中国化学快报

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PREPARATION AND CHARACTERIZATION OF A NEW COENZYME B₁₂ ANALOGUE CONTAINING 2',3'-DIDEOXYURIDINE

Bao Hua ZHU, Hong YAN, Lai Bin LUO, Ze Hua LIU, Hui Lan CHEN

中国化学快报. 1996, 7(06): 503-504.

摘要 ( )

可视化

A new kind of coenzyme B₁₂ analogue 2',3',5'-trideoxyuridinyl-cobalamin (ddUCbl) was first synthesized by an improved method in which 5'-O-toluenesulfonyl-2',3'-dideoxyuridine was first transformed into 5'-iodo-2',3'-dideoxyuridine and then reacted with reduced hydroxocobalamin.The new analogue was characterized by UV-vis and ¹HNMR spectroscopy.

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REACTION OF 3,7-DINITRODIBENZOBROMOLIUM BISULFATE WITHSOME NUCLEOPHILES

Zi Jie HOU, Huei ZHANG, Zian Hua ZHANG

中国化学快报. 1996, 7(06): 505-506.

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可视化

Reaction of 3,7-dinitrodibenzobromolium bisulfate with some nucleophiles were studied.Primary products of reactions are 2-bromo-2'-Nu-4-4 '-dinitro-biphenyls.

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A SYNTHESIS OF TETRAMETHYL ETHER OF ROSMARINIC ACID BENZYL ESTER

Yan ZHUANG, Zong Ru GUO, Guang Zhong YANG, Xiao Tian LIANG

中国化学快报. 1996, 7(06): 507-508.

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可视化

A rosmarinic acid derivative,tetramethyl ether of rosmarinic acid benzyl ester,was synthesized.This is the first report of building this structural skeleton.

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STUDIES ON THE SYNTHESIS AND REACTIONWITH ALKOXIDES OF 3-OXO-1,2-BENZOISOTHIAZOLINE-2-ACETAMIDE1,1-DIOXIDES

Guo Feng ZHAO, Hua Zheng YANG

中国化学快报. 1996, 7(06): 509-510.

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可视化

New 3-oxo-benzoisothiazoline-2-acetamide 1,1- dioxides (Ila-b) were synthesized and whose reaction with alkoxides was studied.The reaction results indicated that different products were obtained owing to the different time of reaction with alkoxides.

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NOVEL OXIDATION OF HEXABENZYLHEXAAZA-ISOWURTZITANE BY Me₂CHNO₂/CuCl/Py/O₂

Xiao Pei GUAN, Hong YAN, Jian Guang SUN, Yong Zhong YU

中国化学快报. 1996, 7(06): 511-512.

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Treatment of 2,4,6,8,10,12-hexabenzyl-2,4,6,8,10,12-hexaazatetracyclo-[5.5.0.0^3.9.0^3.11]dodecane (1) with Me₂CHNO₂/CuCl/Py/O₂ results in C (1)-C (7); oxidative cleavage to give 1,3.4,5,7,8-hexabenzyt-2,6-dioxo-cis-cisoid-cis-decahydro-1H,5H-diimidazo [4,5-b:4',5'-e] pyrazine (2).

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SYNTHESIS OF PROPYLENE CARBONATE CATALYZED BY ANION EXCIIANGE RESINS

Hong ZHU, Li-Ban CHEN,Ying-Yan JIANG

中国化学快报. 1996, 7(06): 513-514.

摘要 ( )

可视化

The iodide form of anion exchange resins with quaternary ammonium could effectively catalyze the synthesis of propylene carbonate from carbon dioxide and propylene oxide in proper dipolar aprotic solvents.The resins could be reused for many runs without much loss of catalytic activity.

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STUDIES ON HETEROMACROCYCLIC POLYETHER (XIV) THE SYNTHESIS OF SELENA CROWN ETHER WITH HYDROXY GROUP AND DISELENA-AZA-CROWN ETHER

Han Sheng Xu, Jun Wu, Guang Ya Xiang, Xin Fang Liu

中国化学快报. 1996, 7(06): 515-518.

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可视化

This paper reports the synthesis of selenacrown ethers with hydroxy group and disclenaaza-crown ethers.

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SYNTHESIS OF PROPYLENE GLYCOL AND DIMETHYL CARBONATE USING POLYMER-SUPPORTED CATALYSTS

Hong ZHU, Li Ban CHEN, Ying Yan JIANG

中国化学快报. 1996, 7(06): 519-522.

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可视化

Two types of effective transesterification catalysts including ordinary anion exchange resins and polymer-supported triphenyl phosphines are used to synthesize propylene glycol and dimethyl carbonate from propylene carbonate and methanol.The experimental results show that the products can be obtained under moderate conditions using these catalysts.Triphenyl phosphine polymeric catalysts are found thermally stable by thermogravimetry (TG).

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SYNTHESIS AND CHARACTERIZATION OF NOVEL FUNCTIONAL HOST COMPOUND 2^[1] MONO-[6-O-(8-QUINOLYL)]-β-CYCLODEXTRIN

Yu LIU, Yi Min ZHANG, Yun Ti CHEN

中国化学快报. 1996, 7(06): 523-526.

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可视化

A novel β-cyclodextrin (β-CD) derivative (2) bearing a single 8-quinolyl moiety has been synthesized by a convenient method in 41.4% yield,and the compound was characterized by ¹H-NMR,FT-IR spectra and elemental analysis,etc.The spectrophotometric titrations have been performed in buffered aqueous solution (pH=7.20) to give the complex stability constants (K) and Gibbs free energy changes (-△G·) for the 1:1 inclusion complexation of some amino acids guest molecules with host compound (2) and mono-(6-anilino)-β-cyclodextrin (1).

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THE SYNTHESIS OF ARYLOXY-CARBOXYLIC ACID UNDER MICROWAVE,SOLID BASE AS A SUPPORT

Zhong Yi WANG, Hai Jian SHI, HaoXin SHI, ZiYi ZHANG

中国化学快报. 1996, 7(06): 527-530.

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A series of aryloxy-acetic acids were synthesized by the reaction of substituted phenols with chloroacetic acid under the condition of microwave irradiation and with solid base as a support.This method has the advantage of better yields,shorter reaction time,and convenience.

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SELECTIVE OXYGENATION OF CYCLOHEXENE WITH DIOXYGEN USING POLYOXOMETALATE INTERCALATED LAYERED DOUBLE HYDROXIDES

Jun GUO, Qing Ze JIAO, Guang XIONG, Hui Juan LU, Da Zhen JIANG, En Ze MIN

中国化学快报. 1996, 7(06): 531-534.

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可视化

Cyclohexene was selectively oxidized with dioxygen by polyoxometalate intercalated layered double hydroxides to produce 2-cyclohexene-one and 2-cyclohexene-ol under mild reaction conditions.

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SYNTHESES OF DITOPIC RECEPTOR MACROCYCLES

Bin ZHAO, Yang Jie WU,Jing Chao TAO, Han Zhen YUAN

中国化学快报. 1996, 7(06): 535-538.

摘要 ( )

可视化

Six kinds of new ditopic receptor macrocycles were synthesized by the condensation of 1,10-bis(4-formylphenyl)-1,4,7,10-tetraoxadecane or 1,10 —bis(4 —formyl-2-methoxyphenyl)-1,4,7,10-tetraoxadecane with polyamines.The macrocycles were characterized by elemental analysis,IR,¹H NMR.

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A SIMPLE,EFFICIENT PROCEDURE FOR TIIE SYNTIIESIS OF SOME AMINO ACID LINKED URREIDO PHOSPHORAMIDATE DERIVATIVES

Ru Yu CHEN, Jia ZHOU

中国化学快报. 1996, 7(06): 539-542.

摘要 ( )

可视化

N',N'-bis(2-chloroethyl)-O-aryl-N³-ethoxycarbonyl substituted methylene ureido phosphoramidates (2) designed as promising antivirus and antitumor agents have been synthesized in excellent yields via the corresponding thiourea derivatives (1) involving a homogeneous desulphunsation reaction as the key step and the possible mechanism is proposed herein.The stability and cleavage of acid-catalyzed hydrolysis of 2 are also discussed.

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BIOTRANSFORMATION OF 2α,5α,10β,14β-TETRA-ACETOXY-4(20),11-TAXADIENE BY THE FUNGUS CUNNINGHAMELLA ECHINULATA

Shang Hui HU, Xu Fang TIAN, Wei Hua ZHU, Qi Cheng FANG

中国化学快报. 1996, 7(06): 543-544.

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可视化

2α,5α,10β,14β-Tetra-acetoxy-4(20),11-laxadiene (1) could be regioselectively transfonned into 6α,10β-dihydroxy-2α,5α,14β-triacetoxy-4(20),11-taxadiene (2) by Cunninghamella echinulata in fair yield.6β,10β-Dihydroxy-2α,5α,14β-triacetoxy-4(20),11-taxadiene (3).10β-bydroxy-2α,5α,14β- triacetoxy-4(20),11-taxadiene (4),10β-hydroxy-4β,20-epoxy-2α,5α,14β-triacetoxy-tax-11-ene (5) as minor products were also isolated.

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STUDIES ON THE TOTAL SYNTHESIS OF CIMICIFUGAMIDE FROM CIMICIFUGA DAHURICA

Ping Yu DING, Xiao Xiang ZHU, Meng Shen CAI, De Quan YU

中国化学快报. 1996, 7(06): 545-548.

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可视化

Cimicifugamide,a new natural compound isolated from the roots of Cimicifuga dahurica,was totally synthesized by a reaction sequence of seven steps in an overall yield of 31%.D-Galactose was used as starting material,trifluoroacetoxy was used as leaving group at C-1.The target product was characterized by IR,MS,¹H-NMR,¹³C-NMR and elemental analysis.

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STUDIES ON DERIVATIVES OF CLERODANE DITERPENOIDS FROM AJUGA DECUMBENS

Huan ding CHEN, Ning XIE, Zhi Da MIN

中国化学快报. 1996, 7(06): 549-552.

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可视化

Some derivatives of neo-clerodane diterpenes ajugacumbin A and B isolated from Ajuga decumbens were prepared by various chemical transformations,and the results achieved in the biological assay as insect antifeedants of these neo-clerodane derivatives are also reported.

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A NEW ISOPRENOID-SUBSTITUTED ISOFLAVANS FROM BOOTS OF MAACKIA TENUIFOLIA

Jia Feng ZENG, Guo Lin LI, Xin XU, Da Yuan ZHU

中国化学快报. 1996, 7(06): 553-544.

摘要 ( )

可视化

From the roots of Maackia temfolia,a new isoprenoid-substituted isoflavan was isolated and elucidated as Tenuifolin A (1)

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STRUCTURE OF OMEIENINE

Qing Yan XU, Feng Peng WANG

中国化学快报. 1996, 7(06): 555-556.

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可视化

A new lycoctonine-type norditerpenoid alkaloid,.omeienine 1,was isolated from the roots of Delphinium omeiense W.T.Wang.Its structure was elucidated by spectral methods.

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NEW ALDALOIDS TONGOLINE AND TONGOLININE FROM DELPHINIUM TONGOLENSE

Lan HE, Yao Zu CHEN, Li sheng DING, Bo Gang Li

中国化学快报. 1996, 7(06): 557-560.

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可视化

Two new diterpenoid alkaloids,tongoline (1) and tongolinine (2) were isolated from the whole plants of Delphinium tongolense F.,Their structures were determined on the basis of spectral data.

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MURICATALICIN,A NEW PEWTA-HYDROXY DERIVATIVE OF ACETOGENIN FROM ANNONA MURICATA (ANNONACEAE)

Huo Qing GUI, Jing Guang YU

中国化学快报. 1996, 7(06): 561-564.

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可视化

Muricatalicin (2),a new acetogenin-(polyketide) has been isolated from the seed of Annona muricata L.Its structure and relative stereochemistry were elucidated on the basis of the spectral analysis.Muricatalicin (2) is a C₃₅ mono-tetrahydrofuranyl (THF) acetogenin possessing five hydroxyl groups at C-4,C-7,C-13,C-15 and C-20.The relative configuration from C-15 through C-20 were determined as threo,trans and threo configuration.

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THE SYNTHESIS AND CHARACTERIZATION OF A NOVEL MIXED-VALENCE ISOPOLYVANADATE

Jia Ning XU, Guo Yu YANG, Wen Ying MA, Zhi Zhong Sun, Ji Qing XU, Xiao Ying HUANG

中国化学快报. 1996, 7(06): 565-566.

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The present paper covers the synthesis and characterization of a mixed valence vanadate,(H₂En) V₄O₁₀ (Compound I,H₂En= H₃NCH₂CH₂NH₃),in which the V^N/V^N ratio is unity.The X-Ray diffraction pattern and DTA-TG curve are given.

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THE STUDY OF STRUCTURE AND DYNAMICS OF DINUCLEAR COMPLEXES [Mo(VI)]₂-EGTA AND [Mo(VI)]₂-EGTA BY ¹HNMR

Rui Fang SONG, Fei LI, Guang Min LIU, You Gang MAO, Fei DU

中国化学快报. 1996, 7(06): 567-568.

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The ¹H and ¹³C NMR spectra of the dinuclear complexes of molybdenum (Ⅵ) with ethylenediaminetetraacetic acid ([Mo(VI)]₂-EDTA) and 3,12-bis(carboxymethyl)-6,9-dioxa-3,12-diazatetra-decanedioic acid([Mo(VI)]₂-EGTA) at various temperatures were measured.The solution structure of the two dinuclear complexes was determined and the possible exchange process of the isomers is suggested.

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THE ISOMERIC STRUCTURES OF H₂SnLiF,THE PROTOTYPE STANNYLENOID

Hua Yu QIU, Cong Hao DENG

中国化学快报. 1996, 7(06): 569-570.

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可视化

The structures of four isomeric forms of the model stannylenoid,H₂SnLiF,have been examined by ab initio MO theory.The most stable structure is suggested to be the P-complex 1.The other three species,three-membered ring 2,σ-complex 3 and tetrahedron 4,are also local minima on the potential energy surface,but are higher in energy.

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A [70] FULLEROPYRROLIDINE:DERIVED FROM C₇₀, KETON AND α-AMINOACID

Da Gui ZHENG, Yu Liang LI, Jing Kui YANG, Dao Ben ZHU

中国化学快报. 1996, 7(06): 571-572.

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A [70] fulleropyrrolidine was obtained by refluxing the mixture of C₇₀ cyclohexanone and 2-aminoisobutyric acid in chlorobenzene under N₂.

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THE SYNTHESIS AND CHARACTERISATION OF ASYMMETRIC HYDROMETHYL BEDT-TTF

Wei QIN, Bin ZHANG, You Xin YAO, Yong Fang LI, Dao Ben ZHU

中国化学快报. 1996, 7(06): 573-576.

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可视化

A new bisethyldithionetetrathiafulvalene (ET) derivative was synthesised.The cyclic voltammogram comparison of asymmetric hydromethyl bisethyldithionetetrathiafulvalene (HMET) and ET was made.The single crystal of charge transfer complex HMETI_X was obtained and characterised.The conductivity of the single crystal was measured between room temperature and liquid nitrogen temperature.This single crystal is a semiconductor in the liquid nitrogen temperature range.

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AXIAL LIGATION AND ESR STUDIES OF 2-BENZENIMI DAZOLETHIOL -LINKED IRON(III) PORPHYRINS

Hong Shan HE, Hai Yang LIU, Jin Wans HUANG, Liang Nian JI

中国化学快报. 1996, 7(06): 577-578.

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可视化

The axial ligation properties of 2-benzenimidazolethiol-1 inked iron (Ⅲ) porphyrins are presented along with their ESR studies.

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A NEW CHEMICAL OSCILLATOR WITH A MACROCYCLIC COPPER (Ⅱ) COMPLEX AS THE CATALYST AND MALIC ACID AS THE SUBSTRATE

Liang ZHAO, Guang Li HU, Fu Xin XIE, Zhi Qiang XU, Shi Sheng NI

中国化学快报. 1996, 7(06): 579-580.

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可视化

A new Belousov-Zhabotinskii oscillator in the malic acid-NaBrO₃-H₂SO₄-[CuL] (ClO₄)₂ system,where L is 5,7,12.14-tetraethyl-7,14-dimethyl-1,4,8,11-tetraazacyclotetradeca-4,11-diene,is reported.

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AB INITIO STUDY ON GAS-PHASE FACTION OF Ca WITH HN₃

Rong Shun ZHU, Shu Shan DAI

中国化学快报. 1996, 7(06): 581-584.

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可视化

The reaction of Ca with HN₃ has been investigated theoretically by an ab initio MO method with electron correlation being taken into account by second-order M?LLER-PLESSET (MP2) perturbation theory Two possible product channels,CaN₃+H,CaNH+N₂,on the potential energy surfaces (PESs) have been examined and the reaction mechanism discussed.Values of the HN-N₂ ,H- N₃,Ca-N₃ and Ca-NH bond dissociation energy are also calculated,which are in good agreement with experiment.

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A NOVEL SYNTHETIC METHOD FOR THE CLUSTERS FeCo₂CO₉-(RCCR)(R=MeO₂C,EtO₂C).X-RAY CRYSTAL STRUCTURE ANALYSES OF THE CLUSTERS FeCo₂CO₉(MeO₂CCCCO₂Me)andCo₄(CO)₁₀ -(EtO₂CCCCO₂Et)

He Ping WU, Yuan Qi YIN, Kai Bei YU, Xiao Ying HUANG

中国化学快报. 1996, 7(06): 585-588.

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可视化

A novel synthetic method for the clusters FeCo₂(CO)₉(RCCR)(R=MeO₂C,MeO₂C),which is the reaction of Co₄(CO)₁₀(RCCR) with Na₂[Fe(CO)₄],have been found by studying on the thermal reaction between RCCo₃(CO)₉ with Na₂[Fe(CO)₄].X-ray crystal structural determinations have been made for the clusters FeCo₂(CO)₉(MeO₂CCCCO₂Me) and Co₄(CO)₁₀(EtO₂CCCCO₂Et).

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SYNTHESIS AND CHARACTERIZATION OF THE COMPLEXES OF β-ALKOXYCARBONYLETHYLTIN TRICHLORIDES WITH DBSO AND HMPA

Lai Jin TLAN, Fang Xin Fu, Hua De PAN

中国化学快报. 1996, 7(06): 589-592.

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可视化

A convenient approach based on transesterification to preparing the complexes of β-alkoxycarbonylethyltin trichlorides with dibenzylsulfoxide (DBSO) and hexamethylphosphoramide (HMPA) was reported.The structures of complexes were characterized by elemental analysis,IR,¹HNMR and X-ray single crystal diffraction.The possible mechanism for the transesterification of complexes of β-methoxycarb-onylethyltin trichloride with an alcohol was suggested.

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STUDY ON THE FLUORESCENCE OF THE SYSTEM SAMARIUM/2-BENZOYL-1,3-INDONE/CETYLTRIMETHYLAMMONIUM BROMIDE AND ITS ANALYTICAL APPLICATION

Wei JIANG, Lei WANG, Zhi Kun SI, Gui Yun ZHU

中国化学快报. 1996, 7(06): 593-596.

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可视化

The fluorescence system Sm-BID-CTAB has been discovered and its fluorescence characteristics have been studied.The excitation and emission wavelengths are 360 nm and 650 nm,respectively.The fluorescence intensity is a linear function of the concentration of samarium in the range 5.0×10^-5-2.0×10^-7mol/L.The detection limit is 5.0×10^-9 mol/L.Standard addition method is used for the determination of samarium in synthetic rare earth sample with satisfactory results.

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1996年, 第7卷, 第06期　刊出日期：1996-06-20

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1996年, 第7卷, 第06期 刊出日期：1996-06-20

1996年, 第7卷, 第06期　刊出日期：1996-06-20