Chinese Journal of Chemistry

Cover image for Vol. 33 Issue 4

April, 2015

Volume 33, Issue 4

Pages 393–494

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Contents
    4. Communications
    5. Full Papers
    1. You have free access to this content
      Cover Picture: Transfer Hydrogenation of Ethyl Levulinate to γ-Valerolactone Catalyzed by Iron Complexes (Chin. J. Chem. 4/2015) (page 393)

      Nan Dai, Rui Shang, Mingchen Fu and Yao Fu

      Article first published online: 13 APR 2015 | DOI: 10.1002/cjoc.201590009

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      The cover picture shows a new and green transformation path for the synthesis of γ-valerolactone from biomass-derived ethyl levulinate, which is realized by iron-catalyzed transfer hydrogenation. γ-Valerolactone is a valuable chemical, which can be used as liquid fuel, food additive, solvent and also intermediate for organic synthesis. By utilizing Casey's catalyst and cheap isopropanol as hydrogen source, γ-valerolactone can be generated in 95% yield. Addition of catalytic amount of base is important to achieve good yield. More details are discussed in the communication by Fu et al. on page 405–408.

  2. Contents

    1. Top of page
    2. Cover Picture
    3. Contents
    4. Communications
    5. Full Papers
    1. Contents: Chin. J. Chem. 4/2015 (pages 395–399)

      Article first published online: 13 APR 2015 | DOI: 10.1002/cjoc.201590010

  3. Communications

    1. Top of page
    2. Cover Picture
    3. Contents
    4. Communications
    5. Full Papers
    1. One-Pot Synthesis of Aliphatic Nitro Compounds by Michael/retro-Claisen Fragmentation Domino Reaction (pages 401–404)

      Wei Zhang, Yanjing Wang, Cuibing Bai, Jialong Wen and Naixing Wang

      Article first published online: 3 FEB 2015 | DOI: 10.1002/cjoc.201400836

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      A novel and concise method for the direct synthesis of γ-nitro ketones and 1,3-dinitro compounds has been developed. It is the first time to report a domino reaction to synthesize aliphatic nitro compounds via domino Michael/retro-Claisen fragmentation reaction.

    2. Transfer Hydrogenation of Ethyl Levulinate to γ-Valerolactone Catalyzed by Iron Complexes (pages 405–408)

      Nan Dai, Rui Shang, Mingchen Fu and Yao Fu

      Article first published online: 30 MAR 2015 | DOI: 10.1002/cjoc.201500035

      Thumbnail image of graphical abstract

      The conversion of biomass-derived ethyl levulinate to γ-valerolactone was realized efficiently by utilizing Casey's catalyst and isopropanol via catalytic transfer hydrogenation.

    3. α-Chymotrypsin-Catalyzed Synthesis of Bis(indolyl)alkanes in Water (pages 409–412)

      Dazhao Sun, Guofang Jiang, Zongbo Xie and Zhanggao Le

      Article first published online: 30 MAR 2015 | DOI: 10.1002/cjoc.201400892

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      A novel methodology for the synthesis of bis(indolyl)methanes by the reaction of aromatic aldehydes and indole in water has been developed, and a series of desired products were obtained in moderate to excellent yields (from 65% to 97%) using 1.2 mg/mL α-chymotrypsin as biocatalyst.

    4. Supramolecular Self-Assembly of Cucurbit[6]uil and Ionic Liquid in Non-aqueous System (pages 413–417)

      Xuzhuo Sun, Bo Li, Haibo Zhang and Xiaohai Zhou

      Article first published online: 30 MAR 2015 | DOI: 10.1002/cjoc.201400653

      Thumbnail image of graphical abstract

      A novel pseudorotaxane was synthesized by directly mixing CB[n] with [C4mim]Br, which form 3D structure by aid of hydrogen bonds. The crystal structure demonstrated that CB[6] and [C4mim]Br formed a complex with the ratio 1:1. Besides the bound guest, there were two free ones in the pseudorotaxane as the solvent.

  4. Full Papers

    1. Top of page
    2. Cover Picture
    3. Contents
    4. Communications
    5. Full Papers
    1. Enantioselective Synthesis of N-Phenyl-dihydropyrano[2,3-c]pyrazoles via Cascade Michael Addition/Thorpe-Ziegler Type Cyclization Catalyzed by a Chiral Squaramide (pages 418–424)

      Junhua Li and Daming Du

      Article first published online: 3 FEB 2015 | DOI: 10.1002/cjoc.201400829

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      Enantioselective synthesis of biologically active dihydropyrano[2,3-c]pyrazoles has been achieved through a squaramide-catalysed Michael addition/Thorpe-Ziegler type cyclization cascade reaction between arylidenepyrazolones and malononitrile. A series of optically active dihydropyano[2,3-c]pyrazoles were obtained in excellent yields (up to 99%) and moderate to good enantioselectivities (up to 79% ee) under mild reaction conditions.

    2. Fluorescent Recognition of Small Organic Molecules Based on Supramolecular Aggregation/Deaggregation of Planar Cu(II) Coordination Complex (pages 425–430)

      Liang Hao, Tong Zhang, Ge Chang and Hui Li

      Article first published online: 9 MAR 2015 | DOI: 10.1002/cjoc.201400797

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      The fluorescent properties of a new planar Cu(II) coordination complex with conjugated, rigid and planar ligand in different organic solvents have been studied based on X-ray single-crystal diffraction analysis and the viewpoint of controlling supramolecular aggregation/deaggregation through π-π stacking in different organic solvents.

    3. Synthesis of Pyrene-based Planar Conjugated Polymers and the Regioisomers by Intramolecular Cyclization (pages 431–440)

      Xiaoyan Zhu, Yonggang Wu, Lina Zhou, Yuan Wang, Hongchi Zhao, Baoxiang Gao and Xinwu Ba

      Article first published online: 3 FEB 2015 | DOI: 10.1002/cjoc.201400793

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      Ladder polymers and model compounds were obtained through intramolecular cyclization reaction in the presence of acid from the precursors. The planar polymers and model compounds show untypical UV and PL properties for a rigid, planar, one-dimensional π-system. The regioisomers in intramolecular cyclization reaction can be clearly identified from syn- and anti-structures.

    4. Synthesis and Catalytic Activity of a Grubbs-Hoveyda Pre-catalyst Having a Trimeric Resting State (pages 441–445)

      Guiyan Liu, Bin Wu and Jianhui Wang

      Article first published online: 14 JAN 2015 | DOI: 10.1002/cjoc.201400765

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      A Grubbs-Hoveyda pre-catalyst having a trimeric resting state is presented. It was characterized by NMR, HRMS and elemental analysis. Catalytic study for ring-closing metathesis was evaluated. Highly activity for RCM of many substrates was showed.

    5. CdTe-paper-based Visual Sensor for Detecting Methyl Viologen (pages 446–450)

      Yingchun Su, Shenghua Ma, Kunpeng Jiang and Xiaojun Han

      Article first published online: 9 MAR 2015 | DOI: 10.1002/cjoc.201400715

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      The fluorescence microscope images of different methyl viologen concentration (a, 0 µmol/L ; b, 38.89 µmol/L; c, 388.86 µmol/L and d, 3.89 mmol/L) droped onto 50% CdTe-paper-based substrates; e) intensity of the dotted plots from image a to d. The scale bar is 1000 µm.

    6. Analysis and Identification of the Chemical Constituents of Ding-Zhi-Xiao-Wan Prescription by HPLC-IT-MSn and HPLC-Q-TOF-MS (pages 451–462)

      Shiyao Tang, Shu Liu, Zhiqiang Liu, Fengrui Song and Shuying Liu

      Article first published online: 3 FEB 2015 | DOI: 10.1002/cjoc.201400789

      Thumbnail image of graphical abstract

      A sequential extraction project, an HPLC-IT-MSn and an HPLC-Q-TOF-MS method were successfully established to separate and identify the constituents of DZXW.

    7. Optically Active Helical Poly[(S)-3-vinyl-2,2′-dihydroxy-1,1′-binaphthyl]: New Ligand for Asymmetric Addition of Diethylzinc to Aryl Aldehyde (pages 463–466)

      Yehui Chen, Guochang Qin, Liwen Yang and Nianfa Yang

      Article first published online: 3 FEB 2015 | DOI: 10.1002/cjoc.201400819

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      The application of helical poly[(S)-3-vinyl-2,2′-dihydroxy-1,1′-binaphthyl] (L*) in the asymmetric addition of diethylzinc to aldehydes has been studied. The catalytic system employing 10 mol% of L* and 150 mol% of Ti(OiPr)4 was found to promote the addition of diethylzinc to a wide range of aromatic aldehydes, giving up to 99% enantiomeric excess (ee) and up to 93% yield of the corresponding secondary alcohol at 0°C. The chiral polymer can be easily recovered and reused without loss of catalytic activity as well as enantioselectivity.

    8. Thermal and pH Dual Responsive Copolymer and Silver Nanoparticle Composite for Catalytic Application (pages 467–472)

      Luqman Ali Shah, Wulian Chen, Mohammad Siddiq, Jianhua Hu, Angang Dong and Dong Yang

      Article first published online: 12 DEC 2014 | DOI: 10.1002/cjoc.201400751

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      Thermal and pH dual responsive P(NIPAM-co-VI) copolymer was used as carriers to load Ag nanoparticles for the first time. The nanoparticles could be stably dispersed at all pH values, and were favorable to be used as a catalyst at a wide pH range, but more efficient at low pH.

    9. Efficient Synthesis of Triarylamines Catalyzed by Copper(I) Diazabutadiene Complexes (pages 473–478)

      Yuhua Liu and Lianming Yang

      Article first published online: 9 MAR 2015 | DOI: 10.1002/cjoc.201400787

      Thumbnail image of graphical abstract

      Cu(I)-(DAB-R) complexes were synthesized and used as catalyst for N-arylation. Cu(I)Cl(DAB-iPP)2 was found to be an efficient catalyst system for N-arylation of diarylamines and anilines with aryl halides, affording the desired products in good to excellent yields.

    10. Hypervalent Iodine(III)-Mediated Benzannulation of Enamines with Alkynes: an Efficient Synthesis of Substituted Aminonaphthoic Acid Derivatives (pages 479–485)

      Peng Gao, Mingjin Fan, Zijing Bai and Yunyang Wei

      Article first published online: 9 MAR 2015 | DOI: 10.1002/cjoc.201400802

      Thumbnail image of graphical abstract

      An intermolecular two C[BOND]C bond formation procedure for the synthesis of carbocycles mediated by hypervalent iodine(III) reagents was developed.

    11. Synthesis and Bioactivity of New Chalcone Derivatives as Potential Tyrosinase Activator Based on the Click Chemistry (pages 486–494)

      Chao Niu, Gen Li, Adila Tuerxuntayi and Haji A. Aisa

      Article first published online: 30 MAR 2015 | DOI: 10.1002/cjoc.201400820

      Thumbnail image of graphical abstract

      A series of new chalcone derivatives which showed activator effect on tyrisinase were synthesized for the first time. Several compounds exhibited better activities than the control drug. Aftert that, the SAR of the compounds was summarized. Besides, several crystal structures of the compounds were got.

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