Chinese Journal of Chemistry

Cover image for Chinese Journal of Chemistry

October, 2011

Volume 29, Issue 10

Pages 1991–2212

  1. Contents

    1. Top of page
    2. Contents
    3. Full Papers
    4. Notes
  2. Full Papers

    1. Top of page
    2. Contents
    3. Full Papers
    4. Notes
    1. Wormlike Micelle Formation and Rheological Behavior in the Aqueous Solutions of Mixed Sulfate Gemini Surfactant without Spacer Group and Dodecyltrimethylammonium Bromide (pages 2003–2006)

      Xiaomei Pei, Jianxi Zhao, Yi You, Yufang Liu and Xilian Wei

      Article first published online: 25 OCT 2011 | DOI: 10.1002/cjoc.201180348

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      C12TABr can induce anionic gemini surfactant d-C12S to form wormlike micelles and the zero-shear viscosity is as high as 600 Pa·s.

    2. Activity Coefficients of NaCl in Ethylene Glycol-Water Mixtures Using Potentiometric Measurements at 288.15, 298.15 and 308.15 K (pages 2007–2013)

      Shuni Li, Jing Tang, Yanyan Ma, Quanguo Zhai, Yucheng Jiang and Mancheng Hu

      Article first published online: 25 OCT 2011 | DOI: 10.1002/cjoc.201180349

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      The mean activity coefficients of NaCl in ethylene glycol-water mixtures were determined in the range of w=0.10 to 0.40 ethylene glycol at 288.15, 298.15 and 308.15 K using potentiometric measurements. The Pitzer and extended Debye-Hückel equations were used to describe the nonideal behavior of the electrolyte. Osmotic coefficients and the standard Gibbs energy of NaCl-ethylene glycol-water were calculated.

    3. Study on Effect and Catalytic Mechanism of the Catalysts for Coal Oxidation in Alkaline Medium (pages 2014–2018)

      Huaiyou Liu, Jingkang Lü, Yonggang Zhao, Wei Zhou and Renhe Yin

      Article first published online: 25 OCT 2011 | DOI: 10.1002/cjoc.201180350

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      Coal electro-oxidations in sodium hydroxide solution with catalysts, K3Fe(CN)6, sodium hypochlorite and supported FeS, were investigated, respectively. The three kinds of catalysts obviously improve the coal oxidation current. The catalytic mechanism was discussed.

    4. Application of a Novel Ant Algorithm Termed Continuous Gridded in Aidded Drug Design (pages 2019–2026)

      Guohua Chen and Yao Lu

      Article first published online: 25 OCT 2011 | DOI: 10.1002/cjoc.201180351

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      Aimed at solving continuous optimum parameter problems effectively in added drug design, this paper develops a novel ant algorithm termed continuous gridded ant colony (CGAC), where the spy ants are utilized to search the latent optimum grid in the domain completely and effectively. The CGAC algorithm was successful in finding the best values of C and γ, when the support vector machine (SVM) was used to fit the nonlinear relationship between the numerical representation of the chemical structure and IC50. The results demonstrate that the proposed CGAC algorithm provides a new and effective method to find the optimum parameters when the SVM tool is used.

    5. Effect of Electrolytes and Polymers on the Thixotropy of Mg-Al-Layered Double Hydroxides/Kaolinite Dispersions (pages 2027–2033)

      Xiaonan Dai, Wanguo Hou and Hongdong Duan

      Article first published online: 25 OCT 2011 | DOI: 10.1002/cjoc.201180352

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      The positive thixotropy and complex thixotropy were found in Mg-Al-layered double hydroxides/kaolinite dispersions, and the type of thixotropy in LDH/kaolinite dispersions would be affected by electrolytes and polymers.

    6. A Tri-µ-O-S-O Manganese Dimer: Synthesis, Structral and EPR Study (pages 2034–2038)

      Yangang Bi, Yuyou Chen and Xiaoming Lu

      Article first published online: 25 OCT 2011 | DOI: 10.1002/cjoc.201180353

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      A Tri-µ-O-S-O coordinative manganese dimer: [Mn2(SO4)2(phen)4]· CH3OH (phen[DOUBLE BOND]1,10-phenanthroline) (1) was yielded by the reaction of 1,10-phenanthroline and MnSO4·H2O in a mixed solvent of methanol and acetonitrile under room temperature and was structurally characterized. Single crystal analysis shows that complex 1 has polymeric structure based on binuclear Mn(II) units bridged by O-S-O groups of two SO42− anion. The UV spectrum of the complex clarifies that each metal-organic building unit parallels with each other through the Π-Π interactions of face-to-face separations of two 1,10-phen planes among the complex, forming a layered structure. And the electronic paramagnetic resonance (EPR) signal clearly indicates that those manganese atoms in complex 1 are in +2 oxidation states.

    7. Design and Synthesis of Novel Pyrazole-based Lp-PLA2 Inhibitors (pages 2039–2048)

      Yi Wang, Weiren Xu, Hua Shao, Yafei Xie and Jianwu Wang

      Article first published online: 25 OCT 2011 | DOI: 10.1002/cjoc.201180354

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      A series of novel pyrazole-based Lp-PLA2 inhibitors have been designed and synthetized in ten steps from a variety of acetophenones. The synthetic method and biological activity was carefully optimized and fully tested.

    8. Effect of Poly(ethylene glycol)-400 and Carbon on MoO3 Nanocomposite Materials and Its Catalytic Activity (pages 2049–2056)

      Madhukar Navgire, Ajeet Yelwande, Balasaheb Arbad and Machhindra Lande

      Article first published online: 25 OCT 2011 | DOI: 10.1002/cjoc.201180355

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      The effects of addition of polyethylene glycol (PEG-400) and carbon (0, 1, 2 and 3 wt%) as substrates were investigated systematically to get the desired phase of carbon-doped MoO3 material. The samples with PEG-400 and carbon addition give better control of particle size and porosity. The prepared catalysts were tested for the synthesis of 3,4-dihydropyrimidones via the Biginelli-type condensation reaction.

    9. Synthesis and Opto-electronic Properties of a Red-Emitting Heteroleptic Platinum Complex Using Pyrazol-based Diketone Derivative as Ancillary Ligand (pages 2057–2062)

      Jiyong Deng, Yafei Wang, Xiaoshuang Li, Meijun Ni, Ming Liu, Yu Liu, Gangtie Lei, Meixiang Zhu and Weiguo Zhu

      Article first published online: 25 OCT 2011 | DOI: 10.1002/cjoc.201180356

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      The red-emitting heteroleptic cyclometalated platinum(II) complex containing an ancillary ligand of pyrazol-based diketone derivative was synthesized. Using this platinum(II) complex as a single dopant and a blend of ploy(9,9-dioctylfluorene) and 2-tert-butylphenyl-5-phenyl-1,3,4-oxadiazole as a host matrix, the fabricated polymer light-emitting devices displayed saturated red emission with a peak at 648 nm and a shoulder at 601 nm, together with improved electroluminescent properties.

    10. Encapsulation Chalcogen Anions in Perfluorinated Silicon Fullerene: X2−@Si20F20 (X=O, S, Se) (pages 2063–2067)

      Hong Wang and Lin Wu

      Article first published online: 25 OCT 2011 | DOI: 10.1002/cjoc.201180357

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      The structures and stabilities of the endohedral complexes X2−@Si20F20 (X=O, S, Se) were determined at the B3LYP/6-31G(d) levels of density functional theory. The calculations predict that X=S and Se are nearly located at the center of the cage, and O dramatically deviates from the center in C3v symmetry. The corresponding X2−@Si20F20 complexes have more negative inclusion energies and thermodynamic parameters than X2−@C20F20. The amount of charge that is being transferred from the encapsulated anions to the cage increases with the atomic radius, i.e., from O2− (ca. 45%), S2− (ca. 51%) to Se2− (ca. 59%).

    11. Reactivity of Schiff Base Manganese(III) Complexes with Different Pendants toward the Hydrolysis of p-Nitrophenyl Picolinate (pages 2068–2074)

      Weidong Jiang, Xiyang He, Ying Wang, Bin Xu, Jianzhang Li and Fuan Liu

      Article first published online: 25 OCT 2011 | DOI: 10.1002/cjoc.201180358

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      Steric hindrance of 3′-linked pendant, benzoaza-15-crown-5 or morpholine, is probably the main reason for the 1.2–1.7 fold activity difference between the two Schiff base manganese(III) complexes in the hydrolysis of p-nitrophenyl picolinate. Molecular mimic calculation (MMC) using Gaussian 03 software provides correlative information for the open level of the inner metal centra, implying it is indeed a key process that substrate efficiently links with the central manganese inside complex.

    12. Highly Efficient Microwave-Assisted Substitution of β-Dicarbonyl Compounds with Secondary Alcohols Using Fluoroboric Acid as the Catalyst (pages 2075–2080)

      Peinian Liu, Fei Xia, Yujie Ren and Junqina Chen

      Article first published online: 25 OCT 2011 | DOI: 10.1002/cjoc.201180359

      Thumbnail image of graphical abstract

      The microwave-assisted substitution of β-dicarbonyl compounds with secondary alcohols has been achieved efficiently, using very cheap fluoroboric acid (HBF4) as the catalyst.

    13. Facile Synthesis of N-Sulfonylcyclothioureas in Water (pages 2081–2085)

      Guoxiang Wan, Liang Xu, Xiaosi Ma, Yong Zhang, Jian Wang, Jian Zhang and Ning Ma

      Article first published online: 25 OCT 2011 | DOI: 10.1002/cjoc.201180360

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    14. Novel and Efficient One Pot Condensation Reactions between Ketones and Aromatic Alcohols in the Presence of CrO3 Producing α,β-Unsaturated Carbonyl Compounds (pages 2086–2090)

      Yanan Li and Daoyong Chen

      Article first published online: 25 OCT 2011 | DOI: 10.1002/cjoc.201180361

      Thumbnail image of graphical abstract

      A new, effective and simple method for preparing α,β-unsaturated carbonyl compounds by reacting ketones and aromatic alcohols at 56°C in the presence of CrO3 (CrO3 acts as an oxidant and also a catalyst) for around 10 h was reported. The condensation reactions occurred effectively among a wide combination of ketones and alcohols.

    15. CrCl3·6H2O/Hydrogenated Bis-Schiff Base as a New Efficient Catalyst System for Synthesis of Bis(indoly) Methane (pages 2091–2096)

      Yonglei Yang, Zhengfeng Xie and Jide Wang

      Article first published online: 25 OCT 2011 | DOI: 10.1002/cjoc.201180362

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      CrCl3·6H2O/hydrogenated bis-Schiff base is found to be an effective catalyst system for synthesis of bis(indoly) methane via electrophilic addition reaction of indoles with aldehydes using acetonitrile as the solvent. The yields of isolated products are from good to excellent.

    16. Mn(III)-Mediated Chlorination of Conjugated Ketones (pages 2097–2100)

      Xingchao Liu, Lu Wang and Jianping Zou

      Article first published online: 25 OCT 2011 | DOI: 10.1002/cjoc.201180363

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    17. Microwave-Assisted Aqueous Synthesis: A Rapid Approach to Poly-functionalized Indoline-Spiro Benzofurodiazepines (pages 2101–2108)

      Shuliang Wang, Chuang Cheng, Feng Gong, Feiyue Wu, Bo Jiang, Jianfeng Zhou and Shujiang Tu

      Article first published online: 25 OCT 2011 | DOI: 10.1002/cjoc.201180364

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      New cycloaddition has been established for the synthesis of indoline-spiro benzofurodiazepine derivatives. Those reactions were conducted by reacting readily available and inexpensive starting materials, such as benzene-1,2-diamines, tetronic acid and indoline-2,3-diones, in aqueous solution under microwave irradiation. When mono-substituted benzene-1,2-diamines as an amine component was employed, the reaction regioselectively resulted in the poly-functionalized indoline-spiro benzofurodiazepine with good yields. The present green synthesis shows attractive characteristics such as the use of water as reaction media, concise one-pot conditions, short reaction periods, easy work-up/purification and reduced waste production without the use of any strong acids or metal promoters.

    18. N-(Substituted benzyl)-3,5-bis(benzylidene)-4-piperidones: Synthesis and Preliminary Anti-leukemia Activity (I) (pages 2109–2113)

      Jing Wang, Wen Meng, Zhenjie Ni and Sijia Xue

      Article first published online: 25 OCT 2011 | DOI: 10.1002/cjoc.201180365

      Thumbnail image of graphical abstract

      A series of novel N-(substituted ben-zyl)-3,5-bis(benzyl-idene)-4-piperidones 5a5o were synthesized with substituted benzylamines as raw materials via a series of Michael addition, Dieckmann condensation, hydrolysis decarboxylation and aldol condensation. The structures were confirmed by 1H NMR, IR, MS techniques and elemental analysis. Assay-based antiproliferative activity study using leukemic cell lines K562 revealed that most of the title compounds have high effectiveness in inhibiting leukemia K562 cells proliferation.

    19. Synthesis and Bioactivities of Andrographolide Derivatives: New (−)-Limonidilactone Analogues (pages 2114–2118)

      Haiwei Xu, Pingjuan Jiang, Weiyi Li, Junfeng Wang and Hongmin Liu

      Article first published online: 25 OCT 2011 | DOI: 10.1002/cjoc.201180366

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      In this study, a novel route to (−)-limonidilactone analogues 10, 11 by way of stereoselective reaction of andrographolide (5) from 8, 9 was reported. The anti-tumor and α-glucosidase inhibition activities of some synthetic compounds were screened.

    20. Convenient Synthesis of 3,5-Biscarbamoyl-pyridine Derivatives (pages 2119–2123)

      Xiayun Wang, Yiwen Zhu, Min Zhang, Dongliang Lu, Qun Qian, Yali Chen, Weiguo Cao, Liping Song and Hongmei Deng

      Article first published online: 25 OCT 2011 | DOI: 10.1002/cjoc.201180367

      Thumbnail image of graphical abstract

      An efficient and convenient method for synthesis of 3,5-bis-carbamoyl-2,6-dimethylpyridine derivatives was achieved in good to excellent yields by reaction of anilines with 3,5-bis(3′,5′-dimethyl-1′-pyrazolyl-carbonyl)-2,6-dimethylpyridine, in which pyrazoles served as leaving groups.

    21. Copper-catalyzed N-Arylation of Imidazoles with Aryl or Heteroaryl Halides Facilitated by Dimethylglyoxime in Water (pages 2124–2128)

      Xiangmei Wu and Weiya Hu

      Article first published online: 25 OCT 2011 | DOI: 10.1002/cjoc.201180368

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      A combination of CuSO4/dimethylglyoxime was found to be an efficient and inexpensive catalyst system for N-arylation of imidazole and benzimidazole with aryl halides and heteroaryl halides in water, providing the corresponding products in moderate to good yields.

    22. Synthesis, Photophysical Properties of Tribranched Chromophores Based on 1,3,5-Triazine Core and Different Electro-donating End-groups (pages 2129–2133)

      Li Liu, Wei Huang, Jieping Shi, Changgui Lü, Yiping Cui and Guo-Yuan Lu

      Article first published online: 25 OCT 2011 | DOI: 10.1002/cjoc.201180369

      Thumbnail image of graphical abstract

      Three two-photon absorption (TPA) tribranched chromophores, 1,3,5-triazine as elec-tron deficient core, 1,4-phenylenedivinylene as conjugated bridge, 3,4-ethylenedioxy-thio-phene (EDOT) (T1), N-methylpyrrole (T2) or triphenylamine (T3) as electron-donating end-groups, were successfully prepared. Their photophysical properties were studied by absorption, one and two-photon fluorescence and TPA cross-section determination. The nonlinear transmission (NLT) measurement in femtoseconds (fs) regime at 800 nm indicates that they show large TPA cross-section s2, and T1 with EDOT end-groups exhibits larger TPA cross-section than T2 and T3.

    23. Determination of Parathion-methyl in Vegetables by Fluorescent-Labeled Molecular Imprinted Polymer (pages 2134–2140)

      Qian Sun, Qianqian Yao, Zhoulin Sun, Tianshu Zhou, Dongxia Nie, Guoyue Shi and Litong Jin

      Article first published online: 25 OCT 2011 | DOI: 10.1002/cjoc.201180370

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      A novel sensor for the determination of parathion-methyl based on couple grafting of functional molecular imprinted polymers (MIPs) was fabricated which is developed by anchoring the MIP layer on surfaces of silica particles embedded CdSe quantum dots by surface imprinting technology. The synthesized molecular imprinted silica nanospheres (CdSe@SiO2@MIP) allow a high selectivity and sensitivity of parathion-methyl via fluorescence intensity decreasing when the MIP material rebinding the parathion-methyl molecule.

    24. Preconcentration/Separation of Some Metal Ions Using Sodium Dodecyl Sulfate Coated Alumina Modified with Bis(5-bromo-2-hydroxy-benzaldehyde)-2-methyl-1,5-pentane Diimine (BBHBPDI) Prior to Their Flame-AAS Determination (pages 2141–2147)

      Mehrorang Ghaedi, Morteza Montazerozohori, Farzaneh Marahel, Mehdi Nejati Biareh and Mostafa Soylak

      Article first published online: 25 OCT 2011 | DOI: 10.1002/cjoc.201180371

      Thumbnail image of graphical abstract

      Preconcentration/separation of Co(II), Fe(III), Pb(II), Cr(III), Cu(II) and Cd(II) ions using bis(5-bromo-2-hydroxy-benzaldehyde)-2-methyl-1,5-pentane diimine (BBHBPDI) on SDS coated alumina has been reported.

    25. Electrochemiluminescence Behavior of Ru(bpy)32+/Carbofuran System on an Electrically Heated Microelectrode Chip (pages 2148–2152)

      Ruihong Ye, Xiaoping Chen, Bin Qiu and Zhenyu Lin

      Article first published online: 25 OCT 2011 | DOI: 10.1002/cjoc.201180372

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      An electrically heated microelectrode chip (HMEC) was designed and the Ru(bpy)32+/carbofuran electrochemiluminescence (ECL) systems were applied to characterize the performance of the HMEC. The ECL intensities increase at elevated electrode temperature, and the detection limit at 60°C (electrode surface temperature) was about 10 times lower than that at 30°C. The results indicate that new heated electrode can be handled easily and can be mass produced, the difference between the electrodes was little. The stability of the HMEC was good since the electrode surface can hardly be destroyed during detection and storage.

    26. Synthesis and Insecticidal Activities of 1,3,5-Trisubstituted-1,3,5-hexahydrotriazine-2-N-nitroimines (pages 2153–2156)

      Sijia Xue, Xubo Ma, Hongfei Bu, Li Liu and Xiao Xu

      Article first published online: 25 OCT 2011 | DOI: 10.1002/cjoc.201180373

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      A new series of 1,3,5-trisubstituted-1,3,5-hexahydrotriazine-2-N-nitroimines (3a3j) were designed and synthesized as novel neonicotinoid analogues, and their structures were characterized by 1H NMR, IR, elemental analysis and MS. The preliminary bioassay tests showed that most of the target compounds had good insecticidal activities against Nilaparvata lugens as well as Aphis medicaginis at 500 mg/L, while compound 3i had 100% mortality against Nilaparvata lugens at 20 mg/L.

    27. A Sensitive Simultaneous Determination of Adrenalin and Paracetamol on a Glassy Carbon Electrode Coated with a Film of Chitosan/Room Temperature Ionic Liquid/Single-Walled Carbon Nanotubes Nanocomposite (pages 2157–2164)

      Ali Babaei, Mitra Babazadeh and Mohammad Afrasiabi

      Article first published online: 25 OCT 2011 | DOI: 10.1002/cjoc.201180374

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      Simultaneous determination of adrenalin (AD) and paracetamol (PAR) can be performed on single-walled carbon nanotube/chitosan/ionic liquid modified glassy carbon electrode (SWCNT-CHIT-IL/GCE). DPV experiments showed that the oxidation peak currents of AD and PAR are proportional to the corresponding concentrations over the 1–580 μmol/L and 0.5–400 μmol/L ranges, respectively. The RSD at a concentration level of 15 μmol/L AD and 15 μmol/L PAR were 1.69% and 1.82%, respectively. Finally the modified electrode was used for simultaneous determination of AD and PAR in real samples with satisfactory results.

    28. A New Fluorescent Chemosensor for Metal Ions Based upon 1,8-Naphthalimide and 8-Hydroxyquinoline (pages 2165–2168)

      Hui Xu, Xiwen Zeng and Huiling Dai

      Article first published online: 25 OCT 2011 | DOI: 10.1002/cjoc.201180375

      Thumbnail image of graphical abstract

      A new fluorescent chemosensor based upon 1,8-naphthalimide and 8-hydroxyquinoline was synthesized, and its fluorescent properties in the presence of different metal cations (Hg2+, Ag+, Zn2+, Fe2+, Cd2+, Pb2+, Ca2+, Cu2+, Mg2+ and Ba2+) were investigated. It displayed fluorescence quenching with some heavy and transition metal (HTM) ions, and the quenching strongly depended on the nature of HTM ions.

    29. Temperature-induced Molecular Chain Motions of Styrenic Triblock Copolymers Studied by Intrinsic Fluorescence Spectra (pages 2169–2174)

      Zhongke Yuan, Dacheng Yang and Li Fan

      Article first published online: 25 OCT 2011 | DOI: 10.1002/cjoc.201180376

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      The temperature-induced molecular chain motions of styrenic triblock copolymers (SBC), i.e. polystyrene-block-polybutadiene-block-polystyrene (SBS) and polystyrene-block-poly(ethylene-co-1-butene)-block-polystyrene (SEBS), were studied by intrinsic fluorescence method. For SBS, the glass transition temperatures (Tgs) of B block and S block obtained by intrinsic fluorescence method were in good agreement with differential scanning calorimetry measurements (DSC).

    30. Influence from Thermal Elimination Temperature of Precursor Polymer and Film-forming Methods on the Photophysics of the Poly(2,5-didodecyloxy-p-phenylenevinylene) (pages 2175–2181)

      Shangli Wang, Wei Zhao, Xiaoqian Xu, Si Cheng and Lijuan Fan

      Article first published online: 25 OCT 2011 | DOI: 10.1002/cjoc.201180377

      Thumbnail image of graphical abstract

      A series of poly(p-phenylenevinylene)s (PPVs) with good solubility were synthesized from thermal elimination of precursor poly(2,5-didodecyloxy-p-phenylenevinylene) at different temperature via Wessling method. The polymer photophysics were influenced by the thermal elimination condition, which was consistent with NMR and IR characterizations.

    31. A Supramolecular Hydrogel Inspired by Elastin (pages 2182–2186)

      Lei Ding, Shufang Wang, Wenjie Wu, Yuehan Hu, Cuihong Yang, Ming Tan, Deling Kong and Zhimou Yang

      Article first published online: 25 OCT 2011 | DOI: 10.1002/cjoc.201180378

      Thumbnail image of graphical abstract

      A thixotropic supramolecular hydrogel inspired by elastin was reported in this study.

    32. QSRR Study of GC Retention Indices of Volatile Compounds Emitted from Mosla chinensis Maxim by Multiple Linear Regression (pages 2187–2196)

      Hui Cao, Zuguang Li and Xiaozhen Chen

      Article first published online: 25 OCT 2011 | DOI: 10.1002/cjoc.201180379

      Thumbnail image of graphical abstract

      The volatile compounds emitted from Mosla chinensis Maxim were analyzed by headspace solid-phase microextraction and headspace liquid-phase microextraction combined with gas chromatography-mass spectrometry (GC-MS). Multiple linear regression method was used for building the quantitative structure and retention relationship model.

    33. High Glass Transition and Optical Transparency of Novel Organosoluble Polyamides Containing 4-tert--Butyltoluene Moiety (pages 2197–2201)

      Chenyi Wang, Xiaoyan Zhao, Guang Li and Jianming Jiang

      Article first published online: 25 OCT 2011 | DOI: 10.1002/cjoc.201180380

      Thumbnail image of graphical abstract

      Based on a rigid aromatic diamine, α,α-bis(4-aminophenyl)-4-(t-butyl)toluene (1), a series of novel polyamides 3a3d containing 4-tert-butyltoluene moiety, were prepared successfully by a one-step phosphorylation polycondensation technique. The obtained polyamides could be soluble in some solvents with the dissolvability at a concentration of 10 wt% at room temperature. Meanwhile, it showed high optical transparency with lcutoff in the range of 346–363 nm and T450 more than 80%. Moreover, the polyamides displayed sufficiently high Tg value beyond 310°C, and good mechanical properties.

  3. Notes

    1. Top of page
    2. Contents
    3. Full Papers
    4. Notes
    1. An Efficient One-pot Synthesis of Pyrazolone Derivatives Promoted by Acidic Ionic Liquid (pages 2202–2204)

      Hongjun Zang, Qiuhong Su, Song Guo, Yingming Mo and Bowen Cheng

      Article first published online: 25 OCT 2011 | DOI: 10.1002/cjoc.201180381

      Thumbnail image of graphical abstract

      Pyrazolone derivatives have been synthesized in good to excellent yields from the 2:1 condensation reaction between 3-methyl-1-phenyl-5-pyrazolone and arylaldehydes in the presence of ionic liquid [HMIM]HSO4.

    2. A New Efficient Synthetic Method for 3-Iodothyronamine and Its Potent Hypothermic Efficacy (pages 2205–2208)

      Joong-Gon Kim, Young-Kyu Song, Su-Yeon Jeon, Ye-Ji Lim, Hyunwoo Ju, Inho Choi and Chan-Moon Chung

      Article first published online: 25 OCT 2011 | DOI: 10.1002/cjoc.201180382

      Thumbnail image of graphical abstract

      A new efficient synthetic method was developed for a 3-iodothyronamine, T1AM, and its hypothermic efficacy was demonstrated.

    3. Amide Hydrolysis Reaction Catalyzed by KF/Al2O3 under Microwave Irradiation and Solvent Free Conditions (pages 2209–2212)

      Xiuli Zhang, Kai Luo, Wei Chen and Lei Wang

      Article first published online: 25 OCT 2011 | DOI: 10.1002/cjoc.201180383

      Thumbnail image of graphical abstract

      A microwave-enhanced hydrolysis of amides utilizing KF/Al2O3 in the absence of solvents has been developed. Amines are produced in excellent yields along with the corresponding carboxylic acids.

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