bluuebunny/crossref_metadata_2025 huggingface dataset:
Nigral pathology and parkinsonian signs in elders without Parkinson disease
Authors: Buchman Aron S. , Shulman Joshua M. , Nag Sukriti , Leurgans Sue E. , Arnold Steven E. , Morris Martha C. , Schneider Julie A. , Bennett David A.
Published: August 2011

Objective:

Motor symptoms such as mild parkinsonian signs are common in older persons, but little is known about their underlying neuropathology. We tested the hypothesis that nigral pathology is related to parkinsonism in older persons without Parkinson disease (PD).

Methods:

More than 2,500 persons participating in the Religious Orders Study or the Memory and Aging Project agreed to annual assessment of parkinsonism with a modified version of the Unified Parkinson Disease Rating Scale and brain donation. Brains from 744 deceased participants without PD were assessed for nigral neuronal loss and α‐synuclein immunopositive Lewy bodies.

Results:

Mean age at death was 88.5 years. Mean global parkinsonism was 18.6 (standard deviation, 11.90). About ⅓ of cases had mild or more severe nigral neuronal loss, and about 17% had Lewy bodies. In separate regression models that adjusted for age, sex, and education, nigral neuronal loss and Lewy bodies were both related to global parkinsonism (neuronal loss: estimate, 0.231; standard error [SE], 0.068; p < 0.001; Lewy bodies: estimate, 0.291; SE, 0.133; p = 0.029). Employing a similar regression model that included both measures, neuronal loss remained associated with global parkinsonism (neuronal loss: estimate, 0.206; SE, 0.075; p = 0.006). By contrast, the association between Lewy bodies and global parkinsonism was attenuated by >60% and was no longer significant (Lewy bodies: estimate, 0.112; SE, 0.148; p = 0.447), suggesting that neuronal loss may mediate the association of Lewy bodies with global parkinsonism.

Interpretation:

Nigral pathology is common in persons without PD and may contribute to loss of motor function in old age. Ann Neurol 2012;71:258–266
Facile synthesis of indenones by cyclopalladated ferrocenylimine‐catalyzed annulation of internal alkynes
Authors: Zhang Junli , Yang Fan , Wu Yangjie
Published: August 2011

An efficient and facile protocol for the annulation of o‐halobenzaldehyde derivatives with diverse internal alkynes has been developed using cyclopalladated ferrocenylimine as the catalyst, and the indenones as the products could be obtained in moderate to good yields. It was found for the first time that the addition of benzoic acid could remarkably speed up the reaction process. Copyright © 2011 John Wiley & Sons, Ltd.
Electron‐deficient vanadium(IV) tetraphenylporphyrin: A new, highly efficient and reusable catalyst for chemoselective trimethylsilylation of alcohols and phenols with hexamethyldisilazane
Authors: Moghadam Majid , Mohammadpoor‐Baltork Iraj , Tangestaninejad Shahram , Mirkhani Valiollah , Khosropour Ahmad Reza , Taghavi S. Abdolmanaf
Published: August 2011

In the present work, the application of electron‐deficient tetraphenylporphyrinatovanadium(IV) trifluoromethanesulfonate, [VIV(TPP)(OTf)2], in the trimethylsilylation of alcohols and phenols with hexamethydisilazane (HMDS) is reported. This new V(IV) catalyst was used as an efficient catalyst for silylation of not only primary alcohols but also sterically hindered secondary and tertiary alcohols with HMDS. Trimethylsilylation of phenols with HMDS was also performed to afford the desired Trimethylsilyl ethers (TMS) ethers. The chemoselectivity of this method was also investigated. This catalyst can be reused several times without loss of its activity. Copyright © 2011 John Wiley & Sons, Ltd.
Determination of the transition temperature at different cooling rates and its influence on prediction of shrinkage and warpage in injection molding simulation
Authors: Lucyshyn Thomas , Knapp Gilbert , Kipperer Michael , Holzer Clemens
Published: August 2011

In injection molding simulation the phase change from melt to solid state is usually simplified by using a so called transition temperature. In the present work, the transition temperatures of several amorphous and semicrystalline polymers were determined using DSC‐runs at different cooling rates. The transition temperature was described as a function of cooling rate. The obtained transition temperatures of the semicrystalline polymers were used in injection molding simulations with the commercial software package Autodesk Moldflow Insight 2010 to calculate the shrinkage and warpage of box‐shaped test parts. The simulation results were compared with the experimental values of optically measured injection‐molded boxes. The results showed a strong influence of the transition temperatures on the simulation results of a 3D model and a very low influence for a 2.5D model. Transition temperatures obtained at higher cooling rates improved the 3D simulation results for several dimensions. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
Geometry of the inkjet‐printed sensing layer for a better volatile organic compound sensor response
Authors: De Girolamo Del Mauro A. , Grimaldi I. A. , Loffredo F. , Massera E. , Polichetti T. , Villani F. , Di Francia G.
Published: August 2011

Volatile organic compound (VOC) chemical sensors increasingly rely on the use of polymer nanocomposites (PNCs) as sensing materials, thanks to the simple processability of polymers combined with the conductivity properties of nanoparticles dispersed in an insulating polymer matrix. Recently, inkjet printing (IJP), the main advantage of which is its patterning capability, was proven to be a reliable technique for the deposition of these materials. In this work, PNC chemical sensors were fabricated by IJP of a polystyrene/carbon black based ink. The sensor responses were measured upon exposure to acetone vapors and analyzed as function of the sensitive material geometry. Among the different realized geometries, the lines transverse to the interdigitated electrodes fingers resulted in the optimal configuration for the sensing layer in a VOC chemical sensor. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
Epoxy–nanocomposites with ceramic reinforcement for electrical insulation
Authors: Amendola E. , Scamardella A. M. , Petrarca C. , Acierno D.
Published: August 2011

Ceramic nanoparticles, that is, SiO2, TiO2, and Al2O3 nanoparticles, with increasingly high thermal conductivity (λ), represent good candidates for improving the thermophysical properties of epoxy resins. In this study, the influence of filler addition on the thermal, mechanical, and dielectric properties were investigated by means of differential scanning calorimetry, dynamic mechanical analysis, and dielectric spectroscopy to measure λ, storage and loss moduli, dielectric permittivity, and volume resistivity. Moreover, morphological investigations by scanning electron microscopy were performed to confirm the particle dispersion into the epoxy matrix. The results show that both the elastic modulus and glass‐transition temperature increased with particle content. An enhancement of λ was also observed at high filler contents because of the formation of heat conductive pathways within the matrix. The nanocomposites' relative permittivity at 50 Hz was lower, whereas the dielectric loss was slightly higher compared with that of the neat epoxy matrix. A decrease in the relative permittivity with increasing frequency, both for the unfilled epoxy resin and epoxy–nanocomposites, was observed. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
Nanocomposite foams from high‐performance thermoplastics
Authors: Sorrentino L. , Aurilia M. , Cafiero L. , Iannace S.
Published: August 2011

The foaming processes of nanocomposites based on high‐performance thermoplastic polymers, namely, poly(ether sulfone) (PES; amorphous) and poly (ethylene‐2,6‐naphthalate) (PEN; semicrystalline), reinforced by two nanofiller types (expanded graphite and SiO2 nanopowder), were investigated. Matrices were prepared by melt blending through extrusion, and a good dispersion of particles was achieved, as confirmed by microscopic and X‐ray diffraction analyses. A solid‐state foaming technique was used to prepare the foams; the samples were solubilized with carbon dioxide and quickly heated in an oil bath to the selected foaming temperature. The effects of both the type and concentration of the filler and the polymer type (amorphous and semicrystalline) on the cellular morphology were analyzed. Foams prepared from PES‐based nanocomposites showed microcellular morphologies and higher numbers of nucleated cells (up to 1011 cells/cm3), but low expansion ratios were achieved compared to PEN‐based foams. Both SiO2 and graphite nanoparticles acted as cell nucleating agents in the PES nanocomposites, but the latter gave better results, increasing the cell number by two orders of magnitude with respect to the neat polymer. This behavior was attributed to either the heterogeneous nucleation of cells or the improved barrier to gas diffusion of the graphite nanoplatelets with respect to SiO2 nanoparticles. The PEN nanocomposite foams exhibited low foam densities, but fewer cells were nucleated with respect to the PES nanocomposites. The increase in the crystallization rate related to the presence of fillers, in particular when graphite was used, affected the expansion ratio at high foaming temperatures. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
Nanotechnology in plastic food‐contact materials
Authors: Hatzigrigoriou N. B. , Papaspyrides C. D.
Published: August 2011

A review is presented concerning the application of nanotechnology in the polymer food‐packaging sector. Emphasis is placed on the benefits of polymer nanocomposite materials in terms of their improved mechanical and processability properties but also in terms of more packaging‐oriented attributes, such as enhanced barrier properties. In addition, nanotechnology is expected to introduce some novel and beneficial characteristics to plastic packaging materials. These characteristics include the induction of antimicrobial properties, oxygen scavenging, enzyme immobilization, and sensing of food conditions. Besides these novel properties, the need to explore the potential health impact of nanoparticles is also discussed, with a focus on the possibility of nanocomponent migration into the packaged foodstuff. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
Dispersion and characterization of thermoplastic polyurethane/multiwalled carbon nanotubes by melt mixing
Authors: Benedito Adolfo , Buezas Ignacio , Giménez Enrique , Galindo Begoña , Ortega Amaya
Published: August 2011

The dispersion of multiwalled carbon nanotubes (MWCNT) in thermoplastic polyurethanes (TPUs) was evaluated in a corotative twin‐screw extruder through a melt‐blending process. A specific experimental design was prepared with different parameters, such as screw speed, screw design, and carbon nanotube loading, taken into account. The obtained samples were characterized by thermogravimetric analysis, light transmission microscopy, field emission scanning electron microscopy, dynamic rheometry, dynamic mechanical analysis, and electrical conductivity. This work focuses on the influence of the compounding parameters in the dispersion quality of MWCNTs in a TPU matrix to optimize them for an industrial scaleup. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
Use of human embryonic stem cell derived‐mesenchymal cells for cardiac repair
Authors: Simpson David L. , Boyd Nolan L. , Kaushal Sunjay , Stice Steve L. , Dudley Samuel C.
Published: August 2011

Human mesenchymal stem cells (hMSC) have proven beneficial in the repair and preservation of infarcted myocardium. Unfortunately, MSCs represent a small portion of the bone marrow and require ex vivo expansion. To further advance the clinical usefulness of cellular cardiomyoplasty, derivation of “MSC‐like” cells that can be made available “off‐the‐shelf” are desirable. Recently, human embryonic stem cell‐derived mesenchymal cells (hESC‐MC) were described. We investigated the efficacy of hESC‐MC for cardiac repair after myocardial infarction (MI) compared to hMSC. Because of increased efficacy of cell delivery, cells were embedded into collagen patches and delivered to infarcted myocardium. Culture of hMSC and hESC‐MCs in collagen patches did not induce differentiation or significant loss in viability. Transplantation of hMSC and hES‐MC patches onto infarcted myocardium of athymic nude rats prevented adverse changes in infarct wall thickness and fractional area change compared to a non‐viable patch control. Hemodynamic assessment showed that hMSCs and hES‐MC patch application improved end diastolic pressure equivalently. There were no changes in systolic function. hES‐MC and hMSC construct application enhanced neovessel formation compared to a non‐viable control, and each cell type had similar efficacy in stimulating endothelial cell growth in vitro. In summary, the use of hES‐MC provides similar efficacy for cellular cardiomyoplasty as compared to hMSC and may be considered a suitable alternative for cell therapy. Biotechnol. Bioeng. 2012;109: 274–283. © 2011 Wiley Periodicals, Inc.
Heparan sulfate proteoglycan mediates shear stress‐induced endothelial gene expression in mouse embryonic stem cell‐derived endothelial cells
Authors: Nikmanesh Maria , Shi Zhong‐Dong , Tarbell John M.
Published: August 2011

It has been shown that shear stress plays a critical role in promoting endothelial cell (EC) differentiation from embryonic stem cell (ESC)‐derived ECs. However, the underlying mechanisms mediating shear stress effects in this process have yet to be investigated. It has been reported that the glycocalyx component heparan sulfate proteoglycan (HSPG) mediates shear stress mechanotransduction in mature EC. In this study, we investigated whether cell surface HSPG plays a role in shear stress modulation of EC phenotype. ESC‐derived EC were subjected to shear stress (5 dyn/cm2) for 8 h with or without heparinase III (Hep III) that digests heparan sulfate. Immunostaining showed that ESC‐derived EC surfaces contain abundant HSPG, which could be cleaved by Hep III. We observed that shear stress significantly increased the expression of vascular EC‐specific marker genes (vWF, VE‐cadherin, PECAM‐1). The effect of shear stress on expression of tight junction protein genes (ZO‐1, OCLD, CLD5) was also evaluated. Shear stress increased the expression of ZO‐1 and CLD5, while it did not alter the expression of OCLD. Shear stress increased expression of vasodilatory genes (eNOS, COX‐2), while it decreased the expression of the vasoconstrictive gene ET1. After reduction of HSPG with Hep III, the shear stress‐induced expression of vWF, VE‐cadherin, ZO‐1, eNOS, and COX‐2, were abolished, suggesting that shear stress‐induced expression of these genes depends on HSPG. These findings indicate for the first time that HSPG is a mechanosensor mediating shear stress‐induced EC differentiation from ESC‐derived EC cells. Biotechnol. Bioeng. 2012; 109:583–594. © 2011 Wiley Periodicals, Inc.
Flavonoid profiling in three citrus varieties native to the Republic of Korea using liquid chromatography coupled with tandem mass spectrometry: contribution to overall antioxidant activity
Authors: Kim Hae Gyeong , Kim Gon‐Sup , Park Semin , Lee Jung Han , Seo On Nuri , Lee Soo Jung , Kim Jae Hoon , Shim Jae‐Han , Abd El‐Aty A. M. , Jin Jong Sung , Shin Sung Chul
Published: August 2011

A mixture of flavonoid components was isolated from the fruit peel of three varieties of citrus native to Republic of Korea, Citrus leiocarpa Hort. ex Tanaka (CLHT), Citrus aurantium L. (CAL) and Citrus erythrosa Hort. (CEH), via 70% methanol extraction followed by ethyl acetate elution over a silica gel cartridge. The flavonoid components of the mixture were analyzed via high‐performance liquid chromatography–tandem mass spectrometry (HPLC‐MS/MS) in positive‐ion mode and a comparison of the reported data. Among 17 characterized components, two flavanones, four flavones and two coumarin derivatives in the fruit peel of the three varieties were identified for the first time. The individual characterized components were quantified via HPLC‐UV. The flavanones dominated in CAL, whereas the flavones prevailed in CLHT and CEH. The antioxidant activity of the flavonoid mixture of the fruit peel was determined via DPPH•, ABTS•+ and reducing power assays. The antioxidant activity of CEH and CAL was greater than that of CLHT. Copyright © 2011 John Wiley & Sons, Ltd.
Hybrid modeling framework for process analytical technology: Application toBordetella pertussiscultures
Authors: von Stosch M. , Oliveria R. , Peres J. , de Azevedo S. Feyo
Published: August 2011

In the process analytical technology (PAT) initiative, the application of sensors technology and modeling methods is promoted. The emphasis is on Quality by Design, online monitoring, and closed‐loop control with the general aim of building in product quality into manufacturing operations. As a result, online high‐throughput process analyzers find increasing application and therewith high amounts of highly correlated data become available online. In this study, an hybrid chemometric/mathematical modeling method is adopted for data analysis, which is shown to be advantageous over the commonly used chemometric techniques in PAT applications. This methodology was applied to the analysis of process data ofBordetella pertussiscultivations, namely online data of near‐infrared, (NIR), pH, temperature and dissolved oxygen, and off‐line data of biomass, glutamate, and lactate concentrations. The hybrid model structure consisted of macroscopic material balance equations in which the specific reactions rates are modeled by nonlinear partial least square (PLS). This methodology revealed a significant higher statistical confidence in comparison to PLSs, translated in a reduction of mean squared prediction errors (e.g., individual root mean squared prediction errors calibration/validation obtained through the hybrid model for the concentrations of lactate: 0.8699/0.7190 mmol/L; glutamate: 0.6057/0.2917 mmol/L; and biomass: 0.0520/0.0283 OD; and obtained through the PLS model for the concentrations of lactate: 1.3549/1.0087 mmol/L; glutamate: 0.7628/0.3504 mmol/L; and biomass: 0.0949/0.0412 OD). Moreover, the analysis of loadings and scores in the hybrid approach revealed that process features can, as for PLS, be extracted by the hybrid method. © 2011 American Institute of Chemical Engineers Biotechnol. Prog., 2012
Towards the Rational Design of MRI Contrast Agents: δ‐Substitution of Lanthanide(III) NB‐DOTA‐Tetraamide Chelates Influences but Does Not Control Coordination Geometry
Authors: Carney Christiane E. , Tran Anh D. , Wang Jing , Schabel Matthias C. , Sherry A. Dean , Woods Mark
Published: August 2011

LnDOTA‐tetraamide chelates (DOTA=1,4,7,10‐tetraazacyclododecane‐1,4,7,10‐tetraacetic acid) have received considerable recent attention as a result of their potential to act as PARACEST contrast agents for magnetic resonance imaging (MRI). Although PARACEST agents afford several advantages over conventional contrast agents they suffer from substantially higher detection limits; thus, improving the effectiveness of LnDOTA‐tetraamide chelates is an important goal. In this study we investigate the potential to extend conformational control of LnDOTA‐type ligands to those applicable to PARACEST. Furthermore, the question of whether δ‐ rather than α‐substitution of the pendant arms could be used to control the chelate coordination geometry is addressed. Although δ‐substitution does influence coordination geometry it does not afford control. However, it can play an important role in governing the conformation of the amide substituent relative to the chelate in such as way that suggests a PARACEST agent could be designed that has detection limits at least as low as a conventional MRI contrast agent.
Electrochemistry at Chemically Modified Graphenes
Authors: Ambrosi Adriano , Bonanni Alessandra , Sofer Zdeněk , Cross Jeffrey S. , Pumera Martin
Published: August 2011

Electrochemical applications of graphene are of great interest to many researchers as they can potentially lead to crucial technological advancements in fabrication of electrochemical devices for energy production and storage, and highly sensitive sensors. There are many routes towards fabrication of bulk quantities of chemically modified graphenes (CMG) for applications such as electrode materials. Each of them yields different graphene materials with different functionalities and structural defects. Here, we compare the electrochemical properties of five different chemically modified graphenes: graphite oxide, graphene oxide, thermally reduced graphene oxide, chemically reduced graphene oxide, and electrochemically reduced graphene oxide. We characterized these materials using transmission electron microscopy, Raman spectroscopy, high‐resolution X‐ray photoelectron spectroscopy, electrochemical impedance spectroscopy, and cyclic voltammetry, which allowed us to correlate the electrochemical properties with the structural and chemical features of the CMGs. We found that thermally reduced graphene oxide offers the most favorable electrochemical performance among the different materials studied. Our findings have a profound impact for the applications of chemically modified graphenes in electrochemical devices.
Fabrication of Nanoporous Nanocomposites Entrapping Fe3O4 Magnetic Nanoparticles and Oxidases for Colorimetric Biosensing
Authors: Kim Moon Il , Shim Jongmin , Li Taihua , Lee Jinwoo , Park Hyun Gyu
Published: August 2011

A nanostructured multicatalyst system consisting of Fe3O4 magnetic nanoparticles (MNPs) as peroxidase mimetics and an oxidative enzyme entrapped in large‐pore‐sized mesoporous silica has been developed for convenient colorimetric detection of biologically important target molecules. The construction of the nanocomposites begins with the incorporation of MNPs on the walls of mesocellular silica pores by impregnating Fe(NO3)3⋅9 H2O, followed by the immobilization of oxidative enzymes. Glutaraldehyde crosslinking was employed to prevent enzymes leaching from the pores and led to over 20 wt % loading of the enzyme. The oxidase in the nanocomposite generates H2O2 through its catalytic action for target molecules and subsequently activates MNPs to convert selected substrates into colored products. Using this strategy, two different biosensing systems were constructed employing glucose oxidase and cholesterol oxidase and their analytical capabilities were successfully verified by colorimetrically detecting the corresponding target molecules with excellent selectivity, sensitivity, reusability, and stability. Future potential applications of this technology range from biosensors to multicatalyst reactors.
A Fluorescent Molecular Sensor for pH Windows in Traditional and Polymeric Biocompatible Micelles: Comicellization of Anionic Species To Shift and Reshape the ON Window
Authors: Cavallaro Gennara , Giammona Gaetano , Pasotti Luca , Pallavicini Piersandro
Published: August 2011

A new approach is presented to obtain fluorescent sensors for pH windows that work in water and under biomimetic conditions. A single molecule that features all‐covalently linked components is used, thus making it capable of working as a fluorescent sensor with an OFF/ON/OFF response to pH value. The components are a tertiary amine, a pyridine, and a fluorophore (pyrene). The forms with both protonated bases or both neutral bases quench the pyrene fluorescence, whereas the form with the neutral pyridine and protonated amine groups is fluorescent. The molecular sensor is also equipped with a long alkyl chain to make it highly hydrophobic in all its protonated and unprotonated forms, that is, either when neutral or charged. Accordingly, it can be confined at any pH value either in traditional (i.e., low‐molecular‐weight) nonionic surfactant micelles or inside polymeric, biocompatible micellar containers. Relevant for future applications in vivo, thanks to its strong hydrophobicity, no leakage of the molecular sensor is observed from the polymeric biocompatible micelles. Due to the proximity of the pyridine and amine functions in the molecular structure and the poor hydration inside the micelles, the observed pKa values are low so that the ON window is positioned at very low pH values. However, the window can be shifted to biologically relevant values by comicellization of anionic species. In particular, in the micelles of the nonionic surfactant TritonX‐100, a shift of the ON window to pH 4–6 is obtained by addition of the anionic sodium dodecyl sulphate surfactant, whose negative charge promotes the stability of the protonated forms of the pyridine and amine fragments. In the case of the polymeric micelles, we introduce the use of the amphiphilic polystyrene sulfonate anionic polyelectrolyte, the comicellization of which induces a shift and sharpening of the ON window that is centered at pH 4.
ChemInform Abstract: Synthesis, Crystal Structure, and Ru/Ir Site Preference in the Complex Boride Series Ti2FeRu5‐xIrxB2 and Zr2Fe1‐δRu5‐x+δIrx B2 (x = 1—4, δ < 0.15).
Authors: Hermus Martin , Fokwa Boniface P. T.
Published: August 2011

Ti2FeRu2.85Ir2.15B2, Ti2FeRu2.34Ir2.66B2, Zr2Fe0.86Ru4.12Ir1.02 B2, and Zr2Fe0.87Ru3.22Ir1.92 B2 are synthesized with yields of 79—92% from the elements by arc‐melting and characterized by powder and single crystal XRD.
ChemInform Abstract: Synthesis of Red‐Emitting (Gd, Ca, Eu)2W2O9 Phosphors.
Authors: Kim Sun Woog , Masui Toshiyuki , Imanaka Nobuhito
Published: August 2011

Red‐emitting (Gd1‐x‐yCaxEuy) 2W2O9‐x phosphors (0 ≤ x ≤ 0.05 and 0.05 ≤ y ≤ 1.00) are prepared by solid state reactions of Gd2O3, Eu2O3, CaO, and WO3 (1000 °C, 30 h in air).
ChemInform Abstract: Reddish Orange Long Afterglow Phosphor Ca2SnO4:Sm3+ Prepared by Sol—Gel Method.
Authors: Ju Zheng‐Hua , Zhang Shui‐He , Gao Xiu‐Ping , Tang Xiao‐Liang , Liu Wei‐Sheng
Published: August 2011

The title phosphor is synthesized by the sol—gel method starting with an aqueous solutions containing Ca(NO3)2, SnCl4, Sm2O3, HNO3, and citric acid (90 °C, calcination of the obtained gel at 900 °C for 6 h in air).
ChemInform Abstract: MgF2 Doping of SmFeAsO Superconductors Prepared by Mechanical Alloying and Rapid Annealing.
Authors: Shi Sui‐Lin , Fang Ai‐Hua , Xie Xiao‐Ming , Huang Fu‐Qiang , Jiang Mian‐Heng
Published: August 2011

Magnesium and fluorine codoped Sm1‐x/2Mgx/2FeAsO1‐xFx (x = 0—0.3) superconductors are prepared by ball milling of stoichiometric mixtures of SmAs, Fe, Fe2O3, As, and MgF2 (argon, 480 rpm, 4 h) followed by sintering at 1160 °C for 4 h.
ChemInform Abstract: Thallium Chalcogenide‐Based Wide‐Band‐Gap Semiconductors: TlGaSe2 for Radiation Detectors.
Authors: Kanatzidis Mercouri G. , et al. et al.
Published: August 2011

TlGaSe2 is synthesized from stoichiometric mixtures of TlSe, Ga, and Se (500 °C).
ChemInform Abstract: High‐Pressure Synthesis and Correlation Between Structure, Magnetic, and Dielectric Properties in LiNbO3‐Type MnMO3 (M: Ti, Sn).
Authors: Aimi Akihisa , Katsumata Tetsuhiro , Mori Daisuke , Fu Desheng , Itoh Mitsuru , Kyomen Toru , Hiraki Ko‐ichi , Takahashi Toshihiro , Inaguma Yoshiyuki
Published: August 2011

The title compounds are prepared by high‐pressure transformation of ilmenite‐type MnTiO3 and MnSnO3 (gold tube, 7 GPa; 700 °C, 2 h for M: Ti and 800 °C, 0.5 h for M: Sn) followed by annealing at 200 °C for 6 h in air and at 400 °C for 6 h in N2 atmosphere, respectively.
ChemInform Abstract: High‐Yield Synthesis of Boron Nitride Nanotubes by Annealing Fe3BO6.
Authors: Li Jie , Zhang Laiping , Gu Yunle , Qian Qiongli , Wang Jilin , Zhao Guowei , Pan Xinye
Published: August 2011

BN nanotubes with bamboo‐like structures are prepared in high yield (given in g) via chemical vapor deposition by annealing Fe3BO6 under NH3 atmosphere at 1100 °C.
ChemInform Abstract: Fluoride‐Rich, Hydrofluorothermal Routes to Functional Transition Metal (Mn, Fe, Co, Cu) Fluorophosphates.
Authors: Armstrong Jennifer A. , Williams Edward R. , Weller Mark T.
Published: August 2011

About 50 new transition metal (Mn, Fe, Co, Cu) fluorophosphates including (NH4)3Fe4F9 (PO4)2 (yield given in g, monoclinic, space group P21/m), (MeNH3)FeFPO4 (80% yield, orthorhombic, Pnna), (NH4) [Co3F2(P2O6F)2] (60% yield, monoclinic, P21/c), [H2—N‐(2‐aminoethyl)‐1,3‐propane‐diamine]2{ [Co(PO3F)]4F [PO2F2]2}· (H2O,F) (50% yield, tetragonal, P4$\bar n$2), (NH4)(MnF2PO3F) (yield given in g, monoclinic, P21/n), Na4Mn2F6(P2O7) (70% yield, monoclinic, P2/n), MCu3(PO2F2)(PO3F)2 (M: K, Rb; yields given in g, monoclinic, C2/c), and Rb2Cu3(PO3F)4 (yield given in g, monoclinic, P21/c) are synthesized by hydrofluorothermal reactions of a transition metal fluoride with a phosphate source in a very low‐water, high‐fluoride content system and in the presence of framework charge balancing metal cations or template molecular cations.
ChemInform Abstract: Synthesis, Crystal Structure and Vibrational Spectra of Mg2[BN2]Br: A New Magnesium Nitridoborate Halide with Discrete [N—B—N]3‐ Groups.
Authors: Kokal Ilkin , Somer Mehmet , Akselrud Lev , Hoehn Peter , Carrillo‐Cabrera Wilder
Published: August 2011

The title compound is prepared by solid state reaction of a stoichiometric mixture of Mg3N2, BN, and MgBr2 (sealed Nb ampule, 1473 K, 24 h, slow cooling).
ChemInform Abstract: First Isolated “Hypoelectronic” [In6]6‐ Cluster in Insulating Cs22In6(SiO4)4.
Authors: Saltykov Vyacheslav , Nuss Juergen , Wedig Ulrich , Prasad Dasari L. V. K. , Jansen Martin
Published: August 2011

Cs22In6(SiO4)4 is synthesized by solid state reaction of Cs, Cs2O, In, and SiO2 in the molar ratio 23:8:6:4 (sealed Ta tube, Ar, 673 K, 2 d).
ChemInform Abstract: Synthesis and Crystal Structure of Cubic Perovskite‐Type BaMoxTi1‐xO3 with (x ≈ 0.175).
Authors: Kataoka Kunimitsu , Kijima Norihito , Hayakawa Hiroshi , Ohshima Ken‐ichi , Akimoto Junji
Published: August 2011

Black single crystals of the new title compound are prepared from mixtures of Ba2Ti13O22, BaCO3, and B2O3 in a mass ratio of 1:5:5 using BaCO3—B2O3 as a flux (Mo crucible, Ar, 1423 K, 10 h).
ChemInform Abstract: High‐Pressure Synthesis and Superconductivity of a New Binary Barium Germanide BaGe3.
Authors: Fukuoka Hiroshi , Tomomitsu Yusuke , Inumaru Kei
Published: August 2011

The title compound is obtained from a mixture of BaGe2 and Ge under high‐pressure/high‐temperature conditions (Kawai type multi‐anvil press, 10 GPa, 1200 °C).
ChemInform Abstract: The Inverse Perovskite (Ca2EuNx)Sn: A Rare Example for a Homogeneously Mixed‐Valent Compound?
Authors: Gaebler Frank , Braeunling Daniel , Schnelle Walter , Schellenberg Inga , Poettgen Rainer , Niewa Rainer
Published: August 2011

The cubic inverse perovskite (Ca2EuN0.75)Sn is synthesized by solid state reaction of Ca, EuN, and Sn in a molar ratio of 2:1:1 (Ta ampule, 1213 K, 192 h and 1323 K, 96 h).
ChemInform Abstract: The Ternary Nitrides InxFe4‐xN (0 ≤ x ≤ 0.8): Synthesis, Magnetic Properties, and Theoretical Considerations.
Authors: Burghaus Jens , Kleemann Julian , Dronskowski Richard
Published: August 2011

The title compounds are prepared by sintering mixtures of In2O3 and Fe2O3 at 600 °C for 5 h followed by ammonolysis with a 1:1 NH3:H2 mixture at 500 °C for 3 h.
ChemInform Abstract: cis‐2,5‐Diaminobicyclo[2.2.2]octane, a New Scaffold for Asymmetric Catalysis via Salen—Metal Complexes.
Authors: White James D. , Shaw Subrata
Published: August 2011

Chromium‐salen complex (I) is applied to the asymmetric hetero Diels—Alder reaction of (II) with aldehydes and to the asymmetric Nozaki—Hiyama—Kishi reaction of allyl bromide or chloride with aldehydes.
ChemInform Abstract: Novel Pyrrolidine‐thiohydantoins/thioxotetrahydropyrimidinones as Highly Effective Catalysts for the Asymmetric Michael Addition.
Authors: Kokotos Christoforos G. , Limnios Dimitris , Triggidou Despoina , Trifonidou Maria , Kokotos George
Published: August 2011

A novel group of bifunctional organocatalysts containing a pyrrolidine and a cyclic thiourea moiety is presented.
ChemInform Abstract: Photoinduced Intramolecular Cyclization of o‐Ethenylaryl Isocyanides with Organic Disulfides Mediated by Diphenyl Ditelluride.
Authors: Mitamura Takenori , Iwata Kimiyo , Ogawa Akiya
Published: August 2011

Irradiation of isocyanides of type (I) with diaryl disulfides in the presence of diphenyl ditelluride results in formation of bisthiolated indole derivatives.
ChemInform Abstract: Fritsch—Buttenberg—Wiechell Rearrangement to Alkynes from gem‐Dihaloalkenes with Lanthanum Metal.
Authors: Umeda Rui , Yuasa Takumi , Anahara Namika , Nishiyama Yutaka
Published: August 2011

The first Fritsch—Buttenberg—Wiechell rearrangement of gem‐dihaloalkenes towards alkynes mediated by lanthanum metal and substoichiometric amounts of iodine is presented.
ChemInform Abstract: Pyrazinium Salts as Efficient Organocatalysts of Mild Oxidations with Hydrogen Peroxide.
Authors: Menova Petra , Kafka Frantisek , Dvorakova Hana , Gunnoo Smita , Sanda Miloslav , Cibulka Radek
Published: August 2011

It is crucial that the pyrazinium salt bears an electron‐withdrawing group.
ChemInform Abstract: Nucleophilic Fluorination of Alkynyliodonium Salts by Alkali Metal Fluorides: Access to Fluorovinylic Compounds.
Authors: Nguyen Thi‐Huu , Abarbri Mohamed , Guilloteau Denis , Mavel Sylvie , Emond Patrick
Published: August 2011

Fluorination of alkynyl(phenyl)iodonium salts (I) proceeds smoothly with CsF to give the corresponding β‐fluoroalkenyliodonium salts (II) with excellent regio‐ and stereoselectivity.
ChemInform Abstract: An Efficient and Clean CuI‐Catalyzed Chalcogenylation of Aromatic Azaheterocycles with Dichalcogenides.
Authors: Li Zhen , Hong Jianquan , Zhou Xigeng
Published: August 2011

Diaryl disulfides, dialkyl disulfides, or diphenyl diselenide are employed under optimized conditions for the title reaction of imidazopyridines, imidazopyrimidines, indoles, and pyrrolo[2,3‐b]pyridines.
ChemInform Abstract: Palladium‐Catalyzed Hydrofunctionalization of Vinyl Phenol Derivatives with Heteroaromatics.
Authors: Pathak Tejas P. , Sigman Matthew S.
Published: August 2011

Vinyl phenols efficiently react with a wide range of heteroaromatics in the presence of KHCO3, BuCl, Pd2dba3/ PCy3 to afford hydrofunctionalized products like (III), (V), and (VII).
ChemInform Abstract: Negishi Cross‐Coupling of Secondary Alkylzinc Halides with Aryl/Heteroaryl Halides Using Pd—PEPPSI‐IPent.
Authors: Calimsiz Selcuk , Organ Michael G.
Published: August 2011

The highly‐hindered Ipent ligand significantly reduces the production of isomeric coupling products due to β‐hydride elimination/migratory insertion of the organometallic reagent.
ChemInform Abstract: Free‐Radical Carboalkynylation and Carboalkenylation of Olefins.
Authors: Liautard Virginie , Robert Frederic , Landais Yannick
Published: August 2011

The title reactions provide new approaches to alkyne esters of type (XI)/(XIII) and functionalized alkenes like (IV), (VII), (IX), (XIV) and (XVI).
ChemInform Abstract: Regioselective Hydroformylation of Allylic Alcohols.
Authors: Lightburn Thomas E. , De Paolis Omar A. , Cheng Ka H. , Tan Kian L.
Published: August 2011

In the presence of Rh(acac)(CO)2 and the phosphine (POS), allylic alcohols are found to undergo regioselective hydroformylation.
ChemInform Abstract: Asymmetric Synthesis of cis‐2‐Aminocyclopropanols by Intramolecular Mannich Addition of Silyloxy Benzyl Carbanions.
Authors: Liu Bo , Lu Chong‐Dao
Published: August 2011

The process provides an efficient and highly stereoselective method to prepare protected cis‐2‐aminocyclopropanols.
ChemInform Abstract: Palladium‐Catalyzed C—H Perfluoroalkylation of Arenes.
Authors: Loy Rebecca N. , Sanford Melanie S.
Published: August 2011

A new and facile method for the perfluoroalkylation of arenes is reported.
ChemInform Abstract: Photoacid Generators (PAGs) Based on N‐Acyl‐N‐phenylhydroxylamines for Carboxylic and Sulfonic Acids.
Authors: Ikbal Mohammed , Jana Avijit , Singh N. D. Pradeep , Banerjee Rakesh , Dhara Dibakar
Published: August 2011

By irradiation of substrates such as (III) or (VI), a cleavage of the N—O bond occurs to give the corresponding carboxylic acids.
ChemInform Abstract: Copper‐Catalyzed Enantioselective Propargylic Amination of Nonaromatic Propargylic Esters with Amines.
Authors: Yoshida Akiko , Hattori Gaku , Miyake Yoshihiro , Nishibayashi Yoshiaki
Published: August 2011

The presence of the ester as a leaving group is crucial.
ChemInform Abstract: A Dual‐Catalysis/Anion‐Binding Approach to the Kinetic Resolution of Allylic Amines.
Authors: Klauber Eric G. , Mittal Nisha , Shah Tejas K. , Seidel Daniel
Published: August 2011

The approach utilizes the use of an achiral nucleophylic catalyst (PPY or DMAP) and a hydrogen‐bonding chiral catalyst (CTU).
ChemInform Abstract: Bis‐Sulfamyl Imines: Potent Substrates for Asymmetric Additions of Arylboroxines under Rhodium Catalysis.
Authors: Crampton Rosemary , Woodward Simon , Fox Martin
Published: August 2011

The reaction proceeds with nearly complete enantioselectivities.
ChemInform Abstract: Ruthenium‐Catalyzed Direct Amination of Alcohols with Tertiary Amines.
Authors: Luo Jiaying , Wu Mingyue , Xiao Fuhong , Deng Guojun
Published: August 2011

Primary benzylic alcohols react with NBu3 to produce bisalkylated derivatives.
ChemInform Abstract: Stereoselective Coupling Reaction of Dimethylzinc and Alkyne Toward Nickelacycles.
Authors: Mori Takamichi , Nakamura Toshiyuki , Kimura Masanari
Published: August 2011

The three‐component reaction of vinyloxirane, alkynes and ZnMe2 leads to 2,5‐heptadienyl alcohols in high yields and moderate E/Z‐selectivities.
ChemInform Abstract: Synthesis and Evaluation of N‐(α‐Benzamido cinnamoyl) Aryl Hydrazone Derivatives for Antiinflammatory and Antioxidant Activities.
Authors: Rajitha G. , Saideepa N. , Praneetha P.
Published: August 2011

Title compounds (IV) are screened for their antiinflammatory and antioxidant activities.
ChemInform Abstract: “Greener” Friedel—Crafts Acylations: A Metal‐ and Halogen‐Free Methodology.
Authors: Wilkinson Mark C.
Published: August 2011

Methanesulfonic anhydride promotes the reaction of a wide range of carboxylic acids tolerating steric hindrance and many functional groups.
ChemInform Abstract: A Practical and Convenient Fluorination of 1,3‐Dicarbonyl Compounds Using Aqueous HF in the Presence of Iodosylbenzene.
Authors: Kitamura Tsugio , Kuriki Satoshi , Morshed Mohammad Hasan , Hori Yuji
Published: August 2011

The reaction is applied to a variety of diketones, ketoesters and ketoamides.
ChemInform Abstract: Development of a General and Practical Iron Nitrate/TEMPO‐Catalyzed Aerobic Oxidation of Alcohols to Aldehydes/Ketones: Catalysis with Table Salt.
Authors: Ma Shengming , et al. et al.
Published: August 2011

The reaction is applied to a wide range of allylic, allenic and propargylic primary and secondary alcohols to provide the corresponding aldehydes and ketones.The reactions can be scaled up.
ChemInform Abstract: One‐Pot Metal‐Free Syntheses of Acetophenones from Styrenes Through Aerobic Photooxidation and Deiodination with Iodine.
Authors: Nobuta Tomoya , Hirashima Shin‐ichi , Tada Norihiro , Miura Tsuyoshi , Itoh Akichika
Published: August 2011

A new and facile approach to acetophenones and related compounds like (IV) is given.
ChemInform Abstract: Ligand‐Free Ag(I)‐Catalyzed Carboxylation of Terminal Alkynes with CO2.
Authors: Zhang Xiao , Zhang Wen‐Zhen , Ren Xiang , Zhang Lin‐Lin , Lu Xiao‐Bing
Published: August 2011

The reaction proceeds with low loading of AgI without ligand and tolerates a wide range of functionalities in the aromatic and aliphatic alkynes.
ChemInform Abstract: Novel 2,2,6,6‐Tetramethylpiperidine 1‐Oxyl—Iodobenzene Hybrid Catalyst for Oxidation of Primary Alcohols to Carboxylic Acids.
Authors: Yakura Takayuki , Ozono Ayaka
Published: August 2011

A variety of primary and secondary alcohols is oxidized to carboxylic acids with mostly small amounts of aldehydes using the hybrid catalysts (I) and large excess of peracetic acid.
ChemInform Abstract: Rhodium‐Catalyzed Selective Olefination of Arene Esters via C—H Bond Activation.
Authors: Park Sae Hume , Kim Ji Young , Chang Sukbok
Published: August 2011

Selective ortho‐olefination of the aromatic esters tolerates a broad spectrum of functionalities in both reaction partners.
ChemInform Abstract: Facile Amide Bond Formation from Carboxylic Acids and Isocyanates.
Authors: Sasaki Kaname , Crich David
Published: August 2011

The reaction is compatible with a wide range of electron‐deficient aryl isocyanates and aliphatic and aromatic acids and tolerates the presence of free hydroxyl groups, Fmoc‐ and Boc‐protected amino acids, heteroaromatic isocyanates and heteroaromatic acids.
ChemInform Abstract: Multicomponent Mannich Reactions with Boron Enolates Derived from Diazo Esters and 9‐BBN.
Authors: Luan Yi , Schaus Scott E.
Published: August 2011

The reaction leads to isocyanate Mannich products, which can be trapped in situ by alcohols.
ChemInform Abstract: NHC/Iron Cooperative Catalysis: Aerobic Oxidative Esterification of Aldehydes with Phenols.
Authors: Reddy R. Sudarshan , Rosa Joao N. , Veiros Luis F. , Caddick Stephen , Gois Pedro M. P.
Published: August 2011

Title Fe—NHC‐catalyzed oxidative esterification of phenols proceeds with a wide range of aromatic (I), (IV) as well as cinnamic aldehydes (VII) to give the corresponding benzoates and cinnamates in good yields.
ChemInform Abstract: Highly Stereoselective Synthesis of 1,2‐Diorganothio‐1‐alkenes via Hydrothiolation of Alkynyl Sulfides Catalyzed by Cesium Hydroxide.
Authors: Tan Ping , Yin Xianhong , Yu Aihe , Qiu Renhua , Peng Lifen , Xu Xinhua , Zhao Yalei , Tang Ruiren
Published: August 2011

The title reaction affords exclusively (Z)‐1,2‐diorganothio‐1‐alkenes (III) in excellent yields and independent of a symmetrical or unsymmetrical substitution pattern.
ChemInform Abstract: Nickel‐Catalyzed Selective Defluorination to Generate Partially Fluorinated Biaryls.
Authors: Sun Alex D. , Love Jennifer A.
Published: August 2011

Ni‐catalyzed treatment of polyfluoroarenes with aromatic borates, boronic acids and esters provides a mild and efficient approach to a wide range of fluorinated biaryls.
ChemInform Abstract: Weinreb Amide Based Building Blocks for Convenient Access to 1,1‐Diarylethenes and Isocombretastatin Analogues.
Authors: Balasubramaniam Sivaraman , Kommidi Harikrishna , Aidhen Indrapal Singh
Published: August 2011

Based on Weinreb amides of type (I) a straightforward strategy for the synthesis of 1,1‐diarylethenes (VII) is developed.
ChemInform Abstract: Iron‐Catalyzed Stereospecific Olefin Synthesis by Direct Coupling of Alcohols and Alkenes with Alcohols.
Authors: Liu Zhong‐Quan , Zhang Yuexia , Zhao Lixing , Li Zejiang , Wang Jiantao , Li Huajie , Wu Long‐Min
Published: August 2011

Direct coupling of benzylic alcohols with alkenes or of 2 different benzylic alcohols leads to the same type of products with complete (E)‐selectivity.
ChemInform Abstract: Catalytic Asymmetric Aza‐Darzens Reaction with a Vaulted Biphenanthrol Magnesium Phosphate Salt.
Authors: Larson Shawn E. , Li Guilong , Rowland Gerald B. , Junge Denise , Huang Rongcai , Woodcock H. Lee , Antilla Jon C.
Published: August 2011

The reaction is applied to a variety of aromatic imines and tolerates functional groups such as halides or methoxy.
ChemInform Abstract: Stereoselective Synthesis of β‐(Hydroxymethylaryl/alkyl) ‐α‐methylene‐γ‐butyrolactones.
Authors: Hodgson David M. , Talbot Eric P. A. , Clark Barry P.
Published: August 2011

Treatment of furanone (I) with aldehydes in the presence of Zn or CrCl3/ Mn/ TmsCl allows convenient and stereoselective access to title lactones like (III) and (VII).
ChemInform Abstract: Multisubstituted α,β‐Unsaturated γ‐Lactones from 1‐Chlorovinyl p‐Tolyl Sulfoxides and tert‐Butyl Carboxylates Using Pummerer‐Type Cyclization as the Key Reaction.
Authors: Katae Takashi , Sugiyama Shimpei , Satoh Tsuyoshi
Published: August 2011

A procedure for the synthesis of differently substituted γ‐butenolides is developed utilizing Pummerer‐type cyclization of 4‐chloro‐4‐(p‐tolylsulfinyl)butyric acid esters, which are prepared from aldehyde derived 1‐chlorovinyl p‐tolyl sulfoxides, as the key reaction.
ChemInform Abstract: Stereoselective Routes to Aryl Substituted γ‐Butyrolactones and Their Application Towards the Synthesis of Highly Oxidized Furanocembranoids.
Authors: Macabeo Allan Patrick G. , Kreuzer Andreas , Reiser Oliver
Published: August 2011

Reaction of cyclopropanecarbaldehyde (I) with aryltitanium reagents, followed by tin‐catalyzed retro‐aldol—acetalization—lactonization sequence provides access towards γ‐aryllactones, e.g. (IV)/(V), with moderate to high diastereoselectivity.
ChemInform Abstract: Formation of Polycyclic Lactones Through a Ruthenium‐Catalyzed Ring‐Closing Metathesis/Hetero‐Pauson—Khand Reaction Sequence.
Authors: Finnegan David F. , Snapper Marc L.
Published: August 2011

The outcome is dependent on the tether length of the dienone and the nature of the substituent adjacent to the keto group.
ChemInform Abstract: Base‐Mediated Direct Arylation of Pyrrole Derivatives.
Authors: Vakuliuk Olena , Koszarna Beata , Gryko Daniel T.
Published: August 2011

The reaction is applied to a wide range of aryl iodides and heterocyclic or benzene substrates.
ChemInform Abstract: Synthesis and Antitumor Activity of Novel N′‐(2‐Benzylthiobenzenesulfonyl)‐1H‐pyrazole‐1‐amidine Derivatives.
Authors: Slawinski Jaroslaw , Brozewicz Kamil , Fruzinski Andrzej , Glowka Marek
Published: August 2011

14 Title compounds of type (VIII) or (X) are prepared.
ChemInform Abstract: Synthesis of 3‐Amino‐4‐fluoropyrazoles.
Authors: Surmont Riccardo , Verniest Guido , De Schrijver Mathias , Thuring Jan Willem , ten Holte Peter , Deroose Frederik , De Kimpe Norbert
Published: August 2011

A new approach to biologically important title pyrazoles is reported.
ChemInform Abstract: Gold(I)‐Catalyzed Intramolecular Hydroamination of N‐Allylic N′‐Arylureas to Form Imidazolidin‐2‐ones.
Authors: Li Hao , Song Feijie , Widenhoefer Ross A.
Published: August 2011

5‐exo‐Hydroamination of N‐allylic N′‐aryl ureas leads to the target imidazolidin‐2‐ones in excellent yields [cf.
ChemInform Abstract: Microwave‐Assisted Synthesis of 3,5‐Disubstituted Thiohydantoins Using Functional Ionic Liquid as Soluble Support.
Authors: Zhuo Chen , Xian Dong , Hui Xie , Mei Li
Published: August 2011

A new approach to the synthesis of 3,5‐disubstituted thiohydantoins, which uses a functionalized ionic liquid as soluble support, is described.
ChemInform Abstract: Multifunctional Chiral Phosphines‐Catalyzed Highly Diastereoselective and Enantioselective Substitution of Morita—Baylis—Hillman Adducts with Oxazolones.
Authors: Yang Yuan‐Liang , Pei Cheng‐Kui , Shi Min
Published: August 2011

A bifunctional chiral binaphthyl‐derived phosphine—thiourea efficiently catalyzes the allylic substitution of Morita—Baylis—Hillman adducts (I) with oxazolones (II).
ChemInform Abstract: An Efficient Synthesis of 2‐Substituted Benzoxazoles via RuCl3·3H2O Catalyzed Tandem Reactions in Ionic Liquid.
Authors: Fan Xuesen , He Yan , Wang Yangyang , Zhang Xinying , Wang Jianji
Published: August 2011

The synthetic strategy is also applied to the preparation of hitherto unreported 5‐(benzoxazol‐2‐yl)‐2′‐deoxyuridines (V).
ChemInform Abstract: A Fast and Highly Efficient Protocol for Reductive Amination of Aromatic Aldehydes Using NaBH4 and Isoxazole Amines in an Ionic Liquid Medium.
Authors: Eligeti Rajanarendar , Atthunuri Siva Rami Reddy , Samala Raju , Shaik Firoz Pasha , Kundur Govardhan Reddy
Published: August 2011

The Broensted acidic ionic liquid acts as both solvent and catalyst.
ChemInform Abstract: Synthesis of Various Substituted Spiro‐ and Bicyclethiazolidine‐2‐thiones by a Multicomponent Reaction and Biological Evaluation in vitro.
Authors: Wang Xiao‐Juan , Xu Hai‐Wei , Guo Lin‐Lin , Zhang En , Chen Guang‐Wei , Guo Xiao , Liu Hong‐Min
Published: August 2011

10 Title compounds of type (IV) and 8 of type (VI) and (VIII) are prepared and tested in vitro for their inhibitory effects on various human tumors.
ChemInform Abstract: An Efficient Synthesis of Dihydro‐ and Tetrahydropyrans via Oxonium—Ene Cyclization Reaction.
Authors: Bondalapati Somasekhar , Reddy Udagandla C. , Saha Pipas , Saikia Anil K.
Published: August 2011

The Lewis acid‐mediated cyclization of homoallylic alcohols with a wide variety of aromatic and aliphatic aldehydes provides access to dihydropyrans and/or tetrahydropyrans.