中国化学快报

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A Stereoselective Approach to S-Vinyl Thioesters from Alkynes, Elemental Sulfur and Acyl Chlorides

Jun Hua WANG, Qing XU, Xian HUANG

中国化学快报. 2000, 11(01): 1-2.

摘要 ( )

可视化

A facile, stereoselective synthesis of S-vinyl thioesters from easily available starting compounds and reagents is showed.

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Intramolecular Aldol Condensation of α-Oxo Ketene Dibenzylthioacetals:A Facile Route to Substituted Thiophenes

Mang WANG, Qun LIU, Mei Xing ZHAO, Li Min WANG

中国化学快报. 2000, 11(01): 3-4.

摘要 ( )

可视化

A new method for the synthesis of substituted thiophenes was through intramolecular aldol condensation of α-oxo ketene dibenzylthioacetals. All products were confirmed with IR, ¹H NMR and elemental analysis.

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Addition of Organosamarium Reagents to α, β-Unsaturated Esters

Yun Fa ZHENG, Wei Liang BAO, Yong Min ZHANG

中国化学快报. 2000, 11(01): 5-8.

摘要 ( )

可视化

Allylsamarium bromide reacts with α, β-unsaturated esters and α-alkyloxy carbonyl α, β-unsaturated esters to give 1, 2-addition and 1, 4-addition products respectively.

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Synthesis of a New Chiral Cyclic β-Amino Alcohol

Zong Xuan SHEN, Jing LIANG, Ya Wen ZHANG

中国化学快报. 2000, 11(01): 9-10.

摘要 ( )

可视化

A new chiral cyclic β-amino alcohol (R)-1-(1'-amino-2'-naphthylethyl)-cyclopentanol 2, which had not been reported previously, was prepared from (R)-3-(2-naphthyl)-alanine 3.

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The Synthesis of 4-Arylcarbonyl-3-methoxycarbonyl-2-phenylfurans by Friedel-Crafts Acylation Reactions

Shrong Shi LIN, Jun Hua YU, Jian Mei WANG, Bo YANG, Xiu Lin YE

中国化学快报. 2000, 11(01): 11-14.

摘要 ( )

可视化

Keto esters 8, 4-arylcarbonyl-3-methoxycarbonyl-2-phenylfurans, potential precursors of the synthesis of furofuran lignans, were obtained from dimethyl 2-phenylfuran-3, 4-dicarboxylate 2. Diester 2 was selectively hydrolyzed to monoacid 6 followed by converting to its acid chloride 7. Friedel-Crafts acylation reactions of 7 with aromatic compounds afforded keto esters 8. The geometric structures of 8 and its precursors were elucidated and verified by NMR spectra.

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Total Synthesis of Machilin A

Wen Xin GU, An Xin WU, Qiang GAO, Xin Fu PAN

中国化学快报. 2000, 11(01): 15-16.

摘要 ( )

可视化

Machilin A, isolated from the bark and root of Machilus thunbergii Sieb. et Zucc. , was synthesized in eight steps from piperonal, with the coupling reaction as a key step.

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Studies on the Synthesis and Property of A New Podand-armed Calix[4]arene Derivative

Yan Jun XING, Zhi Xian ZHOU, Li MA, Zhen Wei LU

中国化学快报. 2000, 11(01): 17-18.

摘要 ( )

可视化

A new ligand 25, 26, 27, 28-tetrakis[2-(o-methoxyphenoxy)ethoxy]calix[4]arene 3 was synthesized by direct base-strength-driven O-alkylation of calix[4]arene 1. 3 has been used as ionophore for cesium selective PVC membrane electrode. The extraction for cesium and sodium with 3 have been also studied.

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Synthesis and Herbicidal Activities of N'-(substituted pyrimidin-2-yl)-N-Substituted Phenoxyacetyl Thiourea Derivatives

Si Jia XUE, Jin Shan ZOU, Hai Jian YANG

中国化学快报. 2000, 11(01): 19-20.

摘要 ( )

可视化

Fifteen N'-(substituted pyrimidin-2-yl)-N-substituted phenoxyacetyl thioureas were synthesized and tested for biological activities. All of them are new compounds and their structures were confirmed by IR. ¹HNMR. MS and elemental analysis. Some of the target compounds showed excellent inhibitory activities against root and stalk of dicotyledon plant (such as radish), and selective on monoctyledon plant (such as rice).

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Synthesis and optical limiting in copolymers of C₆₀ and 1-phenyl-1-butyne

Hong Yao XU, Shan Yi GUANG, Ben Zhong TANG

中国化学快报. 2000, 11(01): 21-22.

摘要 ( )

可视化

While WCl₆-Ph₄Sn is a poor catalyst for the polymerization of 1-phenyl-butyne (PB) at room temperature, it effectively polymerizes PB in the presence of C₆₀, giving high molecular weight polymers in high yields. The polymer is soluble in THF and chloroform and spectroscopic analysis reveals that C₆₀ has copolymerized with PB. Thus, C₆₀ plays dual roles of comonomer and cocatalyst in the acetylene polymerization. The copolymers strongly attenuate 532-nm laser pulses, whose limiting performance is superior to that of parent C₆₀.

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Metal 2-Hydroxy-1-Naphthaldehyde Thiosemicarbazone (Me-HNT) Complexes-A New Kind of Biomimic Enzyme Catalyst

Ming DU, Fang Zhen LIANG, Bo TANG, Yun Jing LUO, Han Xi SHEN, Bin TENG, Yan LIU

中国化学快报. 2000, 11(01): 23-26.

摘要 ( )

可视化

Metal (Me=Fe(Ⅲ), Mo(Ⅵ), Mn(Ⅱ), Co(Ⅱ), Ni(Ⅱ), Zn(Ⅱ) and Cu(Ⅱ)) 2-hydroxy-1-naphthaldehyde thiosemicarbazone complexes (MeHNT) were synthesized and used as mimic-enzyme catalysts to mimic the active group of horseradish peroxidase (HRP). The results showed that Fe-HNT, Mo-HNT are effective catalysts, which have similar catalytic activity as HRP. The sequence of catalytic activities of tested biomimic peroxidas is Mo-HNT> Fe-HNT> Zn-HNT> Ni-HNT> Mn-HNT. Among them, Fe-HNT is used as a mimic-enzyme catalyst in determination of ascorbic acid and glucose by coupling the catalytic reaction of glucose oxidase.

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Synthesis of Polymer-Bonded Quaternary Ammonium Type Metal Porphyrins

Zao Ying LI, Cong LI, Xu Ye WU

中国化学快报. 2000, 11(01): 27-28.

摘要 ( )

可视化

The reaction of pyrrole with 4-hydroxybenzaldehyde and 4-pyridinecarboxaldehyde afforded new porphyrin ligand 1. Treatment of 1 with copper(Ⅱ) acetate, cobalt (Ⅱ) acetate gave complexes 2-3 respectively. 2 and 3 reacted with Merrifield's peptide resin produced 4 and 5. Complexes 4 and 5 reacted with methyl iodide respectively gave 6-7. The new compounds 1-7 have been identified by ¹H NMR, IR, MS and UV-visible spectra, elemental analysis and AES.

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Facile Synthesis of Chiral Conjugated Polymer Based on BINOL Skeleton

Chun E DONG, Yong Gang ZHI, Zuo Long YU, Liang Fu ZHANG, Albert. S. C. CHAN

中国化学快报. 2000, 11(01): 29-30.

摘要 ( )

可视化

A new type of chiral conjugated polymers 6a-d has been synthesized by the reaction of (R)-2, 2'-dihydroxy-1, 1'-binaphthyl-6, 6'-dicarbaldehyde 5 with corresponding diamine in the presence of acetic acid.

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A Proposed Mechanism of Photocatalytic Oxidation of Trichloroethylene in Gas Phase

Gong Hu LI, Hu Lan MA, Wei Zhu AN

中国化学快报. 2000, 11(01): 31-34.

摘要 ( )

可视化

GC/MS has been used to identify gas phase products and intermediates formed during the gas phase photocatalytic oxidation of trichloroethylene (TCE) on TiO₂ with low BET surface area. A new byproduct, oxalyl choloride (ClCOCOCl) was detected together with other byproducts such as COCl₂, CHCl₃, DCAC and C₂HCl₅. Firstly the method of perturbation on the reaction system was conducted. Very little amount of water was carried into the feed gas and subsequent changes were observed. The discussion based on the product distribution changes led to a postulated mechanism consisting of two stages.

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Mechanism of cleaving DNA through hydrolysis of a novel complex of Mg containing dien ligand

Pin YANG, Ai Xin SONG, Xiao Yi FAN

中国化学快报. 2000, 11(01): 35-36.

摘要 ( )

可视化

A series of metal complexes were designed and synthesized and a novel binuclear magnesium complex has been selected, namely[Mg₂(dien)Cl(OH₂)₂]Cl₂·H₂O (dien=diethylene-triamine), which can cleave the plasmid pBR322 DNA effectively in close to physiological condition without adding any external materials. Through biological and chemical methods, especially the comparative experiments, we find the interaction between the complex and DNA belongs to hydrolytic mechanism.

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Cypripediquinone A, a new phenanthraquinone from Cypripedium macranthum (Orchidaceae)

Jian Hua JU, Jun Shan YANG, Jin LI, Pei Gen XIAO

中国化学快报. 2000, 11(01): 37-38.

摘要 ( )

可视化

A new phenanthraquinone, cypripediquinone A, was isolated from the rhizome of Cypripedium macranthum (Orchidaceae) and its structure was established as 2, 4, 7-trimethoxy-9, 10-phenanthraquinone mainly by spectroscopic analysis.

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A Cytotoxic Saponin with Two Monoterpenoids from Albizia julibrissin

Kun ZOU, Jing Rong CUI, Yu Ying ZHAO, Ru Yi ZHANG, Jun Hua ZHENG

中国化学快报. 2000, 11(01): 39-42.

摘要 ( )

可视化

A new cytotoxic saponin (1), Julibrosides J₂₇, was isolated from the stem barks of Alibizia. julibrissin by chromatography, and the structure was elucidated as 3-O-β-D-xylopyranosyl-(1→2)-β-D-fucopyranosyl-(1→6)-β-D-glucopyranosyl-21-O-[(6S)-2-trans-2-hydroxymethyl-6-methyl-6-O-[4-O-((6S)-2-trans-2-hydroxylmethy 6-methyl-6-hydroxy)-2, 7-octadienoyl-β-D-quinovopy-ranosyl]-2, 7-octadienoyl}-acacic acid-28-O-β-D-glucopranosyl-(1→3)-[(α-L-arabinofuranosyl-(1→4)]-α-L-rhamnopyranosyl-(1→2)-β-D-glucopyrnosyl ester based on spectral and chemical evidences.

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Two New Diterpenoids from Isodon rubescens

Bao Lin LI, Shao Nong CHEN, Zhi Xian SHI, Xuan TIAN, Yao Zu CHEN

中国化学快报. 2000, 11(01): 43-44.

摘要 ( )

可视化

Two new diterpenoids taibairubescensin A (1) and B (2) have been isolated from Isodon rubescens. The structures of compound 1 and 2 were elucidated as 2β, 3β-diacetoxy-11β, 13α-dihydroxy-ent-kaur-16-en-15-one (1) and 3β, 11β-diacetoxy-2β, 6α-dihydroxy-ent-kaur-16-en-15-one (2) on the basis of spectroscopic analysis.

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Triterpenoids from Fuscoporia obliqua

Jian HE, Xiao Zhang FENG, Bin ZHAO, Yang LU

中国化学快报. 2000, 11(01): 45-48.

摘要 ( )

可视化

Two new lanosta triterpenoids, 3β, 22α-dihydroxy-lanosta-8, 24E-diene-25-peroxide, 3, 22α, 25-trihydroxy lanosta-8, 24E-diene were isolated from the petroleum ether extracts of Fuscoporia obliqua and their structures had been determined by spectral data, chemical method and X-ray crystallographic analysis.

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A New Triterpenoid Saponin from the Seeds of Vaccaria segetalis

Sheng Min SANG, Min Liang ZOU, Ai Na LAO, Zhong Liang CHEN, Jun UZAWA, Yasuo FUJIMOTO

中国化学快报. 2000, 11(01): 49-52.

摘要 ( )

可视化

A new triterpenoid saponin, named segetoside k, has been isolated from the seeds of Vaccaria segetalis. On the basis of chemical reaction and spectral analysis, the structure of segetoside K was established as:olean-12-ene-23α, 28b-dioic acid 3b, 16a-dihydroxy-28-O-[β-D-glucopyranosyl-(1→3)]-β-D-glucopyra-nosyl-(1→2)-β-D-glucopyranosyl-(1→6)-β-D-gluco-pyranoside(1).

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Two New Gallotannins from Pistacia weinmannifolia

Ai Jun HOU, Li Yan PENG, Yan Ze LIU, Zhong Wen LIN, Han Dong SUN

中国化学快报. 2000, 11(01): 53-56.

摘要 ( )

可视化

Two new gallotannins, pistafolins A (1) and B (2), were isolated from the leaf extract of Pistacia weinmannifolia. Their structures were determined by spectral methods.

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Two New C₂₉ Sterols from Clerodendrum colebrookianum

Hui YANG, Shuang Xi MEI, Bei JIANG, Zhong Wen LIN, Han Dong SUN

中国化学快报. 2000, 11(01): 57-60.

摘要 ( )

可视化

From the aerial parts of Clerodendrum colebrookianum Walp. , two new C₂₉ sterols, colebrin A and colebrin B, were isolated, along with a known compound, clerosterol. The structures of the new compounds were elucidated on the basis of spectral evidence.

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Study on Chemiluminescence Reactions of Lucigenin and Reductants by Flow Injection Analysis

Zhi Jia ZHU, Jiu Ru LU

中国化学快报. 2000, 11(01): 61-64.

摘要 ( )

可视化

The chemiluminescence reactions between lucigenin and reductants such as Mo(Ⅲ), V(Ⅱ), U(Ⅲ), W(Ⅲ), Cr(Ⅱ), Ti(Ⅲ) and Fe(Ⅱ), which were produced on-line by passing Mo(Ⅵ), V(Ⅴ), U(Ⅵ), W(Ⅵ), Cr(Ⅵ, Ⅲ), Ti(Ⅳ) and Fe(Ⅲ) through a micro Jones column, are studied in detail. Results show that the reactions can be used directly for the determination of these substances. The mechanism of the reactions is also investigated.

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Simultaneous Chiral Separation Using a Combinatorial Molecular Imprinting Phase

Jin Fang WANG, Liang Mo ZHOU, Xue Liang LIU, Qing Hai WANG, Dao Qian ZHU

中国化学快报. 2000, 11(01): 65-68.

摘要 ( )

可视化

Molecular imprinting chiral stationary phase against Cbz-L-Serine (Cbz-L-Ser) and Cbz-L-Alaine (Cbz-L-Ala) were prepared utilizing acrylamide+2-vinylpyridine as combined basic functional monomers. Cross-selectivity was used to obtain simultaneous chiral separations of Cbz-DL-Ser and Cbz-DL-Ala by connecting two columns packed with Cbz-L-Ser and Cbz-L-Ala imprinted chiral stationary phase, respectively.

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Synthesis and Characterization of Water-Soluble Carboxymethyl-Cyclodextrin Polymer as Capillary Electrophoresis Chiral Selector

Xue Yan SHI, Rui Fang FAN, Yue Qin ZHANG, Jun Ling GU, Ruo Nong FU

中国化学快报. 2000, 11(01): 69-70.

摘要 ( )

可视化

The water-soluble carboxymethyl-cyclodextrin polymer (CM-CD polymer) was synthesized and used as capillary electrophoresis chiral selector. Verrapamil and thiopentorusodium were well separated using CM-CD polymer as chiral selector.

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Preparation of Platinum Implanted Glassy Carbon Electrode and Electro-oxidation of Formic Acid and Formaldehyde

Cun Zhong ZHANG, Jing YANG, Xiao Lin LU, Zhong Da WU

中国化学快报. 2000, 11(01): 71-74.

摘要 ( )

可视化

The glassy carbon substrates were bombarded with 5×10¹⁷ ions/cm² of platinum. The surface composition of implanted electrode and concentration-depth profiles of various elements were measured by AES. The chemical state of Pt in glassy carbon electrode implanted with platinum (Pt/GC) was detected by X-ray Photoelectron Spectroscopy (XPS). The electro-oxidation of HCOOH and HCHO have been investigated on Pt/GC and smooth Pt electrodes. The results show that the platinum implanted into glassy carbon is much more active than the smooth platinum metal for electro-oxidation of HCOOH and HCHO.

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The Characterization of Comblike Polymer Electrolyte by Means of NMR

Zi Jiang JIANG, Li QI

中国化学快报. 2000, 11(01): 75-78.

摘要 ( )

可视化

The comblike polymers based on poly (styrene-co-maleic anhydride) backbone with poly (ethylene glycol) methyl ether as side chains were synthesized and characterized by ¹H NMR, with the result compared with that of IR. It is found that it is both feasible and simple to synthesize this kind of compounds with the help of ¹H NMR.

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Direct Electrochemistry of Myoglobin in DDAB-Clay Composite Films

Nai Fei HU, Zhen LI, Hong Yan MA

中国化学快报. 2000, 11(01): 79-80.

摘要 ( )

可视化

Ordered films were made by casting a mixture of aqueous dispersions of didodecyldimethylammonium bromide (DDAB)-clay composite and myoglobin (Mb) solution on pyrolytic graphite (PG) electrodes. The Mb-DDAB-clay film electrodes showed stable and reversible cyclic voltammetric responses in buffers and can catalyze the reduction of trichloroacetic acid (TCA).

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The Electrochemical Characteristics of Multilayer Assembly of Hemoglobin and Polystyrene Sulfonate at Self-assembled Monolayer Surface

Hong SUN

中国化学快报. 2000, 11(01): 81-84.

摘要 ( )

可视化

A multilayer film of hemoglobin (Hb) molecules and polyelectrolyte sulfonate were fabricated on a thiol self-assembled monolayers (SAMs) by electrostatic force. The Hb maintains electroactive property in the multilayer film, methylene blue (MB) incorporated into the multilayer can enhance the electron transfer rate between the Hb and the electrode surface.

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Gas Phase Polymerization of Ethylene with Supported Titanium-Nickel Catalysts

Jin Min HU, Hai Hua WANG, Jiang Li WU, Qi Xing ZHANG

中国化学快报. 2000, 11(01): 85-86.

摘要 ( )

可视化

A new ditransition-metal catalyst system TiCl₄-NiCl₂/MgCl₂-SiO₂/AlR₃ was prepared. Gas phase polymerization of ethylene with the catalysts has been studied. The kinetic curves of gas phase polymerization showed a decline. The catalystic efficiency and polymerization reaction rates have a optimum value when Ni content of the catalysts was 12.5% (mol). The products obtained are branched polyethylene.

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A Novel CFC-12 Hydrolysis Catalyst:WO₃/SnO₂

Zhen MA, Wei Ming HUA, Yi TANG, Zi GAO

中国化学快报. 2000, 11(01): 87-88.

摘要 ( )

可视化

The catalytic hydrolysis of dichlorodifluoromethane (CFC-12) was investigated over WO₃/SnO₂ solid acid which was prepared by impregnating Sn(OH)₄ with aqueous ammonium metatungstate followed by evaporating, drying and calcining in air. The CFC-12 conversion over WO₃/SnO₂ at 330℃ remained above 99.5% during 150 h on stream, however, parent metal oxides showed rare catalytic decomposition activity.

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A Novel Way to Prepare γ-Al₂O₃ Supported SO₄^2-/ZrO₂ Solid Superacid Catalysts for n-Butane Isomerization

Ting LEI, Yi TANG, Wei Ming HUA, Jin Suo XU, Zi GAO

中国化学快报. 2000, 11(01): 89-92.

摘要 ( )

可视化

Highly active solid superacid catalysts for n-butane isomerization, SZ/Al₂O₃-P, were prepared by supporting SO₄^2-/ZrO₂ (SZ) on γ-Al₂O₃ carrier using a precipitation method. The activities of some catalysts were enhanced significantly. The activity of the most active sample, 60%SZ/Al₂O₃-P, was even about 2 times more active than that of the SZ catalyst.

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Synthesis and Crystal Structure of[NiL₂(H₂O)₂](ClO₄)₂ L=MBPT=4-p-methylphenyl-3, 5-bis-(pyridin-2-yl)-1, 2, 4-triazole

Si Chang SHAO, Dun Ru ZHU, Tian Wei WANG, Yong ZHANG, S. Shanmuga Sundara RAJ, Hoong Kun FUN

中国化学快报. 2000, 11(01): 93-94.

摘要 ( )

可视化

The Nickel (Ⅱ) complex, [Ni(MBPT)₂(H₂O)₂](ClO₄)₂ (MBPT=4-p-methylphenyl-3, 5-bis-(pyridin-2-yl)-1, 2, 4-triazole), was synthesized and its crystal structure determined by X-ray diffraction methods. The complex adopts a distorted octahedral environment made up of two bidentate chelating MBPT ligands in the equatorial plane and two water molecules filling the axial positions.

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2000年, 第11卷, 第01期　刊出日期：2000-01-20

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2000年, 第11卷, 第01期 刊出日期：2000-01-20

2000年, 第11卷, 第01期　刊出日期：2000-01-20