bluuebunny/crossref_metadata_2025_split huggingface dataset:
Chromatographic Characterization of Molecularly Imprinted Microspheres Synthesized by Aqueous Microsuspension Polymerization : Influences of pH, Kinds and Concentration of Buffer on Capacity Factors
Authors: Lai Jia‐Ping , Lu Chun‐Yang , He Xi‐Wen 
Published: September 2010

AbstractMolecularly imprinted microspheres (MIMs) were prepared using 4‐aminopyridine (4‐AP) as template molecule by aqueous microsuspension polymerization. The MIMs were packed into stainless steel column (250 × 4.6 mm I. D.) for selective separation of 4‐aminopyridine (4‐AP) and 2‐aminopyridine (2‐AP). The influences of pH, kinds and concentration (c) of buffer on capacity factors were investigated in detail. The relationships of capacity factor (k′) with pH and concentration of buffer are quantitatively described firstly. The effects of pH of phosphate and acetate buffer on capacity factors are very different. The relationship between k′ and pH can be described by the following equation: k′ = −8.23 + 9.23 pH–0.99 pH2 (in phosphate buffer) with R2 = 0.9775 and k′ = 6.79–3.76 pH + 0.68 pH2 (in acetate buffer) with R2 = 0.9866. Furthermore, the capacity factors were also greatly affected by the concentration of acetate buffer in mobile phase while non‐imprinted molecule is poorly changed. It increases with decreasing the concentration of buffer—especially in low concentration buffer (cacetate < 0.02 mol/L, final concentration in mobile phase). The fit curve of log k′ to log c is described by equation: log k′ = −0.571–1.256 × log c −0.186 × (log c)2 with R2 = 0.9979. The ratio of acetate buffer to methanol was investigated and the optimal ratio for separation of 4‐AP and 2‐AP is below 1:7.5 (V/V).
Polyaniline/Prussian Blue Composite Film Electrochemical Biosensors for Cholesterol Detection
Authors: Li Jian‐Ping , Peng Tu‐Zhi 
Published: September 2010

AbstractAn electrochemical biosensor fabricated by immobilization of cholesterol oxidase (ChOx) in a polyaniline (PAN)/prussian blue (PB) conductive layer of glassy carbon electrode has been prepared, based on the detection of hydrogen peroxide produced by ChOx at ‐ 0.05 V. The properties of the biosensor were investigated and the measurement conditions for cholesterol were optimized. A linear relationship between electrochemical signal and cholesterol concentration in a range of 1 × 10−6‐8 × 10−5 mol/L was observed. It is one of the most sensitive sensors for cholesterol determination, since a low detection limit of 1.8 × 10−7 mol/L was found. Good properties of the biosensor were attributed to high activity of ChOx and effective electro‐catalysis of PB modifier in the composite layer on electrode surface.
O‐Maltosylation of Heterocyclic Ketene Aminals
Authors: Xu Zhan‐Hui , Huang Zhi‐Tang 
Published: September 2010

AbstractThe stereoselective synthesis of Ø‐maltosides by reacting benzoyl‐substituted heterocyclic ketene aminals 1 or 2 with acetylated maltosyl bromide 3 was investigated. Compounds 1 or 2 reacted with 3 in the presence of mercuric cyanide to give O‐maltosides 4 or 5 with E‐configuration. While 1 reacted with 3 in the presence of calcium hydride to give O‐maltosides 6 with Z‐configuration.
Enantiospecific Synthesis of All Four Stereoisomers of Novel Bicyclic Arylacetamides as k ‐Opioid Agonists
Authors: Long Ya‐Qiu , Mou Qi‐Yong , Qiu Da‐Ping , Wu Rui‐Qin 
Published: September 2010

AbstractConformationally constrained bicyclic derivatives of the potent and selective K‐opioid receptor agonist 2‐(3,4‐dichlorophenyl)‐N‐methyl‐N‐[(1S)‐1‐phenyl‐2‐(1‐pyrrolidinyl)‐ethlyl] acetamide (3, ICI‐199, 441) were designed to explore the effect of the conformational restriction and stereochemistry of the pharmacophoric ethylenediamine incorporated into the pyrrolidine on the affinity and K‐selectivity. A facile enantiospecific synthetic route was established to afford all four stereoisomers starting from readily available amino adds through mild cyclization and amide formation.
Synthesis of Hydrophobically Modified Poly (acrylic acid) Gels and Interaction of the Gels with Cationic/Anionic Surfactants
Authors: Tian Qin , Tang Xbo‐Ztai , Zhuang Dong‐Qing , Zhang Yun‐Xiang 
Published: September 2010

AbstractPoly (acrylic add) (PAA) gel network with only chemical crosslinking and hydrophobically modified PAA (HM‐PAA) gets with both chemical and physical crosslinking were synthesized by radical polymerization in tert‐butanol, using ethylene glycol dimethacrylate (EGDMA) as crosslinker, and 2‐(N‐ethylperfluorooctanesulfoamido) ethyl methacrylate (FMA), stearyl acrylate (SA) or lauryl acrylate (LA) as hydrophobic comonomer respectively. The effect of the fractions and the species of the hydrophobes on swelling properties of HM‐PAA gels and the interaction of gels and surfactants were studied. The results showed that the swelling ratio of HM‐PAA gels exhibited a sharp decrease with increasing hydrophobic comonomer concentration, which could be ascribed to the formation of strong hydrophobic association among hydrophobic groups. It was proved that two kinds of binding mechanisms of surfactant/gel and different kinds of hydrophobic clusters existed in gels containing both physical and chemical networks.
Synthesis of Dendritic BINAP Ligands and Their Applications in Asymmetric Hydrogenation
Authors: Deng Guo‐Jun , Fan Qing‐Hua , Chen Xiao‐Min 
Published: September 2010

AbstractA new type of chiral dendritic ligands with 2,2′‐bis(diphenylphosphino)‐1,1′‐binaphthyl (BINAP) located at the focal point of the dendrimer has been synthesized through the condensation reaction of 5‐amino BINAP and Fréchet‐type poly (aryl ether) dendrons with carboxyl groups as the linker in high reaction yields, respectively. The ruthenium complexes of these dendritic ligands were found to be very efficient catalysts in asymmetric hydrogenation of 2‐phenylacryclic acids as well as facile catalyst recycling.
A Short and Highly Stereoselective Synthesis of Cerebrosterol
Authors: Zhang Dong‐Hiri , Zhou Xiang‐Dong , Zhou Wei‐Shan 
Published: September 2010

AbstractThe title compound, cerebrosterol, has been synthesized in five steps with 61.5% overall yield and > 99.9% de from 3α, 6α‐dimethoxymethoxyl‐5P‐cholane‐24‐al as a key intermediate, which was prepared from methyl 3α, 6α‐dihydroxy hyodeoxy‐cholanate.
Cohesional Entanglement of Amorphous Polymer in Glass State as Probed by Equilibrium Swelling in a “Non‐Solvent”†
Authors: Yu Yan‐Sheng , Qian Ren‐Yuan 
Published: September 2010

AbstractThe equilibrium swelling of the system Polystyrene (PS) (M = 1.7 × 10s, monodisperse)/diethyl ether at 30 °C and 35 °C has been studied in detail in quiescent state for a time span over 150 d. Arguments are given to show that the swelling process in a “non‐solvent” is a network swelling rather than a phase separation process. It is different from the cloud point curve (CPC) experiment studied in literature, where the experiment starts from a one‐phase solution, so that the cohesional entanglement present in the solid polymer is disrupted by dissolution. The cohesional entanglement structure of the solid polymer, on the contrary, is retained in the concentrated phase on swelling, at least in the initial stage. The course of swelling as presented by the curve Va(t) was found to proceed in three stages, where Va is the volume of the concentrated phase. In the first and third stages of Va(t), the curve goes up smoothly, while in the second stage the curve Va(t) shows large up and down jumps, indicating probably a readjustment in the network structure. Some results on a monodisperse PS sample of M = 5.8 × 105 and a polydisperse sample of M = 2.0 × 105 are also given. The values of Va observed at swelling equilibrium are not in accord with the expected cloud point temperature. The cloud point curve represents a phase separation process occurring in local regions (space limited to μm) and in time scale of the order of minute, while the process Va(t) occurred in the whole space of the concentrated phase, in time scale of days. For quantitative characterization of the network present in the concentrated phase, a precise value of the polymer‐solvent interaction parameter x is needed.
Structures of Cytochrome b5 Mutated at the Charged Surface‐Residues and Their Interactions with Cytochrome c†
Authors: Wu Jlan , Wang Yun‐Hua , Gan Jian‐Hua , Wang Wen‐Hu , Sun Bing‐Yun , Huang Zhong‐Xian , Xia Zong‐Xiang 
Published: September 2010

AbstractGlu44, Glu48, Ghi56 and Asp60 are the negatively charged residues located at the molecular surface of cytochrome b5. Two mutants of cytochrome b5 were prepared, in which two or all of these four residues were mutated to alanines. The mutations give rise to slightly positive shifts of the redox potentials of cytochrome b5 and obvious decrease of the cytochrome b5‐cytochrome c binding constants and electron transfer rates. The crystal structures of the two mutants were determined at 0.18 nm resolution, showing no alteration in overall structures and exhibiting slight changes in the local conformations around the mutation sites as compared with the wild‐type protein. Based on the crystal structure of the quadruple‐site mutant, a model for the binding of this mutant with cytochrome c is proposed, which involves the salt bridges from Glu37, Glu38 and heme propionate of cytochrome b5 to three lysines of cytochrome c and can well account for the properties and behaviors of this mutant.
Synthesis and Structure of Solvated Protons Incorporating Weakly Coordinating Anions. Precursors of Superacids†
Authors: Tsang Chi‐Wing , Yang Qing‐Chuan , Mak C. W. Thomas , Xie Zuo‐Wei 
Published: September 2010

AbstractSix new solvated proton salts of highly halogenated carborane anions, [H(solvent),] [carborane] (carborane = 1‐R‐CB11‐Y5X6‐(R=H, Me; X, Y=CI, Br, I), 1‐H‐CB9Br9−) were prepared from the salt metathesis reaction of Ag(carborane) and HO in high yields. Single‐crystal X‐ray analyses show that they are all discrete molecules in the solid‐state. The number of the solvated molecules surrounding H+ ion can not be determined with the knowledge of the size and substituents of the carborane anions. These salts provide convenient weighable sources of Brønsted acid reagents having a wide range of acidities and good thermal stabilities. TGA results indicate that the solvated molecules (water or organic molecules) in the cations [H(solvent)n]+ can be removed under high temperature and high vacuum conditions to give superacidic materials H(carborane) which can protonate olefin.
Synthesis, Structure and Magnetic Properties of Two New Homotrinuclear Bis(oxamato) Copper (II) Complexes
Authors: Wang Qing‐Lun , Liao Dai‐Zheng , Yan Sm‐Ping , Jiang Zong‐Hui , Cheng Peng 
Published: September 2010

AbstractTwo new homotrinuclear copper (II) complexes with 1,3‐propylenebis(oxamato) (pba) and 2‐hydroxy‐l,3‐propylenebis(oxamato) (pbaOH): {[Cu(phen)]2[μ‐Cu(pba)](DMSO)2‐(H1O)}(ClO)4)2.E2O (1) and {[Cu(phen)]2[μ‐Cu(pbaOH)](DMSO)2(H2O)|(CIO4)2.0.5H2O (2) have been synthesized and their structures were determined. Both complexes have the similar homotrinuclear unit and give rise to the bistrinuclear entity through weakly coordinated bonds and π‐π interaction. The temperature magnetic susceptibilities for 1 and 2 were analyzed by means of the Hamiltonian Ȟ = ‐ 27 (ŠCnl ŠCua+ ŠCu1 ŠCu3), leading exchange integral J to be ‐ 105.6 and −107.3 cm−1 for 1 and 2, respectively.
Synthesis and Characterization of Novel Lanthanocene Complexes with Dichalcogenolate o‐Carboranyl Ligands
Authors: Yu Xiao‐Yan , Jin Guo‐Xin , Weng Lin‐Hong 
Published: September 2010

AbstractReactions of [Cp2Ln(μ‐Cl)]2 (Cp= η5‐C5H5, Ln = Nd, Yb, Dy, Gd, Er) with an equivalent of [(THF)3LiE2C2Bi0H10Li. (THF)]2 (E= S, Se) in THF afforded the dinuclear sandwich complexes of formula [CP2LnE2C2B10H10]2[LI(THF)4]2[E = S, Ln=Nd (1a), Yb (2a), Dy (3a), Gd (4a), Er (5a); E=Se, Ln=Nd (1b), Yb (2b), Dy (3b), Gd (4b), Er (5b)]. The molecular structures of complexes la, 2a and 2b were determined by the single crystal X‐ray structure analyses. Two lanthanide atoms are connected by a pair chalcogen (η1, η2‐E2C2B10H10) bridging ligands and the central Ln2E2 four membered ring is not planar.
An Unexpected Reaction of Allylic Propynoate under Palladium(II) Catalysis
Authors: Zhang Zhao‐Guo , Lu Xi‐Yan , Lang Shen‐Hui 
Published: September 2010

AbstractPalladium (II) catalyzed reactions of allyl propynoate in the presence of excess halide ions with or without allyl halide or acrolein were studied, yielding (E)‐3‐halo‐2‐allyl‐acrylic acid as the sole product. A mechanism involving halopalladation, carbopalladation, ring opening and β‐heteroatom elimination was proposed and was further justified by the reaction with deuterated substrate.
Synthesis of Aminophosphine Ligands with Binaphthyl Backbones for Silver(I)‐catalyzed Enantioselective Allylation of Benzaldehyde†
Authors: Wang Yi , Ji Bao‐Ming , Ding Kui‐Liiig 
Published: September 2010

AbstractA series of aminophosphine ligands was synthesized from 2‐amino‐2′‐hydroxy‐1,1′‐binaphthyl (NOBIN). Their asymmetric induction efficiency was examined for silver(I) catalyzed enantioselective allylation reaction of benzaldehyde with allyltributyltin. Under the optimized reaction conditions, quantitative yield as well as moderate ee value (54.5% ee) of product was achieved by the catalysis with silver(I)/3 complex. The effects of the binaphthyl backbone and the substitutes situated at chelating N, P atoms on enantioselectivity of the reaction were also discussed.
Protective Effects of Resveratrol and its Analogues against Free Radical‐Induced Oxidative Hemolysis of Red Blood Cells†
Authors: Fang Jian‐Guo , Lu Man , Ma Lan‐Ping , Yang Li , Wu Long‐Min , Liu Zhong‐Li 
Published: September 2010

AbstractThe in vitro oxidative hemolysis of human red blood cells (RBCs) was used as a model to study the free radical‐induced damage of biological membranes and the protective effect of resveratrol (3,5,4′‐trihydroxy‐trans‐stilbene, 1) and its analogues, i. e., 4‐hydroxy‐trans‐stilbene (2), 3, 5‐dihydroxytrans‐stilbene (3), 3,4‐dihydroxy‐trans‐stilbene (4), 4,4′‐dihydroxy‐trans‐stilbene (5) and 2, 4, 4′‐trihydroxy‐trans‐stilbene (6). The hemolysis of RBCs was induced by a water‐soluble free radical initiator 2, 2′‐azobis (2‐amidinopropane hydrochloride) (AAPH). It was found that addition of AAPH at 37 °C to the suspension of RBCs caused fast hemolysis after a short period of inhibition period, and addition of 1–6 significantly suppressed the hemolysis. Compound 4 which bears an ortho‐dihydroxyl functionality showed much more effective anti‐hemolysis activity than that of resveratrol and the other analogues.
Aerobic Oxidation of Methyl Vinyl Ketone in Supercritical Carbon Dioxide
Authors: Ouyang Xiao‐Yue , Jiang Huan‐Feng , Cheng Jin‐Sheng , Zhang Qun‐Jian 
Published: September 2010

AbstractAerobic oxidation of methyl vinyl ketone to acetal in supercritical carbon dioxide are achieved in high conversion and high selectivity when oxygen pressure reaches to 0.5 MPa. The effects of cocatalysts, additive, pressure and temperature of the reaction are studied in detail.
A New Synthetic Route to Diastereomerically Pure Cyclopropane‐Phosphorus Derivatives Utilizing the Chiron 5‐L‐Menthyloxy‐3‐bromo‐2(5H)‐furanone and Racemic Dialkyl α‐Hydroxyalkanephosphonate
Authors: Fan Xue‐E , Fu Yu‐Qin , Wang Jian‐Ge , Du Qiao‐Yun , Chen Qing‐Hua 
Published: September 2010

AbstractA new chemical transformation for the construction of diversely functionalized cyclopropane‐phosphorus derivatives utilizing chiron 4 and racemic diethyl α‐hydroxylbenzylphosphonate as the key precursors is described. The diastereomeric pure phosphorus‐containing derivatives 5a, 5′a, 5b and 5′b were obtained respectively, in good yields with d. e. 98% via asymmetric tandem double Michael addition/internal nucleophilic substitution of the corresponding compounds and further through the separation of the diastereomeric mixture by column chromatography. The diversely functionalized phosphorus derivatives are identified on the basis of their elemental analysis and spectroscopic data, such as K, 1H NMR, 13C NMR and MS. The absolute configuration of the interesting cyclopropane‐phosphorus compound 5a was established by X‐ray crystallography. Thus, these results provide a valuable strategy for synthesizing some biologically active molecules.
Studies on Synthesis of a Cycloheptapeptide and Effects of Different Metal Ions on the Cyclization
Authors: Liu Mian , Ye Yim‐Hua 
Published: September 2010

AbstractA cyclic heptapeptide, c(Gly‐Ile‐Pro‐Tyr‐Ile‐Ala‐Ala), which was isolated and identified from Stellaria yumumensis French (M), was synthesized by solution method for the first time. Protected heptapeptide Z‐Gly‐Ile‐Pro‐Tyr‐Ile‐Ala‐Ala‐OBzl was synthesized with 3‐(diethoxy‐phosphoryloxy)‐l,2,3‐benzotriazin‐4(3H)‐one (DEPBT) as a coupling reagent. After deprotection of benzyl and benzyloxycarbonyl groups, a free linear heptapeptide H‐Gly‐Ile‐Pro‐Tyr‐Ile‐Ala‐Ala‐OH was cyclized in DMF (2 × 10−3 mol/L) in the presence of nine different metal ions, i. e., Li+, Na+, K+, Cs+, Mg2+, Ca2+, Bai2+, Nr2+ and Cr5+ respectively, using DEPBT as a coupling reagent. Univalent metal ion Cs+ enhanced both the cyclization yield and cyclization rate of H‐Gly‐De‐Pro‐Tyr‐Ile‐Ala‐AlaOH, while some bivalent metal ions, such as Mg2+, Ca2+ and Ni2+ decreased the yields of c (Gly‐Ile‐Pro‐Tyr‐De‐Ala‐Ala) drastically. Trivalent metal ion Cr3+ even inhibited the cyclization reaction completely.
Enzymatic Synthesis of Dipeptide Derivatives Containing Noncoded Amino Acids in Organic Solvents†
Authors: Yang Hong , Zhou Oiuang , Tian Gui‐Ling , Ye Yun‐Hua 
Published: September 2010

AbstractA series of dipeptide derivatives containing non‐coded amino acids, N‐Boc‐4‐X‐Phe‐Ala‐NHNHPh (X = Cl, Br, I, NO2), were synthesized by using thermoase in organic solvents. The physical data were consistent with the same samples prepared by 3‐(diethoxyphosphoryloxy)‐1, 2,3‐benzotriazin‐4 (3H)‐one (DEPBT). Influence of different substituted groups of the noncoded amino acids and different organic solvents on the enzymatic peptide synthesis was studied.
Synthesis of (+) or (‐)‐2‐(8′‐Diphenylphosphino‐1′‐naphthyl) oxazoline Ligands and Their Application in Pd‐Catalyzed Allylic Alkylation Reaction
Authors: Ma Sheng‐Ming , Duan De‐Hui 
Published: September 2010

AbstractWe synthesized optically active 2‐(8′‐diphenylphosphino‐1′‐naphthyl) oxazoline ligands by palladium‐catalyzed coupling reactions of (trimethylsilyl)diphenylphosphine with 2‐(8′‐bromo‐1'‐naphthyl)oxazolines, which, in turn, were prepared from 8‐bromo‐1‐naphthoyl chloride by the reaction with natural optical active amino alcohols. Pd‐Catalyzed allylic alkylation reaction induced by these chiral ligands gave the allylic substituted products in high yields and moderate ee values.
Regio‐ and Stereo‐selective Bioreduction of Diketo‐n‐butylphosphonate by Baker's Yeast
Authors: Wang Ke , Li Jin‐Feng , Yuan Cheng‐Ye , Li Zu‐Yi 
Published: September 2010

AbstractA regio‐ and stereo‐selective reduction of diketo‐n‐butylphosphonates by baker's yeast was reported. The chemical yield and ee value of these reactions are highly dependent on the structure of substrates. The resulting optical active hydroxyalkanephosphonates can be used as chirons for the synthesis of polyfunctional organophosphorus compounds. As useful building block, a series of α, β‐unsaturated ketones bearing chiral hydroxy group in addition to trifluoromethyl moiety was prepared via the Homer‐Wadsworth‐Emmons (HWE) reaction of the biotransformation products.
Synthesis and Structure of a Novel Cluster with Trigonal‐bipyramidal Ge2Ru3 Core
Authors: Zhang Yong‐Qiang , Wang Bai‐Quan , Xu Shan‐Sheng , Zhou Xiu‐Zhong 
Published: September 2010

AbstractWhen t‐BuC5H4Me2GeGeMe2C5E4Bu‐t and Ru3 (CO)12 were refluxed in nonane, a novel germanium‐ruthenium duster with a trigonal‐bipyramidal Ge2Ru3 core {(μ3‐Ge) [Ru(CO)2 (η5‐C5H4Bu‐t)]}2Ru3 (CO)9 (1) and a dinuclear ruthenium complex [(Me2Ge)(η5‐C5H3Bu‐t)Ru2(CO)6] (2) were obtained. The structures of 1 and 2 were fully characterized by 1H NMR, 13C NMR, IR spectra and elemental analysis, and 1 has also been determined by X‐ray diffraction analysis.
Synthesis and Catalytic Application of Homo‐bimetallic Metallocene Complexes as Ethylene Polymerization Catalysts
Authors: Feng Zuo‐Feng , Huang Ji‐Ling , Qian Yan‐Long , Sun Jun‐Quan , Chen Wei 
Published: September 2010

AbstractThree new homo‐bimetallic metallocene complexes were prepared by RCpMCl3 (M= Ti, Zr) and Si‐bridged compounds, and were all well characterized structurally. These complexes with the methylaluminoxane (MAO) are highly active catalysts for the polymerization of ethylene. Compared to the polyethylene obtained by Cp2ZrCl2, the molecular weight (Mw = 78784–238021) of the polyethylene was higher and the molecular weight distribution (MwD = 2.10–2.44) was broader.
Syntheses and Characterizations of Novel One‐dimensional Coordination Polymers Self‐assembled from Co(NCS)2 and Flexible Diester‐bridged Pyridine‐based Ligands
Authors: Song Li‐Cheng , Zhang Wen‐Xiong , Hu Qing‐Mei 
Published: September 2010

AbstractThe self‐assembly reactions of Co(NCS)2 with diester‐bridged pyridine‐based ligands pyCO2‐(CH2)m‐O2Cpy (py = 4‐pyridyl; m = 2, 3, 4) have been studied. Interestingly, while Co(NCS)2 reacted with pyCO2‐(CH2)2‐O2Cpy (La) in MeOH/H2O or THF/MeCN to yield two coordination polymers [Co(NCS)2(La)2]n (1)and[Co(NCS)2(La)2‐2THF]n (2), reactions of Co(NCS)2 with pyCO2‐(CH2)3‐O2Cpy (Lb) in MeOH/MeCN and Co(NCS)2 with pyCO2‐(CH2)4‐Q2Cpy (Lc) in EtOH/H2O afforded [Co(NCS)2(Lb)20.5MeOH]n (3) and [Co(NCS)2(Lc)2‐2H2O]n (4), respectively. The X‐ray diffraction analyses indicated that polymers 1–4 consist of a one‐dimensional Co(II) chain in which each of the two adjacent Co(II) ions is bridged by two pyCO2‐(CH2)m‐O2Cpy ligands to form a macrocycle. In addition, the structures of polymers 1–4 were also characterized by infrared spectroscopy, thermogravimetry and elemental analysis.
Synthesis of [60]Fullerene‐Podophyllotoxin Derivative
Authors: Guo Li‐Wei , Gao Xiang , Zhang Dan‐Wei , Wu Sni‐Hur , Wu Hou‐Ming 
Published: September 2010

AbstractThe [60]fullerene‐podophyllotoxin derivative (3) was obtained by the phosphine promoted [2 + 3] cycloaddition reaction of podophyllotoxin buta‐2,3‐dienoate (2) and [60]fullerene. The structures of starting material (2) and product (3) were confirmed by UV‐vis, IR, NMR and MS spectroscopies.
Preparation of Lanthanide Hydrides of Nanometric Size by the Catalytic Method
Authors: Fan Yin‐Heng , Wu Mei‐Xia , Wu Qiang , Liao Shi‐Jian , Xu Jie 
Published: September 2010

AbstractRare‐earth metals were hydrogenated in the presence of TICI4 catalyst in tetrahydrofuran (THF) at 45 °C under normal pressure. Transmission electron micrographs showed that the resulting lanthanide hydrides were in the form of nanoparticles. The rate of hydrogenation decreased with increasing atomic number of the rare‐earth elements.
Hypervalent Iodine in Synthesis 64: Syntheses of Diaryl Selenides and Alkyl Aryl Selenides by Palladium‐Catalyzed Arylation of Areneselenyl or Alkaneselenyl Magnesium Bromide with Diaryliodonium Salt
Authors: Wang Li , Chen Zhen‐Chu , Zheng Qin‐Guo 
Published: September 2010

AbstractAreneselenyl or alkaneselenyl magnesium bromide reacts rapidly with diaryliodonium salt to give the corresponding diaryl or alkyl aryl selenide in the presence of catalytic amounts of Pd‐(PPh3)4 in good yield.
Tandem Reaction of Deprotonation‐Oxidation‐Wittig Reaction: Stereoselective Synthesis of (E) ‐α, β‐Unsaturated Enoates
Authors: Huang Zhi‐Zhen , Sun Ruo‐Jun 
Published: September 2010

AbstractPhosphonium or arsonium salt with primary alcohol can undergo the tandem reaction of deprotonation‐oxidation‐Wittig reaction in the presence of sodium hydroxide and manganese dioxide, providing a general and efficient method for the stereoselective synthesis of (E) ‐α, β‐unsaturated enoates.