中国化学快报

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Condensation Reaction of 5, 6-Dihydro-6-methyl-6-piperonyl-2H-pyran-2,4-dione, Ethyl Orthoformate and Substituted Anilines

You Ming WANG, Ke HE, Guo Feng ZHAO, Zheng Ming LI

中国化学快报. 2003, 14(03): 221-224.

摘要 ( )

可视化

Piperonyl methyl ketone was obtained by oxidizing isosafrole with hydrogen peroxide and formic acid. Dianion of ethyl acetoacetate reacted with piperonyl methyl ketone and 5, 6-dihydro-6-methyl-6-piperonyl-2H-pyran-2, 4-dione was prepared, which reacted with substituted anilines in the presence of ethyl orthoformate to obtain 3-anilinomethylene-5, 6-dihydro-6-methyl-6-piperonyl-2H-pyran-2, 4-diones. Their structures were confirmed by ¹HNMR and elemental analysis.

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Mukaiyama Aldol Reaction of 1, 2-Bis(trimethylsiloxy) Cyclobutene Catalyzed by Magnesium(Ⅱ) Iodide

Xing Xian ZHANG, Wei Dong LI, Ben Can TANG

中国化学快报. 2003, 14(03): 225-228.

摘要 ( )

可视化

Efficient Mukaiyama-type aldol reaction of 1, 2-bis(trimethylsiloxy)cyclobutene with aromatic aldehydes catalyzed by MgI₂ is reported. The resulting succinoylation product of aldehyde was converted into the synthetic useful γ-lactone and butenolide derivatives.

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A Facile Glycosylation of Spirostanol Catalyzed by Cadmium Carbonate

Chuan Chun ZOU, Shu Jie HOU, Ping Sheng LEI, Xiao Tian LIANG

中国化学快报. 2003, 14(03): 229-232.

摘要 ( )

可视化

A facile glycosylation for the synthesis of spirostanol glycosides was reported. Using cadmium carbonate as a catalyst in CH₃CN, a series of saponins was synthesized efficiently in a satisfactory yield.

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A Facile Approach to Regioselective 1-O-Deacylation of Peracylated Glycopyranoses

Jia Qiang DONG, Shu Jia ZHANG, Yan Guang WANG

中国化学快报. 2003, 14(03): 233-234.

摘要 ( )

可视化

The regioselective 1-O-deacylation of peracylated glycopyranoses 1a-d with zinc chloride and zinc oxide in THF/MeOH gave the corresponding tetra-O-acylglycopyranoses 2a-d in good yields.

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A Facile Route to Unsymmetrical Sulfide

Ying Hong ZHU, Ping LU, Hui LOU, Xiao Ming ZHENG

中国化学快报. 2003, 14(03): 235-238.

摘要 ( )

可视化

Unsymmetrical sulfides can be generated by the reaction of chlorine substituted aromatic compounds in sulfoxide in the presence of fluorine anion in fair yield. A likely mechanism was proposed.

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Substitution Reactions by Azide and Thiocyanide Anions in Room Temperature Ionic Liquids

Yu Xia LI, Wei Liang BAO, Zhi Ming WANG

中国化学快报. 2003, 14(03): 239-242.

摘要 ( )

可视化

Conducted in the ionic liquids, activated and inactivated halides, acyl chlorides, tosylate, and bezotriazolyl acylates were converted to corresponding azide and thiocyanide compounds in high yields under mild conditions.

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Novel Stereoselective Synthesis of (E)-α,β-Unsaturated Esters by the Tandem Reaction of Deprotonation-Oxidation-Wittig Reaction from Phosphonium and Arsonium Salt

Ruo Jun SUN, Hui JIANG, Zhi Zhen HUANG

中国化学快报. 2003, 14(03): 243-244.

摘要 ( )

可视化

Phosphonium or arsonium salt 1 can undergo the tandem reaction of deprotonation-oxidation-Wittig reaction with alcohol 2 in the presence of sodium hydroxide and manganese dioxide, which affords a general simplified method for the stereoselective synthesis of (E)-α,β-unsaturated esters 3.

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Reverse Atom Transfer Radical Polymerization of (-)-Menthyl Methacrylate

Yong An XU, Hong XUE, Jin Ying DING, Lian Xun GAO, Meng Xian DING

中国化学快报. 2003, 14(03): 245-246.

摘要 ( )

可视化

The reverse atom transfer radical polymerization(RATRP) of (-)-menthyl methacrylate ((-)-MnMA) with AIBN(AIBN/CuCl₂/bipyridine(bipy) or (-)sparteine((-)Sp)=1/2/4) initiating system in THF has been studied. The dependence of the specific rotation on molecular weight was investigated.

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Solid Phase Synthesis of 4H-Pyrimido[2,1-b] Benzothiazol-4-ones from Resin-Bound Cyclic Malonic Ester

Zhan Xiang LIU, Lu Ling WU, Xian HUANG

中国化学快报. 2003, 14(03): 247-248.

摘要 ( )

可视化

The solid phase synthesis of 4H-pyrimido[2,1-b] benzothiazol-4-ones has been reported.

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The First Total Synthesis of 16-Hydroxygeranylgeraniol

Li Zeng PENG, Tian Sheng MEI, Shu Hua LI, Yu Lin LI

中国化学快报. 2003, 14(03): 249-250.

摘要 ( )

可视化

Facile synthesis of 16-hydroxygeranylgeranio 1, a naturally occurring alicyclic diterpene, by alkylation reaction of allylic iodide 3 with phenyl sulfone 4, is described.

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Synthesis of Gingerenone C and 5-Hydroxy-1-(4'-hydroxy-3'-methoxyphenyl)-7-(4"-hydroxyphenyl)-3-heptanone

Shao Bai LI, Yun Gen LIU

中国化学快报. 2003, 14(03): 251-254.

摘要 ( )

可视化

The two diarylheptanoids (E)-1-(4'-hydroxy-3'-methoxyphenyl)-7-(4"-hydroxyphenyl) hept-4-en-3-one 1 (Gingerenone C) and (±)-5-hydroxy-1-(4'-hydroxy-3'-methoxyphenyl)-7-(4"-hydroxyphenyl)-3-heptanone 2 were synthesized from vanillin 3 and 4-hydroxybenzaldehyde 9.

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Stereoselective Synthesis of δ-Selanyl Allylic Alcohols by Hydrozirconation of Propargyl Selenides

Mei Hua XIE, Lu Ling WU, Xian HUANG

中国化学快报. 2003, 14(03): 255-256.

摘要 ( )

可视化

Hydrozirconation of propargyl selenides afford (E)-3-selanyl vinylzirconocenes chlorides 2. Intermediates 2 reacted with aldehydes to obtain δ-selanyl allylic alcohols.

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Highly Active Iron/2.6-bis (imino) pyridyl Catalysts for Ethylene Oligomerization

Hang WANG, Wei Dong YAN, Tao JIANG, Bin Bin LIU, Wen Qing XU, Jian Jiang MA, You Liang HU

中国化学快报. 2003, 14(03): 257-258.

摘要 ( )

可视化

Two novel iron-based catalysts have been synthesized with high catalytic activity (about 10⁸g oligomers/molFe·h) for ethylene oligomerization.

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Design and Synthesis of 6α-Corticosteroid Haptens and Their Bovine Serum Albumin (BSA) Conjugates

Pi SUN, Norihiro KOBAYASHI, Junichi GOTO

中国化学快报. 2003, 14(03): 259-262.

摘要 ( )

可视化

The site of attachment of protein carrier to corticosteroids has great influence on the specificity of produced antibody. In order to obtain highly specific and accurate antibodies for bioimmunoassay determination of cortisol, different tether lengths of 6α-corticosteroid haptens and their BSA conjugates were designed and synthesized.

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Synthesis of Two Blue-light-emitting Complexes with Schiff Base Calixarene as the Ligand

Xiao Qiang WEI, Zhi Yun LU, Ping ZOU, Ming Gui XIE

中国化学快报. 2003, 14(03): 263-266.

摘要 ( )

可视化

Two new blue luminescent zinc and beryllium complexes with Schiff base calixarene derivative as the ligand were prepared. Their luminescent properties were determined, which indicated that they had strong blue fluorescent properties. They also had good solubility and film formation. These new complexes can be used as blue organic electroluminescent materials (OELMs) in organic electroluminescent devices.

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Preparation of Macroporous Poly (vinyl alcohol-co-triallyl isocyanurate) Beads Bearing Aminocarboxylic Acid as Functional Groups by Suspension Polymerization

Hai Tao LI, Ke Yu SHI, Zhi YUAN, Bing Lin HE

中国化学快报. 2003, 14(03): 267-269.

摘要 ( )

可视化

Macroporous poly (vinyl acetate-co-triallyl isocyanurate) beads were prepared with suspension polymerization method. The copolymer beads were then transformed into poly (vinyl alcohol-co-triallyl isocyanurate) by ester exchange reaction. Aminocarboxylic acids were immobilized on the copolymer beads by the esterification of hydroxyl groups with diethyl-lenetriaminepentaacetic bisanhydride. The weak acid exchange capacities, specific surface areas and mean pore diameters of the resultant resin beads were measured.

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CIDNP Study of Photoinduced[2+2] Cycloadditions (the Paterno-Büchi Coupling) of Arylacetylenes and Quinone

Xin Yan WANG, Bao Zhen YAN, Ting WANG

中国化学快报. 2003, 14(03): 270-273.

摘要 ( )

可视化

CIDNP techniques were applied to study the mechanism of photocycloadditions of 2-chloro-5-methoxybenzoquinone 1 with arylacetylenes 2-5 in benzene-d₆ and acetonitrile-d₆ respectively.

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A New Compound from Chaenomeles sinensis (Thouin) Koehne

Hui Yuan GAO, Li Jun WU, Masanori KUROYANAGI

中国化学快报. 2003, 14(03): 274-275.

摘要 ( )

可视化

A new dihydrochromone derivative, named chaenomone, was isolated from the twigs of Chaenomeles sinensis (Thouin) Koehne. The structure was determined by spectroscopic methods.

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A New Bibenzyl Glycoside from Dendrobium moniliforme

Chun Sheng ZHAO, Wei Min ZHAO

中国化学快报. 2003, 14(03): 276-277.

摘要 ( )

可视化

A new bibenzyl glycoside has been isolated from the stems of Dendrobium moniliforme (L.) Sw. (Orchidaceae). Its structure has been identified on the basis of spectroscopic and chemical methods.

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A New Dendrobine-Type Alkaloid from Dendrobium nobile

Qun Fang LIU, Wei Min ZHAO

中国化学快报. 2003, 14(03): 278-279.

摘要 ( )

可视化

A new dendrobine-type alkaloid has been isolated from stems of Dendrobium nobile lindl.. Its structure has been identified on the basis of spectroscopic method.

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Chiral Separation of Erythromycin as a New Chiral Selector on CE

Jing Guo HOU, Tian Xi HE, Xiao Qian HAN, Xin Zhen DU, Xue Feng MAO, Hua Ling DENG, Jin Zhang GAO

中国化学快报. 2003, 14(03): 280-282.

摘要 ( )

可视化

Erythromycin as a new chiral selector was first used for chrial separation of four derivatives of biphenyldimethylester enantiomers on CE. The influence of pH, the chiral selector concentration and organic modifiers were preliminarily studied. Experiments show that the erythromycin as chiral selector is useful to CE.

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Chemiluminescence Determination of Benzoic Acid Using A Solid-Phase Verdigris Reactor

Zhen Jun WANG, Zheng Hua SONG

中国化学快报. 2003, 14(03): 283-286.

摘要 ( )

可视化

A new chemiluminescence flow system has been developed for sequential determina-tion of benzoic acid based on the reaction of the compound with copper carbonate entrapped in a solid-phase reactor. It was found that the unsaturated complex of Cu(Ⅱ) and benzoic acid (1:1) has strong catalytic effect on the luminol-H₂O₂ chemiluminescence reaction. The calibration graph is linear over the range of 0.025~60 μg/mL of benzoic acid, with a relative standard deviation of less than 3.0%, and the detection limit is 0.01μg·mL^-1. The proposed method was applied to the determination of benzoic acid content in different pharmaceutical formulations.

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Improvement on Simultaneous Determination of Cr(Ⅲ) and Cr(VI) by Capillary Electrophoresis and Chemiluminescence Detection

Wei DENG, Wei Ping YANG, Zhu Jun ZHANG, Xiao Rong LI

中国化学快报. 2003, 14(03): 287-289.

摘要 ( )

可视化

A sensitive method for the simultaneous determination of Cr(Ⅲ) and Cr(VI) using in-capillary reaction capillary electrophoresis separation and chemiluminescence detection was developed. The procedures were designed as follows:The sample, hydrochloric acid and sodium hydrogen sulfite solution segments were injected sequentially into the capillary. The reaction of Cr(VI) reduced to Cr(Ⅲ) by HSO₃^- occurred inside the capillary after applying the running voltage. According to the migration time difference of both Cr(Ⅲ) ions moving towards to the cathode (detection end), they could be separated and determined. The limits of detection for chromium(Ⅲ) and chromium(VI) (S/N=3) were 6.0×10^-13 mol/L (12 zmol) and 1.9×10^-11 mol/L (380 zmol), respectively.

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Indirect Determination of CTMAB with Sodium Chloride and Ammonium Thiocyanate by Floatation and Separation of Zinc

Quan Min LI, Hai Xin BAI, Wen Ying LÜ

中国化学快报. 2003, 14(03): 290-293.

摘要 ( )

可视化

A new method for indirect determination of cetyl-trimethyl ammonium bromide (CTMAB) with NaCl and NH₄SCN by floatation and separation of zinc has been studied. The study shows that Zn(Ⅱ) can associate with NH₄SCN and CTMAB to form insoluble ternary ion-association complex, and the precipitate can float on the surface of the liquid phase. A good linear relationship is observed between the floatation yield (E%) of Zn(Ⅱ) and the amount of CTMAB. On the ground, CTMAB can be indirectly determined by determining E% of Zn(Ⅱ). The results were satisfactory.

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Comparison of the Contributions of Tetrahydrofurfuryl Alcohol and PEG to α-Chymotrypsin Renaturation with High Performance Hydrophobic Interaction Chromatography

Ye Hua SHEN, Hai Bo WANG, Quan BAI, Xin Du GENG

中国化学快报. 2003, 14(03): 294-297.

摘要 ( )

可视化

The contributions of tetrahydrofurfuryl alcohol (THFA) and polyethylene glycol (PEG) to the renatured efficiency of α-chymotrypsin were investigated and compared with each other. The maximum increments of bioactivity recovery of α-Chy were found to be 25.1% for THFA, 10.4% for PEG, respectively. The experimental results indicated that the denaturant solution containing THFA contributed more to the renaturation of α-Chy in high performance hydrophobic interaction chromatography (HPHIC) than that containing PEG, when the concentration of THFA was 3.2%, the bioactivity recovery of α-Chy is the highest.

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NMR Study on Substituted Phenyl Furoisoxazolines

Xiang ZHANG, Hai Hong HUANG, Zi Yun LIN, Qing Hua CHEN

中国化学快报. 2003, 14(03): 298-299.

摘要 ( )

可视化

The configurations of substituted phenyl furoisoxazolines were determined by study on their ¹H-NMR and 1D NOESY. The characteristic chemical shifts of the γ-lactone ring protons in ¹H-NMR were also discussed.

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Study on Triplex DNA by Use of Molecular “Light Switch” Complex of Ru(phen)₂(dppx)²⁺

Lian Sheng LING, Zhi Ke HE, Fang CHEN, Hua Shan ZHANG, Yun E ZENG

中国化学快报. 2003, 14(03): 300-303.

摘要 ( )

可视化

A new method for the study of triplex DNA is established according the fluorescence enhancement of molecular "Light Switch" complex of Ru(phen)₂(dppx)²⁺ when it intercalate into triplex DNA. Because the fluorescence intensity of Ru(phen)₂(dppx)²⁺ bonded to triplex DNA is in the case higher than that bonded to duplex DNA in certain range of DNA concentration, the method is much more sensitive than other methods reported previously.

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Evaluation of The Interaction between Netropsin and Double Stranded DNA by Capillary Zone Electrophoresis

Xin Ya HE, Da Zhi LI, Ai Ye LIANG, Bing Cheng LIN

中国化学快报. 2003, 14(03): 304-307.

摘要 ( )

可视化

Capillary zone electrophoresis (CZE) was applied to study the interaction between netropsin and a 14mer double stranded DNA (dsDNA). The binding constant of this interaction calculated from Scatchard plot was (1.07±0.10)×10⁵ (mol/L)^-1. The binding stoichiometry was 1:1. The use of polyacrylamide coated capillary showed better effect in the analysis of DNA than noncoated capillary.

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A New Approach for Preparing Effective Inhibition Film on Copper Based on Self-assembled Process

Chun Tao WANG, Shen Hao CHEN

中国化学快报. 2003, 14(03): 308-311.

摘要 ( )

可视化

A new method for preparing effective inhibition film on copper has been developed. Phenylthiourea (PT) was first absorbed to copper surface to form a monolayer. 1-Dodecanethiol (DT) was then assembled on the surface for modification. Finally, AC voltage was loaded on copper covered the mixed film to improve it further. After these processes, an effective inhibition film was gained because of its high charge transfer resistance and low corrosion current density shown in electrochemical impedance spectra and polarization. The inhibition efficiency was more than 97%.

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Characterization of Nested Hollow Inorganic Fullerene-like Tungsten Disulfide Nanoparticles Prepared by Solid-Gas Reaction

Wei Xiang CHEN, Jiang Ping TU, Xiao Chun MA, Zhu De XU, Reshef TENNE, Rita ROSENSTVEIG

中国化学快报. 2003, 14(03): 312-315.

摘要 ( )

可视化

Non-carbon inorganic fullerene-like (IF) nanoscale materials have recently attracted intense interest due to their nested hollow and nanotube structures. In this letter, IF-WS₂ nanoparticles prepared by solid-gas reaction were characterized by X-ray diffraction, scanning electron microscopy and transmission electron microscopy. The results show that the IF-WS₂ nanoparticles have a nested hollow closed spherical structure with diameter of 100-150 nm.

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Investigation on Interaction between Cold Plasma with Catalysts

Bao Wei WANG, Gen Hui XU

中国化学快报. 2003, 14(03): 316-318.

摘要 ( )

可视化

The characteristic parameters were measured with floating double probe method when cold plasma was interacting with catalysts, such as MoO₃/Al₂O₃, NiY, Pd/Al₂O₃, which were used in the conversion of natural gas to C₂ hydrocarbons through electrical field enhanced plasma catalysis. These parameters were compared in different input voltage, different atmosphere, before and after reaction in plasma field. The interaction between catalysts and cold plasma was also investigated. This confirm that cold plasma can enhanced catalysis effect.

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Study of The Pd-B/γ-Al₂O₃ Amorphous Alloy Catalyst

Tong DING, Yong Ning QIN, Zhi MA

中国化学快报. 2003, 14(03): 319-322.

摘要 ( )

可视化

The Pd-B/γ-Al₂O₃ amorphous alloy catalyst and Pd/γ-Al₂O₃ crystalline metal catalyst were prepared by KBH₄ reduction and routine impregnation, respectively. Pd-B/γ-A1₂O₃ and Pd/γ-A1₂O₃ catalysts were characterized by XRD and SEM. It was found that the catalytic activity of the Pd-B/γ-A1₂O₃ amorphous alloy catalyst was higher than that of the Pd/γ-A1₂O₃crystalline metal catalyst in the anthraquinone hydrogenation.

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Synthesis of Monodisperse α-Fe₂O₃ Particles in Short Periods

Yu Ting ZHAO, De Hong CHEN, Dai Rong CHEN, Xiu Ling JIAO

中国化学快报. 2003, 14(03): 323-326.

摘要 ( )

可视化

Monodisperse a-Fe₂O₃ particles with different particle size (ca. 620±10 nm or 60±4 nm) have been successfully prepared by hydrothermal method in short periods. In this process, the crystal-growing inhibitor (DBS) favored the formation of monodisperse nanoparticles.

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Spontaneous Vesicle Formation in Mixed Aqueous Solution of Poly-tailed Cationic and Anionic Surfactants

Wen Jun CHEN, Gan Zuo LI, Li Min ZHAI, Bo Qin LI, Jun XU, Rui XIA

中国化学快报. 2003, 14(03): 327-330.

摘要 ( )

可视化

Spontaneous vesicles from the mixed aqueous solution of poly-tailed cationic surfactant PTA and anionic surfactant AOT are firstly obtained. Vesicle formation and characterizations are demonstrated by negative-staining TEM and dynamic light scattering. A monodisperse vesicle system is obtained with a polydispersity of 0.082. Ultrasonication can promote the vesicle formation. Mechanism of vesicle formation is discussed from the viewpoint of molecular interaction.

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2003年, 第14卷, 第03期　刊出日期：2003-03-20

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本期目录

2003年, 第14卷, 第03期 刊出日期：2003-03-20

2003年, 第14卷, 第03期　刊出日期：2003-03-20