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Synthesis and Characterization of Novel Acetohydroxyacid Synthase Inhibitors

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Chemical Research in Chinese Universities 2006年第5期22卷 593-597页

作者： GAO Fei-fei li yao-xian ZHANG Suo-qin ZHANG Guang-liang College of Chemistry Jilin University Changchun 130021 P. R. China

A novel kind of acetohydroxyacid synthase（AHAS） inhibitors, arylsulfonylaminocarbonyl-2-thiohydantoins, was synthesized based on biorational design. The structures of these compounds were confirmed by IR, MS, NMR, and elemental analysis. The results of the preliminary activity tests indicate that most of the arylsulfonylamidecarbonyl-5- methyl-2-thiohydantoins have a higher biological activity than those without 5-methyl substituent.

关键词： Sulfonylaminocarbonyl-2-thiohydantoin Sulfonylurea Acetohydroxyacid synthase, Herbicidal activity

Synthesis and Characterization of Novel-4-Methyl-3-isoxazolidinone Derivatives

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Chemical Research in Chinese Universities 2006年第6期22卷 717-720页

作者： GAO Fei-fei ZHANG Guang-liang ZHENG liang-yu li yao-xian ZHANG Suo-qin College of Chemistry Ministry of Education Jilin University Changchun 130021 P. R. China Key Lab for Molecular Enzymology and Engineering Ministry of Education Jilin University Changchun 130021 P. R. China

A novel type of aeetohydrexyacid synthase inhibitors, 4-methyl-3-isoxazolidinone derivatives of sulfonylurea, was designed and synthesized. The structures of these compounds were confirmed by using MS, NMR, and elemen... 详细信息

关键词： 4-Methyl-3-isoxazolidinone Sulfonylureas Acetohydroxyacid synthase Herbicidal activity

Novel Catalytic Method for Synthesis of Glycosyl Esters by Combining PTC with DMAP

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Chemical Research in Chinese Universities 2007年第4期23卷 426-429页

作者： YANG Song-tao ZHANG Suo-qin ZHANG Guang-liang WANG Xiao-ming li yao-xian College of Chemistry Jilin University Changchun 130021 P. R. China

This article presents a novel catalytic method by combining phase-transfer catalyst, benzyltriethylammonium chloride, with 4-dimethylaminopyridine for the syntheses of glycosyl esters from substituted phenoxyaeetie acids and the peracetate of α-D-l-bromosugars to produee eight novel β-glyeosyl esters in high yields. The struetures of the syn-thesized eompounds were established by IR, MS, ^1H NMR, and ^13C NMR speetra and elemental analyses.

关键词： Glycosyl ester Substituted phenoxyacetic acid Phase-transfer catalyst 4-Dimethylaminopyridine

Transferring CdTe Nanoparticles from liquid Phase to Polyvinylpyrrolidone Nanofibers by Electrospinning and Detecting Its Photoluminescence Property

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Chemical Research in Chinese Universities 2008年第4期24卷 459-463页

作者： WANG Shu-gang YANG Qing-biao BAI Jie SONG Yan ZHANG Chao-qun li yao-xian Department of Organic Chemistry College of Chemistry Jilin University Changchun 130021 P R. China

The major aim of this work was to synthesize thio-stabilized CdTe nanoparticles（NPs） in an aqueous solution, which was then enwrapped with cetyltrimethylammonium bromide（CTAB）, and finally transferred to the polyvinylpyrrolidone（PVP） matrix by electrospinning. The PVP nanofibers containing CdTe NPs were characterized by scanning electron microscopy（SEM） and transmission electron microscopy（TEM）, to observe the morphology of the nanofibers and the distribution of CdTe NPs. The selective area electronic diffraction（SAED） pattern verified that CdTe NPs were cubic lattice. The photoluminescence（PL） spectrum indicated that CdTe NPs existed in an optical style in PVP nanofibers. Moreover, X-ray photoelectron spectra（XPS） revealed that thiol-stabilized CdTe NPs were enwrapped by CTAB, and PVP acted as a dispersant in the process of electrospinning.

关键词： CTAB Electrospinning Nanofiber Nanoparticle Photoluminescence

Facile Method to Prepare Metal Sulfide(Ag_2S,CuS,PbS) Nanoparticles Grown on Surface of Polyacrylonitrile Nanofibre and Their Optical Properties

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Chemical Research in Chinese Universities 2012年第3期28卷 534-538页

作者： ZHANG Chao-qun SUN Jiao WANG Wei YANG Qing-biao li yao-xian DU Jian-shi China-Japan Union Hospital of Jilin University Changchun 130031P.R.China College of Chemistry Jilin UniversityChangchun 130012P.R.China School of Nursing Jilin UniversityChangchun 130031P.R.China

Polyacrylonitrile-metal sulfide nanocomposites with metal sulfide（Ag2S, CuS, PbS） nanoparticles homo- geneously dispersed on the polyacrylonitrile（PAN） nanofibre were synthesized by means of electrospinning techno- logy combined with gas-solid reaction. A series of experiments was performed to characterize the morphology varia- tion and distribution of the nanocrystalline. The result shows that the concentration of metal salt aqueous solution affects the size and morphology of metal sulfide nanoparticles during the chelating process. Further more, these metal ions nanoparticles were attached to the surface of the nanofibre homogeneously through chelating effect which will be propitious to prevent nanoparticles from aggregation. These results suggest that the method reported here is ex- tremely effective for synthesizing PAN-metal sulfide nanocomposites which have good visible light photocatalytic activity. Further more, this method could be extended to prepare other PAN-metal halides nanocomposites, too.

关键词： Nanofibre Electrospinning Metal sulfde Visible light catalytic

Fabrication of Fluorescent Porphyrin/Polystyrene Composite Nanospheres by Electrospinning

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Chemical Research in Chinese Universities 2010年第1期26卷 148-151页

作者： SONG Yan ZHAN Nai-qian YU Miao YANG Qing-biao ZHANG Chao-qun li yao-xian College of Chemistry Jilin University Changchun 130021 P. R. China School of Chemical and Material Engineering Jilin Institute of Chemical Techology Jilin 132022 P. R. China

Fluorescent polystyrene（PS）/porphyrin（TPPA） composite nanospheres were successfully fabricated by electrospinning. The SEM images clearly show that owing to adding TPPA in PS, the averaged diameter of the composite nanospheres became smaller, from 1500 to 580 nm. Fourier-transform infrared（FTIR） spectra determined the chemical composition of the resulting PS/TPPA composite nanospheres. The photoluminescent（PL） spectral analysis indicates that the peak position of the composite nanospheres in either solid state or water is identical to that of pure TPPA, at about 652 nm, and is still unchangeable when they are left for at least 20 d, indicating the stable photoluminescent property of the fluorescent composite nanospheres.

关键词： Polystyrene Porphyrin Fluorescent Composite nanosphere Electrospinning

Fabrication of Poly(4-vinylpyridine) Nanofiber and Fluorescent Poly(4-vinylpyridine)/Porphyrin Nanofiber by Electrospinning

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Chemical Research in Chinese Universities 2008年第6期24卷 722-725页

作者： SONG Yan ZHAN Nai-qian YU Miao YANG Qing-biao ZHANG Chao-qun WANG Heng-guo li yao-xian College of Chemistry Jilin University Changehun 130021 P. R. China School of Chemical and Material Engineering Jilin Institute of Chemical Teehology Jilin 132022 P R. China

Poly（4-vinylpyridine）（P4-VP） nanofiber and fluoresent poly（4-vinylpyridine）/porphyrin（P4-VP/TPPA） nanofiber were respectively prepared by electrospinning. The effect of the concentration of P4-VP/dimethylformamide （DMF） electrospinning solutions on the morphology of P4-VP nanofiber was investigated and it was found that the average diameter of the nanofiber of P4-VP/DMF increased with the increase of the concentration of the spinning solution. After the addition of TPPA to the P4-VP/DMF spinning solution, the diameter of P4-VP/TPPA nanofiber became even due to the increase of the conductivity of the P4-VP/DMF-TPPA solution. The photoluminescent（PL） spectral analysis indicates that the emission peak position of P4-VP/TPPA nanofiber is almost the same as that of pure TPPA at about 650 nm without peak shift, and when it was stored for 20 days, the emission peak of P4-VP/TPPA nanofiber is also at 650 nm, indicating that the fluorescent property of P4-VP/TPPA nanofiber is stable. Fourier-transform iufrared（FTIR） spectrum confirms the chemical composition of the resulting P4-VP/TPPA composite nanofiber.

关键词： Poly(4-vinylpyridine) Porphyrin Nanofiber Electrospinning

Chemoselective Catalytic Hydrogenation of α,β-Unsaturated Ketones and α,β-Unsaturated Carboxylic Esters

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Chemical Research in Chinese Universities 1998年第2期14卷 17-22页

作者： ZHANG Jing-wen ZHAO Jian-zhang ZHANG Xiao-long JIANG Yu-lin MA Xiu-li SUN Yun-xiu JIANG Wen-pu li yao-xian XU Zhi-luo Department of Chemistry Jilin UniversityChangchun130023

The effect of catalysts P-2 00-Ni(Nickel boride) and P-2 00-Ni-M(M: Co, Fe, Cu, Sn), prepared by adopting a modified recipe, on the chemoselective hydrogenation of carbon carbon double bonds in α,β- unsaturated ketones, and the activity of catalysts P-1.80-Ni, P-2 00-Ni or P-1.80(2 00) -Ni-M(M: Pd, Co, Cu) in the selective hydrogenation of carbon carbon double bonds in α,β-unsaturated carboxylic esters, were investigated systematically. According to the experimental results, the selectivities of these catalysts toward the hydrogenation of the carbon carbon double bonds of α,β-unsaturated keones or α,β-unsaturated carboxylic esters are 96%—100% or 100%, respectively.

关键词： α β-Unsaturated ketone Nickel boride α β-Unsaturated carboxylic ester

Synthesis of Enantiom eric Planar Square Ni^(2+) -and Cu^(2+) -Schiff Base Com plexes

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Chemical Research in Chinese Universities 1999年第3期15卷 248-252页

作者： ZHAO Jian-zhang WANG Shu-gang WANG Xu liU Ju-zheng QIAO Xiao-guang li yao-xian WANG Hua Department of Chemistry Jilin UniversityChangchun 130023P.R.China Third Clinical College&China Japan Union Hospital of Norman Bethune Unviersity of Me dical Sciences Changchun 130023P.R.China

Enantiomeric four chelated planar square schiff base Cu 2+ and Ni 2+ complexes were synthesized using ( 1R,trans ) and ( 1S,trans) N,N  bis(2 hydroxyphenyl methylene) 1,2 diaminocyclohexane. The chirality could not be shown by usual UV Vis spectra. The intrinsic chiral difference of the enantiomeric complexes can be displayed by circular dichroism(CD) spectra. The Cotton effect of every polarlight sensitive absorption of one enantiomer will be the opposite of that of the other enantiomer. It was found that no tetrahedron form exists for Ni 2+ complexes, which was determined with UV Vis spectra and Electron Paramagnetic Resonance(EPR) measures.

关键词： Chiral transition metal schiff base complex Circular dichroism(CD) Enantiomeric