中国化学快报

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α-AMIDOALKYLATION VIA SULFONES:TOWARDS THE SYNTHESIS OF ANT VENOM ALKALOIDS

Pei Qiang HUANG, Xiang Su FEI, Hong ZHENG

中国化学快报. 1995, 6(09): 739-742.

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可视化

We described the synthesis of two S-substituted γ-lactams 1 and 11 by sulfone-based α-amidoalkylation method.This constitutes the formal synthesis of ant venom alkaloids 2 and 3 in racemic form.The key intermediate 18 for the chiral synthesis of 2 and 3 was prepared from new chiral sulfone 7 by the same method.

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A NOVEL REARRRANGEMENT OF as-TRIAZOLIUM SALT TO 5-AMINOIMI DAZOLE DERIVATIVE

Hong Kui ZHANG

中国化学快报. 1995, 6(09): 743-744.

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可视化

The rearrangement of as-triazolium salt (1) to 5-amino-1(2, 4-dichloro)benzyl-4-(2, 2-dimethyl) propionylimidazole (2) with NaH in dimethylformamide(DMF) is described.

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SELECTIVE REDUCTION OF NITROARENE MEDIATED BY AN INSOLUBLE RESIN WITH VIOLOGEN STRUCTURE AS ELECTRON-TRANSFER CATALYST

Fu Tian LIU, Hong LI, Bing Lin HE

中国化学快报. 1995, 6(09): 745-746.

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可视化

The substituted nitroarenes were reduced effectively to the corresponding aniline derivatives by an insoluble resin with viologen structure as an electron-transfer catalyst (ETC) in dichloromelhane-resin-water three-phase system.

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A CONVENIENT STEREOSELECTIVE SYNTHESIS OF CONJUGATED 1E, 3E-DIENYL-DIENYL-DIETHYL PHOSPHONATE AND 1E, 3E-DIENYLDIPHENYL PHOSPHINE OXIDE

Chun Lin MA, Xi Yan LU, Yong Xiaug MA

中国化学快报. 1995, 6(09): 747-750.

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The 1E, 3E-dienyldiethyl phosphoniate and 1E, 3E-dienyldiphenyl phoephine oxide were synthesized via isomerization of alkynyldiethyl phosphonate and alkynydiphenyl phosphine oxide effected by tributyl-phosphine.

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SYNTHESIS AND APPLICATION OF VINYL DITHIOCARBAMATES

Lu Ling WU, Xian HUANG

中国化学快报. 1995, 6(09): 751-752.

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In the presence of potassium t-butoxide, N, N-dimethylamino thiocarbonyl thiomethyl triphenylphosphonium bromide formed the corresponding ylide in situ, which can undergo Wittig reaction with aldehydes to give vinyl dithiocarbamates in high yields.If the esters were hydrolyzed with ethanol aqueous sodium hydroxide, a new method to lengthen aldehydes by one carbon atom was a-complished.

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STUDIES ON THE SYNTHESIS OF TRACHYLOBAGIBBERELLINANALOGUE(Ⅱ)SYNTHESIS OF DIMETHYLESTER OF 3-HYDROXY-△^1,10-12, 16-CYCLOGIBBERELLIN 12

Xiao Dong NIE, Wen Ge XIE, Gang LIN, Mao Sen SONG, Xin Fu PAN

中国化学快报. 1995, 6(09): 753-754.

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可视化

A concise route to a trachylobagibberellin analogue-dimethyl ester of 3-hydroxy-△^1,10-12, 16-cyclogibberellin 12 was reported in this paper, starting from GA₃ in eight steps.

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CHEMICAL INCORPORATING INSECTICIDES 1.SYNTHESIS OF NEWPYRETHROIDS WITH ORGANOPHOSPHATE AS POTENTIAL INSECTICIDES

Er Le ZANG, Shi Yang XU, Ping LI

中国化学快报. 1995, 6(09): 755-758.

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Several potential insecticides were synthesized by incorporating chrysanthemic acid and O, O-dialkyl phosphoro-dithioate through a pyrrolindine-2, 5-dione group.Their structures were determined by elementary analysis, NMR, IR and MS.

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OPIOID δ RECEPTOR IRREVERSIBLE INHIBITORS 1.SYNTHESIS AND ABSOLUTE CONFIGURATION OF OHMEFENTANYL ISOTHIOCYANATE ENANTIOMERS

Zhi Xian WANG, You Cheng ZHU, Ru Yun JI

中国化学快报. 1995, 6(09): 759-762.

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The synthesis of eight enantiomers of ohmefentanyl isothiocyanate and the determination of their absolute configuration were described.

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OPIOID δ RECEPTOR IRREVERSIBLE INHIBITORS 2.SYNTHESIS OF ISOTHIOCYANATE DERIVATIVES OF CARFENTANIL AND 4-METHOXYMETHYLFENTANYL

Zhi Xian WANG, Jing YANG, You Cheng ZHU, Ru Yun JI

中国化学快报. 1995, 6(09): 763-764.

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可视化

The synthesis of isothiocyanate derivatives of carfentanil and 4-methoxymethyl-fentanyl was described.

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OPIOID δ RECEOTIR IRREVERSIBLE INHIBITORS 3.SYNTHESIS OF AMIDE ANALOGHES OF SUPERFIT CARFIT AND METHOFIT

Zhi Xian WANG, Wu Cheng ZHU, Ru Yun JI

中国化学快报. 1995, 6(09): 765-768.

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The synthesis of 2-furancarboxamide, 2-thiophenecarboxamide and 2-tetrahydro-furancarboxamide analogues of SuperFIT, CarFIT and MethoFIT was described.

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SYNTHESIS OF POLYSUBSTITUTED AROMATIC COMPOUNDS 3.THE DIELS-ALDER REACTION OF PHENYLSELENO SUBSTITUTED DIENES WITH DIMETHYL ACETYLENEDICARBOXYLATE

Guang Dlan HAN, Guo Feng HUANG

中国化学快报. 1995, 6(09): 769-770.

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可视化

The phenylseleno substituted aromatic compounds were prepared via the Diels-Alder reaction of phenylseleno substituted dienes with dimethyl acetyienedicarboxylate followed by DDQ dehydrogenation.

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ANTI-CANCER DRUGS COMPOSED OF NONNOBLEMETAL COORDINATION COMPOUNDS

Jing Jiang LIU, Yan Zhong WANG, Rui HAN, Hong Yan LIU

中国化学快报. 1995, 6(09): 771-772.

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可视化

The designed and synthesized compounds are the coordination compounds between MCl₂(M=Cu, Co, Mn) and the Mannich base made by methyl piperizine and tetracycline hydrochloride.The cancer cells of HCT-8, KB, A2780, MGC80-1 and Bel7402 are significantly inhibited by the drugs in vitro.The inhibition ratio of S-180 tumor by the compound of M=Cu is 30% on 10mg/kg level of feed from the in vivo experiments of female white mice.

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CATALYTIC HYDROGENATION OF FULLERENE

Guo Xiao DONG, Jie Jun WANG, Ji Sheug LI

中国化学快报. 1995, 6(09): 772-774.

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可视化

Hydrogenation of fullerene catalyzed by palladium was studied.FD-Ms spectrum exhibited that C₆₀H₁₂ and C₆₀H₂₀, among the mixture of adducts C₆₀H_2n (n=1 to 26) were the main products.The mechanism for the hydrogenation of fullerene under our conditions is described.

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TWO NEW CONSTITUENTS FROM UVARIA MICROCARPA

Yu Ping LU, Qing MU, Hui Lan ZHENG, Chao Ming LI

中国化学快报. 1995, 6(09): 775-778.

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Two new polyhydroxy heptene derivatives, named microcarpin A and microcarpin B, were isolated from Uvaria microcarpa Champ ex Benth.Their structures were determined by the means of spectroscopy and chemistry.

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A NOVEL IRIDOID GLUCOSIDE ISOLATED FROM LAMIOPHLOMIS ROTATA

Jin Hai YI, Yan CHEN, Ze Yuan LUO, Xian Zhong YAN

中国化学快报. 1995, 6(09): 779-782.

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可视化

A new iridoid, lamiophlomiside, was isolated from the root of Lamiophlomis rotata and its structure was elucidated mainly on the basis of spectroscopic data for the glucoside itself and its bis-benzylidene derivatives.

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DETERMINATION OF HISTIDINE BY DIFFERENTIAL PULSE ADSORPTIVE STRIPPING VOLTAMMETRY OF ITS NICKEL(Ⅱ)COMPLEX

Xiao Li ZHANG, Cheng Song CIA, Lui Ai DENG

中国化学快报. 1995, 6(09): 783-786.

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可视化

Histidine was determined at the 5.0×10^-6-1.0×10^-6mol/L level by differential pulse adsorptive cathodic stripping voltammetry at a hanging mercury drop electrode using the reduction peak of its nickel(Ⅱ) complex at-1.16v(vs.Ag/AgCl) obtained in pH-10.2 borate buffer solution.Other amino acids do not interfere.This method has been used for the direct determination of histidine in serum.

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THE COLOUR REACTION OF CADMIUM WITH 1-(2-BENZOTIIIAZOLYL)-3-(4-PHENYLAZOPHENYL)-TRIAZENE AND ITS APPLICATION

Chu Ru GONG, Zhi Gang SHE, Hao Xing XU, Bin XU

中国化学快报. 1995, 6(09): 787-788.

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可视化

A new triazene reagent 1-(2-benzothiazolyl)-3-(4-phenylazophenyl)-triazene (BTPAPT) has been synthesized.The colour reaction of BTPAPT with Cd (Ⅱ) has been studied.At pH=9~11, in the presence of Triton X-100, the reagent with Cd (Ⅱ) forms a complex with high sensitivity, the molar ratio of Cd (Ⅱ) to BTPAPT is 1:2.The molar absorptivity is 1.4×10⁵L·mol^-1·cm^-1, Beer's law is obeyed for Cd (Ⅱ) in the range of 0-14μg/25ml.

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MICELLE-SENSITIZED DERIVATIVE VARIASLE-ANGLE SYNCHRONOUS FLUORESCENCE FOR SIMULTANGOUS DETERMINATION OF 2, 2' DIHYDROXYBEPHENYL AND 4-HYDROXYBIPHENYL

Yao Qun LI, Lei SHI

中国化学快报. 1995, 6(09): 789-790.

摘要 ( )

可视化

A new method of micelle-sensitized derivative variable-angle synchronous spectrofluorometry has been developed for the simultaneous determination of 2, 2'-dihydroxybiphenyl (DHP) and hydroxybiphenyl (HP).The locations of variable-angle synchronous fluorescence peaks for DHP and HP coincide with those of excitation and emission peaks in routine spectra.The spectral interference of analyte can be overcome by derivative technique.The method is rapid and sensitive.

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A STREAM-LINED PROCEDURE FOR DETERMINATION OF STARCH, NON-STARCH POLYSACCHARIDES AND FREE SUGARS IN CEREALS

Fi Li TIAN, Tao BAI An, She GAO, Chimuge SAREN, Mingan CHOCT

中国化学快报. 1995, 6(09): 791-794.

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可视化

A stream-lined assay has beem developed for the determination of monosaccharides and oligosaccharides (free sugars), starch, soluble and insoluble non-starch polysaccharides of cereals and cereal products on a one-sample basis.After extraction of the free sugars with 80% ethanol, the sample is extracted in acetate buffer(pH 5.0)with highy specific α-amylase and amyloglucosidase to degrade the starch, at the same time the non-starch polysaccharides (NSP) are fractioned into soluble and insoluble fractions.An aliquot from the supernatant containing the glucose released from starch is taken and analysed for starch using a glucose-oxidase/peroxidase method.The free sugars, soluble and insoluble NSP are then hydrolysed with acids and the released monosaccharides are reduced and acetylated.The resulting alditol acetates are accurately quantified using GC fitted with a capillary column in addition to accurately quantifying each of the monosaccharide constituents of the NSP, the procedure also gives accurate values for starch and free sugars.

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TRANSIENT PHOTOCURRENT INVESTIGATION OF PHOTO PROCESSES OF LATTICE-MATCHED MQW GaAs/As_XGa_1-XAs ELECTRODE

Yao LIU, Yuan LIN, Xu Rui XIAO, Xue Ping LI, Hai Qun ZHENG, Yi Ping ZENG, Dian Zhao SUN

中国化学快报. 1995, 6(09): 795-796.

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可视化

Transient photocurrents induced by short light pulses at lattice-matched GaAs/Al_xGa_1-xAs multiple quantum well (MQW) electrodes were studied as a function of elelctrode potential.Dual exponential photocurrent decay transients were observed at various potentials.By analysis of the dual exponential decay transients, information on steady state photocurrents (I_S), surface collection of photoexcited minority carriers (G₀) and lifetimes of surface states (T_S) was obtained.The kinetic behaviors of photoprocesses at illuminated MQW/electrolyte interface were discussed.

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AM1 METHOD STUDY OF THE THERMOLYSES OF HALOACETYL PEROYNITRATES

Yong Hong LI, Shen WANG, San Guo HONG

中国化学快报. 1995, 6(09): 797-800.

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可视化

AMI MO method has been used to study the thermal decomposition of CF₃C(O)O₂NO₂, CClF₂C(O)O₂NO₂ CCl₂FC(O)O₂NO₂ and CCl₃C(O)O₂NO₂.The results obtained show that the thermolyses of these compounds are unimolecular decomposotion reactions.

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THE STACKING INERACTION OF TERNARY COMPLEXES OF Zn(ATP)^2- AND PYRIDINE-LIKELIGANDS

Xue Yi LE, Fu Hai WU, Fen Yun SONG, Liang Nian JI

中国化学快报. 1995, 6(09): 801-804.

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可视化

The stability constants of ternary complexes of the type Zn(ATP)L^2-, where L=pyridine, 4-picoline, 3, 4-lutidine and 3, 5-lutidine, have been determined by potentiometric pH titration in aqueous solution and compared with the stability of the corresponding binary complexes ZnL²⁺.It has been observed that there is a stacking interaction between the pyridine ring of the pyridine-like ligands and the purine moiety of ATP in the ternary Zn(ATP)L^2- complexes and this stacking interaction is stronger than that in corresponding Co (ATP) L^2- complexes.

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A NEW METHOD FOR SYNTHESIZING 2-ALKOXYCARBONYLETHYLTIN TRICHLORIDES AND THEIR DIMETHYLSULFOXIDE COMPLEXES

Lai Jin TIAN, Fang Xin FU, Hua De PAN

中国化学快报. 1995, 6(09): 805-806.

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可视化

A new method based on transesterification reactions for synthesizing 2-alkoxycar-bonylethyltin trichlorides(1) and their dimethylsulfoxide complexes (2) was reported.1 and 2 were characterized by elemental analysis, IR and ¹HNMR spectra.The possible mechanism for their trans esterifications was suggested.

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PERFORMANCE AND CHARACTERIZATION OF NOVEL ELECTROCATALYST FOR OXYGEN REDUCTION

YongYANG, Jin Kua YOU, Zu Geng LIN

中国化学快报. 1995, 6(09): 807-810.

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可视化

The preparation and characterization of novel electrocataiyst for oxygen reduction have been carried out.It is found that heated Fe-PPy/C catalysts show good catalytic activity for oxygen reduction in alkaline or acid solutions.Direct correlation between ESR signal and catalytic activity of the catalysts has been obtained.Some implications from this catalytic system have also been discussed.

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EXPLORATION ON THE BASIC ACTIVE CENTRES OF KF/Al₂O₃: EFFECTOF PRETREATMENT TEMPERATURE

Jian Hua ZHU, Hideto TSUJI, Hajime KABASHIMA, Hideshi HATTORI, Hideaki KTTA

中国化学快报. 1995, 6(09): 811-814.

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可视化

KF/Al₂O₃ reached maximum activity at the pretreatment temperature(T_p) of 623K or 723K in 1-butene isomerization at 273K, according to the amount of KF loaded.Further increment of T_p lowered the activity of KF/Al₂O₃ due to the suppression of[Al-OH^-F]strong basic sites through dehydroxylation.Changes in the state and function of F^- caused the deactivation of KF/Al₂O₃ at high T_p.

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BASIC FUNCTION OF PARALLY HYDRATED FLUORIDE SPECIES ON SUPPORTED KF

Jian Hua ZHU, Hajime KABASHIMA, Hideshi HATTORI, Hideaki KITA

中国化学快报. 1995, 6(09): 815-818.

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可视化

Preadsorption of H₂O promotes CO₂ adsorption on KF or KF/CaF₂, and provokes appearance of bicarbonates on KF/Al₂O₃.The existence of partially hydrated fluoride species was confirmed, but they were not the main active sites for 1-butene isomerization.Oxygen element is proved to be necessary in carrier to create strong basic sites through the interaction between dispersed KF and support.

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CATALYTIC ACTIVITY AND OF SUPPORTED W₂N HYDRODENITROGENATION CATALYST

Lei SHI, Xin Ping WANG, Qin XIN

中国化学快报. 1995, 6(09): 819-822.

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可视化

Tungsten nitride supported over activated carbon has been used as the catalyst for pyridine hydrodenitrogenation(HDN) for the first time.It has been found that W₂N/C has high catalytic activity and selectivity for HDN.

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NOVEL PEROXO COMPLEXES OF RARE EARTH METALS CONTAINING 1, 10-PHENANTHROLINE AS A COLIGAND

Jun Feng BAI, Liu Fang WANG, Ji Gui WU

中国化学快报. 1995, 6(09): 823-836.

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可视化

Six novel peroxo complexes of rare earth metals containing 1, 10-phen as a coligand Re₂H₂O₂phen₂Cl₅·nC₂H₅OH (n=0.5 for La, Nd;n=1 for Sm, Gd, Dy, Y)have been prepared.They were characterized by elemental analysis, IR, TG-DTA and X-ray powder diffraction.

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STUDIES ON THE DECOMPOSITION OF H₂O INTO H₂ WITH OXYGEN-DEFICIENT MAGNETITE

Chun Lei ZHANG, Xu Guang HU, Zhi Qiang LIU, Tong Hao WU, Shao Yi PENG

中国化学快报. 1995, 6(09): 827-830.

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可视化

The oxygen-deficient magnetite (Fe₃O_4-δ, (δ>0) was obtained by the reduction of Fe₃O_4+δ)(δ>0) with CO and the decomposition reactivity of H₂O was studied on Fe₃O_4-δ, (δ>0).The results showed that H₂O was reduced to H₂ at 563K.The larger the oxygen-deficiency of magnetite, the higher the decomposition activity of H₂O.

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SYNTHESIS, CRYSTAL STRUCTURE AND MAGNETISM OF THE COMPLEX:GdFe(CN)₆·4H₂O

Jing Min SHI, Dai Zheng LIAO, Peng CHENG, Zong Hui JIANG, Geng Lin WANG, Xin Kan YAO, Hong Gen WANG

中国化学快报. 1995, 6(09): 831-832.

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可视化

a novel three dimensional network complex polymer, namely, GdFe(CN)₃)·4H₂O, has been synthesized from a water solution of gadollinium chloride and potassium ferricyanide.The complex crystallized in the monoclinic system, space group c₂, with a=12.759(6), b=7.404(1), c=13.654(5)A, s=4, β=90.22(3), Mr=441.33, Dc=2.28g/cm², μ(Mo K_∞))=38.36cm^-1, F(000)=832, R=0.065 for 1048 independent observed reflections.The coordinated environment of Fe(Ⅲ) ion and Gd(Ⅲ) ion are distorted octahedron and 4-capped trigonal prism, respectively.The variable-temperature magnetic susceptibility of the complex was measured over 4.2-300K, giving the exchange integral 2J=-138.2cm^-1 and indicating that a mediate antiferromagnetic spin-exchange interaction between the Fe (Ⅲ) ions and the Gd(Ⅲ) ions within each binuclear unit.

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1995年, 第6卷, 第09期　刊出日期：1995-09-20

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本期目录

1995年, 第6卷, 第09期 刊出日期：1995-09-20

1995年, 第6卷, 第09期　刊出日期：1995-09-20