中国化学快报

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Photoinduced Electron Transfer Reaction between N,N-Dimethylaniline and 7,7-Dichloronorcarane

Wei ZHANG, Li YANG, Long Min WU, You Cheng LIU, Zhong Li LIU

中国化学快报. 1998, 9(06): 509-512.

摘要 ( )

可视化

U.V. irradiation of N, N-dimethylaniline (DMA) in the presence of 7,7-dichloronorcarane (DCN) in acetonitrile solution produces N-methylaniline, 4,4'-methylenebis-(N,N-dimethyIaniline), N-(4'-N',N'-dimethylaminobenzyl)-N-methylaniline and 7-chloronorcarane as the major products. A photoinduced electron transfer mechanism is proposed.

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The Oxirane Ring Opening of 2,3-endo-epoxybicyclo[3. 2 .0] hept-6-one by Amines at Alumina Surface

Yan Mei HE, Guo Hao XIE, Ai Lian ZHENG, Yuan Liu WU

中国化学快报. 1998, 9(06): 513-514.

摘要 ( )

可视化

Stereospecific (trans) and regioselective nucleophilic opening of the title epoxide (Ⅰ) by different amines at the alumina surface are described.

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Reactions of [60]Fullerene with Di(azidomethyl) benzenes

Chuan Feng CHEN, Ji Sheng LI, Gai Jiao JI, Dao Ben ZHU

中国化学快报. 1998, 9(06): 515-517.

摘要 ( )

可视化

A diazafulleroid derivative with adjacent 5-6 junctions has been synthesized by the regioselective addition of 1,2-di(azidomethyl) benzene to [60]fullerene. Reaction of [60]fullerene with 1,4-di(azidomethyl) benzene in refluxing chlorobenzene gave a copolymer.

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A New Synthesis of 1-(ω-Haloalkyl)-Imidazoles

Jia Ming YAN, Zong Lin JLANG, Lin ZHANG, Ru Gang XIE

中国化学快报. 1998, 9(06): 519-520.

摘要 ( )

可视化

A new synthesis of 1-(ω-haloalkyl)-imidazole has been developed. The synthesis involves a Hoffmann-type elimination of the 2-cyanoethyl group from imidazolium salts obtained by the reaction of α,ω-dihalide with 1-(2-cyanoethyl)-imidazole.

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Synthesis of α,β-Unsaturated Ketones using Potassium fluoridealumina Catalyst by Microwave Irradiation

Xiao Hui ZHANG, Da Bin GAO, Ming GUO, Shan Zhen YAN

中国化学快报. 1998, 9(06): 521-522.

摘要 ( )

可视化

Microwave irradiation can accelerate the rate of the synthetic reaction of α,β-unsaturated ketones by using KF-Al₂0₃ as catalyst. The rate enhancement of the reaction is 360-860 fold.

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Redox Reaction of Disulfide/Polyaniline in Aqueous Solution

Lei YU, Xian Hong WANG, Ji LI, Xia Bin JING, Fo Song WANG

中国化学快报. 1998, 9(06): 523-526.

摘要 ( )

可视化

The cleavage and formation of the disulfide bond of 2,5-dimercapto-l,3,4-thiadiazole (DMcT) were examined in an aqueous solution of pH value from 0 to 14 with and without polyaniline (PAn). The redox reaction of DMcT was accelerated by PAn in acidic condition. The cell using this anodic material was set-up and characterized in aqueous electrolyte.

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Chiral Ligands from Abrine.4. Hete rocycle-Containing 1,2,3,4-Tetrahydro-β-Carboline Methyl Ester Used for C atalysis of Enantioselective Addition of Diethylzinc to Benzaldehyde

Bi Tao ZHAO, Hua Jie ZHU, Xing HONG, Jun ZHOU, Xiao Jiang HAO

中国化学快报. 1998, 9(06): 527-528.

摘要 ( )

可视化

Four 1,2,3,4-tetrahydro-β-carboline amino acid esters with a heterocycle at the C-l position were used as chiral ligands in the enantioselective addition reactions. The different positions of the heteroatoms gave different effects, and medium but opposite enantioselectivity was recorded.

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The Synthesis of Aromatic Hydrazones as Nitrogen-Containing Prostaglandin Congeners

Guo Hao XIE, Yan Mei HE, Yuan Liu WU

中国化学快报. 1998, 9(06): 529-531.

摘要 ( )

可视化

We synthesized a series of hydrazones, a novel type of nitrogen-containing prostaglandins, from different aromatic hydrazines and variant 2-substituted amino-3-hydroxy bicyclo [3.2.0]hept-6-ones Ⅳ.

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Synthesis of the Acetate of a New Phenolic Glycoside, Anacardoside,from Semecarpus anacardium and its Diastereomer

Yu Lan WANG, Cheng He ZHOU, Meng Shen CAI

中国化学快报. 1998, 9(06): 533-536.

摘要 ( )

可视化

the acetate of a novel phenolic glycoside, 1-0-β-D-glucopyranosyl-(1→6)-β-D-glucopyranosyloxy-3-hydroxy-5-methylbenzene, anacardoside, from the fruits of Semecarpus anacardium，and its diastereomer were first synthesized using Koenigs-Knorr method from D-glucose through six steps with total yields 33% and 16% respectively.

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A New Isoflavone Glucoside from Astragalus membranaceus

Zheng Zhong CAO, Yuan CAO, Yi Jun YI, Yong Ping WU, Zong Kang LENDu LI, Noel L. OWEN

中国化学快报. 1998, 9(06): 537-538.

摘要 ( )

可视化

A new isoflavone glucoside, 3'-methoxy-5'-hydroxy-isoflavone-7-0-β-D-glucoside, was isolated from the roots of Astragalus membranaceus and its structure was elucidated by spectroscopic data.

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WA, a new Antifungal Antibiotic from a Soil Fungus Strain 38

Jun YANG, Xiu Lan QI, Wen LI, Gang SHAO, Xin Sheng YAO, S. KITANAKA

中国化学快报. 1998, 9(06): 539-540.

摘要 ( )

可视化

A new antifungal antibiotics, WA, was isolated from the secondary metabolites of soil fungus strain 38，and its structure was elucidated as 4-(2-hydroxy-3-butynoxy)benzoic acid by means of the spectral data (¹H-and ¹³C-NMR, DEPT, ¹H-¹H COSY, ¹H-¹³C COSY, HMBC).

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Eucaglobulin, A New Complex of Gallotannin and Monoterpene from Eucalyptus globulus

AI Jun HOU, YAN Ze LIU, ZHONG Wen LIN, HAN Dong SUN

中国化学快报. 1998, 9(06): 541-543.

摘要 ( )

可视化

Eucaglobulin 1,a new complex of gallotannin and monoterpene, was isolated from the leaves of Eucalyptus globulus. Its structure was determined by spectral methods.

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A New Bisabolane Sesquiterpene from Cremanthodium Discoideum

Ying ZHU, Qi Xiu ZHU, Zhong Jian JLA

中国化学快报. 1998, 9(06): 545-547.

摘要 ( )

可视化

A new bisabolane sesquiterpene was isolated from Cremanthodium discoideum. The structure was elucidated by spectroscopic methods including the 2D-NMR technique.

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Metabolites of Icariin in Rat Bile Following Oral Administration

Feng QIU, Qing Song TAN, Ying Jie CHEN, Yoshihiro KANO, Xin Sheng YAO

中国化学快报. 1998, 9(06): 549-552.

摘要 ( )

可视化

The biliary metabolites of orally administered icariin in rats were investigated. Two metabolites B-l and B-2 were isolated and identified as icaritin 3-0-α-L-rhamnopyranosyl-7-0-β-D-glucopyranuronoside and icariside Ⅱ，respectively, on the basis of chemical and spectroscopic evidences.

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Chemical Ionization Mass Spectrometry of Pertrimethylsilylated Desulphoglucosinolates

Qin Ying DENG

中国化学快报. 1998, 9(06): 553-556.

摘要 ( )

可视化

The chemical ionization mass spectra of ten different glucosinolates isolated from rape seed have been studied. More intense diagnostic ions were identified than in the electron impact mass spectra. The method is suitable for the structure analysis of mixture of glucosinolates.

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Polarographic Catalytic Wave of Lysozyme

Wei GOU, Ya Ni YANG Jun, Feng SONG

中国化学快报. 1998, 9(06): 557-560.

摘要 ( )

可视化

This paper reports a polarographic catalytic wave of lysozyme (LE) in the presence of KI0₃. The mechanism of the catalytic wave was discussed. It is illustrated by the catalytic wave of LE that, besides the Brdicka current, there exists a new kind of catalytic wave of protein.

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Quantitation of PCR Products by Capillary Electrophoresis in a Single Run

Fu Tian HAN, Bing Cheng LIN

中国化学快报. 1998, 9(06): 561-563.

摘要 ( )

可视化

A simple method was developed to quantify DNA fragments such as PCR (polymerase chain reaction) products by capillary electrophoresis. Restraint fragments with different lengths were employed as internal standards in the study, which makes it possible for the evaluation of the quantity of PCR product in a single run.

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Chiral Separation of Esmolol and Terazosin by Cyclodextrinmodified Capillary Zone Electrophoresis

Yi Yang Dong, Xue Qin REN, Ai Jin HUANG, Yi Liang SUN, Zeng Pei SUN

中国化学快报. 1998, 9(06): 565-568.

摘要 ( )

可视化

Cyclodextrin-modified CZE was applied to the chiral separation of two basic drugs, i.e., esmolol and terazosin. Selector screening and concentration optimization experiments were performed. Resolution 3.1 for esmolol, 1.2 for terazosin were achieved when using 60 mmol/L γ-CD and 60 mmol/L DM-β-CD, respectively, in 50 mmol/L pH 2.5 sodium phosphate buffer.

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A Novel and Convenient Assay for the Determination of OH Produced by Fenton Reaction

Zhuo Bin YUAN, Zhi Ru MA

中国化学快报. 1998, 9(06): 569-571.

摘要 ( )

可视化

A novel, simple and convenient method for the determination of hydroxyl radicals is established. Hydroxyl radicals produced by Fenton reaction is trapped by spin trap reagent phenyl-t-butyl nitrone (PBN), and the free radical adduct of PBN can be detected by single sweep oscillopolarography, with its second order derivative cathodic wave at -0.52V vs SCE. The optimum experimental conditions for the determination is discussed, and the scavenging effects of some compounds on OH was also studied.

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The Mixed LB film of Crowned Phthalocyanine and Picrate

Xi You LI, Hui Jun XU

中国化学快报. 1998, 9(06): 573-575.

摘要 ( )

可视化

The mixed LB film of mono crown ether substituted phthalocyanine (CPc) and potassium picrate (PiK) were prepared by adding potassium picrate in subphase. The π-A isotherms show that the addition of PiK in subphase increases the orientation angles of phthalocyanine in monolayers. The absorption spectra revealed that the monolayer can be transferred to substrates easily. X-ray diffraction results show that the mixed film possesses the same thickness as that of pure phthalocyanine film.

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New Catalyst for the Copolymerization of Styrene with Carbon Monoxide

Rong Hua ZHENG, Yi Feng ZHANG, Li Ming JIANG, Zhi Quan SHEN

中国化学快报. 1998, 9(06): 577-578.

摘要 ( )

可视化

Neodymium phosphonate [Nd(P₂₀₄)₃] combined by di(n-butyl) magnesium [Mg(n-Bu)₂] with hexamethylphosphoramide (HMPA) was first found to be an effective catalyst. The results of infrared spectrum and elemental analysis showed that the copolymers containing carbonyl group were produced.

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Catalytic Activity and Stability of Mo₂N in CO Oxidation

Guo Huang XIE, Zhi Cheng JIANG, Ting Fang BAI, Han Qing WANG

中国化学快报. 1998, 9(06): 579-581.

摘要 ( )

可视化

Molybdenum nitride powder with 115m²g^-1 of Sg has been prepared by a temperature programmed reaction of MoO₃ in H₂/N₂ mixture. It exhibited high catalytic activity in CO oxidation at low temperatures. DTA in airflow showed that the crystal phase of Mo₂N was maintained under 500℃. The suitable operation temperature is below 500℃ in CO oxidation.

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An Ab Initio Study of N₂O Decomposition on MgO Catalyst

Xin LU, Xin XU, Nan Qin WANG, Qian Er ZHANG

中国化学快报. 1998, 9(06): 583-586.

摘要 ( )

可视化

Ab initio calculations based on density functional theory have been used to study the decompsition of N₂O on MgO. The reaction is predicted to occur on 0_3c and O_4c atoms, but not on 0_5c atoms, with an activation barrier of 25-27 kcal/mol, in agreement with the experimental value of 35 kcal/mol. Natural bond orbital analysis shows that the reaction leaves O ad-atoms on those surface O anions to form a peroxide-like "0₂^2-" species. The O-O bond stretching frequency is predicted to be in the range from 820 cm^-1 to 825 cm^-1.

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Miscibility and Crystallization of PHB/PMA Blends

Yu Xian AN, Li Song DONG, Yu Gang ZHUANG, Zhi Shen MO, Zhi Liu FENG

中国化学快报. 1998, 9(06): 587-590.

摘要 ( )

可视化

The miscibility, crystallization behavior and morphological structure of PHB/PMA blends have been studied by the differential scanning calorimeter (DSC) and polarized optical microscopy (POM). The chemical repeat units of the two components of the blend are isomers. The results indicate that PHB and PMA are miscible in the melt. The addition of PMA into PHB results in a depression in the spherulite growth rate of PHB. With increasing PMA content in the blends, the texture of PHB spherulite becomes more open.

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Polymerization of Dicyclopentadiene by Reaction Injection Molding

Hua Ming LI, Zhong Ming JIANG, Yu Xiong WU, Ye Qiu LIU, Peng Sheng LIU

中国化学快报. 1998, 9(06): 591-593.

摘要 ( )

可视化

Dicyclopentadiene was polymerized by reaction injection molding (RIM) using a catalyst system based on molybdenum (Ⅴ) chloride and anhydrous aluminum chloride and triethylaluminum. The effect of the reaction temperature on the polymer network and the type of the polymerization were discussed.

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Expansion Reaction of μ-FcCCHCo₂(CO)₆ with Benzylideneacetonetricarbonyliron, and Molecular Structure of μ3 -FcCHCFeCo₂(CO)₉

Shu Lin WU, Er Run DING, Jie ZHANG, Zhuan Yun ZHAO, Yuan Qi YIN, Jie SUN

中国化学快报. 1998, 9(06): 595-597.

摘要 ( )

可视化

The vinylidene-bridged cluster μ₃-FcCHCFeCo₂(CO)₉ 2 was prepared by the expansion reaction of ferrocenyl-acetylene dicobalt complex μ-FcCCHCo₂(CO)₆ 1. Benzylideneacetone-tricarbonyliron [(BDA)Fe(CO)₃] was used as the source of Fe(CO)₃. The molecular structure of the cluster 2 was determined by x-ray structural analysis.

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Crystal Structure, Electrochemical Properties and Third-orderNonlinear Optical Response of 4-Methyloxy benzaldehydeThiosemicarbazone and Its Copper (Ⅱ) Complex

Sheng Yi ZHANG, Yu Peng TIAN, Yin Han ZHANG, Fu Xin XIE, Chun Ying DUAN

中国化学快报. 1998, 9(06): 599-602.

摘要 ( )

可视化

The crystal structure of the title ligand and its copper(Ⅱ) complex was determined by single crystal X-ray diffraction, The electrochemical properties and the third-order nonlinear optical response of the ligand and its copper (Ⅱ) complex were also studied.

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1998年, 第9卷, 第06期　刊出日期：1998-06-20

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1998年, 第9卷, 第06期 刊出日期：1998-06-20

1998年, 第9卷, 第06期　刊出日期：1998-06-20