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Enantioselective Construction of Polycyclic Chromanes through Organocatalytic Sequential Quintuple Reaction via One-Pot Step-Wise Procedure: 《Chinese Journal of Chemistry》2024年第18期2197-2202,共6页Jie Wang Hang Qin Ya-Li Song Fei Cao Zhi-Hao You; supported by the Advanced Talents Incubation Program of Hebei University(521000981411);the National Nature Science Foundation of China(82273792),Science Research Project of Hebei Education Department(QN2021023);the Natural Science Interdisciplinary Research Program of Hebei_University(DXK201913);High-throughput Intelligent Integrated Lung Cancer Targeted Drug Development Innovation Team Project(IT2023c01);the Excellent Youth Research Innovation Team of Hebei University(QNTD202406).; An efficient and highly stereoselective synthetic method to access polycyclic chromanes has been achieved through organocatalyzed one-pot step-wise reactions involving 2-hydroxycinnamaldehydes,2-aminochalcones,and mal...; 关键词：Asymmetric catalysis ORGANOCATALYSIS Cyclization Quintuple reaction POLYCYCLES HETEROCYCLES Chromane One-pot reaction

Boron-, Sulfur- and Nitrogen-Doped Tridecacyclic Aromatic Emitters with Multiple Resonance Effect for Narrowband Red Emission: 《Chinese Journal of Chemistry》2022年第22期2671-2677,共7页Yinuo Wang Kaiyuan Zhang Fan Chen xingdong Wang Qingqing Yang Shumeng Wang Shiyang Shao Lixiang Wang; support from the National Natural Science Foundation of China(Nos.52122309,52073282,21975247 and 51833009);the Open Project of State Key Laboratoryof SupramolecularStructureandMaterials(sklssm2022016);the Youth Innovation Promotion Association of Chinese Academyof Sciences(No.2015180).; Two novel boron(B),sulfur(S),nitrogen(N)-doped polycyclic aromatic hydrocarbon multiple resonance emitters(DBNS and DBNS-tBu)are designed and synthesized for narrowband red emission by embedding two pairs of S and N a...; 关键词：Multipleresonance POLYCYCLES Donor-acceptor systems Sulfur NARROWBAND

All-hydrocarbon,all-conjugated cycloparaphenylene-polycyclic aromatic hydrocarbon host–guest complexes stabilized by CH–πinteractions被引量：1: 《Nano Research》2022年第6期5545-5555,共11页Hyejin Kwon Carson.J.Bruns; supported by the American Chemical Society Petroleum Research Fund Doctoral New Investigator grant(No.59067-DNI7);Further support was provided by the College of Engineering and Applied Science at the University of Colorado Boulder.This work utilized resources from the University of Colorado Boulder Research Computing Group,which is supported by the National Science Foundation(awards ACI-1532235 and ACI-1532236);the University of Colorado Boulder,and Colorado State University.; Polycyclic aromatic hydrocarbons(PAHs)are promising nanocarbon materials with diverse optoelectronic properties,yet they also pose concerning environmental and health risks.Despite the ubiquity of PAHs in the environm...; 关键词：cycloparaphenylenes density functional calculations host−guest systems hydrocarbons POLYCYCLES self-assembly supramolecular chemistry

Asymmetric synthesis of tricyclic 6,5,5-fusedpolycycles by the desymmetric Pauson–Khandreaction: 《Organic Chemistry Frontiers》2022年第6期1680-1685,共6页Qi Teng Dong Chen Chen-Ho Tung Zhenghu Xu; support from the Natural Science Foundation of China and Shandong Province(No.21971149,92156007,ZR2019ZD45,and ZR2020KB005);the Fundamental Research Funds of Shandong University.; A new rhodium(I)–BINAP-catalyzed enantioselective desymmetric Pauson–Khand (PK) reaction of prochiral 1,6-enynes with CO has been developed. Diverse tricyclic 6,5,5-fused bowl type polycycles withthree continuous ch...; 关键词：FUSED symmetric CHIRAL

Stimuli-Responsive Polycycles Based on Hetero-Buckybowl Trithiasumanene: 《Chinese Journal of Chemistry》2021年第12期3413-3420,共8页Wenbo Wang Lijun Feng Xinqiang Hua Chengshan Yuan Xiangfeng Shao; This work was supported by the National Key R&D Program of China(No.2017YFA0204903);the National Natural Science Foundation of China(No.21871119).; Stimuli-responsive molecules are highly desirable in different scenario such as smart materials,bio-imaging,and environment monitoring.Herein,a series of hetero polycycles which show optical response toward chemical s...; 关键词：Responsive materials POLYCYCLES HETEROCYCLES Sensors Trithiasumanene

Recent advances in radical-mediated [2+2+m] annulation of 1,n-enynes: 《Science China Chemistry》2019年第11期1463-1475,共13页Chong-Hui Xu Yang Li Jin-Heng Li Jian-Nan Xiang Wei Deng; supported by the National Natural Science Foundation of China(21625203,21871126);the Jiangxi Province Science and Technology Project(20182BCB22007); 1,n-Enynes are a versatile class of unsaturated hydrocarbons that found broad applications in the synthetic community of natural products,biologically active structures and functional materials.Typical methods for the...; 关键词：RADICAL ANNULATION OXIDANTS 1 n-enynes POLYCYCLES

Tetra-phthalimide end-fused bifluorenylidene: Synthesis and characterization: 《Chinese Chemical Letters》2019年第1期259-262,共4页Debin Xia Fangyuan Zhang Zhigang Liu Linghao Meng Ruiqing Fan Yulin Yang; supported by National Natural Science Foundation of China (No. 51603055); A novel electron acceptor, namely, tetra-phthalimide end-fused bifluorenylidene(3 D-imide) was designed and synthesized. In comparison to its framework analogue 12,12'-bidibenzo[b,h]fluorenylidene(BF-3), the electron ...; 关键词：Bifluorenylidene POLYCYCLES Electron ACCEPTOR TWISTING Three dimensional

Bowl-shaped conjugated polycycles被引量：1: 《Chinese Chemical Letters》2016年第8期1166-1174,1465,共9页Xue-Qing Hou Yan-Tao Sun Lei Liu Shi-Tao Wang Rui-Li Geng Xiang-Feng Shao; the National Natural Science Foundation of China(Nos.21522203,21372111,and 21190034);State Key Laboratory of Applied Organic Chemistry for the financial support; The conjugated polycycles show excellent optical and electrical properties that are suitable for application in various organic electronics.While most of attentions have been paid to polycycles having planar π-conjug...; 关键词：Conjugated polycycle Curved π-system Bucky bowl Heteroatom doping Electronic structure

Preparation of Polyfunctionally Substituted Pyridine-2(1<i>H</i>)-Thione Derivatives as Precursors to Bicycles and Polycycles被引量：1: 《International Journal of Organic Chemistry》2014年第5期319-330,共12页Fathi A. Abu-Shanab Sayed A. S. Mousa Sherif M. Sherif Mohamed I. Hassan; Reaction of acetylacetone with 1 mole of dimethylformamide dimethyl acetal (DMFDMA) affords enamine 2a which reacts with cyanothioacetamide to give pyridinethione 3a. Pyridinethione 3a reacts with methyl iodide, halog...; 关键词：Acetyl Acetone DMFDMA MALONONITRILE Dimmer BIPYRIDYL 5-Acetylpyridinethione

Linear estimation and distribution of the limit cycles bifurcated from a kind of degenerate polycycles: 《Science China Mathematics》2007年第3期334-344,共11页Li-qin ZHAO Department of Mathematics, Beijing Normal University, Beijing 100875, China; This work was supported by the National Natural Science Foundation of China(Grant No.10671020); In this paper, we investigate the number and the distribution of the limit cycles bifurcated from a kind of degenerate planar polycycles through three singular points: a saddle-node P 0, a fine saddle P 1 with finite ...; 关键词：degenerate polycycle CYCLICITY finitely-smooth normal form transition map 34C05 34C23 58F14

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