中国化学快报

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First Application of Optically Active trans-1,2-Bis(2-aminophenyl)cyclopentane for Asymmetric Reaction:Enantioselective N-Acetylation of Secondary Alkyl Amines

Jin Song YANG, Kazuhiro KONDO, Yasuoki MURAKAMI

中国化学快报. 2001, 12(01): 1-4.

摘要 ( )

可视化

First application of optically active trans-1,2-Bis(2-aminophenyl)cyclopentane 2 for asymmetric reaction, enantioselective N-acetylation of secondary alkyl amines, is described. This acetylation with tetraacetylated 3 which was prepared from 2, gave the N-acetylamines with up to 21% ee.

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A New Approach to 2,3-Dihydro-1H-1,5-Benzodiazepines from the Reaction of o-Nitrophenylazide with α,β-Unsaturated Ketones Promoted by Samarium Diiodide

Xiao Yuan CHEN, Wei Hui ZHONG, Yong Min ZHANG

中国化学快报. 2001, 12(01): 5-6.

摘要 ( )

可视化

o-Nitrophenylazide was reduced by SmI₂ in anhydrous THF at room temperature to produce active intermediate 2 (samarium amide), "living" double-anion in situ which reacted smoothly with α,β-unsaturated ketones to afford 2,3-dihydro-1H-1,5-benzodiazepines in good yields under mild and neutral conditions.

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Study on the Ring Eulargment Reaction:Synthesis of 7,8,13, 13a-tetrahydroisoindolo[1,2-b][3]benzazepine and 5,6,8,9,14,14a-hexahydroisoquino[1,2-b][3]benzazepine

Yu Xin LIU, Xiao Tian LIANG

中国化学快报. 2001, 12(01): 7-10.

摘要 ( )

可视化

A new approach to the synthesis of 7,8,13,13a-tetrahydroisoindolo[1,2-b] [3]benzazepine 5 and 5,6,8,9,14,14a-hexahydroisoquino[1,2-b][3]benzazepine 9 and related compounds is described as using ring expansion of N-heterocycles.

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The Synthesis of 7-[1-Aza-2-(dimethylamino)vinyl]-4-methylhydroquinolin-2-ones and their Isomerism in Different Solvents

Qian ZHANG, Ying CHEN, Yun Hong ZHENG, Wan Yun SHENG, Peng XIA, Yi XIA, Zheng Yu YANG, Kuo Hsiung LEE

中国化学快报. 2001, 12(01): 11-14.

摘要 ( )

可视化

The reaction of 7-amino-4-methyl-2(1H)-quinolone 1 and its 6-methyl derivative 2 with Vilsmeier reagent (DMF and POCl₃) afforded 7-[1-aza-2-(dimethylamino)vinyl]-4-methyl-hydro-quinolin-2-one 3 and 7-[1-aza-2-(dimethylamino)vinyl]-4,6-dimethylhydroquinolin-2-one 4, respec-tively. ¹H-NMR analysis in different solvents indicated that isomerism occurred due to hindered rotation around the (CH₃)₂N-C:N σ-bond. The rotational energy barrier of 3 was calculated.

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Synthesis of Some Novel 2,3-diaryl-Butadiene Analogues

Jun Biao CHANG, Juan HE, Rong Feng CHEN, Jing Xi XIE

中国化学快报. 2001, 12(01): 15-18.

摘要 ( )

可视化

In present paper, the 2,3-diaryl-butadiene analogues were synthesized as anti-cancer agents. The structures were confirmed by ¹HNMR and elemental analysis.

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The Synthesis of 19-Nor-1α, 25-dihydroxy-22-oxo-vitamin D₃

Yong WU, Mei GUAN, Pei Jie LI, Cheng XU, Xiao Chun WU

中国化学快报. 2001, 12(01): 19-20.

摘要 ( )

可视化

19-Nor-1α, 25-dihydroxy-22-oxo-vitamin D₃ 4 was synthesized by the coupling of known compound 5 and the A-ring phosphine oxide 6 followed by deprotection of the hydroxy functions.

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An Efficient Synthetic Method of 11,12-Dihydroxyl Eudesmanolide Sesquiterpenoid from α-Santonin

Wu Jiong XIA, De Run LI, Yong Qiang TU, Ao Cheng CAO

中国化学快报. 2001, 12(01): 21-24.

摘要 ( )

可视化

A short and efficient procedure for introduction of tertiary hydroxyl to C-11 of eudesmanolide based on the rearrangement-oxidation of the exocylic double bond has been developed, which is synthetically valuable for a series of natural eudesmanolide sesquiterpenoids containing the 11,12-diol.

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An Improved Synthesis of Tn Antigen

Guo Lin ZHANG, Yong Zhou HU

中国化学快报. 2001, 12(01): 25-26.

摘要 ( )

可视化

We have developed an alternative route to synthesize Tn antigen. The synthetic product was characterized by IR, ¹H-NMR and elemental analysis.

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Synthesis of a Series of Novel Organic Compounds with Two-photon Absorption and Two-photon pumped Lasing

Xiao Mei WANG, Qi FANG, Chun WANG, Guang Yong ZHOU, Yan REN, Min Hua JIANG

中国化学快报. 2001, 12(01): 27-30.

摘要 ( )

可视化

A series of novel organic compounds named as CSPI, DPASPI, PSPI DEASPI and HEASPI respectively, with large two-photon absorption has been synthesized and their structures have been determined by ¹HNMR and elemental analysis. The highest two-photon pumped (TPP) output /input efficiency is as high as 13.4% for PSPI in DMF with d0=0.03 mol/L and the effective two-photon absorption cross section is 8.8×10^-48 cm⁴·s/photon for DPASPI in DMF with d₀=0.05mol/L.

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Synthesis of New Aza-crown Ethers Containing Pyridine Ring and their Liquid Membrane Transport of Alkali Cations

Bin ZHAO, Feng Qin WANG, Min XIA, Lai Jin TIAN

中国化学快报. 2001, 12(01): 31-34.

摘要 ( )

可视化

Five new aza-crown ethers have been prepared by the condensation of 2,6-bis[(2-formylphenyl)oxymethyl] pyridine with different diamino compounds in hot methanol, the bis-Schiff bases without isolation were reduced with NaBH₄ to afford the corresponding aza-crown ethers. The liquid membrane transport of alkali cations using the five new macrocycles as the ion-carriers was also studied.

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Synthesis of Some New Derivatives of 1,3-Dichloro-1,1,3,3-tetraphenyldisilazane

Cai Hong XU, Zhi Jie ZHANG, Yong Min LI, Zhi Min ZHENG, Ze Min XIE

中国化学快报. 2001, 12(01): 35-38.

摘要 ( )

可视化

The reactive properties of 1,3-dichloro-1,1,3,3-tetraphenyldisilazane (DCTPS) with water, methanol, phenylamine and lithium salt of hexamethylcyclotrisilazane (D₃^Nli) were investigated, and four new derivatives were obtained.

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Novel Stereoselective Synthesis of 1,3-Dienyl Tellurides by Palladium Catalyzed Cross-coupling Reaction of (E)-β-Bromovinyl Tellurides

Ya Ping WANG, Lu Ling WU, Xiang HUANG

中国化学快报. 2001, 12(01): 39-40.

摘要 ( )

可视化

β-Bromovinyl tellurides are new difuctional reagents which undergo palladium-catalyzed cross-coupling reaction with alkenes to give conjugated dienyl tellurides.

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Rare Earth Complex Initiated Ring-Opening Polymerization of 2,2-Dimethyltrimethylene Carbonate

Jun LING, Yi Feng ZHANG, Zhi Quan SHEN

中国化学快报. 2001, 12(01): 41-42.

摘要 ( )

可视化

The ring opening polymerization of 2,2-dimethyltrimethylene carbonate (DTC) initiated by single component of tris(2,6-di-tert-butyl-4-methylphenoxo) lanthanide (Ln(OAr)₃) is reported. The initiators are highly active to the polymerization and give high molecular weight polymers. 1HNMR spectra and DSC measurement suggest the polymerization is free of decarboxylation. Mechanism study shows that the monomer insertion is via the break of acyl-oxygen bond of DTC.

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Partial Oxidation of Butane to Syngas over Nickel SupportedCatalysts Modified by Alkali Metal Oxide and Rare-Earth Metal Oxide

Sheng Lin LIU, Long Ya XU, Su Juan XIE, Qing Xia WANG

中国化学快报. 2001, 12(01): 43-46.

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可视化

The partial oxidation of butane (POB) to syngas over nickel supported catalysts was first investigated with a flow-reactor, TG and UVRRS. The NiO/γ-Al₂O₃ is the most suitable for the POB among NiO/γ-Al₂O₃, NiO/MgO and NiO/SiO2. And the reaction performance of the NiO/γ-Al₂O₃ shows little difference from those of the nickel supported catalysts modified by alkali metal oxide and rare-earth metal oxide. However, modification with Li₂O and La₂O₃ can suppress carbon-deposition of the NiO/γ-Al₂O₃, which contains graphite-like species during the POB reaction.

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A New Phenolic Compound from Thamnolia vermiculari

Bei JIANG, Shuang Xi MEI, Quan Bin HAN, Wei XIANG, Han Dong SUN

中国化学快报. 2001, 12(01): 47-48.

摘要 ( )

可视化

A new phenolic compound, thamnolin (1), was isolated from the extract of Thamnolia vermicularis. Its structure was determined as 6-tricosyl-2,4-dimethoxy-phenol by spectral methods.

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Desmosdumotin B:A New Special Flavone from Desmos dumosus

Jiu Hong WU, Shi Long MAO, Shi Xuan LIAO, Yang Hua YI, Chuan Qing LAN, Zhong Wu SU

中国化学快报. 2001, 12(01): 49-50.

摘要 ( )

可视化

A new special flavone, named desmosdumotin B, was isolated from the roots of D. dumosus and its chemical structure identified as 5-hydroxy-7-one-6,8,8-trimethylflavone by spectral analysis and X-ray.

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New diterpenoid glucosides from Siegesbeckia pubescens

Jiang XIONG, Qi Duan JIN, Yun Long XU

中国化学快报. 2001, 12(01): 51-54.

摘要 ( )

可视化

Five new diterpenoids isolated from Siegesbeckia pubescens, pubesides A~E, were established as ent-2α,15,16-trihydroxypimar-8(14)-en-2-O-β-D-glucopyranoside (1), ent-15,16,19-trihydroxypimar-8(14)-en-19-O-β-D-glucopyranoside (2), b-D-glucopyranosyl-ent-15,16-dihydroxypimar-8(14)-en-19-oiclate (3), ent-2-oxo-15,16,19-trihydroxypimar-8(14)-en-19-O-β-D-gluco-pyranoside (4), ent-2-oxo-15,16,19-trihydroxypimar-8(14)-en-19-O-β-D-glucopyranoside-15,16-acetonide (5) by 1D and 2D NMR techniques.

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A New Nortriterpenoid Glycoside from Sinofranchetia chinensis

Xiao Hui YANG, Rui Jun MA, Run Hua LU, Xiao Ning WEI, Yun Pu WANG, Han Qing WANG, Jie KONG

中国化学快报. 2001, 12(01): 55-58.

摘要 ( )

可视化

A new 30-nortriterpenoid glycopside, 3-O-α-L-arabinopyranosyl-30-norhederagenin 28-O-α-L-rhamnopyranosyl(1→4)-β-D-glucopyranosyl (1→6)-β-D-glucopyranoside 1, named sinofoside A was isolated from Sinofranchetia chinensis. Its structrue was elucidadated by spectra FAB-MS, 2D-NMR including ¹H-¹H COSY, ¹H-¹³C COSY, TOSCY, HMBC and NOESY techniques.

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A Novel Hexanordammarane Glycoside from the Roots of Panax notoginseng

Hai Zhou LI, Rong Wei TENG, Chong Ren YANG

中国化学快报. 2001, 12(01): 59-62.

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可视化

Notoginsenoside R₁₀, a novel hexanordammarane glycoside was isolated from the roots of Panax nototginseng, as a minor constituent. Its structure was determined as 6-O-(β-D-glucopyranosyl)-3β,6α,12β-trihydroxy-22,23,24,25,26,27-hexanordammaran-20-one(1), by means of spectroscopic methods.

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Four New Taxoids from the Barks of Taxus yunnanensis

Sheng Hong LI, Hong Jie ZHANG, Ping YAO, Han Dong SUN

中国化学快报. 2001, 12(01): 63-66.

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From the barks of Taxus yunnanensis, a new paclitaxel-related compound, 7-xylosyl-taxol D (1), and three new 11(15→1)-abeotaxoids, taxuyunnanines P-R (2-4) have been isolated. Their structures were determined on the basis of spectral methods. Taxuyunnanines P-R are a rare type of naturally occurring abeotaxoids with an opened D-ring system.

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Two New Diterpene Alkaloids from the Roots of Spiraea japonica var. acut

Hong Ping HE, Yue Mao SHEN, Xiao Sheng YANG, Bin Gui WANG, Ling LI, Xiao Jiang HAO

中国化学快报. 2001, 12(01): 67-68.

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可视化

Chemical investigation on the ethanol extract from the roots of Spiraea japonica var. acuta resulted in the isolation of two new diterpene alkaloids named spiratines A and B (1-2), respectively.

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Attempt to Resolute Chiral Clusters by Optically Active Hydrazide

Yu Hua ZHANG, Wei Qiang ZHANG, Yu Gang CHEN, Zhi CHEN, Xin Yi ZHU, Huan Wang JING, Yuan Qi YIN

中国化学快报. 2001, 12(01): 69-70.

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可视化

A new kind of hydrazone (I) diastereoisomers was prepared with enantiomeric hydazide (Ⅱ) and chiral cluster (Ⅲ), which was characterized by HMBC. Unfortunately, the mixture could not be separated into pure diastereoisomer. This could be a direction to separate the racemic chiral clusters.

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A New Monodisperse Reactive Resin with Active Groups on the Particle Surface

Yu Han GUO, Tian Sheng SU

中国化学快报. 2001, 12(01): 71-72.

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可视化

A novel reactive resin as active support was synthesized by an improved method based on seed swelling and surface coating polymerization. The resin is monosized beads with inner nucleus of cross-linked polymer and surface layer of copolymer containing epoxy groups. The physico-chemical structures of beads were characterized.

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The Character of Photo-electrochemistry of Palladium Implanted TiO₂ Nano-crystalline Electrode

Cun Zhong ZHANG, Jing YANG, Zhong Da WU, Sheng Min CAI, En Qin GAO

中国化学快报. 2001, 12(01): 73-74.

摘要 ( )

可视化

A new electrode was prepared by using Pd implanted into nano-crystalline TiO₂ and the character of photo-electrochemistry of implanted electrodes was investigated. The energy band structure of nano-crystalline TiO₂ has not changed after implantation with Pd. The photo-current (i_ph) of palladium implanted TiO₂ nano-crystalline electrode is larger than that of pure TiO₂ nano-crystalline electrode.

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Why Static O-H Bond Parameters Cannot Characterize the Free Radical Scavenging Activity of Phenolic Antioxidants:ab initio Study

Hong Yu ZHANG, You Min SUN, De Zhan CHEN

中国化学快报. 2001, 12(01): 75-78.

摘要 ( )

可视化

The static O-H bond parameters including O-H bond length, O-H charge difference, O-H Mulliken population and O-H bond stretching force constant (k) for 17 phenols were calculated by ab initio method HF/6-31G^**. In combination with the O-H bond dissociation enthalpies (BDE) of the phenols determined by experiment, it was found that there were poor correlationships between the static O-H bond parameters and O-H BDE. Considering the good correlationship between O-H BDE and logarithm of free radical scavenging rate constant for phenolic antioxidant, it is reasonable to believe that the ineffectiveness of static O-H bond parameters in characterizing antioxidant activity arises from the fact that they cannot measure the O-H BDE.

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A Calorimeter for Measuring the Enthalpy of Solution of Solid Solutes in supercritical Fluids and Study of CO₂-Naphthlene System

Xiao Gang ZHANG, Guang Ying YANG, Bu Xing HAN, Xi Feng ZHANG, Hai Ke YAN

中国化学快报. 2001, 12(01): 79-80.

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可视化

An apparatus for measuring the enthalpy of solution of solids in supercritical fluids (SCFs) was constructed. The enthalpy of solution (ΔH) of naphthalene in supercritical (SC) CO₂ was measured at 308.15 K in the pressure range from 8~11 MPa. It was found that ΔH was negative in the pressure range from 8 to 10 MPa, and the absolute value of ΔH decreases with increasing pressure. However, ΔH became positive at the pressures higher than 10 MPa. This unusual phenomenon can be explained by clustering between CO₂ and naphthalene.

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Effect of Molecular Size of Solutes on Their Partial Molar Volumes in Supercritical n-Pentane

Xiao Gang ZHANG, Hai Fei ZHANG, Bu Xing HAN, Bao Ke ZHANG, Qing HUO

中国化学快报. 2001, 12(01): 81-82.

摘要 ( )

可视化

The densities of n-pentane, methane-n-pentane, propane-n-pentane, n-heptane-n-pentane, and n-decane-n-pentane binary mixtures were determined at 476.5K in the pressure range from 2 to 5 MPa. The partial molar volumes of the solutes in n-pentane were calculated using the density data. It was found that the partial molar volumes of methane and propane are positive. while those of n-heptane and n-decane are negative.

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NO Decomposition on Rh Supported CNTs

Shui Hua TANG, Bao Chun LIU, Qi LIANG, Li Zhen GAO, Liang Fu ZHANG, Zuo Long YU

中国化学快报. 2001, 12(01): 83-86.

摘要 ( )

可视化

The decomposition of NO has been studied in a steady flow reactor on fresh carbon nanotubes (CNTs), purified CNTs, Rh/p-CNTs and Rh/γ-Al₂O₃ between 573 K and 973 K. NO decomposition at 573 K was initially complete over a reduced surface. The amount of NO absorption increased at temperature below 773 K. 100% NO conversion and more than 100% N₂ activity was achieved at 973 K for 150 min on p-CNTs and f-CNTs.

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Topographies of Organized Monolayer of α-Amylase Observed by Atomic Force Microscopy

Lin HE, Xian Fu LIN, De Shui LV, Zhi Chun CHEN

中国化学快报. 2001, 12(01): 87-90.

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可视化

In this paper, α-amylase organized monolayer was assembled on the surface of the PET-CO₂-substrate in different conditions. The different topography of the α-amylase/PET monolayer was obtained by AFM in tapping mode.

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Dielectric Spectroscopy Study on Vesicles of CTAB/SDBS System

Su Xiang WEI, Ying LI, Kong Shuang ZHAO

中国化学快报. 2001, 12(01): 91-94.

摘要 ( )

可视化

Amphiphilic molecules can form into different structures, such as micelle, microemulsion, vesicle, liposome, liquid crystals, and so on by self-associating. The Dielectric Spectroscopy (DS) method has been applied to the systems of micelle and microemulsion successfully. For the first time the author put the method to the system of vesicle of CTAB/SDBS. The experiments show clear dielectric relaxation and the results were discussed primarily.

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2001年, 第12卷, 第01期　刊出日期：2001-01-20

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2001年, 第12卷, 第01期 刊出日期：2001-01-20

2001年, 第12卷, 第01期　刊出日期：2001-01-20