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Green Synthesis and Catalysis 2024年第2期5卷 94-101页

作者： Ying Lv Li Chen xinghan yun Kun Li Shengjiao Yan Key Laboratory of Medicinal Chemistry for Natural Resource(yunnan University) Ministry of EducationSchool of Chemical Science and TechnologyYunnan UniversityKunming 650091China

A novel method for the preparation of highly functionalized 4-oxo-3-(1H-pyrrol-3-yl)-4H-chromenes(OPCMs)from 3-formylchromones andα-isocyanoacetates via an unprecedented three-component[1+1+3]cycloaddition reaction in one pot was *** three-component cascade reaction was enabled by refluxing a mixture of the substrates in 1,4-dioxane in the presence of Ag_(2)CO_(3) as a Lewis acid *** a result,a series of functionalized pyrroles(OPCMs,3),was prepared regioselectively and in high yields(80%-88%)through the formation of three *** protocol can be used in the synthesis of OPCMs rather than through conventional,multi-step reactions and is suitable for both combinatorial and parallel syntheses of pyrroles.

关键词： 4-Oxo-3-(1H-pyrrol-3-yl)-4H-chromenes Three-component Cascade reaction [1+1+3]cycloaddition 3-Formylchromones

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An environmentally benign multi-component reaction:Highly regioselective synthesis of functionalized 2-(diarylphosphoryl)-1,2-dihydro-pyridine derivatives

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Green Synthesis and Catalysis 2022年第1期3卷 59-68页

作者： Kun Li Ying Lv Zihan Lu xinghan yun Shengjiao Yan Key Laboratory of Medicinal Chemistry for Natural Resource(yunnan University) Ministry of EducationSchool of Chemical Science and TechnologyYunnan UniversityKunming 650091China

A novel protocol was developed for the construction of highly functionalized 2-(diarylphosphoryl)-1,2-dihydropyridine derivatives(DAPDHPs)from 3-formylchromones(1),heterocyclic ketene aminals(HKAs,2),and phosphine oxides(R_(2)P(O)H,3)via a novel,one-pot cascade *** of the reaction conditions determined that refluxing the mixture of the 3-formylchromones,HKAs,and various R_(2)P(O)H in propylene carbonate(PC)in the presence of triethylamine as a base facilitated the highest yields of the DAPDHP *** cascade reaction,which involved the cleavage of one C-O bond in the 3-formylchromone substrates and the formation of three new bonds(one C-C,one C-N,and one C-P bond),enabled the synthesis of a small library of DAPDHP *** dearomatized DAPDHP products were formed by the regioselective nucleophilic addition of the R_(2)P(O)H reagents to the intermediate pyridinium salts *** approach has several advantages such as the use of an environmentally-friendly solvent,simple and practical operation(with filtration and washing without column chromatography separation),good yields,and a product with potential biological activity.

关键词： 2-(Diarylphosphoryl)-1,2-dihydropyridine Cascade reaction Selective synthesis Heterocyclic ketene aminals

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Multicomponent cascade reaction of 3-formylchromones:Highly regioselective synthesis of functionalized pyridin-2(1H)-ones

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绿色合成与催化(英文) 2023年第3期4卷 231-239页

作者： xinghan yun Li Chen Ying Lv Zihan Lu Kun Huang Shengjiao Yan Key Laboratory of Medicinal Chemistry for Natural Resource(yunnan University) Ministry of EducationSchool of Chemical Science and TechnologyYunnan UniversityKunming650091China

A novel protocol was developed for the construction of highly functionalized pyridin-2(1H)-ones from 3-formylchromones,ethyl 2-(pyridin-2-yl)acetate derivatives and amines via a complex multicomponent cascade reaction involving targeted duplicated ring-opening and duplicated cyclization reactions which form skeleton-reorganized target compounds.A series of pyridin-2(1H)-ones were produced by this reaction accompanied by the formation of three bonds(one C–N and two C–C bonds)and the cleavage of one bond in one *** protocol can be used in combinatorial and parallel syntheses of various pyridin-2(1H)-ones with potent biological *** advantages of this approach include simple and practical operation(multicomponent one-pot),high yields(up to 91%),and products with potential biological activity.

关键词： Pyridin-2(1H)-ones Cascade reaction Selective synthesis 3-Formylchromones

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Spherical Packing Superlattices in Self-Assembly of Homogenous Soft Matter:Progresses and Potentials

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Chinese Journal of Polymer Science 2023年第5期41卷 607-620,I0005页

作者： Yuchu Liu Huanyu Lei Qing-yun Guo Xianyou Liu xinghan Li Yuean Wu Weiyi Li Wei Zhang Geng Xin Liu Xiao-yun Yan Stephen Z.D.Cheng South China Advanced Institute for Soft Matter Science and Technology School of Molecular Science and EngineeringSouth China University of TechnologyGuangzhou 510640China School of Polymer Science and Polymer Engineering The University of AkronAkron OH 44325-3909USA State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Center for Advanced Low-dimension MaterialsCollege of Material Science and EngineeringDonghua UniversityShanghai 201620China

The construction of complex superlattices using homogenous soft matter has great potential for the bottom-up fabrication of complex,nanoscale *** topic is not only interested in scientific exploring for new concepts of supramolecular crystals with nanometer in sizes,which is about thousand times larger in volumes than those of normal crystals,but also practically important to provide construction principles of metamaterials which are artificially structured materials for controlling and manipulating light,sound,and other physical *** systems have fast assembly kinetics and convenient processing procedures,making them ideal for large-scale superlattice *** this perspective,we focus on recent developments in the construction of complex spherical packing superlattices using homogenous soft *** discuss the general mechanism of those formations of supramolecular motifs and provide an overview of the spherical packing superlattices self-assembled by homogenous soft matters based on different volume ***,we outline the potentials of utilizing this approach in constructing novel superlattices as well as its future challenges.

关键词： Soft matter Self-assembly Spherical packing phases Superlattice Bottom-up construction

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嘧啶基双光子荧光染料的设计合成与生物成像

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应用化学 2017年第12期34卷 1450-1456页

作者：周佳倪赟张承武仇兴汉赵燕菲白磊张高宾李林南京工业大学柔性电子重点实验室&先进材料研究院江苏先进生物与化学制造协同创新中心南京210009

生理条件下光学性质稳定的双光子荧光染料在生物成像领域具有广阔的应用前景。我们使用2,4-二甲基-6-羟基嘧啶与4-(N,N-二甲氨基)苯甲醛进行缩合反应,设计合成了具有双光子荧光性质的化合物2-[(1E)-2-[4-(二甲氨基)苯基]乙烯基]-6-甲基-... 详细信息

生理条件下光学性质稳定的双光子荧光染料在生物成像领域具有广阔的应用前景。我们使用2,4-二甲基-6-羟基嘧啶与4-(N,N-二甲氨基)苯甲醛进行缩合反应,设计合成了具有双光子荧光性质的化合物2-[(1E)-2-[4-(二甲氨基)苯基]乙烯基]-6-甲基-4(3H)-嘧啶(NHP)。通过质谱(MS)、核磁共振波谱(NMR)、紫外可见吸收光谱和荧光发射光谱等技术手段表征了其结构,研究了其光物理性质,以及外部环境改变对其发射光谱的影响。结果表明,化合物NHP的最佳吸收峰位于400 nm,最佳发射峰位于540 nm左右,且荧光发射不受金属离子、氨基酸和pH等环境因素的影响。生物实验结果表明,化合物NHP细胞毒性较小,且具有很好的活细胞和果蝇脑组织成像效果,是一种较为理想的双光子荧光生物成像染料。

关键词：嘧啶衍生物双光子成像荧光探针生物成像

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汉中市兴汉新区城市水系综合治理及生态环境提升工程设计

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西北水电 2018年第6期 104-108页

作者：高珍张云中国电建集团西北勘测设计研究院有限公司西安710065

文章介绍了汉中兴汉新区城市水系综合治理及生态环境提升工程。水系综合治理从防洪保安、水系连通、水资源配置等方面进行论述;生态环境提升通过水质净化处理、海绵城市设计、滨河景观打造等措施提升兴元新区的整体形象,建成集生态、绿... 详细信息

文章介绍了汉中兴汉新区城市水系综合治理及生态环境提升工程。水系综合治理从防洪保安、水系连通、水资源配置等方面进行论述;生态环境提升通过水质净化处理、海绵城市设计、滨河景观打造等措施提升兴元新区的整体形象,建成集生态、绿色、文化、旅游,安居为一体的现代化智慧新城。

关键词：兴汉新区水系规划防洪排涝生态环境提升综合治理

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