中国化学快报

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ENANTIOSELECTIVE TOTAL SYNTHESIS OF 6R-(-)-MASSOIALACTONE

Li Bing YU, Zhi Qin WANG

中国化学快报. 1993, 4(01): 1-2.

摘要 ( )

可视化

4'R, Z, 2-(4'-hydroxy-2'-nonenyl)-1,3-dioxane 2 which is an Intermediate in the synthesis of chiral δ-lactones,has been syntheslzedfrom dlepoxide 3. Enantioselective total synthesis of 6R-(-)-massoialactone 1 has been achieved from 2 through 4 steps

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TOTAL SYNTHESIS OF N.N-BIS (β-CHLORO-β,β-DIDEUTERO-E'THYL)-N',N"-DI(CARBOETHOXYMETHYL)-PHOSPHOROTRIAMIDE

Jing Hua YANG, Lan XIE, De Pang HOU

中国化学快报. 1993, 4(01): 3-4.

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可视化

The total synthesis of the labeled componed from im mediacetic acid through esterifying, reducing with LiAID₄ as a labeling agent, chlerinating and phosphorylating reactions was first reported in this paper.

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STUDIES ON THE SYNTHESIS AND BIOLOGICAL ACTIVITY OF 1-ARYLOXYACETYL-4-AROYL THIOSEMICARBAZIDE DERIVATIVES

Ji Chou CHEN, Tai Bao WEI, Xiu Chun WANG, Su You YANG

中国化学快报. 1993, 4(01): 5-8.

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可视化

A series of new 1-aryloxyacetyl-4-aroylthiosemicarbazides were synthesized by means of solid-liguid phase transfer catalysis. The promoting effects of these new compounds on wheat growth were observed.

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THE REACTION OF ETHYL AROYLACETATES AND o-PHENYLENEDIAMINE

Mei xiang WANG, Zhi Tang HUANG

中国化学快报. 1993, 4(01): 9-12.

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可视化

Instead of 2-(aroylmethylene)benzimidazolines 3 or 2-(aroyl-methyl)benzimidazoles 4, 4-aryl-2, 3-dihydro-1H-1, 5-benzodiazepin-2-ones 5 were obtained exclusively from the reaction of o-phenylenediamine (1) and ethyl aroylacetates 2 in the presence of a catalytic amount of potassium hydroxide.

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A CONVENIENT APPROACH OF DIYNE ALCOHOL AND TRIYNE ALCOHOL BY COPPER (Ⅰ) AND PHASE TRANSFER CONDITION CATALYZED PROPARGYLATION OF PROPARGYL ALCOHOL

liang Fu HUANG, Bao Ming XU, Shu Xiang SHAN, Xue You ZHU

中国化学快报. 1993, 4(01): 13-16.

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The copper(Ⅰ) catalyzed coupling reaction of substituted propargyl tosylate with propargyl alcohol proceeds smoothly at room temperature to give 2,5-diynyl alcohol under solid-liquid phase transfer condition. A number of 2,5-diynyl alcohols and 2,5,8-triynyl alcohols were synthesized in this way in good yield.

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THE INTRAMOLECULAR COUPLING REACTION OF 2-NITROETHYL-1,3-DICARBONYL COMPOUND INDUCED BY LOW-VALENT TITANIUM

Ju GAO, Jian Ping JIANG, Jian Xie CHEN, Su YUAN, Xiao Man ZHANG, Wei Xing CHEN

中国化学快报. 1993, 4(01): 17-18.

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Low-valent titanium reagent prepared in situ from TiCl⁴and Zn was employed to induce the intramolecular coupling of nitro group with carbonyl group to give substituted hydroxyl pyrrolines, pyrroles and lactam in good yields.

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SELF-ACTIVATING OF N-PHOSPHOAMINO ACIDS TO THE ESTER FORMATION

Yan Mei LI, Yu Fen ZHAO

中国化学快报. 1993, 4(01): 19-20.

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可视化

The introduction of phosphoryi group facilitates the esterification of an amino acid. The corresponding products were isolated and determined.

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OXIDATION OF ALKYLBENZENES CATALYZED BY IRON( Ⅱ,Ⅲ)-1,10-PHENANTHROLINE AND 2, 2'-BIPYRIDINE COMPLEXES

Zi Qiang LEI, Yun Pu WANG

中国化学快报. 1993, 4(01): 21-22.

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可视化

Oxidation of alkybenzenes PhCH₂R(R=H, CH₃, C₂H₅ and n-C₃H₇ under 1 atm. of O₂ or air catalyzed by iron(Ⅱ, Ⅲ)-2,2'-bipyridine and 1,10-phenanthroline complexes, affords the aryl-substituted ketones and alcohols with the conversion of 15.00%~34.58% containing of 97.60%~99.80% ketones and alcohols. The turnover numbers of these catalysts are over 3500 mol-cat. -¹for 3.5 h.

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STRUCTURES OF HAINANENSINE DERIVATIVES

Da Li YIN, Ying Hong WANG, Ji Yu GUO, Xiao Tian LIANG

中国化学快报. 1993, 4(01): 23-26.

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可视化

The structures of hainanensine derivatives 3, 4A, 4B and 6 have been established by chemical correlation, spectral analysis and X-ray diffraction.

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STEREOCHEMISTRY OF POLYMERIZATION OF METHYL METHACRYLATE IN THE PRESENE OF CHIRAL LIGANDS

Bin YU, Xue Chun LIN, Meng Xian DING, Hui Zhen HU, Fo Song WANG

中国化学快报. 1993, 4(01): 27-30.

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可视化

Methyl methacrylate was anionically polymerized in the presence of chiral ligands, e.g. (+)-DDB and (-)-Sp. The polymers thus formed were optically inactive due to the instability of the helical chain for the less bulky ester group. Isotactic poly(methyl methacrylate) was given when (+)-DDB was used, whereas, a syndiotactic polymer was formed in the presence of (-)-Sp. Accordingly, two different propagation mechanisms were postulated.

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THE STRUCTURE OF A NEW LIGNAN DIOL

Hong Jie WANG, Yan Yong CHEN, Xiao Tian LIANG

中国化学快报. 1993, 4(01): 31-32.

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可视化

A lignan diol (1) was isolated from Schisandra rubriflora Rhed et Wils. It is racemic, with RS, RS, RS, SR configurations for the four consecutive asymmetric centers as shown.

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TWO NEW CINNAMIC ACID DERIVATIVES FROM MAGNOLIA BIONDII PAMP

GuiQiu HAN, Qiu Li HUANG

中国化学快报. 1993, 4(01): 33-34.

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可视化

Two new cinnamic acid derivatives named biondinin C and biondinin D were isolated from the flower buds of Magnolia biondii pamp. The structures were elucidated by the spectral data including ¹H, ¹H COSY, ¹H-¹³C COSY spectra.

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NEW COUMARINS FROM PEUCEDANUM PRAERUPTORUM

Ling Yi KONG, Yue Hu PEI, Xian LI, Ting Ru ZHU

中国化学快报. 1993, 4(01): 35-36.

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可视化

Four new coumarins named qianhucoumarins A, B, C, D have been isolated from traditional Chinese medicine-the root of Peucedanum praeruptorum. Their structures were elucidated by chemical evidences and spectral analysis.

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NEW COMPOUNDS FROM PEUCEDANUM PRAERUPTORUM

Ling Yi KONG Yue Hu PEI Xian LI, Ting Ru ZHU

中国化学快报. 1993, 4(01): 37-38.

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可视化

Four new compounds named qianhucoumarins E, F, G and baihuaqianhuoside have been isolated from the root of Peucedanum praeruptorum. Their structures were elucidated by chemical evidences and spectral analysis.

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A NEW DITERPENE GLYCOSIDE FRON ASTR AGERATOTDES TURCZ

Dong Liang CHENG, Xiao Ping CAO, Han Xun, WEI Li YANG

中国化学快报. 1993, 4(01): 39-40.

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可视化

From aerial part of Aster ageratoides, a new natural diterpene glucoside was isolated, Its structure was established by means of spectral and chemical methods as 16β-hydroxy-17-acetoxy-(-)-kauran-19-oic acid-β-D-glucopyranesyl ester.

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SYNTHESIS AND CATALYSTIC BEHAVIOR OF A HEW PHASE-TRANSFER CATALYST SUPPORTEI ON SILICA GEL

Ru Hong KANG, Jian Lu ZHAO, Hui Lan CHEN, Wen Juan QIE, Wei Zhan JI

中国化学快报. 1993, 4(01): 41-44.

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可视化

A new catalyst with quaternary ammonium cation activated polyether chains immobilized on silica gel was applied to promote the reations of KI with n-C₄H₉-Br and KSCH with n-C₄H₉Br. The new catalyst showed much significant activity over other PEG functionalized silica gel.

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THE HYDROXYLATON OF INACTIVE HYDROCARBONS WITH ACTIVE CARBON SUPPORTED METALLOPORPHYRINS

Wei Zhong ZHENG, Xian Yuan WANG, Guang Nian LI

中国化学快报. 1993, 4(01): 45-46.

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可视化

A supported Mn-porphyrin catalyst was prepared by adsorption of Mn-porphyrin on active carbon, and found to be efficient for the hydroxylation of hexane with hydrogen peroxide.

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SYNTHESIS AND CHARACTERIZATION OF COMPLEXES OF TRANSITION METAL WITH PBDETA, A NEW POLYDENTATE LIGAND

Lu Qin YANG, Shi Ping YAN, Geng Lin WANG

中国化学快报. 1993, 4(01): 47-50.

摘要 ( )

可视化

The synthesis and characterization are reported for a series of bi- and trinuclear complexes of the first transition metal ions with PBDETA, the newly synthesized polydentate ligand. The electron transition energy in binuclear compound is stronger than that in trinuclear. There is a weak antiferromagnetic exchange interaction in tricopper and trimanganese.

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AN EASY ROUTE TO SYNTHESIZE COPPER(I) COMPLEXES Cu₂(Ph₂PCH₂PPh₂)₂(NO₈)₂ AND Cu(Ph₂PCH₂CH₂PPh₂)(NO₈). THEIR CHARACTERIZATION AND ELECTROCHEMISTRY

Zhen Feng XI, Dou Man JIN

中国化学快报. 1993, 4(01): 51-54.

摘要 ( )

可视化

Binuclear Cu(Ⅰ) complex [Cu(dppm)(NO₃)]₂ (dppm=Ph₂PCH₂PPh₂) and mononuclear Cu(Ⅰ) complex [Cu(dppe)(NO₃)] (dppe=Ph₂PCH₂CH₂PPh₂) have been synthesized by the ligand-reduction reaction of cupric nitrate with dppm and dppe in methanol and characterized by means of ICP, elemental analyses, molecular weight determination, TG,³¹P-NMR, IR and Raman spectra; their electronic conductivities and CV waves have also been measured. Results show that dppm coordinates to the Cu(Ⅰ) atoms as a bridging bidentate ligand and dppe as a chelating bidentate ligand, (NO₃)_-1 behaves as a chelating bidentate ligand in both of the newly prepared complexes.

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PREPARATION, CHARACTERIZATION AND ELECTROCHEMISTRY OF BINUCLEAR COPPER(Ⅰ) COMPLEXES Cu₂(dppm)Cl₂ AND Cu₂(dppe)Cl₂

Zhen Feng XI, Dou Man JIN, Jin Chun WU

中国化学快报. 1993, 4(01): 55-58.

摘要 ( )

可视化

Two binuclear copper(I) complexes with novel structures and novel bonding,Cu₂(Ph₂PCH₂PPh₂)Cl₂ (Ph₂PCH₂PPh₂=dppm) and Cu₂(Ph₂P-CH₂CH₂PPh₂)Cl₂ (Ph₂PCH₂CH₂PPh₂=dppe), were prepared and characterized through elemental analyses, ICP, IR(4000-200 cm^-1, CsI disc.), ³¹P-NMR spectra. Their electronic conductivities, oxidation and reduction potentials were measured. Preliminary studies show that both of the two complexes have chlorobridging and phosphorus-bridging structures.

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SYNTHESIS, MAGNETIC PROPERTY AND X-RAY CRYSTAL STUCTURE OF MIXED VALENT COBALT COMPLEX SALT [Co^Ⅲ Cl₂(py)₄][Co^Ⅱ Cl₃(py)]

Hao XU, Jin Yu LI, Zhong Zhi WU, Jian Zhong ZOU, Zheng XU, Xiao Zeng YOU, Zheng Chao DONG

中国化学快报. 1993, 4(01): 59-60.

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可视化

Complex salt Co₂Cl₅(py)₅ (py=pyridine) was obtained by the reaction of CoCl₂·6H₂O with Bu₄NMnO₄ in pyridine in the presence of benzoic acid. It is monoclinic and crystallizes in space group P2₁/n, fw=690.64, a=28.652(5), b=14.108(4), c=7.424(3)Å;β=90.09(1); V=3001(2)Å³; Z=4, Dc=1.53g/cm³. Final R factor is 0.041. The structure consists of a discrete cation [Co^ⅢCl₂(py)₄]⁺ and an anion [Co^Ⅱ Cl₃(py)]^-. The Co^Ⅲ ion is coordinated by two Cl^- and four pyridine nitrogen atoms to form an octahedral geometry, and Co^Ⅱ is coordinated by three Cl^- and one pyridine nitrogen atom to form the apices of a tetrahedron. The variable-temperature magnetic susceptility measurement shows no magnet-exchange interaction between Co^Ⅲ and Co^Ⅱ ions.

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A NOVEL THIOPHENE-DERIVED N₂O₂ MACROCYCLEAND ITS Ag(Ⅰ) COMPLEX: SYNTHESIS AND CHARACTERIZATION

Fu Xin XIE, Guang YANG, Shi Sheng NI

中国化学快报. 1993, 4(01): 61-62.

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A novel macrocycle containing thiophene (L) was prepared first by the interaction of 2,5-bis-(chloromethyl)-thiophene (A) and salicylaldehyde to give 2, 5-bis-(2-formylphenoxymethyl)-thiophene (B), and then by the nontemplate cyclocondensation of 1,3-diaminopropane with (B) followed by a "onepot" reduction without isolation of the diimine intermediate. The corresponding silver complex, AgLClO₄, was also prepared. The macrocycle was characterized by IR, elemental analysis, MS and ¹HNMR

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STUDIES ON THE LB FILM OF 2-HEPTADECYL IMIDAZOLECOORDINATING METAL IONS

Min MA, Feng Ling LIU, Ming Li SHI, Qing Ping DAI

中国化学快报. 1993, 4(01): 63-66.

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可视化

The surface pressure—area isotherms(π—A curves) of 2—heptadecyl imidazole (HIM) Langmuir films at the subphases of deionized water and solutions containing metal ions such as Cu²⁺, Cd²⁺, Ca²⁺, Co²⁺, Ag⁺ etc. have been studied. It was formed Langmuir film at the subphase containing Cu²⁺ or Ag⁺ ions and its LB film was successfully deposited. The molecular and ionic total energies (E) and stabil. ity energies (△E) forming complexes were computed by CNDO/2 method. The computational results agreed with the experiments.

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THE DIFFUSION OF m-XYLENE ON MODIFIED ZnZSM-5 AROMATIZATION CATALYST BEFORE AND AFTER COKING

Wen Gui GUO, Jian Hui WU, Su Qin ZHAO, Rong Hui WANG, Juan LIANG

中国化学快报. 1993, 4(01): 67-68.

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可视化

The effect of coking amount for diffusion rate of m—xylene in a pore of the modified ZnZSM—5 aromatization catalyst has been studied.

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ANALYSIS OF SYMMETRY OF C₆₀) ADSORBED ON THE SILVER MIRROR BY SERS SPECTRUM

Jun HU, Zhi San XU, Shen Grong SHENG, Yun'e ZENG, Xiao Hua WANG, Shu Nian CHENG, Ling ZHU, Gui Hua LI

中国化学快报. 1993, 4(01): 69-70.

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可视化

The SERS spectrum of C₆₀ was obtained by using silver mirror. From the SERS spectrum of C₆₀ and the IR spectrum of C₆₀, we proposed that C₆₀ adsorbed on the silver mirror adopts a more ellipsoidal shape.

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1-(4-ANTIPYRINYL)-3-(2, 4-DINITROPHENYL)-TRIAZENE AND ITS COLOUR REACTION WITH CADMIUM

Bin XU, Hong Yin ZHOU, Shu Yin TONG

中国化学快报. 1993, 4(01): 71-72.

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可视化

A new reagent,1(4 antipyriny1) 3 (2,4-dinitropheny1)triazene(APDNBT), was synthesized in this lab and its analytical properties and its colour reaction with cadmium were studied.

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AB INITIO CALCULATION ON CAPTODATIVE EFFECT OF THE FREE RADICAL OF 2,2,2-TRIFLUOROETHYLAMINE

Wei Xing LI, Xun Jun ZHOU Nian Ci WU, Guo Qiang CAI

中国化学快报. 1993, 4(01): 73-74.

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可视化

This letter presents ab initio calculation of Captodative effect on 2,2,2-trifluoroethylamine free radical on STO-3G level. The △Ecd is -50. 15 kJ/mol, which means that this radical is of extra stabilization energy.

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THEORETICAL STUDY ON THE EXCITED STATES AND STABILITIES OF B₃, B₃^- AND B₃⁺

Ze Xing CAO, An Min TIAN, Guo Ming LIANG, Guo Sen YAN

中国化学快报. 1993, 4(01): 75-78.

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可视化

The geometries and vibrational frequencies of the ground and low-lying excited states for B₃, B₃^- and B₃⁺ are determined with the energy gradient method using the polarized double-zeta(6-31G*) basis set. The stabilities for the states of B₃,B₃^- and B₃⁺ have been investigated based on the vibrational analysis. The correlation energy obtained for each state is considered with the configuration interaction (CISD+Q) technique. B₃ and B₃⁺ have stable equilateral triangle geometry, while B₃^- has stable equilateral triangle, isosceles triangle and linear geometries. The Jahn-Teller distortion for a ³E' state of B₃^- in D_3h symmetry is also discussed.

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THE PREPARATION OF TITANIUM OXIDE OVERLAYER ON Fe(110) FOR SURFACE SCIENCE STUDIES

Jun Zhuo DENG, Hong Li WANG

中国化学快报. 1993, 4(01): 79-82.

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可视化

The preparation, characterization and properties of titania overlayer on Fe(110) substrate is hereby reported. The TiO_X overlayer was found to form in a layer-by-layer mode with a suboxide of titanium in the form of TiO migrating into the Fe substrate and Fe migrating into the deposited layer of TiO_X simultaneously during the deposition.

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PHOTORESPONSE ON 1Cr18Ni9Ti STAINLESS STEEL IN PASSIVE AND TRANSPASSIVE REGIONS

Yong Jun JI, Mai Zhi YANG Sheng, Min CAI

中国化学快报. 1993, 4(01): 83-86.

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可视化

Photocurrent transients on stainless steel in the passive and transpassive regions in 0.5M H₂SO₄ were obtained using weak signal detecting technique. In passive region, the photoresponse an stainless steel exhibits n-type semiconductor characteristics. While changing from the passive to transpassive region, a n-p type transformation happens. This phenomenon is possibly caused by the change of the composition of passive film of stainless steel.

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CORROSION INHIBITION OF STEARIC ACID LANGMUIR-BLODGETT MONOLAYERS ON IRON

Wei XING, Yi Bin SHAN, Du GUO, Tian Hong LU, Shi Ouan XI

中国化学快报. 1993, 4(01): 87-88.

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可视化

The Langmuir-Blodgett (LB) technique was used for the first time to study inhibition mechanism. Stearic acid Langmuir-Blodgett (SALB) monolayers showed a good inhibition effect on iron corrosion in neutral environment and the inhibition is mainly based on the blocking effect.

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STUDY ON THE FORMATION OF BLACK PATINA ON BRONZE MIRRORS INDUCED BY HUMIC ACID

Zhao Zeng MA, Lian Ji JIN

中国化学快报. 1993, 4(01): 89-92.

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可视化

The black patina on some ancient Chinese bronze mirrors is known as " Black Lacquer Antique "(BLA) or "Hei-qi-qu", which looks jet-black and shiny. BLA's were corroded slowly, one of them was about 10^-4mm per year in the soil. Many scholars have studied the composition and structure of BLA^(1)(2)(3)(4), but the formation remains obscure. In this paper the formation of BLA on the surface of bronze mirror samples induced by humic acids under different conditions has been studied.

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A SCF-SOCI STUDY ON THE LOW-LYING STATES OF H₃⁺

Jie YANG, Guo Sen YAN, An Min TIAN, Au Chin TANG, Qian Shu LI

中国化学快报. 1993, 4(01): 93-94.

摘要 ( )

可视化

The ground state and three low-lying states of the H₃⁺ are determined by SOCI(Second Order Configuration Interaction) calculations. The results indicate that the ³Σ_u⁺ state of H₃⁺ is a bound state, but ¹A₁ and ³A₁ states are not stable, each of them will dissociate into H₂⁺ and H atom. The SOCI energy -1.1144065au at an equidistant nuclear separation of 1.296A is in good agreement with the lowest value reported so far^[1].

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1993年, 第4卷, 第01期　刊出日期：1993-01-20

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1993年, 第4卷, 第01期 刊出日期：1993-01-20

1993年, 第4卷, 第01期　刊出日期：1993-01-20