中国化学快报

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Oxidation of Hecogenin and Diosgenin Derivatives with Dimethyldioxirane

Bao Kun ZHU, Hong Bin ZHANG, Yu Shun ZHANG, Hui Min ZHONG, Jian Ping LIU

中国化学快报. 2005, 16(02): 143-146.

摘要 ( )

可视化

Diacetyl derivative of hecogenin 1 was oxidized to unsaturated ketone 5 via allylic alcohol 3 when it reacted with dimethyldioxirane (DMDO). The structure of 3 was confimed by X-ray crystal analysis and the highly regioselectivity of DMDO to different olefin bonds was also observed when diosgenin derivative 6 was treated with DMDO.

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Ortho-Hydroxylation of Phenol by Tyrosinase Model Compounds

Dai Rong YUAN, Jia Ming YAN, Cheng Zhi YU, Ru Gang XIE

中国化学快报. 2005, 16(02): 147-150.

摘要 ( )

可视化

A series of tyrosinase model ligands and complexes containing polyimidazoles were prepared. 2, 4-Di-tert-butyl-phenol was ortho-hydroxylated by the binuclear copper (I) complex [Cu₂(6a)(CH₃CN)₂](ClO₄)₂ 8a and molecular dioxygen under mild conditions with up to 80.4% yield, 91.4% selectivity and 92.0% conversion.

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Synthesis of a Novel Series of S-Alkyl Thiobenzoate Compounds as Farnesyltransferase Inhibitors

Sheng Biao WAN, Jun FENG, Feng Ming CHU, Zong Ru GUO

中国化学快报. 2005, 16(02): 151-154.

摘要 ( )

可视化

S-akyl thiobenzoate compounds were designed as famesyltransferase (FTase) inhibitors.An effective synthetic method was explored. The structures of the target compounds were elucidated by NMR spectral and elemental analysis.

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Organic Reactions in Ionic Liquids:Ionic Liquid-promoted Three-component Condensation of Benzotriazole with Aldehyde and Alcohol

Zhang Gao LE, Zhen Chu CHEN, Yi HU, Qin Guo ZHENG

中国化学快报. 2005, 16(02): 155-158.

摘要 ( )

可视化

1-(α-Alkoxyalkyl)benzotriazoles are readily synthesized from three-component condensation of benzotriazole with aldehyde and alcohol in ionic liquid [Bmim]PF₆.

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Synthesis and Properties of A Novel Triphenylamine Derivative

Qing XU, Hong Zheng CHEN, Jing Zhi SUN, Mang WANG

中国化学快报. 2005, 16(02): 159-162.

摘要 ( )

可视化

A novel triphenylamine derivative of 4, 4'-bis-[2-[4-[N, N-bis-(4-methoxyphenyl-amino)] phenyl-1-yl]-vinyl-1-yl]-1, 1'-biphenyl (DMPAVBI) was synthesized. The chemical structure was confirmed by IR, ¹H NMR spectroscopy and elemental analysis. Its properties were studied by UV-Vis spectroscopy, photoluminescence spectroscopy and cyclic voltammetry methods.

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Drug Discovery Based on the Structure of FKBPs:Design,Synthesis and Evaluation of L-1,4-Thiazane-3-carboxylic Acid Derivatives as Neuroimmunophilin Ligands

Ai Hua NIE, Jun Hai XIAO, Hong Ying LIU, Li Li WANG, Song LI

中国化学快报. 2005, 16(02): 163-166.

摘要 ( )

可视化

Based on the structure of FK506, FKBP12 and calcineurin complex and the interactive characteristics of small molecular ligands with FKBPs, a series of L-1,4-thiazane-3-carboxylic acid derivatives as neuroimmunophilin ligands was designed and synthesized. The results of evaluation show that compound N308 has a great promise as a candidate of neuroprotective and neuroregenerative agent.

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Asymmetric Synthesis of (S)-Dimethyl-4,4'-dimethoxy-5,6,5',6'-dimethenedioxy biphenyl-2,2'-dicarboxylate

Sen Xiang CHENG, Li Min WANG, Jun Biao CHANG, Ling Bo QU, Rong Feng CHEN, Jing Xi XIE

中国化学快报. 2005, 16(02): 167-170.

摘要 ( )

可视化

(S)-Dimethyl-4, 4'-dimethoxy-5, 6, 5', 6'-dimethenedioxy-biphenyl-2, 2'-dicarbonylate was synthesized in reasonable yield through a series of reactions, including chiral oxazolinemediated asymmetric Ullmann coupling, from methyl 2-bromo-5-methoxy-3, 4-methenedioxybenzoate.

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A Novel Synthesis of 3-O-Allyl-4,5,6-tri-O-benzyl-1-O-(p-methoxybenzyl)-D-myo-inositol

Zhi Zhou YUE, Yuan Chao LI

中国化学快报. 2005, 16(02): 171-174.

摘要 ( )

可视化

Highly efficient synthesis of the entitled compound was achieved from a readily available myo-inositol derivative. The key step involved a desymmetrization with (+)-camphor dimethyl ketal to give two diastereomers. The two diastereomers could be used to synthesize the same compound by changing the orders to introduce the protective groups.

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Novel Diarylethenes:N-Substituted-3,4-bisheteroaryl-2,5-dihydropyrrole

Yong HAN, Zhi Bin ZHANG, Jun Ping XIAO, Wen Peng YAN, Mei Gong FAN

中国化学快报. 2005, 16(02): 175-178.

摘要 ( )

可视化

Novel diarylethene derivatives:N-substituted-3,4-bisheteroaryl-2,5-dihydropyrroles were synthesized through Mcmurry couple reaction with high yields. The photochromic properties and UV-Vis absorption spectra were studied. The maximal absorptions of their close forms were around at 406 nm or 446 nm, which related mainly with heteroaryl groups but not with substituted groups at nitrogen atom of dihydropyrrole. The absorption of their colored form could be matched with blue light laser.

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Synthesis of Indomethacin Conjugates with D-Glucosamine

Yi Chun ZHANG, Ying Xia LI, Hua Shi GUAN

中国化学快报. 2005, 16(02): 179-182.

摘要 ( )

可视化

Two series of indomethacin conjugates with D-glucosamine were prepared with the objectives of reducing ulcerogenic potency, increasing the bioavailability of indomethacin and exerting the coordinative effects on osteoarthritis. The structures of the conjugates were identified by ¹H NMR and ¹³C NMR. The ester conjugates inhibited edema as potent as indomethacin.

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Friedel-Crafts Acylation of Ferrocene Catalyzed by Solid Superacid,Silica-supported Polytrifluoromethanesulfosiloxane

Rui Jue HU, Bao Guo LI, Min XU

中国化学快报. 2005, 16(02): 183-185.

摘要 ( )

可视化

Solid superacid, silica-supported polytrifluoromethanesulfosiloxane (SiO₂-Si-SCF₃) was firstly used in the Friedel-Crafts acylation of ferrocene as a novel catalyst. IR spectra, WAXD and specific surface area of the superacid SiO₂-Si-SCF₃ were also investigated.

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Asymmetric Total Synthesis of Mansonone P and R

Xuan Jia PENG, Xue Gong SHE, Zi Kun WANG, Wei Guo QUAN, Xin Fu PAN

中国化学快报. 2005, 16(02): 186-188.

摘要 ( )

可视化

An asymmetric total synthesis of mansonone P and R were achieved, in which introduction of hydroxy substituent at position 2 was performed by Sharpless dihydroxylation of sily enol ether.

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A Selective Synthesis of 2-Alkylamino-5,6,7,8-tetrahydro benzothieno[2,3-d]pyrimidin-4(3H)-ones

Ming Wu DING, Rui Jun XU, Jing XU, Yun Feng CHEN

中国化学快报. 2005, 16(02): 189-192.

摘要 ( )

可视化

2-Alkylamino-5, 6, 7, 8-tetrahydrobenzothieno[2, 3-d] pyrimidin-4(3H)-ones 7 were synthesized by a new selective synthetic method, which includes aza-Wittig reaction of iminophosphorane 4 with aromatic isocynate to give carbodiimide 5 and subsequent reaction of 5 with various aliphatic primary amine in the presence of EtO^-Na⁺.

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Synthesis and Structural Characterization of Some Diorganotin Complexes of N-(3,5-Dibromosalicylidene)-α-amino Acid and their Diphenyltin Dichloride Adducts

Lai Jin TIAN, Zhi Cai SHANG, Xi Jie LIU, Qing Sen YU

中国化学快报. 2005, 16(02): 193-196.

摘要 ( )

可视化

The title complexes, R'₂Sn(3,5-Br₂-2-OC₆H₂CH=NCHRCOO), and their diphenyltin dichloride adduct, R'₂Sn(3,5-Br₂-2-OC₆H₂CH=NCHRCOO)·SnPh₂Cl₂, were synthesized and char-acterized by elemental analysis, IR, ¹H and ¹³C NMR and X-ray single crystal diffraction. The structural features of the compounds were described.

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Solid Superacid Catalyzed Efficient Synthesis of 2-Diethylaminoethyl Aryloxyacetates

Ming De CHEN, An Qi CHEN, Min LIN, Zhao Ying LI, Jin CHEN

中国化学快报. 2005, 16(02): 197-200.

摘要 ( )

可视化

2-Diethylaminoethyl aryloxyacetates are prepared efficiently in 75~95% yields by condensation of the corresponding aryloxyacetic acids with 2-diethylaminoethanol in the presence of catalytic amount of solid superacid SO₄^2-/Fe₂O₃.

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Organic Reactions in Ionic Liquids:Ionic Liquid-promoted Efficient Synthesis of Disubstituted and Trisubstituted Thioureas Derivatives

Zhang Gao LE, Zhen Chu CHEN, Yi HU, Qin Guo ZHENG

中国化学快报. 2005, 16(02): 201-204.

摘要 ( )

可视化

In ionic liquid [Bmim][BF₄], a series of disubstituted and trisubstituted thiourea derivatives were synthesized from phenyl and butyl isothiocyanate with a variety of amine in excellent yield.

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Synthesis of the Analogs of Triptolide:7,8-Deoxytriptolide,7 α,8α-Epoxytriptolide and Related Ketones

Fan ZHANG, Yuan Chao LI

中国化学快报. 2005, 16(02): 205-208.

摘要 ( )

可视化

Two novel analogues of triptolide were synthesized using triptolide as the starting material through reductive opening of epoxy ring, hydration and olefin epoxidation, and related ketones have also been afforded by oxidation of them with IBX or Jone's reagent.

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Two Phaeophytin Type Analogues from Marine Sponge Dysidea sp.

Peng Fei JIN, Zhi Wei DENG, Yue Hu PEI, Wen Han LIN

中国化学快报. 2005, 16(02): 209-211.

摘要 ( )

可视化

A new compound named 13b (S)-hydroxy-17c-ethoxypheaophorbide a (2) together with a known compound 17c-ethoxypheaophorbide a (1) were isolated from marine sponge Dysidea sp.collected in South China sea. The structures were elucidated by spectroscopic analysis as well as comparison with those reported in literatures.

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Two New Saponins from Lysimachia davurica

Jing Kui TIAN, Zhong Mei ZOU, Li Zhen XU, Guang Hong TU, Hong Wu ZHANG, Shi Lin YANG, Dong Ge AN

中国化学快报. 2005, 16(02): 212-214.

摘要 ( )

可视化

Two new saponins named davuricoside I (1) and davuricoside E (2) were isolated from the whole plants of Lysimachia davurica. Their structures were determined by 1D and 2D NMR,FAB-MS techniques, and chemical methods.

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Pterocarine,a New Diarylheptanoid from Pterocarya tonkinesis,its Cell Cycle Inhibition at G₀/G₁ Phase and Induction of Apoptosis in HCT-15 and K562 Cells

Hong Bing LIU, Cheng Bin CUI, Bing CAI, Qian Qun GU, Dong Yun ZHANG, Qing Chun ZHAO, Hua Shi GUAN

中国化学快报. 2005, 16(02): 215-218.

摘要 ( )

可视化

Pterocarine (1), a new diarylheptanoidal compound, was isolated from Pterocarya tonkinesis (Franch.) Dode. together with a known diarylheptanoid, myricatomentogenin (2), through a bioassay-guided fractionation procedure. The structure of 1 was elucidated as (+)-3', 4"-epoxy-1-(4'-hydroxyphenyl)-7-(3"-hydroxyphenyl)-heptane-3-one by the spectroscopic methods.Pterocarine (1) inhibited the proliferation of tsFT210, HCT-15 and K562 cells with the inhibition rates of 20.2±2.4, 23.8±2.4 and 50.5±1.2% at 100μg/mL, respectively. Flow cytometric analysis indicated that 1 could inhibit the cell cycle of tsFT210, HCT-15 and K562 cells at the G₀/G₁ phase and could also induce apoptosis in HCT-15 (19%) and K562 (11%) cells.

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Two cyclic peptides produced by the endophytic fungus # 2221 from Castaniopsis fissa on the south China sea coast

Wen Qing YIN, Jie Ming ZOU, Zhi Gang SHE, L. L. P. Vrijmoed, E. B. Gareth Jones, Yong Cheng LIN

中国化学快报. 2005, 16(02): 219-222.

摘要 ( )

可视化

New cyclic peptides 1 and 2 were isolated from the endophytic fungus #2221 from Castaniopsisfissa on the south China sea coast. By 2D NMR methods and chiral HPLC technique,their structures were elucidated as cyclo (L-Val-L-Leu-L-Val-L-Leu) and cyclo(L-Leu-L-Ala-L-Leu-L-Ala), respectively.

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A Novel Triterpenic Acid from Gymnema sylvestre

Shu Lin PENG, Xu Min ZHU, Ming Kui WANG, Li Sheng DING

中国化学快报. 2005, 16(02): 223-224.

摘要 ( )

可视化

A novel oleanane-type triterpenic acid was isolated from the leaves of Gymnema sylvestre (Asclepiadaceae). The structure was characterized as 3β, 16β, 22β, 28-tetrahydroxy-olean-12-en-30-oic acid on the basis of spectral evidence, including 1D- and 2D-NMR (HMQC, HMBC, ¹H-¹H COSY and NOESY).

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Analysis of Glutamic Acid in Cerebrospinal Fluid by Capillary Electrophoresis with High Frequency Conductivity Detection

Hai Yun ZHAI, Jun Mei WANG, Xiao Li YAO, Xue Cai TAN, Pei Xiang CAI, Zuan Guang CHEN

中国化学快报. 2005, 16(02): 225-228.

摘要 ( )

可视化

A rapid method to determine glutamic acid (Glu) in cerebrospinal fluid (CSF) by capillary electrophoresis with high frequency conductivity detection (contactless conductivity detection) was described. The CSF sample was pretreated with silver cation resin to remove high concentration of Cl-ions in CSF. The separation was achieved in the buffer solution of 10 mmol/L Tris and 8 mmol/L boric acid at the separation voltage of 20.0 kV. Glu showed linear response in the range of 5.0×10^-6 to 6.0×10^-3 mol/L, the limit of detection was 1.0×10^-6 mol/L. The method was used for analysis Glu in CSF satisfactorily with a recovery of 97.8-98.8%.

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A Multiwall Carbon Nanotube-chitosan Modified Electrode for Selective Detection of Dopamine in the Presence of Ascorbic Acid

Ling Yan JIANG, Chuan Yin LIU, Li Ping JIANG, Guang Han LU

中国化学快报. 2005, 16(02): 229-232.

摘要 ( )

可视化

A novel multiwall carbon nanotube-chitosan modified electrode has been prepared.The modified electrode resolves the overlapping voltammetric response of dopamine and ascorbic acid into two well-defined peak by 212 mY. The mechanism of discrimination of dopamine from ascorbic acid is discussed. Dopamine can be determined selectively with the carbon nanotube-chitosan modified electrode. The electrode shows good sensitivity, selectivity and stability.

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Perpentylated (2,3,6-Tri-O-pentyl)-β-cyclodextrin Used as Capillary Gas Chromatographic Stationary Phase Prepared by Sol-gel Technology

Min Min LIANG, Mei Ling QI, Yu LENG, Ruo Nong FU

中国化学快报. 2005, 16(02): 233-236.

摘要 ( )

可视化

Capillary column preparation using perpentylated (2,3,6-tri-O-pentyl)-β-cyclodextrin as stationary phase by sol-gel technology with simplicity and rapidity is described. Multiple preparation steps in conventional column technology were avoided. The prepared columns exhibit satisfactory chromatographic performances and pronounced selectivity for a wide range of test solutes, and have been successfully used for the separation of nitrotoluene, dimethoxybenzene,alcohols, alkanes, dimethylphenol and cresol isomers.

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Simultaneous Determination of Dopamine and Uric Acid at 2-Amino-5-mercapto-[1,3,4]triazole Self-assembled Monolayers Gold Electrode

Chuan Yin LIU, Li Zhu YANG, Feng SONG, Ling Yan JIANG, Guang Han LU

中国化学快报. 2005, 16(02): 237-240.

摘要 ( )

可视化

A newly synthesized reagent 2-amino-5-mercapto-[1, 3, 4]triazole (MATZ) has been used to fabricate self-assembled monolayers (SAMs) on gold electrode for the first time. The SAMs electrode was characterized by electrochemical methods and scanning electronic microscopy (SEM),the SAMs electrode can be used to determinate dopamine (DA) and uric acid (UA) simultaneously with a detection limit of 8×10^-7 mol/L for DA and 1×10^-6 mol/L for UA respectively. The SAMs can also be used to detect the contents of DA and UA in synthetic urine sample with satisfactory results.

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Synthesis and Photoluminescence of a Novel Iridium Complex (BuPhOXD)₂Ir(acac) with Unit of 1,3,4-Oxadiazole

Zhong Lian WU, Mei Xiang ZHU, Yu LIU, Jian LIU, Jian Ren LI, Yu Ping YANG, Quan GAN, Wei Guo ZHU

中国化学快报. 2005, 16(02): 241-244.

摘要 ( )

可视化

A novel cyclometalated iridium complex with 1, 3, 4-oxadiazole moiety was synthesized and characterized. Its UV and photoluminescent properties were studied. The strong UV absorption intensity around 462 nm attributed to spin-forbidden triplet metal-ligand charge transfer band and photoluminescence at 518 nm were observed. This indicated that achieved iridium complex could be used as an efficient electrophosphorescent material.

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Polyol Process to Large-scale Synthesis of Cu₂O with Disk-like Structure

Yuan Tao CHEN, Wei ZHANG, Bang Zhi ZHOU, Xiao Qing XU, Yan Qing FAN, You Jing GUO, Zhong Xin ZHANG

中国化学快报. 2005, 16(02): 245-248.

摘要 ( )

可视化

A new form of Cu₂O, disk-like structure with 60 nm in thickness and 2 μm in diameter,has been successfully synthesized in bulk quantifies by polyol process in the presence of PVP K-30.

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Preparation of Single Crystalline V₆O₁₃ Nanobelts

Xian Yun XU, Xiao Guang LI

中国化学快报. 2005, 16(02): 249-252.

摘要 ( )

可视化

Ultralong beltlike nanostructures was successfully synthesized for V₆O₁₃ crystal by a hydrothermal route. The products are characterized by means of X-ray powder diffraction,transmission electron microscopy and high-resolution transmission electron microscopy. The experimental results give the evidence that the V₆O₁₃ nanobelts are pure, structurally uniform and single crystalline, with typical widths of 50 to 300 nm and lengths of up to a few millimeters.

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In-situ Synthesis of Binderless ZSM-5 Zeolitic Coatings on Aluminum

Shu Juan ZHANG, Nai Jia GUAN, Lan Dong LI, Ji Xin CHEN

中国化学快报. 2005, 16(02): 253-256.

摘要 ( )

可视化

ZSM-5 zeolitic coatings on aluminum have been prepared successfully by in-situ hydrothermal synthesis method and ZSM-5/A1 monolith was formed. The effects of pH value and crystallization time on the in-situ synthesis were discussed.

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Fluorescence Switch Based on a Porphyrin-perylene Dyad

Xin Guo YANG, Jing Zhi SUN, Han Ying LI, Jian CAO, Mang WANG

中国化学快报. 2005, 16(02): 257-260.

摘要 ( )

可视化

Upon excitation of porphyrin or perylene subunit, the porphyrin-perylene dyad exhibits reversible fluorescence emitting and quenching by formation and neutralization of the protonated porphyrin subunit, thereby providing a prototype of molecular fluorescence switch working in an expanded spectral range.

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Mesoporous Silicoaluminum Pillared Clays with High Thermal Stability and Brønsted/Lewis Acidity by One-pot Synthesis

Chun Hui ZHOU, Xiao Nian LI, Dong Sheng TONG, Yi Fen ZHU, Zhong Hua GE

中国化学快报. 2005, 16(02): 261-264.

摘要 ( )

可视化

Mesoporous silicoaluminum pillared clays have been synthesized by one-pot gallery-templated synthesis using organomontmorillonite, tetraethyl orthosilicate and alumina isopropoxide as precursor. According to the characterization by powder X-ray diffraction (PXRD), thermogravimetric analysis (TGA), N₂ adsorption isotherms and pyridine adsorption infrared (IR) techniques, the synthetic silicoaluminum pillared clays possess regular porosity with high thermal stability up to 750℃ and Brønsted/Lewis acidity.

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Attachment of Gold Nanoparticles to Carbon Nanotubes

Xi Cheng MA, Ning LUN, Shu Lin WEN

中国化学快报. 2005, 16(02): 265-268.

摘要 ( )

可视化

Carbon nanotubes were initially chemically modified with an H₂SO₄-HNO₃ treatment,and subsequently activated with Pd-Sn catalytic nuclei via a one-step activation approach. These activated nanotubes were used as precursors for obtaining gold nanoparticles-attached nanotubes via simple electroless plating. This approach provides an efficient method for attachment of metal nanostructures to carbon nanotubes. Such novel hybrid nanostructures are attractive for many applications.

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Platinum Nanoparticles Supported on Graphite Nanofibers Prepared by Microwave Irradiation and Its Electrocatalytic Activity

Jie ZHAO, Wei Xiang CHEN, Gui HAN, Yi Fan ZHENG, Zhu De XU

中国化学快报. 2005, 16(02): 269-272.

摘要 ( )

可视化

Platinum nanoparticles supported on graphite nanofibers (GNFs) were prepared by microwave assistant heating polyol process. TEM images showed that microwave prepared Pt nanoparticles supported on GNFs were small and uniform, and the average diameter was about 3.4 nm. Cyclic voltammetric test showed that Pt/GNFs exhibited very high electrocatalytic activity for methanol oxidation.

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Combinatorial Supports for Ru-based Ammonia Synthesis Catalysts

Gui Yu HUANG, Jing Dong LIN, Zhong Xiang XU, Dai Wei LIAO

中国化学快报. 2005, 16(02): 273-274.

摘要 ( )

可视化

The support materials of ruthenium-based catalysts for ammonia synthesis were prepared using mixed solutions composed of magnesium nitrate, aluminum nitrate and calcium nitrate with a certain ratio. The catalysts supported on complex oxides were more active and the optimal activity temperatures were lower than that supported on single oxide under the same conditions.The catalyst with Mg-Al complex oxide as support prepared by calcinafing hydrotalcite-like compound had significantlyhigher activity, 38.42 mL NH₃·h^-1·g^-1 at 673 K. The BET determination showed that the Mg-Al complex oxide possessed large surface area, 140.95 m²·g^-1, similar to γ-Al₂O₃.

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Effects of Carrier on CuO/TiO₂ and CuO/Ti_0.5Zr_0.5O₂ Catalysts in the NO+CO Reaction

Guang Hui DING, Xiao Yuan JIANG, Xiao Ming ZHENG

中国化学快报. 2005, 16(02): 275-278.

摘要 ( )

可视化

Using TiO₂ and Ti_0.5Zr_0.5O₂ as carriers, the CuO/TiO₂ and CuO/Ti_0.5Zr_0.5O₂ catalysts were prepared by the impregnation method with Gu(NO₃)₂ as active component. The catalytic activities in NO+CO reaction were investigated using a microreactor-GC system, and structure and reducibility of catalysts were characterized by means of physical adsorption, TPR, XRD, NO-TPD technologies. It was found that the activity of CuO/Ti_0.5Zr_0.5O₂ catalyst was higher than that of CuO/TiO₂, probably due to the large specific surface area of Ti_0.5Zr_0.5O₂ that played an important role in NO+CO reaction.

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Construction of J-and H-Aggregates of meso-Tetrakis (4-hydroxyphenyl) porphyrin Diacid (H₄THPP²⁺)

Ying Hui ZHANG, Yang WU

中国化学快报. 2005, 16(02): 279-281.

摘要 ( )

可视化

UV-Vis spectrum was utilized to study the aggregation behaviors of H₄THPP²⁺ in DMF-chloroform mixture and water. It was found that J-aggregation of H₄THPP²⁺ was formed in DMF-chloroform mixture and H-aggregate was formed in aqueous solution with high ionic-strength, as indicated by different spectral characteristics of different H₄THPP²⁺ aggregates.

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Dihydroxy Capped Triblock DTC and CL Oligomers Prepared by an Alkyl Glycol/Yttrium Phenolate System

Wei CHEN, Jun LING, Zhi Quan SHEN

中国化学快报. 2005, 16(02): 282-284.

摘要 ( )

可视化

Dihydroxy capped triblock oligomers of 2, 2-dimethyltrimethylene carbonate (DTC) and ε-caprolactone (CL) with number-average molecular weight from 3,000 to 12,000 g/mol have been synthesized by alkyl glycol initiator in the presence of yttrium tri(2, 6-di-tert-butyl-4-methylphenolate)s (Y(OAr)₃) catalyst. They are expected to be used as macroinitiators for the design of new polymeric materials.

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2005年, 第16卷, 第02期　刊出日期：2005-02-20

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2005年, 第16卷, 第02期 刊出日期：2005-02-20

2005年, 第16卷, 第02期　刊出日期：2005-02-20