中国化学快报

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A NEW SYNTHESIS OF dl-AND (R)-MUSCONE FROM CYCLODODECANONE

Da Sheng WANG, Chang Hai ZHOU, Dao Quan WANG

中国化学快报. 1992, 3(04): 235-236.

摘要 ( )

可视化

dl-And (R)-muscone were synthesized from the readily available cyclododecanone by a free radical ring expansion in overall yields of 51% and 32% respectively

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OPTICALLY ACTIVE AMINO ACIDS WITH HIGHLY BRANCHED SIDE CHAIN (I):SYNTHESIS OF D-AND L-2-AMINO-5,5-DIMETHYLHEXANOIC ACID AND 2-AMINO-6,6-DIMETHYLHEPTANOIC ACID

Zong Xuan SHEN, Jian Fsng QIAN, Wen Jin QIANG, Ya Wen ZHANG

中国化学快报. 1992, 3(04): 237-238.

摘要 ( )

可视化

The title compounds were prepared by the enzymatic resolution of the corresponding N-acetylated DL-amino acids methyl esters, which were obtained from t-butyl chloride via an 8-step synthesis

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SYNTHESIS OF ACYCLIC CROWN ETHERS WITH 1-METHYLIMIDAZOLE-2-THIO END GROUPS

Qing Jian LIU, Ming Li SHI

中国化学快报. 1992, 3(04): 239-240.

摘要 ( )

可视化

The synthesis of new acyclic crown ethers 1, 2, and 3 with methimazole as terminal group is reported

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SYNTHESIS OF 1, 1-DIALKYLTHIO-1, 3, 5-HEXATRIENES WITH α-OXOKETENE DITHIOACETALS

Qun LIU, Bao Zhong ZHAO

中国化学快报. 1992, 3(04): 241-244.

摘要 ( )

可视化

α-Oxoketene dithioacetals 2 via, 1,2-nucleophilic addition by allyl magnesium bromide afforded corresponding alcohols (3).Treated with water and catalyzed by Lewis acid, the alcohols 3 were converted regiospecifically to the conjugated 1,1-dialkylthio-1,3,5 hexatrienes (4). Both the alcohol 8 and its methoxy methyl ether 9 were sensative to dilute sulfuric acid and cyclized under this condition to form the aryl methylthio ether (10)

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AN IMPROVED METHOD TO SYNTHESIZE VITAMIN B₁₂ COENZYME ANALOGUES CONTAINING 2'-DEOXYNUCLEOSIDE

Hui Lan CHEN, Hong YAN, Wen Xia TANG

中国化学快报. 1992, 3(04): 245-246.

摘要 ( )

可视化

A new vitamin B₁₂ coenzyme analogue 2’,5’-dideoxyuridinyicobalamin and two other 2’,5’-dideoxynucleosidecobalamins of adenosyl-and thymidyl-were synthesized by an improved method, It consists in direct tosylation of the nucleoside and followed by reaction with reduced hydroxocobalamin(vitamin B₁₂). All the 2’-deozynucleoside derivatives were characterized by UV-Vis and ¹HNMR spectroscopy

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THE SOLID STATE CONTROLLED CONDENSATION REACTION OF FERROCENEALDEHYDE AND INDOLE

Ji Ben MENG, Da Ming DU, Yong Mei WANG, Ru Ji WANG, Hong Gen WANG

中国化学快报. 1992, 3(04): 247-250.

摘要 ( )

可视化

The ZnCl₂-catalyzed condensation reaction of ferrocenealdehyde and indole in the solid state gave a new product (di-3-indolyi)-methylferrocene(3). The crystal structure of product 3 was determined by X-ray diffraction method. Reactions in solution and photochemical reactions were also carried out

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THE STUDY OF ENZYMATIC SYNTHESIS OF MACROCYCLIC LACTONES

Jin Wang XU, Zu Yi LI

中国化学快报. 1992, 3(04): 251-252.

摘要 ( )

可视化

The effects of the chain length and stereo-factor of substrates and solvents on the lipase catalysed lactonization of ω-hydroxy-ester were studied, And also the catalytic effects of various enzymes were compared

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STEREOSELCETIVE SYNTHESIS OF SOME NUCLEOSIDES

Xian Yun JIAO, Meng Shen CAI

中国化学快报. 1992, 3(04): 253-254.

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可视化

A new method for the synthesis of perbenzylated, peracetylated and perbenzoylated sugar nucleosides has been carefully studied. In this method trichloroacetoxy and trifluoroacetoxy groups were displaced efficiently in the reaction of nucleoside formation as leaving group. And this method was found to be widely applicable in the study of carbohydrate chemistry

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STUDIES ON HETERO-MACROCYCLIC POLYETHER (Ⅱ). THE SYNTHESIS OF PLATINUM COMPLEX OF 10-SELENABENZO-15-CROWN-5 AND ITS CATALYTIC BEHAVIOR IN HYDROSILYLATION

Xiu Fang LIU, Wei Ping LI, Li Feng ZHANG, Xue Ran LU, Hart Sheng XU

中国化学快报. 1992, 3(04): 255-256.

摘要 ( )

可视化

The title complex (PtL₂Cl₂) was synthesized by reacting 10-selenabenzo-15-crown-5 (L) with potassium chloroplatinite. Its catalytic activity for the hydrosilylation of olefins by triethoxysilane, was investi gated

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A NOVEL FREE RADICAL REARRANGEMENT

Shi Zhi CHEN, Ming GUO, Kai Rong CUI, and Liang HUANG

中国化学快报. 1992, 3(04): 257-258.

摘要 ( )

可视化

The reaction of benzyloxyethanol with carbon tetrabromide was investigated, and a possible mechanism was proposed

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A STUDY OF THE REACTIONS OF BENZYL ETHERS WITH DIBROMOCARBENE

Qi Jun LIN, Miao ZHANG

中国化学快报. 1992, 3(04): 259-262.

摘要 ( )

可视化

Using potassium carbonate as base and a polyethylene glycol with an average molecular weight of 600 (PGE600) as phase transfer catalyst, reaction of benzyl ethers with dibromocarbene leads to benzylic C-H bond insertion products, aromatic aldehydes are also formed as one of the products

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EFFECT OF ELECTRON DONORS ON THE SELECTIVE HYDROGENATION OF DIENE TO MONOENE OVER HETEROGENIZED Pd CATALYST

Tong Shen ZHANC, Yun XU, Shi jian LIAO

中国化学快报. 1992, 3(04): 263-264.

摘要 ( )

可视化

In the selective hydrogenation of diene (or alkyne) using heterogenized homogeneous catalyst, the high selectivity of monoene formation only appears in a very short time interval. The addition of suitable electron donors can decrease or even cease the monoene hydrogenation and thereby keep the high monoene selectivity after reaching its maximum

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ELECTROCARBOXYLATION OF ORGANIC COMPOUNDS WITH CARBON DIOXIDE CATALYZED BY METALLOPORPHYRINS(Ⅱ)--ELECTROSYNTHESIS OF SOME ORGANIC COMPOUNDS WITH CO₂ CATALYZED BY CoTPP

Guo Dong ZHENG, Qing Da AN, Yu Wen LIU, Ying Jun WANG, Xi Zhang CAO

中国化学快报. 1992, 3(04): 265-266.

摘要 ( )

可视化

The catalyzation of CoTPP for electrocarboxylation of alkyl halides, alkenes and ketones with CO₂ are studied. The electrocarboxylation of these organic compounds with CO₂ in the presenec of catalyst can occur at more positive potential than that of no catalyst. The products of electrocarboxylation were identified by UV, IR and GC-MS. The electrocarboxylation mechanisms of different organic compounds are discussed

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OXIDATION OF ALKYLBENZENE CATALYZED BY RUTHENIUM-POLYMERBOUND 2,2’-BIPYRIDINE COMPLEXES

Zi Qiang LEI, Yun Pu WANG

中国化学快报. 1992, 3(04): 267-268.

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可视化

Oxidation of ethylbenzene, n-propylbcnzene and n-butylbenzene gives the corresponding ketones and alcohols in good yields by organic polymer supported low-valent Ru (Ⅱ) complexes under 1 atm. of air or oxygen at 100℃ in the absence of solvent. The calalytic selectivity to total ketone and alcohol ranged from 98.7％ to 100％. The polymer complex polymer-bipy-Ru-bipy (bipy=2, 2’-bipyridine) is very stable and can be reused for 5 times (each for 5h) without appreciable change in catalytic activity

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CHEMISTRY OF DENUDATINE Ⅲ. REARRANGEMENT OF DENUDATINE

Feng Peng WANG, Jian Zhong WANG, Rong ZHANG

中国化学快报. 1992, 3(04): 269-270.

摘要 ( )

可视化

Treatment of denudatine 1 with 10％ HCl soln. at 30-40℃ for 1 day leads to another rearrangement product 3 along with a pair of epimers 2A and 2B. Upon adding a little EtOH in the reaction solution, only a pair of epimers 4A and 4B were obtained along with the unchanged starting material

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CONFORMATIONAL ANALYSIS ON ANTICHOLINERGIC DRUG (Ⅰ) MOLECULAR MECHANICS MMPM CALCULATION OF ATROPINE AND OTHER ALKALOIDS IN THE BELLADONNA PLANT

Wen Xiang HU, Liu Hong YUN, Shu Sen LI

中国化学快报. 1992, 3(04): 271-274.

摘要 ( )

可视化

Alkaloids of balladonna plant were studied by molecular mechanics MMPM calculation. The results showed that the ideal conformation was quite different from the structure found in the crystals of the alkaloids in belladonna plant. The intramolecular hydrogen bond was present between the hydroxy group and carbonyl oxygen atom in the ideal conformation for these alkaloids. The origin of asymmetrical molecules in nature obeys the lowest energy principle. This may be a reason why only S-(-) not R-(+)-isomer, only hyoscyamine not pseudotropine were found to be present in natural belladonna plant, The model of four recognition sites between anticholinergic drug-receptor interaction in mydriasis was suggested, in which the hydroxy group with 8~9 A distanced from nitrogen atom is possibly necessary for maximum mydriasis activity

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EMPIRICAL RULES FOR ³¹p-NMR OF ORGANOPHOSPHORUS COMPOUNDS

Wen Xiang HU, Shu Sen LI, Cheng Ye YUAN

中国化学快报. 1992, 3(04): 275-278.

摘要 ( )

可视化

The substituent effects on ³¹P-NMR chemical shifts, are determined by five empirical rules. The proposed rules are based on that the shielding (upfield shift) of resonance nucleus is governed by the spherical symmetry of the electron cloud

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LOW-VALENT TITANIUM INDUCED REDUCTIVE COUPLING REACTION OF AROMATIC α-HYDROXY KETONES

Zi Jie HOU, Li dun LIU, Yu Lin LI

中国化学快报. 1992, 3(04): 279-280.

摘要 ( )

可视化

Treatment of aromatic α-hydroxy ketones with an activated Ti(O) reagent, prepared by reduction of TiCl₃ with a Zn-Cu couple, effects an intermolecular coupling reaction leading to the (Z)-1, 2, 3, 4-tetrarvl-2-butene and (E, E)-1, 2, 3, 4,-tetraryl-1, 3-butadiene. A possible reaction mechanism was proposed

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TRITERPENES AND OTHER CONSTITUENTS FROM CYNOMORIUM SONGARICUM

Chao Mei MA, Shi Shan JIA, Yi Wen ZHANG, Tao SUN

中国化学快报. 1992, 3(04): 281-282.

摘要 ( )

可视化

From the whole plant of Cynomorium songaricum a new triterpene was isolated together with acetyl ursolic acid, ursolic acid, β-sitosterol palmitate, β-sitosterol, palmitic acid and β-sitosterol glucoside. The structure of the new compound was elucidated as ursa-12-ene-28-oic acid, 3β-propanedioic acid monoester (cynoterpene, 1)

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C₁₄ ACETYLENES FROM ARTEMISIA FEDDEI¹

Ren Xiang TAN, Zhong Jian JIA, Yu ZHAO, Shi Lan FENG

中国化学快报. 1992, 3(04): 283-284.

摘要 ( )

可视化

The phytochcmical investigation of the aerial parts of Artemisia feddei Levl. et Vant. gave a pair of novel C₁₄ acetylenic spiroketals

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TWO NEW STEROIDAI, SAPDNINS FROM THE BULBS OF ALLIUM MACROSTEMON BUNGE

Jun Peng PENG, Yan WU, Xin Sheng YAO, Toru OKUYAMA, Takao NARUI

中国化学快报. 1992, 3(04): 285-286.

摘要 ( )

可视化

Two new steroidal saponins, named macrostemonoside A and D. were isolated from the bhlbus of Allium macrostemon Bunge (Liliaceae), and their strurtures were established by spectroscopic analysis and chemical evidences

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STUDY ON THE CHEMICAL CONSTITUENTS OF BIDENS BIPINNATA A NEW POLYACETYLENE GLYCOSIDE

Jian Ping WAN, Hisashi ISHII, Takashi HARAYAMA, Yu Min GAO, Qiu Sha HUI, Hui Yun ZHANG, Jiang Xin CHEN

中国化学快报. 1992, 3(04): 287-288.

摘要 ( )

可视化

A new naturally occurring compound 1-polyacetylene glycoside has been isolated form the n-butanol soluble fraction of the leaves of Bidens bipinnata. The chemical structure of 1 was shown to be 3E, 11E-Diethenylene 5. 7. 9-triacetylene, 1, 13-tridecanglycol-2-O-β-D-glycoside named bipinnatpolyacetyloside according to spectral analyses of UV. IR. FDMS, ¹H-NMR, ^H-^H COSY, ¹³C-NMR and DEPT

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A NEW TRITERPENE SAPONIN FROM THE ROOT OF ARALIA SPINIFOLIA

shi shan YU, De Quan YU, Xiao Tian LIANG

中国化学快报. 1992, 3(04): 289-290.

摘要 ( )

可视化

A new triterpene saponin; 3-0-{β-D-xylopyranosyl(1-2) [β-D-glucuronopyranosyl(1-3)]}β-D-glucopyranosyl-oleanolic acid (Ⅲ) along with two known triterpene saponins has been isolated from the root of Aralia spinifolia. Their structures have been elucidated by spectral analysis and chemical methods

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STUDY ON STRUCTURE AND BOND CHARACTER OF SAMARIUM COMPLEX WITH β-ALANINE

Qing Bo HENG, Jian Xue, LIU Chun Ji NIU, Jia Zuan NI

中国化学快报. 1992, 3(04): 291-292.

摘要 ( )

可视化

The structure and properties of Sm complex with β-alanine have been studied by quantum chemical calculation, The theoretical result agree well with the experimental ones obtained in studies on rare earth complexes with amino acids

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LANTHANIDE COMPLEXES OF ACETYLACETONATE-MESO-5-(4-HYDROXY)-10,15,20-TRI-METHOXYPHENYI PORPHYRIN

Guo Fa LIU, Xi Zhang CAO

中国化学快报. 1992, 3(04): 293-294.

摘要 ( )

可视化

Lanthanide complexes of acetylacetonate-meso-5-(4-hydroxy)-10,15,20,trimethoxyphenylporphyrin, Ln(HMpp)acac (Ln=Dy, Er, H=hydroxy group, M=methoxy group, hacac=acetylacetone, pp=phenylporphyrin) have been prepared and characterized on the basis of elemental analyses, infrared spectra, and ultra-violet visible spectra

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NMR AND INFRARED SPECTROSCOPIC STUDY ON THE INTERACTION OF RARE EARTH WITH L-METHIONIHE

Chun Ji NIU, Feng GAO, Qing Bo MENG, Jia Zuan NI

中国化学快报. 1992, 3(04): 295-298.

摘要 ( )

可视化

Five solid complexes of rare earth with L-methionine have been prepared. The interaction of rare earth with the ligand has been studied by NMR and IR spectroscopy

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SPECTROFLUORIMETRIC DETERMINATION OF GERMANIUM WITH MORIN IN WATER AND HEALTH DRINK

Yan Jun CHEN, Guo Qiang SHANGGUAN, Ning WANG, Ya Min CHEN, Hong Wei WANG, Shu Gong ZHANG

中国化学快报. 1992, 3(04): 299-300.

摘要 ( )

可视化

A highly sensitive and fairly selective spectrofluorimetric method has been developed for the determination of germanium with morin in tap water and health drink. The fluorescent reaction and optimal conditions of germanium with morin in phosphoric acid medium were studied. The detection limits of germanium in tap water and health drink were found to be 0.2 and 0.7μd/L respectively

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STUDY ON TRANSPORT AND SEPARATION OF MO(Ⅵ) ION BY USING ELM OF TOA-SPAN 80-OXYLENE

Ke An LI, Quan Min LI, Chang Ying ZOU, Shen Yang TONG

中国化学快报. 1992, 3(04): 301-302.

摘要 ( )

可视化

A new ELM was prepared for the study on transport of Mo(Ⅵ) ion. Under the experimental conditions, Mo(Ⅵ) can be transported completely and separated from the co-lons.The emulsion liquid membrane(ELM) with Tri-n-octylamine(TOA) as a carrie^[1-3] used for the transport of Mo(Ⅵ) ions and its separation from some cations have been reported in this paper. The transport percentage of Mo(Ⅵ) ion through ELM in 5 min corresponds to that of the literature^[3] in 165 min

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IN SITU X-RAY DIFFRACTION CHARACTERIZATION OF SILVER/SOLUTION INTERFACES

Chang Guo CHEN, Ji Hong YI, Zong Qing HUANG

中国化学快报. 1992, 3(04): 303-304.

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可视化

In situ x-ray diffraction electrochemical method is used to study the activation of silver electrode in KCl solution and UPD lead on silver electrode surface. We found that the activation makes the silver crystal thicker in (111), and the arrangement of water molecules on the silver electrode surface with UPD lead is partially ordered

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ELECTROCHEMICAL AND SPECTROELECTROCHEMICAL CHARACTERIZATION OF p-TRICYANOETHENYL-N,N-DIMETHYL ANILINE

Dong ZHANG, Yue Shun JIANG, De Jun WANG, Tie Jin LI, Bao Wen ZHANG

中国化学快报. 1992, 3(04): 305-306.

摘要 ( )

可视化

The redox behaviours of a donor-acceptor model compound. p-tricyano-ethenyl-N, N-dimethyl aniline was investigated by electrochemical and spectroelectrochemical methods. The results indicate that charge transfer between the donor(amino) and the acceptor(cyanoethenyl) groups takes place in the process of oxidation of this compound

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SYNTHESIS AND POLYMERIZATION KINETICS OF 1-BROMOMETHYL-7,7-DIMETHYLBICYCLO[2.2.1]HEPT-2-YL ACRYLATE

Xin Ru JIA, Ming Qian LI, Ji Ping SHAO, Shuo Jian JIANG

中国化学快报. 1992, 3(04): 307-310.

摘要 ( )

可视化

Starting from camphene and NBS the 1-bromomethyl-7, 7-dimethylblcyclo-[2.2.1]hept-2-yl acrylate [BMCHA] has been synthesized by two steps. The polymerization kinetics equation of this monomer was obtained as follows:Rp=K[BPO]^0.50[BMCHA]^1.0 and the apparent activation energy of the polymerization was evaluated to be 82.96KJ/mol

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THE APPLICATION OF MICROELECTRODE TO THE STUDY OF MULTISTEP ELECTRODE PROCESSES UNDER STEADY STATE CONDITIONS PART Ⅱ ECEAND DISP1 MECHANISMS

Qian Kun ZHUANG, Hong Yuan CHEN

中国化学快报. 1992, 3(04): 311-314.

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可视化

Under steady-state conditions, using the concept of steady-state reaction layer, the general currents of ECE and DISP1 reactions at microdisk electrode are derived. From these equations, some kinetic and electrode reaction parameters can be obtained

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MECHANISM OF ELECTROCHEMILUMINESCENCE OF THE NEW REAGENT 6-(2-HYDROXY-DIETHYLAMINOPHENYLAZO)-2, 3-DIHYDRO-1, 4-PHTHALAZINE-1, 4-DIONE CATALYZED BY SILVER (Ⅰ)

Jing Ru AN, Jin Ming LIN

中国化学快报. 1992, 3(04): 315-318.

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可视化

The electrochemi luminescence of a new reagent 6-<2-hydroxy-4-diethylaminophenylazo>-2, 3-dihydro-1, 4-phthatazine-1, 4-dione in basic aqueous solution was studied. Trace amount of silver(I) showed significant effect on the efficiency of light emission of HDEA during a positive trigonometrical wave pulse was exerted on the electrodes In the present paper, the ecl spectra of HDEA have been measured. λ_max is 410 nm. The reaction of HDEA chemiluminescence and the circular voltammetry, ultraviolet-visible spectrometry for the system have been investigated. The possible mechanism of the ecl of HDEA-KCL-KOH-Ag(I) system has been proposed

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REDUCED EXTENT METHOD FOR THERMOKINETICS Ⅰ. MATHEMATICAL MODELS FOR KINETICS OF REVERSIBLE REACTIONS

Jing song LIU, Xian Cheng ZENG, An Ming TIAN, Yu DENG

中国化学快报. 1992, 3(04): 319-322.

摘要 ( )

可视化

Some new mathematical models of reversible reaction kinetics have been suggested, and a reduced extent method for studies of thermokinetics of reversible reactions has been proposed

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SOLID-STATE ELECTROCHROMIC DISPLAY

Sheng Shui ZHANG, Wei Hua CHOU, Xin Ping QIU, Qing Guo LIU, Lei Ling YANG, Bao Quan XING

中国化学快报. 1992, 3(04): 323-324.

摘要 ( )

可视化

A novel electrochromic display composed of polymeric solid electrolyte and ferroin electroactive species has been assembled, which presents a reversible variation of the color between light blue and red when a potential of 0.98 and 0.75 V is applied respectively. The results indicate that the response speed is increased by lowering the concentration of ferroin without decreasing color contrast

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THE STUDY ON THE SYNTHESES OF THREE NEW MICROPOROUS ALUMINOPHOSPHATES BY USING ETHYLENEDIAMINE AS TEMPLATE

Long YU, Wen Qin PANG

中国化学快报. 1992, 3(04): 325-328.

摘要 ( )

可视化

Using ethylenediamine as template, we have hydrothermally synthesized three new microporous aluminophosphate crystals which were named AlPO₄-CJ₃, AlPO₄-CJ₆, AlPO₄-CJ₇, and characterized by means of X-ray powder diffraction, infrared spectroscopy, SEM, ¹³C solid state NMR and TG-DTA techniques

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本期目录

1992年, 第3卷, 第04期　刊出日期：1992-04-20

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本期目录

1992年, 第3卷, 第04期 刊出日期：1992-04-20

1992年, 第3卷, 第04期　刊出日期：1992-04-20