A NEW METHOD FOR PREPARATION OF IRON（Ⅱ） PORPHYRIN COMPLEX－ISOLATION AND CHARACTERIZATION OF AMINE COMPLEX OF FERROUS PORPHYRIN

ＡＮＥＷＭＥＴＨＯＤＦＯＲＰＲＥＰＡＲＡＴＩＯＮＯＦＩＢＯＮ（ＩＩ）ＰＯＲＰＨＹＲＩＮＣＯＭＰＬＥＸ－ＩＳＯＬＡＴＩＯＮＡＮＤＣＨＡＲＡＣＴＥＲＩＺＡＴＩＯＮＯＦＡＭＩＮＥＣＯＭＰＬＥＸＯＦＦＥＲＲＯＵＳＰＯＲＰＨＹＲＩＮ￥ＸｉｎＨｕａＺＨＯＮＧ；Ｙ...     

A NEW METHOD FOR PREPARATION OF IRON（Ⅲ） PORPHYRIN OXYANION COMPLEXES－SYNTHESIS OF PERCHLORATE（PORPHYINATO） IRON（Ⅲ）

ＡＮＥＷＭＥＴＨＯＤＦＯＲＰＢＥＰＡＲＡＴＩＯＮＯＦＩＢＯＮ（Ⅲ）ＰＯＲＰＨＹＲＩＮＯＸＹＡＮＩＯＮＯＭＰＬＥＸＥＳ－ＳＹＮＴＨＥＳＩＳＯＦＰＥＲＣＨＬＯＲＡＴＥ（ＰＯＲＰＨＹＩＮＡＴＯ）ＩＲＯＮ（Ⅲ）￥ＸｉｎＨｕａＺＨＯＮＧ；ＹａｏＹｕＦＥＮＧ；Ｊ...     

A NEW METHOD FOR THE PREPARATION OF PHENOLS AND ITS DERIVATIVES

a-Oxo ketene dithioacetals 2 via 1,2-nucleophilie addition by methallyl magnesius chloride afforded corresponding alcohols (3). Treated with water or methanol and catalyzed by Lewis acid, the alcohols 3 were converted regiospecifical ly to substituted phenols 5' or related phenol methyl ethers 5 respectively. This reaction is a novel approach to the synthesis of phenols and their derivatives starting from non-aromatic precursors.     

PREPARATION AND CHARACTERIZATION OF BINUCLEAR μ-PHENOLATOCOPPER(II)CHELATES.

Two new water-soluble binuclear copper(II)chelates derived from the condensationof 2,6-diformyl-4-methylphenol with glycylglycine were characterized with spectral.magnetic and electrochemical techniques.     

PREPARATION AND CHARACTERIZATION OF NOVEL CHITOSAN DERIVATIVES: ADSORPTION EQUILIBRIUM OF IRON(Ⅲ) ION

The adsorption of Fe(Ⅲ)ions from aqueous solution by chitosan alpha-ketoglutaric acid(KCTS)and hydroxamated chitosan alpha-ketoglutaric acid(HKCTS)was studied in a batch adsorption system.Experiments were carried out as function of pH,temperature,agitation rate and concentration of Fe(Ⅲ)ions.The Langmuir and Freundlich adsorption models were applied to describe the equilibrium isotherms and isotherm constants were determined.The Langmuir model agrees very well with experimental data.The pseudo-first-order and second-order kinetic models were used to describe the kinetic data and the rate constants were evaluated.The dynamical data fit well with the second-order kinetic model.The pseudo second-order kinetic model was indicated with the activation energy of 19.61 and 7.98 kJ/mol for KCTS and HKCTS,respectively.It is suggested that the overall rate of Fe(Ⅲ)adsorption is likely to be controlled by the chemical process.Results also showed that novel chitosan derivatives(KCTS and HKCTS)were favorable adsorbents.     

PREPARATION AND CHARACTERIZATION OF NOVEL CHITOSAN DERIVATIVES:ADSORPTION EQUILIBRIUM OF IRON(Ⅲ)ION

The adsorption of Fe(Ⅲ)ions from aqueous solution by chitosan alpha-ketoglutaric acid(KCTS)and hydroxamated chitosan alpha-ketoglutaric acid(HKCTS)was studied in a batch adsorption system.Experiments were carried out as function of pH,temperature,agitation rate and concentration of Fe(Ⅲ)ions.The Langmuir and Freundlich adsorption models were applied to describe the equilibrium isotherms and isotherm constants were determined.The Langmuir model agrees very well with experimental data.The pseudo-first-order and second-order kinetic models were used to describe the kinetic data and the rate constants were evaluated.The dynamical data fit well with the second-order kinetic model.The pseudo second-order kinetic model was indicated with the activation energy of 19.61 and 7.98 KJ/mol for KCTS and HKCTS,respectively.It is suggested that the overall rate of Fe(Ⅲ)adsorption is likely to be controlled by the chemical process.Results also showed that novel chitosan derivatives(KCTS and HKCTS)were favorable adsorbents.     

PREPARATION AND CHARACTERIZATION OF PVDF-HFP MICROPOROUS MEMBRANE BY TEMPLATE METHOD

Porous poly（vinylidene fluoride-co-hexafluoropropylene） （PVDF-HFP） membranes were successfully prepared using dibutyl phthalate （DBP）, polyvinylpyrrolidone （PVP-K30）, polyethylene glycol 200 （PEG200） as templates. SEM was used to examine the morphology of the PVDF-HFP porous membranes. It was found that these membranes have an asymmetric structure and the blends of PVDF-HFP/DBP formed nanoporous membranes, whereas the blends of PVDF- HFP/PVP-K30 formed ＂sponge-like＂ and microporous membranes. Moreover, the average pore size and porosity was about 0.3 μm and 48.7%, respectively. The crystallinity, thermal stability and mechanical strength of membranes were characterized by XRD, DSC, TGA and stress-strain tests. The results showed that the membranes are a crystals with excellent thermal stability. It was an effective way to regulate pore size and morphology of the PVDF-HFP membranes.     

A NEW METHOD FOR THE PREPARATION OF FULLEROL

ＡＮＥＷＭＥＴＨＯＤＦＯＲＴＨＥＰＲＥＰＡＲＡＴＩＯＮＯＦＦＵＬＬＥＲＯＬ￥ＤａＹｏｎｇＳＵＮ；ＺｉＹａｎｇＬＩＵ；ＸｉｎｇＨｕａＧＵＯ；ＹｉＭｉｎＳＨＥ；ＹｕＺＨＯＵ；ＳｈｕＹｉｎｇＬＩＵ（ＴｈｅＫｅｙＬａｂｏｒａｔｏｒｙｏｆＡｐｐｌｉｅｄＳｐｅｃ...     

PREPARATION AND STRUCTURAL CHARACTERIZATION OF A DIMETHYLAMINE-OCCLUDING GALLOARSENATE

<正> A dirnethylamine-occluding galloarsenate,designated as GaAsO4-2,was prepared hydrothermally and determined structurally by single crystal X-ray diffraction technique. The compound crystallizes in nionoclinic space group P21/n with unit cell con-stants:a=18. 011(4),b=10. 466(4),c=19. 035(4)A ,β=113. 97(6)°,V= 3278. 81 A3,Dc =3. 06gcm-3,Z=4. The three-dimensional net of GaAsO4-2 constructed by Ga, As,O and F atoms has three kinds of open channels. One is formed by 10-T (T = Ga or As)rings packed along [010],the other two are formed by zigzag packing of 8-T rings a-long [100]and [001]. The dimethylamine molecules as templates are located inside the 10-T channels with their NH group pointing toward the channel wall.     

A NEW METHOD FOR PREPARATION OF β-LACTAM SULFOXIDES

Abstract

Penicillin sulfoxides (II) are key intermediates in chemical transformations of penicillins to cephalosporins. Oxidation of the sulfur atom in penicillin nucleus (I) to the sulfoxide (II) has been studied and a new economically feasible method developed.     

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

The synthesis and characterization are reported for a series of bi- and trinuclear complexes of the first transition metal ions with PBDETA, the newly syn thesized 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.     

SYNTRESIS AND CHARACTERIZATION OF A NEW CHIRAL LIQUID CRYSTALLINE (MHHBAB)

ＳＹＮＴＲＥＳＩＳＡＮＤＣＨＡＲＡＣＴＥＲＩＺＡＴＩＯＮＯＦＡＮＥＷＣＨＩＲＡＬＬＩＱＵＩＤＣＲＹＳＴＡＬＬＩＮＥ（ＭＨＨＢＡＢ）￥ＹｉｎｇＹｉｎｇＺＨＡＯ；ＹａｎＱｉｎｇＴＩＡＮ；ＤｅＪｕｎＷＡＮＧ；ＸｉｎＹｉＴＡＮＧ（ＤｅｐａｒｔｍｅｎｔｏｆＣｈ...     

PREPARATION AND CHARACTERIZATION OF INCLUSION COMPLEXES OF TWO-ARM LINEAR AND FOUR-ARM STAR-SHAPED POLY(ε-CAPROLACTONE)S WITH α-CYCLODEXTRIN

Both four-arm star-shaped poly(ε-caprolactone) (4sPCL) and two-arm linear PCL (2LPCL) were synthesized and their inclusion complexation with α-cyclodextrin (α-CD) were studied. The inclusion complexes (ICs) formed between the PCL polymers and α-CD were characterized by 1H-NMR, DSC, TGA, WAXD, and FT-IR, respectively. Both branch arm number and molecular weight of the PCL polymers have apparent effect on the stoichiometry (CL:CD, mol:mol) of these ICs. All these analytical results indicate that the branch arms of the PCL polymers are incorporated into the hydrophobicα-CD cavities and their original crystalline properties are completely suppressed. Moreover, the inclusion complexation between two-arm linear or four-arm star-shaped PCL polymers and α-CD not only enhances the thermal stability of the guest PCL polymers but also improves that of α-CD.     

A NEW METHOD OF PREPARATION OF METAL OXIDE MODIFIED INORGANIC MEMBRANE

ＡＮＥＷＭＥＴＨＯＤＯＦＰＲＥＰＡＲＡＴＩＯＮＯＦＭＥＴＡＬＯＸＩＤＥＭＯＤＩＦＩＥＤＩＮＯＲＧＡＮＩＣＭＥＭＢＲＡＮＥ￥ＲｕＺｈｉＺＨＡＮＧ；ＧｕｏＸｉｎｇＸＩＯＮＧ；ＳｈｉＳｈａｎＳＨＥＮＧａｎｄＸｉｎＳｈｅｎＬＩ（ＳｔａｔｅＫｅｙｌａｂｏｒａｔ...     

SYNTHESIS AND CHARACTERIZATION OF ZEROVALENT PALLADIUM COMPLEXES

A series of nine Pd(0)complexes(L)Pd(L')[L=bis(diphenylphosphino)methane(dppm),1,2-bis(diphenylphosphino)ethane(dppe),and 1,1'-bis(diphenyl-phosphino)ferrocene(dppf),respectively;L=dibenzylideneacetone(dba),2,3,5,6-tetrachloro-1.4-benzoquinone(q)and 2,3-dichloro-1,4-naphthoquinone(nq)]were synthesized and characterized by means of elemental analyses,IR,UV,1~H-NMR and~(31)P-NMR spectra.The redox wave peak potentials of the ferrocenylgroup of complexes with dppf were measured by using CV method.Results showedthat all the diphosphorus ligands behaved as chelating bidentate ligand anddba,q,nq were coordinated to the Pd(0)atom through their C=C moieties,nottheir carbonyl ones.Analytical data also showed that there were interactionsbetween the two different ligands in each complex.     

SYNTHESIS AND CHARACTERIZATION OF POLYMER DERIVATIVES OF cis-PLATINUM COMPLEXES

Cis-platinum complexes used as antitumor drugs were attached onto preformed polymers toreduce the toxicity. Either alternating copolymer of styrene and maleic anhydride (CPSMA) orpolyacrylic acid (PAA) is readily dissolved in alkaline solution. The cis-platinum complexes areeasily converted into water soluble species when treated by silver nitrate in water. The expectedproducts could be obtained when the two aqueous solutions were brought together. The productswere characterized by elementary analysis, IR and XPS. The polymer derivatives could exchangeligands with nucleophilic groups in biological environment and also exhibit antineoplastic activity.     

PREPARATION AND CHARACTERIZATION OF A HIGH TEMPERATURE WATER-GAS SHIFT CATALYST

ＰＲＥＰＡＲＡＴＩＯＮＡＮＤＣＨＡＲＡＣＴＥＲＩＺＡＴＩＯＮＯＦＡＨＩＧＨＴＥＭＰＥＲＡＴＵＲＥＷＡＴＥＲ┐ＧＡＳＳＨＩＦＴＣＡＴＡＬＹＳＴＺｈｏｕＬｉｎｇｐｉｎｇ＊，ＧｕｏＹｉｑｕｎ，ＳｕＹｕｎｌａｉ，ＷａｎｇＷｅｎｘｉａｎｇ（Ｄｅｐａｒｔｍｅｎｔ...     

NEW LIPOPHILIC BISPOCKET-PORPHYRINS FOR CHEMOTHERAPY OF CANCER (PART I); PREPARATION AND PROPERTIES OF 5,10,15,20-TETRAKIS(3′,5′-DI-t-BUTYLPHENYL) PORPHYRIN METAL COMPLEXES1

Abstract

A series of highly lipophilic bis-pocket porphyrins, 5,10,15,20-tetrakis(3′, 5′-di-t-butylphenyl)porphyrin with five metals (copper(II), nickel(II), zinc(II), cobalt(II), and iron(III)), have been prepared and characterized on the basis of electronic, infrared and ¹H NMR spectra. Although electronic spectra of these porphyrins are substantially the same as their prototype tetraphenylporphyrin complexes of the respective metals, their solubility in common organic solvents such as chloroform, benzene, and hexane is dramatically enhanced.