bluuebunny/crossref_metadata_2025 huggingface dataset:
Study of a global auroral Pc5 pulsation event with concurrent ULF waves
Authors: Liou Kan , Sibeck David G.
Published: July 2014

We present results from a study of concurrent, periodic variations in auroral luminosity (auroral pulsations) and in magnetospheric plasma/magnetic field data. This event occurred on 10 March 2010 from ~13 to 17 UT during an extended southward interplanetary magnetic field and was probably triggered by a slow shock. The auroral pulsations, as measured by the Ultraviolet Imager on board the Polar satellite, were long lasting (~2.5 h), monochromatic (~2.5 mHz), large scale, and appeared in the night sector auroral zone with a latitudinal extent comparable to the latitudinal width of the oval. There was no phase shift between the auroral pulsations observed at different local times, indicating a stationary structure. Particle data from the Defense Meteorological Satellite Program Special Sensor Precipitating Electron and Ion Spectrometer indicate that the pulsations were diffuse originating from the central plasma sheet. During this time, Geotail was in the dawn sector plasma sheet and observed a ULF wave with the same frequency as the auroral pulsations last ~35 min. The ULF wave had large radial and compressional components, and the plasma density and total magnetic field were anticorrelated. These two observations strongly suggest that the observed ULF wave was associated with an standing ULF poloidal mode. The wave compressional component may be able to change the loss cone, resulting in periodic auroral precipitating.
Evaluation of wind and temperature profiles from ECMWF analysis on two hemispheres using volcanic infrasound
Authors: Assink J. D. , Pichon A. Le , Blanc E. , Kallel M. , Khemiri L.
Published: July 2014

In this paper, we evaluate vertical wind and temperature profiles that are produced by the European Centre for Medium‐Range Weather Forecasts (ECMWF) atmospheric analysis. The evaluation is carried out on both hemispheres: we make use of stratospheric infrasound arrivals from Mount Etna (37°N) and Mount Yasur (22°S). The near‐continuous, high activity of both volcanoes permits the study of stratospheric propagation along well‐defined paths with a time resolution ranging from hours to multiple years. Infrasound observables are compared to theoretical estimates obtained from acoustic propagation modeling using the ECMWF analysis. While a first‐order agreement is found for both hemispheres, we report on significant discrepancies around some of the equinox periods and other intervals during which the atmosphere is in a state of transition and dynamical oscillations of the atmosphere dominate over the general circulation. We present an inversion study in which we make use of measured trace velocity estimates to estimate first‐order effective sound speed model updates in a Bayesian framework. Deviations from the a priori models around the stratopause up to 10% (≈ 30 m s−1) are estimated. Such updates are in line with the results from comparisons between ECMWF analysis and observations from lidar and microwave Doppler spectroradiometer facilities that were colocated during the course of the 2012–2013 Atmospheric dynamics Research and InfraStructure in Europe (ARISE) measurement campaign.
Extension of LMS stability condition over a wide set of signals
Authors: Bismor Dariusz
Published: July 2014

A sufficient condition for least mean squares (LMS) algorithm stability with a small set of assumptions is derived in this paper. The derivation is not, contrary to the majority of currently known conditions, based on the independence assumption or other statistic properties of the input signals. Moreover, it does not make use of the small‐step‐size assumption, neither does it assume the input signals are stationary. Instead, it uses a theory of discrete systems and properties of a discrete state‐space matrix. Therefore, the result can be applied to a wide set of signals, including deterministic and nonstationary signals. The location of all eigenvalues of the matrix responsible for the LMS algorithm stability has been calculated. Simulation experiments, where the step size reaches a couple of hundreds without loss of stability, are shown to support the theory. On the other hand, simulation where the calculations based on the small‐step‐size theory provide a too large estimation of the upper bound for the step size, while the new condition gives a proper solution, is also presented. Therefore, the new condition may be used in cases where fast adaptation is necessary and when the independence theory or the small‐step‐size assumptions do not hold. Copyright © 2014 John Wiley & Sons, Ltd.
A Review of Three‐Dimensional Resistive Switching Cross‐Bar Array Memories from the Integration and Materials Property Points of View
Authors: Seok Jun Yeong , Song Seul Ji , Yoon Jung Ho , Yoon Kyung Jean , Park Tae Hyung , Kwon Dae Eun , Lim Hyungkwang , Kim Gun Hwan , Jeong Doo Seok , Hwang Cheol Seong
Published: July 2014

Issues in the circuitry, integration, and material properties of the two‐dimensional (2D) and three‐dimensional (3D) crossbar array (CBA)‐type resistance switching memories are described. Two important quantitative guidelines for the memory integration are provided with respect to the required numbers of signal wires and sneak current paths. The advantage of 3D CBAs over 2D CBAs (i.e., the decrease in effect memory cell size) can be exploited only under certain limited conditions due to the increased area and layout complexity of the periphery circuits. The sneak current problem can be mitigated by the adoption of different voltage application schemes and various selection devices. These have critical correlations, however, and depend on the involved types of resistance switching memory. The problem is quantitatively dealt with using the generalized equation for the overall resistance of the parasitic current paths. Atomic layer deposition is discussed in detail as the most feasible fabrication process of 3D CBAs because it can provide the device with the necessary conformality and atomic‐level accuracy in thickness control. Other subsidiary issues related to the line resistance, maximum available current, and fabrication technologies are also reviewed. Finally, a summary and outlook on various other applications of 3D CBAs are provided.
Equivalence and hermiticity of Dirac Hamiltonians in the Kerr gravitational field
Authors: Gorbatenko Mikhail V. , Neznamov Vasily P.
Published: July 2014

In the paper, for the Kerr field, we prove that Chandrasekhar's Dirac Hamiltonian and the self‐adjoint Hamiltonian with a flat scalar product of the wave functions are physically equivalent. Operators of transformation of Chandrasekhar's Hamiltonian and wave functions to the η representation with a flat scalar product are defined explicitly. If the domain of the wave functions of Dirac's equation in the Kerr field is bounded by two‐dimensional surfaces of revolution around the z axis, Chandrasekhar's Hamiltonian and the self‐adjoint Hamiltonian in the η representation are Hermitian with equality of the scalar products, .

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Novel isoxazoline ligand with ferrocene backbone: preparation and application in Heck reaction with water as solvent
Authors: Yu Shuyan , Zhang Zhiqin , Yu Zhiyu , Shang Yongjia
Published: July 2014

Two novel isoxazoline N,N‐bidentate ligands with ferrocene backbone have been synthesized and employed for the palladium‐catalyzed Heck coupling reaction. Among them, 1,3‐bis‐(5‐ferrocenylisoxazoline‐3‐yl)benzene was found to be thermally stable and a highly effective ligand for Heck coupling reaction in neat water without N2 protection, affording the desired coupling products in good to excellent yield with high diastereoselectivity. The developed catalytic system was also well workable for 1,2‐disubstituted alkenes, which were less involved in the Heck reaction for its larger steric hindrance. Copyright © 2014 John Wiley & Sons, Ltd.
Multi‐point monitoring of cross‐linking reactions
Authors: Machavaram Venkata Rajanikanth , Wang Liwei , Pandita Surya Darma , Hellmann Sebastian , Bogonez Francisco Nieves , Fernando Gerard Franklyn
Published: July 2014

The feasibility of deploying optical fiber sensors to obtain qualitative and quantitative information on the cross‐linking characteristics of thermosetting resin systems has been demonstrated by a number of researchers. This article is concerned with the demonstration of a low‐cost fiber‐optic Fresnel sensor system for monitoring the cross‐linking reactions at multiple locations. Cross‐linking reactions can be influenced by a number of parameters including the stoichiometry of the resin and hardener, and the heat‐transfer rates in and out of the preform as a function of the cross‐section of the preform. In situations where there is a variation in the thickness of the preform or when large components are processed, a facility to monitor the cross‐linking reactions at multiple locations will be valuable because the rate and extent of the cross‐linking can be inferred. In this article, six Fresnel sensors were immersed in individual vials containing an epoxy/amine resin system and processed (cross‐linked) in an air‐circulating oven. One additional vial with a Fresnel sensor immersed in the neat epoxy resin (no hardener) was co‐located in the oven to enable the effect of temperature to be monitored. The feasibility of using the multiplexed Fresnel sensors for cure monitoring was demonstrated successfully. The sensors in the post‐cross‐linked samples were used to study the effects of heating and cooling cycles. The feasibility of detecting the glass transition temperature using the Fresnel sensor is discussed along with the factors that give rise to variability in the output Fresnel signals. © 2014 The Authors. Journal of Applied Polymer Science Published by Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 41088.
Flame‐retarding mechanism of organically modified montmorillonite and phosphorous‐Nitrogen flame retardants for the preparation of a halogen‐free, flame‐retarding thermoplastic poly(ester ether) elastomer
Authors: Zhong Yuhua , Wu Wei , Lin Xingqing , Li Maolin
Published: July 2014

In this study, thermoplastic poly(ester ether) elastomer (TPEE) nanocomposites with phosphorus–nitrogen (P–N) flame retardants and montmorillonite (MMT) were prepared by melt blending. The fire resistance of the nanocomposites was analyzed by limiting oxygen index (LOI) and vertical burning (UL 94) tests. The results show that the addition of the P–N flame retardants increased the LOI of the material from 17.3 to 27%. However, TPEE containing P–N flame retardants only obtained a UL 94 V‐2 ranking; this resulted in a flame dripping phenomenon. On the other hand, TPEE containing the P–N flame retardant and organically modified montmorillonite (o‐MMT) achieved better thermal stability and good flame retardancy; this was ascribed to its partially intercalated structure. The synergistic effect and synergism were investigated by Fourier transform infrared spectroscopy and thermogravimetry. The introduction of o‐MMT decreased the inhibition action of the P–N flame retardant and increased the amount of residues. The catalytic decomposition effect of MMT and the barrier effect of the layer silicates are discussed in this article. The residues after heating in the muffle furnace were analyzed by scanning electron microscopy, energy‐dispersive X‐ray spectroscopy and laser Raman spectroscopy. It was shown that the intercalated layer silicate structure facilitated the crosslinking interaction and promoted the formation of additional carbonaceous char residues in the formation of the compact, dense, folded‐structure surface char. The combination of the P–N flame retardant and o‐MMT in TPEE resulted in a better thermal stability and fire resistance because of the synergistic effect of the mixture. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 41094.
Synthesis and characterization of advance PA6‐b‐PDMS multiblock copolymers
Authors: Zhang Yanyan , Fan Hong , Li Bo‐Geng
Published: July 2014

Advance polyamide‐6‐b‐polydimethylsiloxane (PA6‐b‐PDMS) multiblock copolymers were first synthesized via the polymerization in bulk. Binary carboxyl terminated PA6 was served as the hard segment and PDMS modified with hexamethylene diisocyanate (PDMS‐NCO) was the soft segment. A series of PA6‐b‐PDMS copolymers based on different content and length of soft segments were obtained. Interestingly, Differential scanning calorimetry (DSC) studies revealed no obvious change in melting temperature after introducing PDMS segments to copolymers. The high melting temperatures indicated these copolymers possess potential applications in automotive industry that require high continuous use temperatures. DSC and transmission electron microscopy studies both demonstrated increasing the length and the content of the soft segment contributed to increasing of the degree of microphase separation. However, the improvement of thermal stability resulting from PDMS segments was also observed by thermo gravimetric analysis. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci.2014,131, 41114.
Calendered linear low‐density polyethylene consolidated meat and bone meal composites
Authors: Lukubira Sam , Ogale Amod
Published: July 2014

Bioplastics produced from meat and bone meal (MBM) suffer from rapid and drastic mechanical property deterioration because of their hydrophilic nature. This study investigates mechanical and water stability of composites produced from introduction of a minor component of a synthetic polyethylene as a binder phase to consolidate MBM. The milled and sieved MBM was compounded with 5–60 wt % linear low‐density polyethylene (LLDPE) and formed into composite sheets by calendering, which is an industrially relevant process. Results indicated that a minimum of 15 wt % LLDPE content was required to form a nominally continuous binder phase that allowed for good processability and environment stability of the composites. As expected, the water vapor permeability (WVP) and water absorption characteristics of the composites were intermediate between those of MBM and LLDPE. Sheets containing 15 wt % LLDPE absorbed up to 35 wt % water. Composites tested after being soaked in water showed an initial decrease in TS of about 30% for the first hour but then remained fairly unchanged in the next 72 hours, confirming their moderate environment stability. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 41145.
Synthesis, Cytotoxicity, Docking Study, and Tubulin Polymerization Inhibitory Activity of Novel 1‐(3,4‐Dimethoxyphenyl)‐5‐(3,4,5‐trimethoxyphenyl)‐1H‐1,2,4‐triazole‐3‐carboxanilides
Authors: Aly Omar M. , Beshr Eman A. , Maklad Raed M. , Mustafa Muhamad , Gamal‐Eldeen Amira M.
Published: July 2014

A series of novel 1‐(3,4‐methoxyphenyl)‐5‐(3,4,5‐trimethoxyphenyl)‐1H‐1,2,4‐triazole‐3‐carboxylic acid derivatives (4a–n) were synthesized and evaluated for their in vitro cytotoxic activity against the growth of four different human cell lines (hepatocarcinoma HepG2, breast adenocarcinoma MCF‐7, colon carcinoma DLD‐1, and leukemia HL‐60). The anilides of m‐anisidine 4e, o‐anisidine 4f, and 3,5‐difluoroaniline 4l demonstrated best results on MCF‐7 cells and mean IC50 values of 7.79, 10.79, and 13.20 µM, respectively. The compounds produced a significant reduction in cellular microtubules at a concentration of 25 µg/mL, for microtubule loss. Molecular modeling studies involving compounds 4d, 4e, 4f, and 4l with the colchicine binding site of α,β‐tubulin revealed hydrogen bonding and hydrophobic interactions with several amino acids in the colchicine binding site of β‐tubulin.
Two‐step chromatography purification of IgGs possessing sialidase activity from human blood serum
Authors: Kit Yury , Bilyy Rostyslav , Korniy Nataliya , Tomin Andriy , Chop'yak Valentyna , Tolstyak Yaroslav , Antonyuk Volodymyr , Stoika Rostyslav
Published: July 2014

Sialation of cell surface is known to be tightly connected with tumorigenicity, invasiveness, metastatic potential and clearance of aged cells, while sialation of immunoglobulin G (IgG) molecules determines their anti‐inflammatory properties. Recently, we have found for the first time IgG‐antibodies possessing sialidase‐like activity (sialylic abzyme) in blood serum of multiple myeloma and systemic lupus erythematosis patients. This abzyme was detected in a pool of IgGs purified by a typical procedure including immunoglobulin's precipitation with ammonium sulfate and following chromatography on protein G–Sepharose column. Here we describe a novel matrix for affinity purification of sialylic abzyme that is based on using bovine submandibular gland mucin conjugated to Sepharose matrix (mucin–Sepharose). This matrix preferentially binds sialidase‐like IgGs from a pool of sialidase‐active fraction of proteins precipitated with 50% ammonium sulfate from blood serum of the systemic lupus erythematosis patients. That allowed us to develop a new scheme of double‐step chromatography purification of sialidase‐like IgGs from human blood serum.Copyright © 2014 John Wiley & Sons, Ltd.
The Impact of Corporate Environmental Violation on Shareholders' Wealth: a Perspective Taken from Media Coverage
Authors: Xu X. D. , Zeng S. X. , Zou H. L. , Shi Jonathan J.
Published: July 2014

This study provides empirical evidence of the way in which media coverage of corporate environmental violation events affects shareholders' wealth due to stock market reactions. Data relating to the media coverage of the environmental violations of 173 publically traded companies in China, gathered using web crawler technology, were analyzed through multi‐dimensional variables with the purpose of examining the impact of media coverage on stock market reactions in terms of cumulative abnormal return (CAR) under different event windows based on the methodology of event study. The variables include the intensity of media coverage, media information sources, disclosure mode, media newsworthiness, violation entity, whether the company is punished by the government, whether the company makes a clarification and whether the company is ISO 14001 certified. The results obtained reveal that media coverage affects the market values of the event companies to some extent, and that those companies that attract high levels of media attention generally see greater losses in their shareholders' wealth. Copyright © 2014 John Wiley & Sons, Ltd and ERP Environment.
Corporate Environmental Initiatives in Small and Medium Sized Enterprises and Their Outcomes: A Longitudinal Study
Authors: Madsen Henning , Ulhøi John P.
Published: July 2014

The impact from corporate business activities on the natural environment and society at large has been in focus for quite some time. The focus has often been on corporate environmental sustainability initiatives reflecting industry's response to concerns expressed by key stakeholders as well as the potential influence on the bottom line and the competitive situation. Much less investigated is the extent to which management itself perceives that corporate environmental initiatives actually lead to positive results. This is the very focus of this research, which is based on data collected by identical surveys of industrial companies in Denmark over a number of years. The results indicate a slightly increasing involvement over time, but also that the level of results achieved is lower than the level of initiatives taken. That is, the reactive attitude reported previously still seems to be prevailing. The results also seem to indicate that the size of the company may have a negative influence in some situations, since smaller companies seems to be better at achieving results compared with medium sized companies. Copyright © 2014 John Wiley & Sons, Ltd and ERP Environment
Primary squamous cell carcinomas in the thyroid gland: an individual participant data meta‐analysis
Authors: Cho Jae Keun , Woo Seung‐Hoon , Park Junoh , Kim Min‐Ji , Jeong Han‐Sin
Published: July 2014

Primary squamous cell carcinomas arising from the thyroid gland (SCCTh) is extremely rare diseases, which have never been fully studied. Thus, we performed a systematic review and individual participant data meta‐analysis of published SCCTh cases, to understand the clinical characteristics and to identify the prognostic factors of primary SCCTh. A literature search was conducted within Medline, EMBASE, Cochrane library databases and KoreaMed using the following Medical Subject Headings (MeSH) keywords: “primary,” “squamous,” “carcinoma,” “cancer,” and “thyroid.” Eighty‐four patients' individual data from 39 articles and five patients' data in our institute were selected for analysis (N = 89). The mean age at diagnosis was 63.0 years (range, 24–90) and female preponderance (M:F = 1:2) was noted. The commonest complaint was the anterior neck mass, followed by dyspnea or dysphagia, and extension to the adjacent structure was found in 72%. The median survival was 9.0 months (95% CI, 6.0–23.0) and 3‐year survival rate (3YSR) was 37.6% by Kaplan–Meier method, but only 20.1% by a shared frailty model for adjusting heterogeneity. Complete resection (R0) of tumors was the only significant prognostic factor in multivariable analysis, and the benefit of adjuvant treatment was not proved. The prognosis of patients with SCCTh is very poor (20% in 3YSR), but complete resection of disease is correlated with improved survival. To achieve complete surgical eradication of tumors, early detection and accurate diagnosis should be emphasized.
Predicting audio step feedback for real walking in virtual environments
Authors: Zank Markus , Nescher Thomas , Kunz Andreas
Published: July 2014

When navigating in virtual environments by using real walking, the correct auditory step feedback is usually ignored, although this could give more information to the user about the ground he is walking on. One reason for this is time constraints that hinder a replay of a walking sound synchronous to the haptic step feedback when walking. In order to add a matching step feedback to virtual environments, this paper introduces a calibration‐free system, which can predict the occurrence time of a step‐down event based on an analysis of the user's gait. For detecting reliable characteristics of the gait, accelerometers and gyroscopes are used, which are mounted on the user's foot. Because the proposed system is capable of detecting the characteristic events in the foot's swing phase, it allows a prediction that gives enough time to replay sound synchronous to the haptic sensation of walking. In order to find the best prediction regarding prediction time and accuracy, data gathered in an experiment is analyzed regarding reliably occurring characteristics in the human gait. Based on this, a suitable prediction algorithm is proposed. Copyright © 2014 John Wiley & Sons, Ltd.
Influence of Caffeine on the Crystallization Behavior of Sugar
Authors: Selbmann Stefanie , Petersen Sandra , Ulrich Joachim
Published: July 2014

Factors such as high viscosity of sugar solutions or multicomponent systems with flavoring agents complicate the crystallization of sugar in the food industry. The influence of caffeine on the crystallization behavior of sugar solutions was tested. The determined parameters were solubility, metastable zone width, nucleation, crystal growth rate, and shape of crystals. For the metastable zone two different concentrations were tested. The crystal growth rate was determined at two temperatures as well as at two supersaturations. The results indicate that caffeine affects the crystal growth rate and metastable zone. The crystal growth rate is decreased and the saturation line as well as the nucleation line is shifted to lower temperatures caused by a thermodynamic effect.
Optimized Coating through Phase Separation in Tablets by Melt Crystallization
Authors: Abouzeid Ahmed , Petersen Sandra , Ulrich Joachim
Published: July 2014

The coating process is a crucial step in conventional industrial tablet production. Here, a simpler method to coat the tablets is realized by melt crystallization technology. Phase separation of the mixture components, which need to be eutectic, is investigated for lauric acid and ibuprofen. Use of a colored complex of lauric acid, the expected phase separation was visualized. Post‐production analyses confirmed the two different solidifying phases. Variation of certain parameters within the drop forming simulation experiment, to test their effects on the tablet geometry and phase separation, provided an important entry in the tablet coating formula. Cooling the crystallizing drops from the top and the bottom resulted in the generation of evenly coated tablets, a major goal in tablet production.
Fast Dispersible Cocoa Tablets: A Case Study of Freeze‐Casting Applied to Foods
Authors: Nguyen Phuong T. N. , Ulrich Joachim
Published: July 2014

A fast and easily dissolving/dispersible tablet is introduced as a new convenient dosage form to substitute fine powders. Cocoa was taken as a first potential food candidate to produce a fast dispersible tablet. The experimental setup of a successfully applied freeze‐casting process is presented. By controlling the temperature gradient and the freezing mode, two pore morphologies including needle‐columnar and planar‐lamellar structures were found. Sugar used as a binder dramatically improved the properties of the produced tablets. A fast‐dispersal cocoa tablet of 16 mm in diameter and 10 mm in height was obtained, with a dispersal time of less than 1 min and a crushing force higher than 34.5 N, i.e., a diametral tensile strength σt of 0.14 N mm−2. In other words, a tablet meeting the dissolution time and mechanical strength requirements for fast‐dispersal tablets was generated.
Covalent Grafting of Silatranes to Carbon Interfaces
Authors: Peureux Charles , Jouikov Viatcheslav
Published: July 2014

Covalent SiC grafting of a silatrane cage to a carbon‐based interface provides a truly conjugated benzyl‐type system in which the 3 c–4 e orbital of the silatrane interacts with the macroscopic π‐type substituent (graphite Csp2 network) through hyperconjugation. This process, studied by voltammetry, EIS, FTIR, SEM and DFT modeling, allows one to build carbon‐based conducting interfaces with electronically conjugated molecular extensions. Non‐conjugated covalent grafting of an alkyl silatrane moiety provides chemically stable functional interfaces that have good promise for electrochemically‐driven applications, for example, electrochemical spin‐writing.
ChemInform Abstract: Variation of the EuII Emission Wavelength by Substitution of Fluoride by Hydride in Fluorite‐Type Compounds EuHxF2‐x (0.20 ≤ x ≤ 0.67).
Authors: Kunkel Nathalie , Meijerink Andries , Kohlmann Holger
Published: July 2014

EuHxF2‐x is prepared by solid state reaction of EuF2 and EuH2 under H2 pressure (autoclave, 470 °C, 30 bar).
ChemInform Abstract: Enhanced Charge Transport in Amorphous Li2O2.
Authors: Tian Feng , Radin Maxwell D. , Siegel Donald J.
Published: July 2014

Amorphous Li2O2 is investigated using first‐principles “melt‐and‐quench” molecular dynamics and percolation theory.
ChemInform Abstract: Thermodynamic Characteristics of a New Phase Bi12.5Ho1.5ReO24.5 by Solution Calorimetry.
Authors: Matskevich Nata I. , Wolf Thomas , Adelmann Peter , Bryzgalova Anna N.
Published: July 2014

The title compound is synthesized by solid state reaction of a stoichiometric mixture of Bi2O3, NH4ReO4, and Ho2O3 (800 °C, 70 h).
ChemInform Abstract: Green Synthesis of Flower‐Like Bi2WO6 Microspheres as a Visible‐Light‐Driven Photocatalyst.
Authors: Zhou Yu‐Xue , Tong Ling , Zeng Xiang‐Hua , Chen Xiao‐Bing
Published: July 2014

Flower‐like Bi2WO6 microspheres are hydrothermally synthesized from an aqueous solution of Bi(NO3)3 and Na2WO4 (autoclave, 120 °C, 14 h) and characterized by XRD, SEM, TEM, and UV/VIS diffuse reflectance spectroscopy.
ChemInform Abstract: Hydrogenation Properties and Crystal Structure of YMgT4 (T: Co, Ni, Cu) Compounds.
Authors: Shtender V. V. , Denys R. V. , Paul‐Boncour V. , Riabov A. B. , Zavaliy I. Yu.
Published: July 2014

The title compounds are prepared by mechanical alloying of YM4 (M: Co, Ni, Cu; obtained by arc melting of the elements) and Mg powder followed by annealing under argon (Ta containers, 600—800 °C, 8 h).
ChemInform Abstract: Nd3Ge1.18In0.82 and Sm3Ge1.33In0.67 — New Ternary Indides with La3GeIn Type Structure.
Authors: Kravets Oksana , Nychyporuk Galyna , Muts Ihor , Hlukhyy Viktor , Poettgen Rainer , Zaremba Vasyl'
Published: July 2014

The new title compounds are prepared from the elements by arc‐melting and subsequent annealing at 870 K for 720 h.
ChemInform Abstract: Ternary Rare‐Earth Manganese Germanides RE3Mn2Ge3 (RE: Ce—Nd) and a Possible Oxygen‐Interstitial Derivative Nd4Mn2Ge5O0.6.
Authors: Oliynyk Anton O. , Djama‐Kayad Kadar , Mar Arthur
Published: July 2014

The title compounds are prepared by arc melting of the elements followed by annealing at 800 °C (7 d).
ChemInform Abstract: Multinuclear Cobalt(II)‐Containing Heteropolytungstates: Structure, Magnetism, and Electrochemistry.
Authors: Kortz Ulrich , et al. et al.
Published: July 2014

Tetrameric Co16‐containing heteropolytungstates Na32 [{Co4(OH)3PO4}4 (A‐α‐SiW9O34)4] ·78H2O (I) and Na30.5K1.5 [{Co4(OH)3PO4}4 (A‐α‐GeW9O34)4] ·116H2O (II) are prepared in 17% and 19% yield, resp., by reaction of trilacunary Keggin polyanions [A‐α‐XW9O34]10‐ (X: SiIV, GeIV) with CoCl2 and Na3PO4 in aqueous basic media under mild heating.
ChemInform Abstract: Mild Solvothermal Syntheses and Characterization of Layered Copper Thioantimonates(III) and Thioarsenate(III).
Authors: Zhang Chi , Ji Min , Ji Shou‐Hua , An Yong‐Lin
Published: July 2014

Rb2Cu2Sb2S5 (I), Cs2Cu2Sb2S5 (II), and Rb8Cu6As8S19 (III) are prepared by solvothermal reaction of Cu, Sb (or As2S3), S, and Rb2CO3 or Cs2CO3 in molar ratios of 8:8.2:37.5:5.2 for (I), 8:8.2:50:3.1 for (II), and 6.3:6.1:32.2:5.2 for (III) in diaminopropane and 50 wt.% MeOH/H2O (autoclave, 160 °C (145 °C for (III)), 5 d, yields of 36%, 32%, and 56% for (I), (II), and (III)).
ChemInform Abstract: Amine‐Catalyzed Asymmetric Cross‐Aldol Reactions Using Heterofunctionalized Acetaldehydes as Nucleophiles.
Authors: Kano Taichi , Sakamoto Ryu , Maruoka Keiji
Published: July 2014

Both syn‐ and anti‐difunctionalized compounds can be obtained from the same set of reactants by replacing the catalyst.
ChemInform Abstract: Bimetallic Catalysis in the Highly Enantioselective Ring—Opening Reactions of Aziridines.
Authors: Wu Bin , Gallucci Judith C. , Parquette Jon R. , RajanBabu T. V.
Published: July 2014

The applied catalyst is readily prepared from commercially available yttrium isopropoxides.
ChemInform Abstract: Straightforward Access to Cyclic Amines by Dinitriles Reduction.
Authors: Laval Stephane , Dayoub Wissam , Pehlivan Leyla , Metay Estelle , Favre‐Reguillon Alain , Delbrayelle Dominique , Mignani Gerard , Lemaire Marc
Published: July 2014

The presented two titanium‐based systems reduce aliphatic and aromatic nitriles in the presence of various functional groups.
ChemInform Abstract: Highly Diastereoselective 1,2‐Dichlorination of Glycals Using NCS/PPh3: Study of Substituent and Solvent Effects.
Authors: Hussain Altaf , Mukherjee Debaraj
Published: July 2014

A highly diastereoselective 1,2‐dichlorination of glycals is reported.
ChemInform Abstract: Exploring the Synthesis and the Reactivity of 4‐[4‐(Chloromethyl)styryl]‐1,2‐dimethyl‐5‐nitro‐1H‐imidazole in TDAE Strategy.
Authors: Primas Nicolas , Neilde Kevin , Kabri Youssef , Crozet Maxime D. , Terme Thierry , Vanelle Patrice
Published: July 2014

The synthesis of the title species (IV) is based on Stille cross‐coupling of stannane (I) with 4‐bromoimidazole (II) followed by deprotection and chlorination.
ChemInform Abstract: Lewis Acid Assisted Ruthenium‐Catalyzed Metathesis Reactions.
Authors: Luebbe Christa , Dumrath Andreas , Neumann Helfried , Beller Matthias , Kadyrov Renat
Published: July 2014

The addition of Fe(acac) and NaPF6 enhances the metathesis activity of the ruthenium carbene catalyst.
ChemInform Abstract: One‐Pot Esterification and Amide Formation via Acid‐Catalyzed Dehydration and Ritter Reactions.
Authors: Dawar Pankaj , Raju M. Bagavan , Ramakrishna Ramesha Andagar
Published: July 2014

Nearly quantitative conversion of carboxylic acids to ester is achieved using acetonitrile as a water trap.
ChemInform Abstract: Deprotection of Acetals from Unsaturated, Unstable Bromoketones.
Authors: Descomps Alexandre , Carlson Rolf
Published: July 2014

The unstable ketones (II) are obtained from corresponding acetals (I) using anhydrous iron(III) chloride suspended on dry silica.
ChemInform Abstract: Gold(I)/(III)‐Catalyzed Rearrangement of Divinyl Ketones and Acyloxyalkynyloxiranes into Cyclopentenones.
Authors: Hoffmann Marie , Weibel Jean‐Marc , de Fremont Pierre , Pale Patrick , Blanc Aurelien
Published: July 2014

Multifaceted gold(I/III) catalysts, possessing carbophilic and oxophilic characters, catalyze the formation of hydroxylated cyclopentenones in the Nazarov reaction from activated divinyl ketones.
ChemInform Abstract: Ruthenium‐Catalyzed Hydroarylation of Anilides with Alkynes: An Efficient Route to ortho‐Alkenylated Anilines.
Authors: Manikandan Rajendran , Jeganmohan Masilamani
Published: July 2014

Acetanilides react with symmetrical and unsymmetrical alkynes in the presence of a Ru/Ag catalytic system in a regio‐ and stereoselective manner providing ortho‐alkenylated acetanilides.
ChemInform Abstract: Aminative Umpolung of Aldehydes to α‐Amino Anion Equivalents for Pd‐Catalyzed Allylation: An Efficient Synthesis of Homoallylic Amines.
Authors: Ding Lei , Chen Jing , Hu Yifan , Xu Juan , Gong Xing , Xu Dongfang , Zhao Baoguo , Li Hexing
Published: July 2014

Aldehydes react with diphenylglycine to give lithium salts, which undergo decarboxylation to generate α‐imino anions.
ChemInform Abstract: Enantioselective Alkenylation of Aldimines Catalyzed by a Rhodium—Diene Complex.
Authors: Cui Zhe , Chen Ya‐Jing , Gao Wen‐Yun , Feng Chen‐Guo , Lin Guo‐Qiang
Published: July 2014

The asymmetric rhodium‐catalyzed addition reaction of potassium alkenyltrifluoroborates to acyclic aldimines provides a reliable and scalable method for the modular synthesis of chiral α‐branched allylic amines.The reactions with different combinations of imines and alkenyl trifluoroborates proceed smoothly affording high yields and excellent enantioselectivities.
ChemInform Abstract: Synthesis of Heterodinuclear Hemisalen Complexes on a Hexaarylbenzene Scaffold and Their Application for the Cross‐Pinacol Coupling Reaction.
Authors: Miyasaka Akihiro , Amaya Toru , Hirao Toshikazu
Published: July 2014

Newly synthesized titanium‐vanadium complexes with undefined structures are applied as catalysts in the cross‐pinacol coupling of aliphatic and aromatic aldehydes giving a mixture of diastereomers.
ChemInform Abstract: Asymmetric Alkyne Addition to Aldehydes Catalyzed by Schiff Bases Made from 1,1′‐Bi‐2‐naphthol and Chiral Benzylic Amines.
Authors: Chen Cen , Huang Qingfei , Zou Sheng , Wang Lei , Luan Bao , Zhu Jin , Wang Qiwei , Pu Lin
Published: July 2014

BINOL‐based Schiff bases are prepared from 3,3′‐diformyl‐BINOL and chiral benzylic amines and are examined as catalyst for the one‐pot, two‐step reaction of phenylacetylenes and aromatic aldehydes in the presence of ZnEt2.
ChemInform Abstract: Palladium‐Catalyzed Acetylation of Arenes.
Authors: Ramgren Stephen D. , Garg Neil K.
Published: July 2014

A simple method for the preparation of aryl methyl ketones is reported.
ChemInform Abstract: Rh‐Catalyzed Asymmetric Hydrogenation Using a Furanoside Monophosphite Second‐Generation Ligand Library: Scope and Limitations.
Authors: Alegre Sabina , Alberico Elisabetta , Pamies Oscar , Dieguez Montserrat
Published: July 2014

By introducing substituents at the C‐3 position of the furanoside moiety novel furanoside monophosphite ligands having a BINOL‐phosphite substituent are developed and their ability as ligand in asymmetric Rh‐catalyzed hydrogenation reactions is successfully examined.
ChemInform Abstract: High Yield Synthesis of D‐Phenylglycine and Its Derivatives by Nitrilase Mediated Dynamic Kinetic Resolution in Aqueous‐1‐octanol Biphasic System.
Authors: Qiu Jian , Su Erzheng , Wang Wei , Wei Dongzhi
Published: July 2014

The nitrilase mediated enantioselective hydrolysis is combined with an in situ racemization.
ChemInform Abstract: Nickel‐Catalyzed (E)‐Selective Semihydrogenation of Internal Alkynes with Hypophosphorous Acid.
Authors: Chen Tieqiao , Xiao Jing , Zhou Yongbo , Yin Shuangfeng , Han Li‐Biao
Published: July 2014

The method is applied to the synthesis of a precursor of the drug resveratrol.
ChemInform Abstract: Palladium‐Catalyzed Hiyama Cross‐Coupling Reaction of Alkynyl Halides with Aryltrialkoxysilanes under Aerobic Conditions.
Authors: Tang Jiansheng , Guo Cancheng
Published: July 2014

Alkynyl iodide [e.g. (Ic)] is not suited as starting material since homocoupling occurs as side process.
ChemInform Abstract: Evaluating Dynamic Kinetic Resolution Strategies in the Asymmetric Hydrosilylation of Cyclic Ketimines.
Authors: Jones Simon , Zhao Peichao
Published: July 2014

The dynamic kinetic resolution by HSiCl3‐reduction of cyclic imines is investigated in the presence of an N‐acylated L‐prolinol derived catalyst.
ChemInform Abstract: Sharpless Asymmetric Dihydroxylation as the Key Step in the Enantioselective Synthesis of Spirocyclic σ1 Receptor Ligands.
Authors: Holl Katharina , Schepmann Dirk , Daniliuc Constantin Gabriel , Wuensch Bernhard
Published: July 2014

Compound (III) shows a high σ1 affinity, a high eudismic ratio, and also exhibits high selectivity over the σ2 subtype.
ChemInform Abstract: Formation of Epoxides and N‐Arylaziridines via a Simple Mg‐Barbier Reaction in DMF.
Authors: Oudeyer Sylvain , Leonel Eric , Paugam Jean Paul , Nedelec Jean‐Yves
Published: July 2014

These two one‐pot processes involve less pollutant and more user‐friendly reagents than previously reported methods.
ChemInform Abstract: Stereoselective Synthesis of C‐Sulfonylated Aziridines from Halomethyl Phenyl Sulfone and N‐tert‐Butanesulfinyl Imines.
Authors: Li Ya , Huang Haiji , Wang Zhen , Yang Fan , Li Desheng , Qin Bo , Ren Xinfeng
Published: July 2014

Title compounds [(III) and (VII)] are efficiently synthesized by using a one‐step aza‐Darzens reaction.
ChemInform Abstract: Highly Regio‐ and Diastereoselective Synthesis of CF3‐Substituted Lactones via Photoredox‐Catalyzed Carbolactonization of Alkenoic Acids.
Authors: Yasu Yusuke , Arai Yusuke , Tomita Ren , Koike Takashi , Akita Munetaka
Published: July 2014

Trifluoromethylative lactonization of both terminal and internal alkenoic acids by photoredox catalysis is developed.
ChemInform Abstract: Formal [4 + 1]‐Cycloaddition of Homopropargyl Alcohols to Diazo Dicarbonyl Compounds Giving Substituted Tetrahydrofurans.
Authors: Urabe Fumiya , Miyamoto Shohei , Takahashi Keisuke , Ishihara Jun , Hatakeyama Susumi
Published: July 2014

This novel ring closure reaction involves tandem OH insertion/Conia‐ene cyclization under cooperative Rh(II)/Zn(II) catalysis, providing access to substituted tetrahydrofurans with complete (E)‐selection in the case of nonterminal alkynes (XII).
ChemInform Abstract: Pd(II)‐Catalyzed ortho‐C—H Oxidation of Arylacetic Acid Derivatives: Synthesis of Benzofuranones.
Authors: Rit Raja K. , Yadav M. Ramu , Sahoo Akhila K.
Published: July 2014

Ortho‐acetoxylation and acyloxylation of arylacetic acid derivatives are carried out with the aid of a novel S‐methyl‐S‐pyridylsulfoximine directing group.
ChemInform Abstract: Redox‐Neutral α‐Arylation of Amines.
Authors: Chen Weijie , Wilde Richard G. , Seidel Daniel
Published: July 2014

A simple protocol is developed for the highly regioselective redox‐neutral α‐arylation/N‐alkylation of cyclic amines.
ChemInform Abstract: Asymmetric Friedel—Crafts Alkylation of α‐Substituted β‐Nitroacrylates: Access to β2,2‐Amino Acids Bearing Indolic All‐Carbon Quaternary Stereocenters.
Authors: Weng Jian‐Quan , Deng Qiao‐Man , Wu Liang , Xu Kai , Wu Hao , Liu Ren‐Rong , Gao Jian‐Rong , Jia Yi‐Xia
Published: July 2014

A highly enantioselective Friedel—Crafts alkylation reaction of indoles with acyclic α‐substituted β‐nitroacrylates is developed under the catalysis of a Ni(ClO4)2—bisoxazoline complex, affording chiral indolic β‐nitroesters bearing an all‐carbon quaternary stereocenter.
ChemInform Abstract: Remodeling of Fumagillol: Discovery of an Oxygen‐Directed Oxidative Mannich Reaction.
Authors: Grenning Alexander J. , Snyder John K. , Porco John A. Jr.
Published: July 2014

The title reaction is utilized for functionalization of fumagillol‐derived alkaloid type compound (I).
ChemInform Abstract: 3‐Alkenyl‐2‐silyloxyindoles in Vinylogous Mannich Reactions: Synthesis of Aminated Indole‐Based Scaffolds and Products.
Authors: Ranieri Beatrice , Sartori Andrea , Curti Claudio , Battistini Lucia , Rassu Gloria , Pelosi Giorgio , Casiraghi Giovanni , Zanardi Franca
Published: July 2014

Tbs‐Protected oxydienes, derived from enolizable alkylideneoxindoles, serve as extended carbon nucleophiles in Lewis acid‐catalyzed vinylogous Mukaiyama‐type Mannich coupling with both aliphatic and aromatic N‐Boc aminals.
ChemInform Abstract: Lewis Acid‐Catalyzed Tandem Acylation—Nazarov Cyclization for the Syntheses of Fused Cyclopentenones.
Authors: Li Ertong , Li Changwei , Wang Jing , Wang Jinqian , Dong Lihong , Guo Xiaohe , Song Chuanjun , Chang Junbiao
Published: July 2014

The title method is applied to the synthesis of the natural product bruceolline E (XVI).
ChemInform Abstract: Dearomatization Strategy and Palladium‐Catalyzed Domino Reaction: Construction of Azepino[5,4,3‐cd]indoles from 2‐Alkynylanilines.
Authors: Zheng Chen , Chen Jin Jin , Fan Renhua
Published: July 2014

This synthetic process involves a regioselective meta‐functionalization of 2‐alkynylanilines using a dearomatization strategy and a palladium(II)‐catalyzed domino heterocyclization/Heck reaction.
ChemInform Abstract: Phosphine‐Catalyzed [3 + 2] Cycloaddition Reactions of Azomethine Imines with Electron‐Deficient Alkenes: A Facile Access to Dinitrogen‐Fused Heterocycles.
Authors: Li Zhen , Yu Hao , Liu Honglei , Zhang Lei , Jiang Hui , Wang Bo , Guo Hongchao
Published: July 2014

The phosphine‐catalyzed [3 + 2] cycloaddition reaction of various azomethine imines with electron‐deficient phenylsulfonyl alkenes is described.
ChemInform Abstract: Substrate Control in Enantioselective and Diastereoselective Aldol Reaction by Memory of Chirality: A Rapid Access to Enantiopure β‐Hydroxy Quaternary α‐Amino Acids.
Authors: Viswambharan Baby , Gori Didier , Guillot Regis , Kouklovsky Cyrille , Alezra Valerie
Published: July 2014

An asymmetric aldol reaction memorizing the underlying chirality of the starting amino acid is reported for the first time.
ChemInform Abstract: Regioselective Ring Opening of β‐Phenylglycidate and Aziridine‐2‐carboxylates with N‐Alkylhydroxylamines: Synthesis of Isoxazolidinones.
Authors: Tabarki Mohamed Ali , Besbes Rafaa
Published: July 2014

The reaction of oxiranyl esters (I) or analogous azirines (IV) with N‐alkylhydroxylamine anions provides a highly regioselective synthesis of trans‐isoxazolidin‐3‐ones (III) and (V).
ChemInform Abstract: Chiral Silver Phosphate Catalyzed Transformation of ortho‐Alkynylaryl Ketones into 1H‐Isochromene Derivatives Through an Intramolecular‐Cyclization/Enantioselective‐Reduction Sequence.
Authors: Terada Masahiro , Li Feng , Toda Yasunori
Published: July 2014

The synthetic utility of the present method is also demonstrated by the synthesis of 9‐oxabicyclo[3.3.1]nona‐2,6‐diene derivative (IX), a framework in some biologically active molecules.
ChemInform Abstract: 7‐Chloroquinolinotriazoles: Synthesis by the Azide—Alkyne Cycloaddition Click Chemistry, Antimalarial Activity, Cytotoxicity and SAR Studies.
Authors: Pereira Guilherme R. , Brandao Geraldo Celio , Arantes Lucas M. , de Oliveira Haliton A. Jr. , de Paula Renata Cristina , do Nascimento Maria Fernanda A. , dos Santos Fabio M. , da Rocha Ramon K. , Lopes Julio Cesar D. , de Oliveira Alaide Braga
Published: July 2014

All synthesized compounds are screened for their in vitro activity against Plasmodium falciparum (W2) and cytotoxicity to Hep G2A16 cells.
ChemInform Abstract: Site‐Selective C—H Borylation of Quinolines at the C8 Position Catalyzed by a Silica‐Supported Phosphane—Iridium System.
Authors: Konishi Shota , Kawamorita Soichiro , Iwai Tomohiro , Steel Patrick G. , Marder Todd B. , Sawamura Masaya
Published: July 2014

The synthesis of the corticotropin‐releasing factor1 receptor antagonist (XIII) demonstrates the utility of the presented strategy.
ChemInform Abstract: Hydroxypropyl Substituted Nitrogen Bridgehead Fused Cyanopyridines.
Authors: Milokhov Demyd S. , Khilya Olga V. , Turov Alexander V. , Medviediev Volodymyr V. , Shishkin Oleg V. , Volovenko Yulian M.
Published: July 2014

The base promoted Michael addition of substituted acetonitriles to 2‐hetaryl‐2‐(tetrahydro‐2‐furanyliden)acetonitriles followed by ring transformations provides a novel and convenient synthetic access to nitrogen bridgehead fused cyanopyridines bearing a hydroxypropyl side chain.
ChemInform Abstract: Design and Synthesis of Heterocyclic Cations for Specific DNA Recognition: From AT‐Rich to Mixed‐Base‐Pair DNA Sequences.
Authors: Chai Yun , Paul Ananya , Rettig Michael , Wilson W. David , Boykin David W.
Published: July 2014

The synthesis of key compound (IV) and some derivatives in a convenient reaction sequence and the application in selective DNA recognition experiments is presented.
ChemInform Abstract: Dual‐Organocatalyst‐Promoted Asymmetric Cascade Reaction: Highly Efficient Construction of Enantiopure Fully Substituted Tetrahydro‐1,2‐oxazines.
Authors: Lin Hua , Sun Xing‐Wen , Lin Guo‐Qiang
Published: July 2014

A four‐component asymmetric α‐aminoxylation/aza‐Michael/Mannich cascade reaction for the construction of fully substituted chiral tetrahydro‐1,2‐oxazine derivatives is accomplished with excellent diastereo‐ and enantioselectivities.
ChemInform Abstract: The Photochemical Reaction of Vinylaziridines and Vinylazetidines with Chromium(0) and Molybdenum(0) (Fischer) Carbene Complexes.
Authors: Rivero Alexandra R. , Fernandez Israel , Sierra Miguel A.
Published: July 2014

The syntheses of the starting vinylaziridines and vinylazetidines are described as well.
ChemInform Abstract: Acylsilanes in Rhodium(III)‐Catalyzed Directed Aromatic C—H Alkenylations and Siloxycarbene Reactions with C—C Double Bonds.
Authors: Becker Peter , Priebbenow Daniel L. , Pirwerdjan Ramona , Bolm Carsten
Published: July 2014

A Rh‐catalyzed ortho‐directed olefinations of aroylsilanes followed by light‐induced intramolecular cyclizations to indanone derivatives are described.
ChemInform Abstract: Diethyl Fluoronitromethylphosphonate: Synthesis and Application in Nucleophilic Fluoroalkyl Additions.
Authors: Opekar Stanislav , Pohl Radek , Beran Pavel , Rulisek Lubomir , Beier Petr
Published: July 2014

The synthesis of the new fluorinated C1 reagent is described and applied in the stereoselective syntheses of novel fluoronitroalkenes by Horner—Wadsworth—Emmons reaction with carbonyl compounds.
ChemInform Abstract: Novel Catalyst System for Hydrostannation of Alkynes.
Authors: Gupta Sreya , Do Youngshil , Lee Jin Hee , Lee Miryeong , Han Junghoon , Rhee Young Ho , Park Jaiwook
Published: July 2014

The catalyst can be recycled.
ChemInform Abstract: Prenyleudesmanes, Rare Natural Diterpenoids from Dysoxylum densiflorum.
Authors: Gu Ji , Qian Sheng‐Yan , Zhao Yun‐Li , Cheng Gui‐Guang , Hu Dong‐Bao , Zhang Bao‐Hong , Li Yan , Liu Ya‐Ping , Luo Xiao‐Dong
Published: July 2014

Twelve new prenyleudesmanes (I) to (VI), named dysoxydenones A—L, together with one known prenyleudesmane are isolated from Dysoxylum densiflorum.
ChemInform Abstract: Three New Triterpene Saponins from Bolbostemma paniculatum
Authors: Tang Yun , Cao Jia‐Qing , Li Wei , Li Wei , Zhao Yu‐Qing
Published: July 2014

isolation and structure determination of two novel noroleanane saponins, tubeimoside A (I) and regioisomeric tubeisomide B, and a new dammarane triterpene saponin, tubeimoside C (II), together with two known compounds