Chinese Journal of Chemistry

Cover image for Vol. 33 Issue 1

Early View (Online Version of Record published before inclusion in an issue)

Editors: Guozhen Ji, Shengming Ma

Online ISSN: 1614-7065

Associated Title(s): Chemistry - A European Journal, Chemistry – An Asian Journal, Israel Journal of Chemistry, The Chemical Record

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  1. 1 - 20
  1. Full Papers

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      Synthesis of Coumarin-Pillar[5]arene as a Selective Fluorescent Probe for Methyl-Parathion

      Fan Zhang, Xianliang Cao, Demei Tian and Haibing Li

      Article first published online: 14 JAN 2015 | DOI: 10.1002/cjoc.201400675

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      A novel coumarin-pillar[5]arene derivative (P5C10) was prepared. Fluorescence spectroscopy indicates that P5C10 shows good selectivity towards methyl-parathion. A combination of NMR spectra, MALDI-TOF spectra and computational calculations reveals the formation of a host-guest complex driven by π-π stacking interactions.

  2. Communications

    1. Highly Enantioselective Direct Asymmetric Aldol Reaction Catalyzed by 4,5-Methano-L-proline

      Yukun Zhang, Jun Zhu, Na Yu and Han Yu

      Article first published online: 14 JAN 2015 | DOI: 10.1002/cjoc.201400732

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      The 4,5-methano-L-proline was used as chiral organocatalysts in direct asymmetric aldol reactions. Under the optimal conditions, excellent enantioselectivities (up to 99% ee) were obtained with high chemical yields (up to 95%) for a series of aldehydes using only 5 mol% catalyst loading.

  3. Full Papers

    1. Influence of Metallic Modification on Ethylbenzene Dealkylation over ZSM-5 Zeolites

      Chao Hu, Junhui Li, Wenzhi Jia, Min Liu, Zhixian Hao and Zhirong Zhu

      Article first published online: 14 JAN 2015 | DOI: 10.1002/cjoc.201400677

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      Over metal-modified HZSM-5, ethylbenzene was converted to benzene and ethylene owing to dealkylation, and ethylene was converted to ethane through catalytic hydrogenation. Ethylbenzene conversion obviously increased over bifunctional catalyst.

    2. Interaction of Plasma Proteins with Tri-quaternary Ammonium Salt Cationic Surfactant Studied by QCM-D

      Man Xi and Baoyan Zhang

      Article first published online: 14 JAN 2015 | DOI: 10.1002/cjoc.201400690

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      Au-COOH-S surface inhibited the adsorption of LYZ, maintained the adsorption balance of BSA, and induced the adsorption of Fib.

    3. In Situ Analysis for Herbal Pieces of Aconitum Plants by Using Direct Analysis in Real Time Mass Spectrometry

      Feng Zhou, Hongbin Zhu, Shu Liu, Kang Ma, Fengrui Song and Zhiqiang Liu

      Article first published online: 14 JAN 2015 | DOI: 10.1002/cjoc.201400692

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      Aconitum plants are usually used in strain and contusion treatment in clinic use. Based on DART/MS, this study developed an analytical method to rapidly identify both the types of Aconitum preparata and their quality.

    4. Primer Extension Reaction Assays for Incorporation of Deoxynucleotide Analogue into DNA

      Xilong Wang, Xun Chen, Yonghui Liu and Jin Zhu

      Article first published online: 14 JAN 2015 | DOI: 10.1002/cjoc.201400731

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      Primer extension reactions are commonly used for the assay of incorporation of deoxynucleotide analogues into DNA. Herein we report on the design of two novel assay protocols that utilize a dideoxynucleotide-terminated template strand and a phosphorothiolate-modified deoxynucleotide-terminated template strand without relying on radiolabeling, fluorescence reporter labeling, or removal of specific deoxynucleotide triphosphate in the reaction mixture.

    5. Synthesis and Catalytic Activity of a Grubbs-Hoveyda Pre-catalyst Having a Trimeric Resting State

      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.

    6. Effect of Organo-Modified Nanosepiolite on Fire Behaviors and Mechanical Performance of Polypropylene Composites

      Junhao Zhang, Sergio de Juan, Antonio Esteban-Cubillo, Julio Santarén and De-Yi Wang

      Article first published online: 14 JAN 2015 | DOI: 10.1002/cjoc.201400828

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      The synergistic flame retardancy of Clay20 in PP/MB matrix significantly improved the fire safety, which was attributed to the improvement in forming a reinforced protective barrier on the surface of samples. Meanwhile, Young's modulus and impact strength of the composites were increased because the rigid needlelike Clay20 in PP composites directly enhanced the stiffness of flame retardant composites.

  4. Notes

    1. Synthesis and Luminescence of Eu-N2,N6-Bis(2-hydroxyethyl)pyridine-2,6-dicarboxamide Complexes Containing Mesoporous Material

      Zheng Li, Siyu Zuo, Jingjian Zhou, Xiao Yuan, Yishan Song and Hua Zhang

      Article first published online: 14 JAN 2015 | DOI: 10.1002/cjoc.201400714

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      Ligand N2,N6-bis(2-hydroxyethyl)pyridine-2,6-dicarboxamide (L=BHPC) was synthesized and applied to construct lanthanide-based mesoporous material Eu-L-MCM-41. In the structure of resulting Eu-L-MCM-41, Eu3+ was chelated by BHPC, and the Eu-L complexes were anchored into the forming MCM-41 host by the reaction between the hydroxyl group from ligand and active Si-OH from MCM-41 host. Eu-L-MCM-41 exhibits characteristic luminescence of Eu3+.

  5. Communications

    1. Transition Metal Free Chemoselective Reduction of α,β-Unsaturated Ketones to Saturated Ketones Using Tosyl Hydrazide as a Hydrogen Donor

      Yarabally R Girish, Kanchipura R Raghavendra, Dasappa Nagaraja, Kothanahally S Sharath Kumar and Sheena Shashikanth

      Article first published online: 14 JAN 2015 | DOI: 10.1002/cjoc.201400684

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      An efficient, inexpensive and simple method for the reduction of various α,β-unsaturated ketones to corresponding saturated ketones using tosyl hydrazide as a hydrogen donor in DMF using calcium oxide powder as base is developed.

  6. Full Papers

    1. An Approach towards Synthesis of Nanoarchitectured LiNi1/3Co1/3Mn1/3O2 Cathode Material for Lithium Ion Batteries

      Weibo Hua, Yanjie Wang, Yanjun Zhong, Guoping Wang, Benhe Zhong, Baizeng Fang, Xiaodong Guo, Shixuan Liao and Haijiang Wang

      Article first published online: 14 JAN 2015 | DOI: 10.1002/cjoc.201400551

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      A vacuum distillation-crystallisation-modified coprecipitation process for synthesizing nanoarchitectured LiNi1/3Co1/3Mn1/3O2 cathode material is proposed, and the material prepared by this method shows superior electrochemical properties.

    2. Novel Non-Coplanar and Tertbutyl-Substituted Polyimides: Solubility, Optical, Thermal and Dielectric Properties

      Chanjuan Liu, Xianglin Pei, Xiaohua Huang, Chun Wei and Xiaoyi Sun

      Article first published online: 14 JAN 2015 | DOI: 10.1002/cjoc.201400587

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      A series of highly soluble and transparent aromatic polyimides were designed and synthesized from a novel diamine TADBP containing tertbutyl and 4-tertbutylphenyl side groups and five dianhydrides.

    3. Sensitive Determination of Five Priority Haloacetic Acids by Electromembrane Extraction with Capillary Electrophoresis

      Xiaoli Zhang, Haitao Zhang, Yan Liu, Lin Guo, Jiannong Ye and Qingcui Chu

      Article first published online: 14 JAN 2015 | DOI: 10.1002/cjoc.201400633

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      A method for sensitive determination of five priority haloacetic acids in drinking water has been developed for the first time based on electromembrane extraction (EME) prior to CZE with capacitively coupled contactless conductivity detection (CZE- C4D). Under the optimum conditions, five haloacetic acids (monochloroacetic acid, dichloroacetic acid, trichloroacetic acid, monobromoacetic acid, and dibromoacetic acid) could be well separated from other components coexisting in water samples within 23 min, exhibiting a linear calibration over two orders of magnitude (r>0.994); the LODs were in the range of 0.17–0.61 ng/mL and the enrichment factor could be up to 671-fold. This approach offers an attractive alternative for drinking water analysis.

    4. Fabrication of Pyrene and Tetraphenylethylene Nanostructures by a Hydrolysis-Assisted Co-Assembly

      Tianxiang Wang, Haisheng Wang, Lingbo Xing, Wenbo Zhang and Changyou Gao

      Article first published online: 14 JAN 2015 | DOI: 10.1002/cjoc.201400673

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      Different nanostructures composed of 1-pyrenecarboxaldehyde (Py-CHO) and tetraphenylethylenecarboxaldehyde (TPE-CHO) were obtained by decomposition-assembly of poly(allylamine hydrochloride) (PAH)-g-Py-g-TPE at low pH, which was synthesized by grafting Py-CHO and TPE-CHO to PAH via a Schiff base reaction. The PAH-g-Py-g-TPE micelles were transformed into nanomaterials including nanoparticles (NPs), nanorods (NRs), nanotubes (NTs) and nanoribbons (NBs) at low pH, which emitted fluorescence with colors different from their counterpart NTs and NPs formed from the parent Py-CHO and TPE-CHO molecules.

    5. Towards Reaction Control: An Expeditious Access to Racemic 5-Substituted Tetramates and 5-Substituted Tetramic Acids from Malimides

      Pei-Qiang Huang, Wei Ou and Jian-Liang Ye

      Article first published online: 12 DEC 2014 | DOI: 10.1002/cjoc.201400762

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      A versatile and divergent two-step transformation of malimides to racemic tetramates and tetramic acids is described. The method consists of Grignard reagent addition with malimides, and concentrated HCl-promoted chemoselective transformations of the latter.

    6. Thermal and pH Dual Responsive Copolymer and Silver Nanoparticle Composite for Catalytic Application

      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.

    7. Preparation of Thermosensitive Hollow Imprinted Microspheres via Combining Distillation Precipitation Polymerization and Thiol-ene Click Chemistry

      Cong Guo, Bing Wang and Juanjuan Shan

      Article first published online: 12 DEC 2014 | DOI: 10.1002/cjoc.201400693

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      The thermosensitive hollow imprinted microspheres were prepared via combining distillation precipitation polymerization and thiol-ene click chemistry. The microspheres showed excellent temperature-sensitive and controlled release properties in aqueous.

    8. Combination of Solid-Phase Micro-Extraction and Direct Analysis in Real Time-Fourier Transform Ion Cyclotron Resonance Mass Spectrometry for Sensitive and Rapid Analysis of 15 Phthalate Plasticizers in Beverages

      Mengxi Wu, Haoyang Wang, Guoqing Dong, Brian D. Musselman, Charles C. Liu and Yinlong Guo

      Article first published online: 9 DEC 2014 | DOI: 10.1002/cjoc.201400564

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      A method for rapid identification and quantification of 15 phthalate plasticizers in beverages was developed. By a combined solid-phase micro-extraction (SPME) and direct analysis in real time mass spectrometry (DART-MS) approach, phthalates at sub-ng·mL−1 levels can be qualitatively and quantitatively analyzed in a short time. The use of ultrahigh-resolving power and the accurate mass measurement capacity naturally provided by Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS) minimizes the matrix interferences and thus enables the evaluation of phthalates in a complex matrix without extensive sample handlings or preparations. This rapid and easy-to-use SPME-DART-FT-ICR-MS method provided a relatively high-throughput and powerful analytical approach for quick testing and screening phthalates in beverages and water samples to ensure food safety.

    9. A Convenient Preparation of Fluorinating Reagent F-TEDA Bearing Bisphenylsulfonylimide Counterion and Its Fluorination to Oxindoles

      Wenhua Zhu, Xiaohui Hu, Fajie Wang, Xianjin Yang and Xinyan Wu

      Article first published online: 9 DEC 2014 | DOI: 10.1002/cjoc.201400680

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      A unique and practical route for the preparation of F-TEDA-N(SO2Ph)2, a kind of fluorinating reagent from NFSI was realized in high yield.

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