Chinese Journal of Chemistry

Cover image for Chinese Journal of Chemistry

February, 2009

Volume 27, Issue 2

Pages 221–436

  1. Communication

    1. Top of page
    2. Communication
    3. Full Papers
    4. Notes
    1. Nickel(II) Complexes Bearing NH2CH2CH2CH2NH2 and o-C6H4(NH2)2 Ligands: Synthesis, Structures and Their Ethylene Polymerization Behavior (pages 221–226)

      Xiaoming LU, Zhen WANG and Man LIU

      Version of Record online: 3 MAR 2009 | DOI: 10.1002/cjoc.200990036

      Two nickel complexes [Ni(NH2CH2CH2CH2NH2)3]Cl2 (1) and [Ni(C6H4N2H4)2Cl2] (2) have been obtained and characterized by IR and single crystal X-ray diffraction analysis. In complex 1, the nickel atom was in a chiral pseudo-octahedral [NiN6] geometry environment, which was coordinated by three 1,3-propylenediamine to form three six-membered rings. However in complex 2, besides connected with two o-phenylenediamine through four Ni–N bonds to form two five-membered rings, the nickel center was coordinated by two Cl to form trans-Ni-Cl2, which was different from general reported diimine nickel complexes.

  2. Full Papers

    1. Top of page
    2. Communication
    3. Full Papers
    4. Notes
    1. Effect of S Replacement on the Mechanism of Unimolecular Reactions for Ground-state Thioacetic Acid: A Theoretical Study (pages 227–234)

      Aimei LU, Ming KE, Wanjian DING and Ruozhuang LIU

      Version of Record online: 3 MAR 2009 | DOI: 10.1002/cjoc.200990037

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      The potential energy surfaces of nine molecular reactions for the ground-state CH3C(O)SH and CH3C(S)OH have been investigated with a B3LYP method in conjugation with 6-31G∗∗, cc-pVDZ, aug-cc-pVDZ, and cc-pVTZ basis sets. By comparison with CH3C(O)OH, the reactivity difference in the unimolecular decomposition mechanisms between sulfur-containing and oxygen-containing compounds is investigated.

    2. Investigation of Vapor-Liquid Nucleation for Associating Fluids by Density Gradient Theory (pages 235–240)

      Dong FU and Jianmin LIU

      Version of Record online: 3 MAR 2009 | DOI: 10.1002/cjoc.200990038

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      An equation of state (EOS) applicable to the nucleation properties of associating fluids was established. With the molecular parameters regressed from the experimental data of vapor pressures and liquid densities as input, the nucleation rates of 8 pure associating fluids were investigated. The present figure shows the nucleation rates for water predicted from density gradient theory (DGT) and the comparison with experimental data and density functional theory (DFT) results. One finds from this figure that the DFT approach quantitatively describes the relationship between nucleation rates and supersaturations at each temperature but in most of the cases, the predicted results deviate several orders of magnitude from the experimental data. However, under the framework of DGT, the nucleation rates for water can be fitted satisfactorily by adjusting the influence parameter. The predicted nucleation rates are significantly improved compared with DFT approach and agree well with the experimental data.

    3. Electrochemical Studies of 1,4-Bis[2-(2-pyridyl)-vinyl] Benzene and 1,4-Bis[2-(4-pyridyl) vinyl] Benzene Laser Dyes via Cyclic Voltammetry, Convolutive Voltammetry and Digital Simulation Methods (pages 241–247)

      Samy A. EL-DALY, Ibrahim S EL-HALLAG, Ezeiny M EBEED and Mohamed M GHONEIM

      Version of Record online: 3 MAR 2009 | DOI: 10.1002/cjoc.200990039

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      Electrochemical properties of two diolefinic laser dyes namely 1,4-bis[2-(2-pyridyl)- vinyl] benzene (2PVB) and 1,4-bis [2-(4-pyridyl) vinyl] benzene (4PVB) have been investigated using cyclic voltammetry and convolutive voltammetry combined with digital simulation at a platinum electrode in 0.1 mol/L tetrabutyl ammonium perchlorate (TBAP) in two different solvents acetonitrile (CH3CN) and dimethylformamide (DMF). The species were reduced via consumption of two sequential electrons to form radical anion and dianion. In switching the potential to positive direction, the two compounds were oxidized by loss of one electron, which was followed by a fast isomerisation process. The electrode reaction pathway and the electrochemical parameters of the investigated compounds were determined using cyclic voltammetry. The extracted electrochemical parameters were verified and confirmed via digital simulation and convolutive voltammetry methods.

    4. Electrochemical Synthesis of Polypyrrole in a Room Temperature Ionic Liquid and Its Properties (pages 248–252)

      Aijian ZHANG, Yingzi LIU, Huan WANG, Guirong ZHANG, Kai ZHANG and Jiaxing LU

      Version of Record online: 3 MAR 2009 | DOI: 10.1002/cjoc.200990040

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      Ionic liquid was used as both solvent and supporting electrolyte for the electrochemical polymerization of pyrrole. Compared with the behavior of blank ionic liquid (broken line), the current increases dramatically, then, as of the second and the following scans, the current falls, which is contrary to the increasing current in organic solvents. It owns to the high viscosity of the ionic liquid and more difficulty of the movement of the dopants.

    5. Photoelectrochemical Study of Corrosion Resisting Property of Cupronickel B10 in Simulated Cooling Water (pages 253–257)

      Qunjie XU, Zongyue WAN, Guoding ZHOU, Renhe YIN, Weimin CAO and Changjian LIN

      Version of Record online: 3 MAR 2009 | DOI: 10.1002/cjoc.200990041

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      The corrosion behavior for cupronickel B10 electrode in simulated cooling water has been studied by using cyclic voltammetry, a photocurrent response method and electrochemical impedance spectroscopy (EIS). The cupronickel electrode shows a p-type photoresponse to positive and negative potential scan, which comes from Cu2O layer on its surface, but its iph,max is less than that in borax buffer solution. The corrosion resisting property of the cupronickel B10 electrode appeared worse with the increase in the concentrations of Cl, SO42− and S2− ions, as well as with increasing pH.

    6. Highly Selective Perchlorate Membrane Electrode Based on Cobalt(III) Schiff Base as a Neutral Carrier (pages 258–266)

      Ardeshir SHOKROLLAHI, Mehrorang GHAEDI, Hamid Reza RAJABI and Ali Hossein KIANFAR

      Version of Record online: 3 MAR 2009 | DOI: 10.1002/cjoc.200990042

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      A highly selective poly(vinyl chloride) (PVC) membrane electrode based on Co(III)-Schiff base i.e. [Co(5-NO2-Salen)(PBu3)]ClO4·H2O (where 5-NO2-SalenH[DOUBLE BOND]bis(5-nitrosa- lycilaldehyde)ethylenediamine) as a new carrier for construction of perchlorate-selective electrode by incorporating the membrane ingredients on the surface of a graphite electrodes has been reported.

    7. One Step Preparation of Controlled Drug Release Systems in Supercritical Carbon Dioxide (pages 267–272)

      Liqin CAO, Chengwei WANG and Liuping CHEN

      Version of Record online: 3 MAR 2009 | DOI: 10.1002/cjoc.200990043

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      The core-shell particles were prepared by the copolymerization of N-isopropylacrylamide (NIPA) and N-vinylpyrrolidone (VP) at 65 °C in supercritical carbon dioxide (scCO2). Primary radicals from the thermal fragmentation of AIBN initiated the copolymerization in the presence of a cross linker, N,N′- methylenebisacrylamide (BIS). At the beginning, the continuous phase was the only active locus to produce initial polymer chains. Then the Poly(N-isopropylacrylamide) became ′CO2-phobic' and rapidly aggregated to form primary polymer particles. The polymerization proceeded in the polymer- rich phase and the CO2-rich phase. Monomers, initiator and active species (ibuprofen, Ibu) were partitioned between the phases and both loci were effective. Under stable conditions, the particles rapidly became the dominant loci. The polymerization continued only in the polymer-rich phase swollen with monomers, cross linker, Ibu and CO2. Then the core portion of the particles was formed.

    8. Two Novel 3D Hydrogen-bonded Architectures Constructed from Maleic Acid and N-donor Ligands: Structures, Magnetic Properties and Theoretical Studies (pages 273–280)

      Long TANG, Feng FU, Wenliang WANG, Dongsheng LI, Yapan WU, Xiaoming GAO and Xiaogang YANG

      Version of Record online: 3 MAR 2009 | DOI: 10.1002/cjoc.200990044

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      Two novel hydrogen-bonded 3D supramolecular architectures, Cu(mal)(tap)(H2O)]n (1) and [Cu2(mal)2(bpym)2(H2O)2]·2H2O (2) (mal=maleate, tap=1,4,5,8-tetraazaphenanthrene, bpym=2,2′-bipyrimidine) were formed under hydrothermal reactions. Complexes 1 and 2 show a 3D supramolecular edifice based on 1D arch-shaped coordination polymer chains and a 2-fold interpenetrated 3D[RIGHTWARDS ARROW]3D supramolecular architecture with the 6-connected α-Po(46) topology, respectively. At the same time, the experimental structure was optimized and the magnetic coupling behavior of 1 and 2 was studied using DFT methods.

    9. Mechanism for OH-Initiated Oxidation of n-Octane in the Presence of O2 and NO: A DFT Study (pages 281–288)

      Yan ZHAO, Hui WANG, Xiaomin SUN, Qingzhu ZHANG and Wenxing WANG

      Version of Record online: 3 MAR 2009 | DOI: 10.1002/cjoc.200990045

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      Profile of the potential energy surface for the formation pathways of the second generation products in the presence of O2 and NO was constructed. The main second generation products are hydroxycarbonyl tetrahydrofuran and carbonyl ester.

    10. A High Performance Theory for Thermodynamic Study on the Binding of Human Serum Albumin with Erbium Chloride (pages 289–294)

      G. Rezaei BEHBEHANI, A. DIVSALAR, A. A. SABOURY, F. FARIDBOD and M. R. GANJALI

      Version of Record online: 3 MAR 2009 | DOI: 10.1002/cjoc.200990046

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      A thermodynamic study of the interaction between erbium(III) chloride (Er3+) and human serum albumin (HSA) was studied at pH=7.0, 27 and 37 °C in phosphate buffer by isothermal titration calorimetry (ITC). The present study reports the thermodynamic parameters that govern HSA-Er3+ interactions. The extended solvation theory was used to reproduce the enthalpies of HSA-Er3+ interactions over the whole range of Er3+ concentrations. The binding parameters recovered from the new model were attributed to the structural change of HSA and its biological activity.

    11. Synthesis of Cd(OH)2 with Doughnut Microstructure and Its Controlled Growth Mechanism (pages 295–298)

      Yin PENG, Zhengyin LIU, Feng YE and Xianwen WEI

      Version of Record online: 3 MAR 2009 | DOI: 10.1002/cjoc.200990047

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      Cd(OH)2 with doughnut-like microstructure was synthesized by a facile solution-based method using polymer polyacrylamide (PAM) as a crystal growth modifier. Doughnut-like microstructures with a concave from one side was obtained in the presence of polymer PAM. Moreover, nano-size Cd(OH)2 doughnuts with a hole in the middle part was obtained when carboxyl-functionalized polyacrylamide (PAM-COOH) was used as crystal growth modifier. The mechanism of the Cd(OH)2 microstructures formation was discussed.

    12. Studies on Triterpenoids and Flavones in Glycyrrhiza uralensis Fisch. by HPLC-ESI-MSn and FT-ICR-MSn (pages 299–305)

      Xiangyu MENG, Huilin LI, Fengrui SONG, Chunming LIU, Zhiqiang LIU and Shuying LIU

      Version of Record online: 3 MAR 2009 | DOI: 10.1002/cjoc.200990048

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      Seven compounds, four flavones and three triterpenoids from Glycyrrhiza uralensis Fisch. extract are identified by high performance liquid chromatography coupled with electrospray ionization multi-tandem mass spectrometry (HPLC-ESI-MSn). The fragmentation pathways of these compounds are investigated by ESI-MSn and Fourier transform ion cyclotron resonance multiple-stage tandem mass spectrometry (FT-ICR-MSn).

    13. Interaction between Xanthoxylin and Bovine Serum Albumin (pages 306–310)

      Maogui WEN, Jianniao TIAN, Yonglin HUANG, Hedong BIAN, Zhengfeng CHEN and Hong LIANG

      Version of Record online: 3 MAR 2009 | DOI: 10.1002/cjoc.200990049

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      The interaction between xanthoxylin (XT) and bovine serum albumin (BSA) has been analyzed in detail by various spectroscopic techniques. The XT-BSA binding mode, binding constant and the protein structure changes in aqueous solution were determined.

    14. Peroxo Complexes of Molybdenum(VI) Containing Mannich Base Ligands (pages 311–316)

      Mohita SHARMA, Mohd. SALEEM, M. S. PATHANIA, H. N. SHEIKH and B. L. KALSOTRA

      Version of Record online: 3 MAR 2009 | DOI: 10.1002/cjoc.200990050

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      The molybdenum(VI)-peroxo complexes containing Mannich base ligands having a formula as [MoO(O2)2(L-L)] [where L-L=morpholinobenzyl benzamide (MBB), piperidinobenzyl benzamide (PBB), morpholinobenzyl urea (MBU), piperidinobenzyl urea (PBU), morpholinobenzyl thiourea (MBTU), piperdinobenzyl thiourea (PBTU)] have been synthesized and characterized by physico-chemical, electrochemical techniques and TGA/DTA studies. The cyclic voltammograms of the complexes show two quasi-reversible steps involving complexes. The complexes have also been tested for antibacterial activity against Salmonella and Kleibsella.

    15. Synthesis and Characterization of Three Diverse Coordination Frameworks under Co-ligand Intervention (pages 317–323)

      Ping LIU, Jianqiang LIU, Yaoyu WANG, Yanping LIANG, Zhensen WU and Qizhen SHI

      Version of Record online: 3 MAR 2009 | DOI: 10.1002/cjoc.200990051

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      Three different copper(II) polymers, formulated as [Cu2(fum)(2,2′-bipy)4]·2ClO4 (1), [Cu2(µ-OH)2(fum)(dpa)2]·2H2O (2) and [Cu(SO4)(H2O)(dpap)]·H2O (3) (H2fum=fumaric acid, 2,2′-bipy=2,2′-bipyridine, dpa=di(pyrid-2-yl)amine and dpap=2,6-di(pyrid-2-ylamino)pyridine) have been synthesized and structurally characterized. Structural evolution under co-ligand intervention in the three complexes has been further discussed. Magnetic measurement shows that there is strong ferromagnetic interaction between the adjacent Cu(II) atoms in 1.

    16. Interaction Study of 2,6-Bis[4-(4-amino-2-trifluoromethyl phenoxy)benzoyl] Pyridine with Human Immunoglobulin by Optical Spectroscopy and Molecular Modeling (pages 324–330)

      Wenying HE, Qiongmei ZHANG, Wenhua GAO, Yuming DONG and Xiaojun YAO

      Version of Record online: 3 MAR 2009 | DOI: 10.1002/cjoc.200990052

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      BAFP (2,6-bis[4-(4-amino-2-trifluoromethyl phenoxy)benzoyl] pyridine, a synthesized polyimide compound, was exploited to analyze the interaction with human immunoglobulin (HIgG) by fluorescence, absorption and Fourier transform infrared (FT-IR) spectra in combination with molecular modeling under the simulated physiological conditions.

    17. Iterative Non-m/z-sharing Rule for Confident and Sensitive Protein Identification of Non-shotgun Proteomics (pages 331–337)

      Dong YUN, Haojie LU, Haijian WANG, Yang ZHANG, Gang CHENG, Hong JIN, Yanbao YU, Yawei XU, Pengyuan YANG and Fuchu HE

      Version of Record online: 3 MAR 2009 | DOI: 10.1002/cjoc.200990053

      In this study, a systematic search strategy named iterative non-m/z-sharing (INMZS) analysis was proposed to address this problem. In the strategy, all search results were screened based on the share status of corresponding matched m/z, only the proteins matched with exclusive m/z information were reserved for the confident matches. Furthermore the researchers did iterative search to improve the identification of minor components in a spot. Finally, identifications were confirmed by decoy database evaluation for the final phase of search results. Simulation and application tests of INMZS were implemented on human liver data set and standard protein cocktails. The results show that INMZS plus decoy database evaluation is efficient in ensuring the confidence and sensitivity of 2-DE or similar non-shotgun based proteome identification.

    18. Determination of Trace Protein by Methylene Blue-Tetraphenylborate Fluorescence Probe Using Polyethylene Glycol as Sensitizer (pages 338–342)

      Jiaming LIU, Zhiming LI, Xiaomei HUANG, Liqing ZENG, Xiaohua CHEN, Dongqin SONG and Zhenzhen ZHENG

      Version of Record online: 3 MAR 2009 | DOI: 10.1002/cjoc.200990054

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      An ionic association complex of methylene blue-tetraphenylborate ([MB]+· [B(C6H5)4]) can emit a strong and stable fluorescence in KH2PO4- Na2HPO4 buffer solution. In the presence of bovine serum albumin (BSA), the fluorescence signal of [MB]+· [B(C6H5)4] can be sharply quenched, further quenched by using polyethylene glycol (PEG) as a sensitizer. Thus, a new fluorescence probe for the determination of trace protein has been established, with the linear range of 0.11–88.0 pg·L−1 and the detection limit of 22.0 ag·mL−1 BSA. This sensitive method can not only be used to determine BSA, human serum albumin (HAS), ovalbumin (OVA) and γ-globulin (γ-G), respectively, but also the total protein in serum, brain and spinal cord.

    19. A Highly Efficient and Environmentally Friendly CMC-Supported Lanthanide Catalyst for One-pot Synthesis of Substituted Imidazoles (pages 343–346)

      Limin WANG, Yinfang YAO, Yonghong WANG and Gang ZOU

      Version of Record online: 3 MAR 2009 | DOI: 10.1002/cjoc.200990055

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      CMC-supported lanthanide catalyst was used in synthesis of substituted imidazoles under mild conditions, showing catalytic activity comparable to the expensive lanthanide Lewis acid Ln(OTf)3. Furthermore, the catalyst could be readily recycled and reused for five times without any appreciable loss in catalytic activity.

    20. Iodine Supported on 3-Aminopropyl Silica Gel as Efficient Catalyst for Acetylation of Alcohols under Solvent-free Conditions (pages 347–352)

      Hossein MAHDAVI, Mosa GHAEMY and Fatemeh ZERAATPISHEH

      Version of Record online: 3 MAR 2009 | DOI: 10.1002/cjoc.200990056

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      3-Aminopropyl silica gel (I2/APSG) was found to catalyze the acetylation of alcohols and phenols efficiently with acetic anhydride. The reaction is mild and selective with high yields. A wide variety of alcohols and phenols are selectively converted into the corresponding acetates using I2/APSG under solvent-free conditions at room temperature.

    21. Polystyrene-supported Palladium(II) Ethylenediamine Complex: A Recyclable Catalyst for the Syntheses of 2-Benzyl-imidazo[2,1-b][1,3]benzothiazoles by Sonogashira Reaction (pages 353–358)

      Mohammad BAKHERAD, Bahram BAHRAMIAN, Hossein NASR-ISFAHANI, Ali KEIVANLOO and Golnaz SANG

      Version of Record online: 3 MAR 2009 | DOI: 10.1002/cjoc.200990057

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      The polymer-supported palladium(II) ethylenediamine complex was used as a catalyst for the heterocyclization during Sonogashira reaction between a substituted phenyl iodide and 2-amino-3-(2-propynyl)-1,3-benzothiazolium bromide, which could readily be recovered from the reaction medium by a simple filtration, and reused without a significant loss in its activity.

    22. Microwave-Assisted Chemical Functionalization of Single-Walled Carbon Nanotubes with Organic Peroxides (pages 359–364)

      Li WAN, Xianbao WANG, Shaoqing LI, Qin LI, Rong TIAN, Mingjian LI and Jing CHENG

      Version of Record online: 3 MAR 2009 | DOI: 10.1002/cjoc.200990058

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      Microwave-assisted chemical functionalization of SWNT with organic peroxides has been shown to give a rapid and highly efficient processing to produce undecyl group functionalized single-walled carbon nanotubes (SWNT) with an optimal reaction time of 10 min.

    23. Two Metabolites with DNA-Binding Affinity from the Mangrove Fungus Xylariasp. (#2508) from the South China Sea Coast (pages 365–368)

      Fang XU, Jiyan PANG, Bingtai LU, Jiajun WANG, Yi ZHANG, Zhigang SHE, L. L. P. VRIJMOED, E. B. GARETH JONES and Yongcheng LIN

      Version of Record online: 3 MAR 2009 | DOI: 10.1002/cjoc.200990059

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      A novel metabolite xylopyridine A (1), together with a known compound pyrocoll (2), was isolated from mangrove endophytic fungus Xylaria sp. (#2508) collected from the South China Sea coast. Their affinities toward calf thymus (CT) DNA were studied by fluorescence quenching and spectrophotometric titration experiments.

    24. Tin(II) Chloride Dihydrate Catalyzed Groebke Condensation: An Efficient Protocol for the Synthesis of 3-Aminoimidazo[1,2-a]pyridines (pages 369–371)

      Ahmad SHAABANI, Ebrahim SOLEIMANI, Afshin SARVARY, Ali Hossein REZAYAN and Ali MALEKI

      Version of Record online: 3 MAR 2009 | DOI: 10.1002/cjoc.200990060

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      The ability of tin(II) chloride dihydrate as a catalyst to promote the three-component condensation reaction from a diversity of aromatic aldehydes, 2-aminopyridines and isonitriles at room temperature is described. This methodology affords a number of 3-aminoimidazo[1,2-a]pyridines in the presence of tin(II) chloride dihydrate as a new and mild Lewis acid catalyst in the multi-component reaction in reasonable yields and short reaction time without any significant optimization of the reaction conditions.

    25. Hydrolysis of p-Nitrophenyl Picolinate Catalyzed by Mono-Schiff Base Complexes with Aza-crown Ether or Morpholino Pendants (pages 372–378)

      Jianzhang LI, Weidong JIANG, Famei FENG, Bin XU, Wei HU, Jin ZHANG and Shengying QIN

      Version of Record online: 3 MAR 2009 | DOI: 10.1002/cjoc.200990061

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      Two mono-Schiff base manganese(III) and cobalt(II) complexes with benzo-10-aza-crown ether pendants (MnL21Cl,CoL21), and the two analogues with morpholino pendants (MnL22Cl,CoL22) have been employed as models to mimic hydrolase in p-nitrophenyl picolinate hydrolysis. The kinetics and the mechanism on PNPP hydrolysis catalyzed by these complexes were investigated.

    26. Facile Method for the Synthesis of Combinatorial Libraries of Benzimidazole, Benzothiazole, Benzoxazole, Perimidine and Quinazolinone (pages 379–383)

      Majid. M. HERAVI, Bita BAGHERNEJAD and Hossein A OSKOOIE

      Version of Record online: 3 MAR 2009 | DOI: 10.1002/cjoc.200990062

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      A simple method for the synthesis of heterocyclic compounds with trialkyl orthoformate using molecular sieve 3? as a catalyst is described.

    27. Transformation of Oximes and Alcohols to Carbonyl Compounds Using Amberlite IRA-400 Supported Chromic Acid in the Presence of Zirconium Tetrachloride (pages 384–388)

      Kiumars BAHRAMI, Mohammad-Mehdi KHODAEI and Usef GORGIN-KARAJI

      Version of Record online: 3 MAR 2009 | DOI: 10.1002/cjoc.200990063

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      A wide variety of oximes and alcohols were efficiently converted to their corresponding aldehydes and ketones in good to excellent yields using amberlite IRA-400 supported chromic acid in the presence of zirconium tetrachloride in refluxing acetonitrile-H2O. Selective oxidation of oximes and alcohols in the presence of other functional groups such as acetal, hydrazone, aldehyde, ether and alkene can be considered as a noteworthy advantage of this method. A wide variety of oximes and alcohols were efficiently converted to their corresponding aldehydes and ketones in good to excellent yields using amberlite IRA-400 supported chromic acid in the presence of zirconium tetrachloride in refluxing acetonitrile-H2O. Selective oxidation of oximes and alcohols in the presence of other functional groups such as acetal, hydrazone, aldehyde, ether and alkene can be considered as a noteworthy advantage of this method

    28. Aza-Michael Addition of Isatin and Phthalimide to Symmetrical Fumaric Esters in Ionic Liquid Media (pages 389–396)

      Gholam Hassan IMANZADEH, Mahdieh MOLLAEI TAVANA, Mohammad Reza ZAMANLOO and Yagoub MANSOORI

      Version of Record online: 3 MAR 2009 | DOI: 10.1002/cjoc.200990064

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    29. Synthesis and Preliminary Anti-leukemia Activity of N-(Substituted Benzyl)-4-hydroxy-4-substituted Piperidine Derivatives (pages 397–402)

      Zhikun FANG, Sijia XUE, Long CHEN, Yang XU, Anqin YIN and Chunyan LI

      Version of Record online: 3 MAR 2009 | DOI: 10.1002/cjoc.200990065

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      Twelve unreported N-(substituted benzyl)-4-hydroxy-4-substituted piperidines (6a6l) have been synthesized and the structures have been confirmed by 1H NMR, IR, MS and elemental analysis. The preliminary anti-tumor activity tests indicate that the title compounds have good effect on the cellular growth inhibition against K562 cells.

    30. Palladium-catalyzed Substitution of Ketone or Aldehyde Bearing Aryl Triflates by Amines or Amides (pages 403–407)

      Xiaochun TAO, Chunya DAI, Xiongjie CAO, Lisheng CAI and Victor W. PIKE

      Version of Record online: 3 MAR 2009 | DOI: 10.1002/cjoc.200990066

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      Various aryl triflates, bearing ketone or aldehyde groups, were evaluated for palladium-mediated introduction of an amino group at the triflate position in the presence of various phosphine ligands. Different ligands were identified as being effective for this reaction with different amine or amide nucleophiles. BINAP was best for secondary amines, MOP-type ligand for primary or small secondary amines and Xantphos for primary or cyclic secondary amides. No ligand was found effective for acyclic secondary amides.

    31. Synthesis of Dinaphtho-dioxaphosphepin-4-oxides, Epoxides and Bisphosphonates (pages 408–412)

      Maddali KASTHURIAH, Arigala UMA RAVI SANKAR, Bitragunta SIVA KUMAR, Cirandur SURESH REDDY and Chamarthi NAGA RAJU

      Version of Record online: 3 MAR 2009 | DOI: 10.1002/cjoc.200990067

      A few new seven-membered phosphorus heterocyclic compounds and bis-phosphonates (5a–5g, 5f′, 5g′, 9 and 10) were prepared by the reaction of 4-bromo dioxaphosphepin (2) with various Grignard reagents followed by their oxidation with H2O2. All the compounds were thoroughly characterized by elemental analysis, IR, 1H, 13C, 31P NMR and mass spectral data. Their antimicrobial activity was evaluated and some of them possess significant activity.

    32. Asymmetric Alkynylation of Aldehydes Catalyzed by Bifunctional Zinc(salen) Complex (pages 413–418)

      Chun SHEN, Lei CHEN, Jie TANG and Minghua XU

      Version of Record online: 3 MAR 2009 | DOI: 10.1002/cjoc.200990068

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    33. Controlled Grafting of Poly(methyl methacrylate) Brushes on Poly(vinylidene fluoride) Powders by Surface-initiated Atom Transfer Radical Polymerization (pages 419–422)

      Zhaoqi TANG, Wei LI, Lanqin LIU, Lei HUANG, Jin ZHOU and Haiyin YU

      Version of Record online: 3 MAR 2009 | DOI: 10.1002/cjoc.200990069

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      Surface initiated atom transfer radical polymerization (ATRP) of methyl methacrylate (MMA) on the poly(vinylidene fluoride) (PVDF) was carried out as proposed in the Figure. Degradation of PVDF was performed by alkaline treatment, the initiation site of Br atoms were introduced into PVDF by photoinduced bromination. Finally, MMA was grafted onto the brominated PVDF by using the ATRP technique in the presence of copper bromide and 2,2′-bipyridyl complexes. The degree of grafting of the modified PVDF tends to increase linearly with reaction time, which were typical of a living process.

    34. Cu(I)-catalyzed Synthesis of Diaryl Ether Using a Simple Hydrazone as Promoter (pages 423–427)

      Yuhua LIU, Gang LI and Lianming YANG

      Version of Record online: 3 MAR 2009 | DOI: 10.1002/cjoc.200990070

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      A simple hydrazone compoud, 2-pyridinecarboxaldehyde phenylhydrazone (1), was employed as an efficient ligand for CuI-catalyzed coupling reaction between aryl bromides and phenols. This reaction occurred under relatively mild conditions with a broader substrate scope and a high tolerance of functionalities.

  3. Notes

    1. Top of page
    2. Communication
    3. Full Papers
    4. Notes
    1. Synthesis, Structure and Properties of Poly(arylene imino)s (pages 428–432)

      Lin ZhANG and Guanjun CHANG

      Version of Record online: 3 MAR 2009 | DOI: 10.1002/cjoc.200990071

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      High performance poly(arylene imino)s have been synthesized by the condensation polymerization of different diiodobenzenes with aromatic primary diamines via two different methods with high molecular weights and small polydispersity indices. These novel polymers possess high glass transition temperature (Tg>150 °C), good thermal stability with high decomposition temperatures (TD>400 °C), and also exhibit good solubility in organic solvents.

    2. Improved Preparation of Tyramine by Curtius Rearrangement (pages 433–436)

      Yun LI, Fan YANG, Xiaoying XU, Shiyin PAN, Lixin WANG and Chuanqin XIA

      Version of Record online: 3 MAR 2009 | DOI: 10.1002/cjoc.200990072

      Thumbnail image of graphical abstract

      An improved and facile preparation of tyramine [2-(p-hydroxyphenyl)ethyl- amine] was described, which starts from phenol and acrylonitrile to form ???β????-(p-hydroxyphenyl)propionic acid via Friedel-Craft's alkylation and nitrile hydrolysis. After hydrazinolysis and a subsequent Curtius rearrangement, tyramine was obtained.

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