中国化学快报

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Synthesis and Cytotoxicity Evaluation of Some Isoquinoline Derivatives Related to 1-Arylnaphthalene Lignans

Hong Xia DING, Wei LU, Chang Xin ZHOU, Hai Bo LI, Lei Xiang YANG, Qi Jun ZHANG, Xiu Mei WU, Olivier BAUDOIN, Jun Chao CAI, Françoise GUÉRITTE, Yu ZHAO

中国化学快报. 2005, 16(10): 1279-1282.

摘要 ( )

可视化

Two series of novel compounds designed as hybrids of 1-arylnaphthalene lignans with dihydroisoquinolines or isoquinolines were synthesized and evaluated for their cytotoxicities on human tumor cell lines, such as A549, Hela, PC-3 and KB. Some of the synthetic compounds exhibited their IC₅₀ values on selected cell lines at μmol/L scale.

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Design and Synthesis of Pyrido[1,2-e]purin-4(3H)-one Derivatives as Potential PDE 5 Inhibitors

Guang Xin XIA, Jian Feng LI, Shun An LAI, Ai Ming PENG, Shu Jun ZHANG, Xiao Hui WEI, Xin Jian CHEN, Jing Shan SHEN, Ru Yun JI

中国化学快报. 2005, 16(10): 1283-1286.

摘要 ( )

可视化

A novel series of pyrido[1,2-e]purin-4(3H)-one derivatives containing polar substituents on 5'-position were designed and prepared as potential PDE5 inhibitors. This paper reports the synthetic routes, ¹H-NMR data, and the PDE5 inhibitory activities of the target compounds. The polar piperazinyl group contained (on 5'-position) compound, 3B2, showed the highest activity among the tested derivatives but less potency than sildenafil 1.

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Asymmetric Synthesis of Anisodine

Yan Fen WU, Wen LÜ, Qiang LU, Wen Sheng ZHANG

中国化学快报. 2005, 16(10): 1287-1289.

摘要 ( )

可视化

Anisodine was synthesized from 3α-hydroxy-6β-acetyltropine in 11 steps. Laevorotary isomer of anisodine was prepared from the asymmetric dihydroxylation of compound 10 via the osmium catalyzed process employing p-chlorobenzoyl dihydroquinidine as the chiral ligands.

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Synthesis and Photochromic Properties of the Derivatives of Spiropyrans Containing a Mesogenic Group

Hui GUO, Yong Bin GAO, Jie HAN, Xu LI, Ji Ben MENG

中国化学快报. 2005, 16(10): 1290-1292.

摘要 ( )

可视化

Two series of novel spiropyran derivatives containing a mesogenic group have been prepared. Their photochromic behaviors were first investigated with the aid of absorption spectral measurements.

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Design and Synthesis of Novel Fluorine-containing Acrylates

Yan Chao WU, Chao WU, Xiao Mao ZOU, Fang Zhong HU, Hua Zheng YANG

中国化学快报. 2005, 16(10): 1293-1296.

摘要 ( )

可视化

A series of novel fluorine-containing acrylates 6a-6g were synthesized via the condensation of ethyl cyanoacetate and trifluoroacetic anhydride, followed by chloridization and the coupling reaction with amines. These new compounds exhibited some biological activity as preliminary bioassay indicated. A plausible reaction mechanism was outlined and discussed.

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Synthesis and Anti-HIV Activity of Trisubstituted (3'R,4'R)-3',4'-Di-O-(S)-camphanoyl-(+)-cis-khellactone (DCK) Analogs

Chun Hong ZHAO, Ting ZHOU, Lan XIE, Jing Yun LI, Zuo Yi BAO, Zhao Wen LOU, Kuo Hsiung LEE

中国化学快报. 2005, 16(10): 1297-1300.

摘要 ( )

可视化

To further explore the potential of DCK analogs as anti-HIV drug candidates, ten new tri-substituted (3'R,4'R)-3',4'-di-O-(S)-camphanoyl-(+)-cis-khellactone (DCK) derivatives (4-13)were designed, synthesized, and evaluated against HIV replication in MT4 cells and H9 lymphocytes.

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Synthesis of (S)-2-(3-Arylacrylamido)-3-{4-[2-(5-methyl-2-phenyl-oxazol-4-yl) ethoxy]phenyl}propanoic Acids

Xin Bo ZHOU, Cui Fang LIN, Song LI

中国化学快报. 2005, 16(10): 1301-1304.

摘要 ( )

可视化

The synthesis of (S)-2-(3-arylacrylamido)-3-{4-[2-(5-methyl-2-phenyloxazol-4-yl)ethoxy]phenyl}propanoic acids is described. Their structures were confirmed by ¹H-NMR.

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Synthesis and Antibacterial Activity of New Cephalosporin Compounds

De Cai FU, Feng Ming CHU, Zong Ru GUO

中国化学快报. 2005, 16(10): 1305-1308.

摘要 ( )

可视化

Five new cephalosporin compounds were designed and synthesized, and the antibacterial activities were evaluated by the standard serial 2-fold agar dilution method in vitro.The results showed that the activities of the compounds Ⅰa and Ⅰb against ESBL E. coli and K.pneumoniae are comparable to those of Cefepime.

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Phase Transfer Catalyzed Synthesis and Antibacterial Activity of Water-soluble S-Triazolo[3,4-b][1,3,4]thiadiazoles Containing Piperazine Group

Guo Qiang HU, Wen Long HUANG, Hai WANG

中国化学快报. 2005, 16(10): 1309-1312.

摘要 ( )

可视化

6/3-(4-Chlorophenyl)-s-triazolo[3, 4-b] [1, 3, 4]thiadiazoles (2a-e) and (5a-e) were synthesized respectively by intermolecular cyclization of 5-aryl/4-chlorophenyl-4-amino-3-mercapto-1, 2, 4-triazoles (1a-e) and (4) with 4-chlorobenzoic acid/aryl acids, which were condensed with piperazine under phase transfer catalyst TBAB to yield the corresponding free bases of monopiperazine derivatives and followed to form water-soluble salts (3a-e) and (6a-e)with hydrochloric acid in good yields. The in vitro biological results showed that piperazine group conjugated with the above fused heterocycles played an important role in antibacterial activity. The structures of novel compounds were confirmed by IR, ¹H NMR, MS and elemental analysis.

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Trifluoromethylation of Carbonyl Compounds with Sodium Trifluoroacetate

Ying CHANG, Chun CAI

中国化学快报. 2005, 16(10): 1313-1316.

摘要 ( )

可视化

In the presence of copper (Ⅰ) halide as catalyst, a variety of carbonyl compounds could be trifluoromethylated with sodium trifluoroacetate to give the corresponding alcohols in moderate to high yields.

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Silicon Effect on the Enantioselective Transcyanation of Acetyltrimethylsilane Examined by Different Oxynitrilases

Sen Lin LIU, Min Hua ZONG, Shun Rong HUANG

中国化学快报. 2005, 16(10): 1317-1320.

摘要 ( )

可视化

The synthesis of optically active (R)-and (S)-2-trimethylsilyl-2-hydroxyl propionitrile by enantioselective transcyanation of acetyltrimethylsilane with acetone cyanohydrin was successfully carried out using defatted plum, loquat, peach, almond or apple seed meals as (R)-oxynitrilase source and using Manihot esculenta leaves as (S)-oxynitrilase source in a biphasic system with good conversion and high enantiomeric excess. Comparative study demonstrated that silicon atom in substrate showed great effect on the reaction and due to the unique characteristics of silicon atom, both the substrate conversion and the product e.e. of the transcyanation of acetyltrimethylsilane were much higher than those of its carbon counterpart 3,3-dimethyl-2-butanone for all examined oxynitrilases.

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Synthesis of Novel Monophosphoramidite Ligands Derived from L-Proline for Rh-catalyzed Asymmetric Hydrogenation of α-Dehydroamino Acid Esters

Qing Heng ZENG, Xiang Ping HU, Xin Miao LIANG, Zhuo ZHENG

中国化学快报. 2005, 16(10): 1321-1323.

摘要 ( )

可视化

Two novel monophosphoramidites were synthesized through a five-step transformation from commercially available L-proline. In the Ph-catalyzed asymmetric hydrogenation of α-dehydroamino acid derivatives, ligand (S_c,R_a)-1b showed good enantioselectivity and up to 91% e.e. was obtained.

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Synthesis,Characterization and Properties of Poly (aryl amides) Containing Methoxy Substituted Phthalazinone Moiety

Pei WANG, Jian Dong LIU, Xi Gao JIAN

中国化学快报. 2005, 16(10): 1324-1326.

摘要 ( )

可视化

A novel aromatic diamine, 1, 2-dihydro-2-(4-aminophenyl)-4-[3-methoxy-4-(4-amino-phenoxy)]-2, 3-phthalazin-1-one (OO-DA) containing aza heterocyclic structure was synthesized from the bisphenol-like monomer in two steps and used for preparing new aromatic polyamides with high inherent viscosity of 0.89-1.03 dL·g^-1. The structures of diamine and polymers obtained were confirmed by MS, FT-IR, WAXD and ¹H-NMR. The synthesized polymers exhibited high glass transition temperature in the range of 281-307℃ and good solubility in polar solvents.

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Solvent-free Synthesis of Dihydrofuran-fused[60]Fullerene Derivatives by High-speed Vibration Milling

Xin CHENG, Guan Wu WANG, Yasujiro MURATA, Koichi KOMATSU

中国化学快报. 2005, 16(10): 1327-1329.

摘要 ( )

可视化

Solvent-free reactions of 1, 3-cyclohexanedione, 5, 5-dimethyl-1, 3-cyclohexanedione,2,4-pentanedilne and ethyl C₆₀ in the presence of Mn(OAc)₃·2H₂O and ceric ammonium nitrate (CAN) under the high-speed vibration milling conditions afforded dihydrofuran-fused C₆₀ derivatives. CAN is the better oxidant than Mn(OAc)₃·2H₂O in these mechanochemical reactions.

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Synthesis of a Novel Conjugate of Bromoarene and Polyamide Containing N-Methylimidazoles

Dan LIU, Gu YUAN

中国化学快报. 2005, 16(10): 1330-1332.

摘要 ( )

可视化

A novel DNA cleavage conjugate of bromoarene and polyamide containing three N-methylimidazole rings was synthesized by the chloroform reaction and the DCC/HOBT coupling reaction.

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A Novel Efficient Method for Synthesis of β-Organoseleno Substituted Allyl Sulfoxides

Zhi Meng WU, Ru Wei SHEN, Lu Ling WU, Xian HUANG

中国化学快报. 2005, 16(10): 1333-1334.

摘要 ( )

可视化

Hydroselenation of 1, 2-allenyl sulfoxides give 2-organoseleno substituted allyl sulfoxides in high yields and the reaction is absolute regioselective.

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Chemical Modification of Tryptophan Residues in Pullulanase

Li Rong TENG, Hao FAN, Yuan Yuan ZHANG, Qi YU, Yue Feng HUANG, Lan Ying LIU

中国化学快报. 2005, 16(10): 1335-1336.

摘要 ( )

可视化

Tryptophan(Trp)residues in pullulanase have been chemically modified with N-bromossuccinimide(NBS). The results of ultraviolet spectra indicated that there are 18 Trp residues in pullulanase and nine of them are located on the surface of the enzyme. Three of these Trp residues are none-essential residues which showed the fastest reaction speed by Zhou's plot. Two of the seven relative faster reacting residues are essential for the activity of the enzyme. The other eight are none-reactive residues with lowest reaction speed.

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New Diarylheptanoid from the Barks of Alnus japonica Steudel

Hyun Jung KIM, Kwang Ho KIM, Seung Hwan YEOM, Min Kee KIM, Jae Geul SHIM, Hyun Woo LIM, Min Won LEE

中国化学快报. 2005, 16(10): 1337-1340.

摘要 ( )

可视化

A new diarylheptanoid glycoside, 1,7-bis-(3,4-dihydroxyphenyl)-5-hydroxyheptane-3-O-β-D-xylopyranoside (1), together with nine known diarylheptanoids (2-10) were isolated from the fresh bark of Alnus japonica which is a species of the genus Alnus species, growing throughout Korea.

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A New Compound from the Bud of Chrysanthemum indicum L.

Wen Ming CHENG, Tian Pa YOU, Jun LI

中国化学快报. 2005, 16(10): 1341-1342.

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可视化

A new bicyclic spiroketone was isolated from the bud of Chrysanthemum indicum L.The chemical structure was elucidated as (1R, 9S, 10S)-10-hydroxyl-8 (2', 4'-diynehexylidene)-9-isovaleryloxy-2, 7-dioxaspiro[5, 4] decane based on the X-ray crystallography.

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Two New Polyoxygenated Cyclohexenes from Uvaria kweichowensis

Qiong Ming XU, Zhong Mei ZOU, Li Zhen XU, Shi Lin YANG

中国化学快报. 2005, 16(10): 1343-1346.

摘要 ( )

可视化

Two new polyoxygenated cyclohexenes, kweichowenol A and B were isolated from the leaves of Uvaria kweichowensis and their structures were established on the basis of their spectral data.

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A Novel Protein Found in Selenium-rich Silkworm Pupas

De Cong HU, Qiong LIU, Hui Bi XU, Hai Rong CUI, Si Wang YU, Xiao Da YANG, Kui WANG

中国化学快报. 2005, 16(10): 1347-1350.

摘要 ( )

可视化

A novel protein was isolated and characterized in selenium-rich silkworm pupas. The peptide mass fingerprint of the protein was found to be new. Partial amino acid sequencing also confirmed to be a new protein. The novel protein had a molecular mass of about 80 kDa in the SDS-PAGE.

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Petatrichol B:A Pentacyclic Triterpenoid with Unusual Skeleton from Petasites tricholobus

Wei Dong XIE, Ping Lin LI, Zhong Jian JIA

中国化学快报. 2005, 16(10): 1351-1353.

摘要 ( )

可视化

A novel pentacyclic triterpenoid, petatrichol B, was isolated from the rhizome of Petasites tricholobus. Its structure was established by means of spectroscopic analysis (EIMS,HRSIMS, IR, 1D NMR and 2D NMR).

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Substructure Prediction from Infrared Spectra by Using Support Vector Machines

Jun Hong LIU, Min Chun LU, Fu Sheng NIE, Xiao Yu FENG, Meng Long LI

中国化学快报. 2005, 16(10): 1354-1356.

摘要 ( )

可视化

The potential of support vector machines (SVMs) for the substructure elucidation of infrared spectra have been investigated. The trained SVMs can identify the 16 substructures with high accuracy.

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Glucose Biosensor Based on Carbon/PVC-COOH/Ferrocene Composite with Covalently Immobilized Enzyme

Chun Xiang LI, Yun Long ZENG, Chun Ran TANG

中国化学快报. 2005, 16(10): 1357-1360.

摘要 ( )

可视化

A carbon/PVC-COOH/ferrocene composite electrode used for the determination of glucose has been prepared. The ferrocene acted as mediator was incorporated into the PVC-COOH polymer and the leakage could be prevented. The presence of carboxyl groups on the electrode surface allowed immobilizing enzyme via EDC and NHS. The ratio of PVC-COOH to graphite powder (w/w) has been studied. Amperometric determination of glucose has been performed at potential of 0.30 V vs SCE. The response time was <15 s. The linear response range was of 0.1-20 mmol/L with a detection limit of 48 μmol/L.

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A New Property of Conjugated Polymer PFP:Catalytic Degradation of Methylene Blue Aqueous Solution

Bi Tao SU, Shi Xiong SHE, Shi Xiong MIN, Zhan Ying MA

中国化学快报. 2005, 16(10): 1361-1363.

摘要 ( )

可视化

A new property of conjugated polymer poly(furancarbinol-co-phenol)(PFP) was studied.The target copolymer was used as a catalyst after proper heating treatment. And dye methylene blue (MB) could be fully degraded and largely mineralized on PFP, under natural light or even in dark, in a few minutes. Furthermore, the catalytic activity could be preserved after several runs and the catalyst was readily separated. The effect of calcination temperature was also observed.

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Temperature-dependent Kinetics on Laser Induced Photolysis of Aqueous CS₂-HONO Solutions

Hao Jie FANG, Cheng Zhu ZHU, Wen Bo DONG, Hui Qi HOU

中国化学快报. 2005, 16(10): 1364-1366.

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可视化

A laser photolysis/transient absorption technique has been employed to investigate the photolysis kinetics of aqueous CS₂-HONO solutions at 355 nm. Spectral analysis shows that CS₂OH will react with HONO to form CS₂OH-HONO. Temperature dependent rate coefficients for the reaction are reported for the first time. The following Arrhenius expressions adequately summarize the kinetic data obtained over the temperature range 273-313 K (units are L·mol^-1·s^-1):ln k=(31.6±0.6)-{(4.1±0.2)×10³/T}, and the activation energy in unit of kJ·mol^-1 is 32.47with the temperature accuracy 0.2 K.

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Minor Groove Binding between Norfloxacin and DNA Duplexes in Solution:A Molecular Dynamics Study

Guo Zheng MA, Ke Wen ZHENG, Yong Jun JIANG, Wen Na ZHAO, Shu Lin ZHUANG, Qing Sen YU

中国化学快报. 2005, 16(10): 1367-1370.

摘要 ( )

可视化

Molecular dynamics were used to investigate the interaction between norfloxacin and DNA duplex. The results showed that norfloxacin was situated in the minor groove of DNA,binding to the TCGA region of d[ATATCGATAT]₂. Specific hydrogen bonds were formed between norfloxacin and guanine base of DNA during the 2 ns MD, which may be the reason for the preferentiality of quinolone antibacterial towards the guanine base of DNA duplex.

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Photochromism of 36-Armed Liquid Crystalline Dendrimer

Jian Qiang LIU, Qi Zhen ZHANG, Jing Zhi ZHANG, Wan Guo HOU

中国化学快报. 2005, 16(10): 1371-1374.

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可视化

The photochromism of a 36-armed liquid crystalline dendrimer D6 was briefly described in this paper. The molar absorption coefficient, photoisomerization and photo back-isomerization of D6 in solution were investigated by UV/Vis absorption spectra. The results indicate that the photochromism and photo back-isomerization of D6 in chloroform (CHCl₃) and tetrahydrofuran (THF) solutions are in accordance with the first order kinetics. The photochromism rate constants of D6 are 10^-1 s^-1, it is 10⁷ times larger than that of side-chain liquid crystalline polymers containing the same azobenzene moieties.

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Energy Storage Properties of Phase Change Materials Prepared from PEG/CPP

Ya Nan ZANG, En Yong DING

中国化学快报. 2005, 16(10): 1373-1378.

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可视化

New kinds of solid-solid phase change materials have been prepared in our laboratory.In these materials, the rigid polymer chlorinated polypropylene is taken as skeletons and the flexible polymer polyethylene glycol 6000 and polyethylene glycol 10000 are taken as functional chains. Results show that chlorinated polypropylene grafted by polyethylene glycol 10000 has greater enthalpy than chlorinated polypropylene grafted by polyethylene glycol 6000.

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A Novel Method for the Preparation of Octyl Bonded Styrene-divinylbenzene HPLC Packings

Yu LIU, Shan Wei W ANG, Yu Min ZUO

中国化学快报. 2005, 16(10): 1379-1382.

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可视化

Monodisperse octyl bonded poly(styrene-divinylbenzene) (C8-PS-DVB) beads were prepared via a single-step swelling and polymerization method. Fourier transform infrared and chromatographic evaluation were used to confirm the reaction between the octene and divinylbenzene.

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Mechanical Properties of Silicone Rubber Using Carbosilane Dendrimers as the Cross-linker

Shi Gui ZHAO, Chuan Jian ZHOU, Jian Ming ZHANG, Sheng Yu FENG

中国化学快报. 2005, 16(10): 1383-1385.

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可视化

Peroxide-cured high-temperature vulcanized (HTV) silicone rubber was prepared by using allyl-capped carbosilane dendrimers, in which the core molecule is Si(CH₂CH=CH₂)₄, as the cross-linker. It showed that this kind of allyl-capped carbosilane dendrimer improved the mechanical properties of silicone rubber.

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High-molecular-weight Polyethylene Prepared with Early Transition Metal Catalysts

Jian Jun YI, Wei ZH AO, Zhen Hua JING

中国化学快报. 2005, 16(10): 1386-1388.

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可视化

Early transition metal catalysts[N,N]MCln, in which[N,N] is N-(2,6-diisopropylphenyl)pyridine-2-carboxaldimine (C₁₈H₂₂N₂, NN-1), N-(2,6-diisopropylphenyl)-6-methylpyridine-2-carboxaldimine (C₁₉H₂₄N₂, NN-2), N-(2,4,6-trimethylphenyl)pyridine-2-carboxaldimine (C₁₅H₁₆N₂,NN-3), M is Ti, Zr and V, and n is 3 or 4, e.g.[NN-1]TiCl₄ 1a,[NN-1]ZrCl₄ 1b,[NN-1]VCl₃ 1c,[NN-2]TiCl₄ 2a,[NN-2]ZrCl₄ 2b,[NN-2]VCl₃ 2c,[NN-3]TiCl₄ 3a have been investigated to catalyze ethylene polymerization in the presence of methylaluminoxane (MAO). It was noteworthy that polyethylene characteristic of high molecular weight and wide or bimodal molecular weight distribution was formed with moderate to high activities.

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Preparation of Dendritic Carbosilane-supported Palladium Catalyst and Its Catalytic Activity in Hydrogenation of Organic Compounds

Chun Fang LI, Dong Xiang LI, Zhi Jie ZHANG, Sheng Yu FENG

中国化学快报. 2005, 16(10): 1389-1392.

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可视化

The preparation of palladium complex from PdCl₂·2H₂O and earbosilane dendrimers with peripheral aminopropyl groups was described. The compound obtained was characterized by IR, ¹H NMR, X-ray photoelectron spectroscopy (XPS) and inductively coupled plasma atomic emission spectrometric (ICP-AES) spectroscopy respectively. The metal complex was employed as catalyst in hydrogenation of organic compounds. The high activity of the complex was probably due to the formation of the eoordinatively unsaturated palladium.

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Study on the Precursor Phase Composition of Fused Iron Catalyst for Fischer-Tropsch Synthesis

Ju Li SHEN, Hua Zhang LIU, Xiao Nian LI, Weng Feng HAN, Yi Fan ZHENG

中国化学快报. 2005, 16(10): 1393-1396.

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可视化

The effect of the precursor composition of fused iron catalyst on the performance of Fischer-Tropsch synthesis was investigated. XRD, BET and CO₂ adsorption experiments were carried out to provide better insight into the relationship therein. The results showed that the selectivity of C₅₊ hydrocarbon products was dependent on the mole ratio of Fe²⁺/Fe³⁺, which was represented by a hump-shaped curve. Catalysts with precursors containing Fe₃O₄ phase favored the magnetite spinal formation during F-T reaction, while Fe_1-xO-based catalysts were more likely to favor the formation and growth of the iron carbide crystals.

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Efficient DNA Cleavage by Copper (Ⅱ) Complex Derived from 1,1'-Dimethyl-2,2'-biimidazole Ligand

Rui Li SANG, Pin YANG

中国化学快报. 2005, 16(10): 1397-1400.

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可视化

The cleavage of DNA (pBR322) by[Cu(Dime-biim)₂(H₂O)](ClO₄)₂ (Dime-biim=1, 1'-dimethyl-2, 2'-biimidazole) was investigated. The results showed that the complex could cleave DNA efficiently at pH=8.0 and 37℃.

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Synthesis and Absorption Properties of New Na Specific Adsorbent Li_1+xAl_xTi_2-x(PO₄)₃

Jian Zhi SUN, Xiao Chuan DENG, Shu Bin WEI, Fa Qiang LI, Pei Hua MA

中国化学快报. 2005, 16(10): 1401-1404.

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可视化

A new kind of adsorbent Li_1+xAlxTi_2-x(PO₄)₃ was synthesized by solid state reaction method. The influence of the content of doping aluminum on the adsorbent Li_1+xAl_xTi_2-x(PO₄)₃was investigated by XRD, while the morphology of powders was observed by SEM. The investigation of the adsorption properties showed that the adsorbent can selectively adsorb sodium with the adsorption capacity of 11.76 mg/g. The optimum conditions of adsorption are at pH 10.0-11.0 in LiCl solution.

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Synthesis and Crystal Structure of a Novel Copper (Ⅱ) Complex with Acetylenedicarboxylate and 2,2'-Bipyridine

Ming Xing LI, Min SHAO, Hui DAI, Bao Li AN, Wen Cong LU, Yu ZHU, Chen Xia DU

中国化学快报. 2005, 16(10): 1405-1408.

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可视化

The title compound[Cu (ADC) (2, 2'-bipy)]_n (ADC=C₂(COO)₂^2-) was prepared and characterized by elemental analysis, IR spectroscopy, X-ray analysis, respectively. The analysis of the crystal structure reveals that the copper atom is five-coordinated with two nitrogen atoms of 2, 2'-bipy and three oxygen atoms of different acetylenedicarboxylate dianions. ADC as bridging ligands link the Cu (Ⅱ) ions, forming coordination polymer structure.

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Preparation and Application of a Nanocomposite (MPNS/SMA) in Leather Making

Hui PAN, Zhi Jun ZHANG, Hong Xin DANG

中国化学快报. 2005, 16(10): 1409-1412.

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可视化

A nanocomposite of MPNS/(Styrene-maleic anhydride) was prepared by the polymerization of methacryloxypropyl nano SiO₂ (MPNS), styrene (ST) and maleic anhydride (MA) with benzoyl peroxide (BPO) as initiator in toluene. The prepared samples were characterized by Fourier transform infrared spectroscopy (FT-IR) and transmission electron microscope (TEM). Meanwhile, the nanocomposite was applied as a tanning agent in leather making and the results showed that leather treated with MPNS/SMA nanocomposite has excellent quality.

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Synthesis and Magnetic Properties of Fe (Ⅱ) and Nd (Ⅲ) Complexes of Poly (N-2-thiazolylacrylamide)

Ping ZHENG, Wei Lin SUN, Zhi Quan SHEN

中国化学快报. 2005, 16(10): 1413-1416.

摘要 ( )

可视化

N-2-Thiazolylacrylamide (NTA) was polymerized by a radical route to obtain the polymer in good yield. The polymer with a pendent heterocyclic group is soluble in common organic solvents, which allow to prepare the corresponding metal complexes with higher loads easily. FTIR, ¹H NMR, elemental analysis, and energy-dispersive X-Ray spectroscopy (EDX)were applied to characterize these materials. The magnetic behavior of Fe(Ⅱ) and Nd(Ⅲ)complexes of poly(N-2-thiazolylacrylamide) was examined by a PPMS-9T magnetometer,exhibiting the characteristics of a soft ferromagnet. It is found that the Nd(Ⅲ) complex has an extremely high relative saturation magnetization of 35 emu/g.

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Theoretical Study on the Bicyclo[4.1.0]heptatriene Rearrangement in a Molecular Container

Zuo Yin YANG, Xiu Li WANG, Ju WANG, Jing Chang ZHANG, Wei Liang CAO

中国化学快报. 2005, 16(10): 1417-1420.

摘要 ( )

可视化

The conversion process from bicyclo[4.1.0]heptatriene (BCT) to 1,2,4,6-cycloheptatetraene (CHTE) within a molecular container was studied with AM1 method, and single point energies for all stationary points were evaluated by B3LYP and HF methods. The conversion potential barrier for the encapsulation complex became smooth when compared with that for the rearrangement in free state. The influences of the inner phase of the molecular container on the conversion process were discussed.

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2005年, 第16卷, 第10期　刊出日期：2005-10-20

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2005年, 第16卷, 第10期 刊出日期：2005-10-20

2005年, 第16卷, 第10期　刊出日期：2005-10-20