可以得出燃烧系统参数对4190ZLC-2型柴油机性能的影响主次顺序。以柴油机指示功率为评价指标时,参数组合0.26 mm-28°CA-160°-0.9-145 mm-2.6 mm-22 mm(喷孔直径-喷油提前角-油束夹角-涡流比-喉口直径-凸台高度-凹坑半径)对应的指示功率为63.40 k W,比原机仿真值高15%;以NOX排放为评价指标时,参数组合0.30 mm-24°CA-140°-0.4-135 mm-6.6 mm-14 mm(喷孔直径-喷油提前角-油束夹角-涡流比-喉口直径-凸台高度-凹坑半径)对应的NOX排放质量分数为0.015 7%,比原机仿真值低30.2%。

关键词： 4190 ZLC-2型船用柴油机正交设计燃烧系统指示功率 NO_X排放匹配优化

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弹性元件对大型可倾瓦轴承静动特性的影响

交通运输工程学报 2017年第3期17卷 83-89页

作者：席文奎韩强辉黄天虎徐建宁蒋翔俊西安石油大学机械工程学院陕西西安710065 中国石油长庆油田公司油气工艺研究院陕西西安710018 西安交通大学机械制造系统工程国家重点实验室陕西西安710054

为提高舰船运载机组稳定性,并有效抑制振动,在机组推进轴系中采用了一种可倾瓦轴承支点弹性技术(瓦块支点安装有蝶形弹簧),以某大型燃气轮机为对象,在轴系四瓦可倾瓦轴承瓦块支点处引入蝶形弹簧结构,并采用流固热耦合计算模型和轴承多... 详细信息

为提高舰船运载机组稳定性,并有效抑制振动,在机组推进轴系中采用了一种可倾瓦轴承支点弹性技术(瓦块支点安装有蝶形弹簧),以某大型燃气轮机为对象,在轴系四瓦可倾瓦轴承瓦块支点处引入蝶形弹簧结构,并采用流固热耦合计算模型和轴承多场分析技术,分析了可倾瓦轴承的温度场、压力场、刚度与阻尼等特性参数,研究了支点弹性技术对大型可倾瓦轴承摩擦学与动力学特性的影响规律。计算结果表明:在3 000r·min^(-1)工作转速下,刚支结构时可倾瓦轴承最大油膜压力为6.5MPa,弹支结构时最大油膜压力为6.7MPa,弹支结构相比刚支结构轴承油膜压力略有上升,此时2种支点结构轴承的温度变化不大,最高温度分别为98.95℃与98.85℃;随着转速的增大,2种支点结构可倾瓦轴承的主刚度均呈下降趋势,而其交叉刚度只在±0.1MN·m^(-1)范围内变化;在3 000r·min^(-1)下,弹支结构轴承主刚度为3.5GN·m^(-1),主阻尼为6MN·s·m^(-1),相比刚支结构轴承主刚度提高了59%,主阻尼提高了39%。可见:可倾瓦轴承采用瓦块支点弹性技术,轴承温度变化不大,最高油膜压力略有增加,轴承主刚度和主阻尼明显提高,这对增加稳定性和抑制振动十分有利。

关键词：船舶工程可倾瓦轴承热弹润滑模型弹性支点静动特性稳定性

抗肿瘤先导化合物990209孪药的设计合成及活性

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中国药物化学杂志 2018年第5期28卷 363-370页

作者：贺佳楠黄旭虎张涵葛泽梅李润涛北京大学药学院天然药物及仿生药物国家重点实验室北京100191

目的改善抗肿瘤先导化合物990209的药效学性质。方法基于孪药的设计原理,设计并合成不同连接臂的990209孪药,采用MTT法测定目标化合物对人肝癌细胞Bel-7402增殖的影响。结果与结论设计合成了6种不同连接臂的990209孪药,其结构经核磁共... 详细信息

目的改善抗肿瘤先导化合物990209的药效学性质。方法基于孪药的设计原理,设计并合成不同连接臂的990209孪药,采用MTT法测定目标化合物对人肝癌细胞Bel-7402增殖的影响。结果与结论设计合成了6种不同连接臂的990209孪药,其结构经核磁共振氢谱、核磁共振碳谱以及高分辨质谱确证;初步体外活性评价结果表明,孪药6的抗肿瘤活性优于先导化合物990209,具有进一步研究的价值。

关键词：先导物990209 孪药合成抗肿瘤活性

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胞外植酸酶高产酵母菌的选育

四川大学学报（自然科学版） 1996年第6期33卷 751-754页

作者：冯胜王忠彦黄英徐柳胡永松四川大学生物工程系四川成都

从酒糟样品中筛选得到五株胞外植酸酶活性较高的酵母，选择酶活最高的１－１作为出发菌株，经单倍体分离、原生质体制备、紫外诱变，最后得到一株突变株Ｍｓｐ－２１２８，其胞外植酸酶活力为２３．０８Ｕ／ｍＬ，比出发菌株提高了８２％。

关键词：酵母植酸酶选育