bluuebunny/crossref_metadata_2025_split huggingface dataset:
ChemInform Abstract: Ba4Ga2Se8: A Ternary Selenide Containing Chains and Discrete Se2‐2 Units.
Authors: Yin Wenlong , Iyer Abishek K. , Lin Xinsong , Mar Arthur 
Published: May 2016

AbstractBa4Ga2Se8 is prepared by solid state reaction of a stoichiometric mixture of BaSe, Ga2Se3, and Se (evacuated silica tube, 1023 K, 96 h).
ChemInform Abstract: A New High Pressure Form of Ba3NiSb2O9.
Authors: Darie Celine , Lepoittevin Christophe , Klein Holger , Kodjikian Stephanie , Bordet Pierre , Colin Claire V. , Lebedev Oleg I. , Deudon Catherine , Payen Christophe 
Published: May 2016

AbstractPolycrystalline samples of 6H‐B Ba3NiSb2O9 are obtained from the ambient pressure 6H‐A modification by hot‐press sintering (anvil cell, 2—4 GPa, 400—680 °C).
ChemInform Abstract: Li2OHCl Crystalline Electrolyte for Stable Metallic Lithium Anodes.
Authors: Hood Zachary D. , Wang Hui , Samuthira Pandian Amaresh , Keum Jong Kahk , Liang Chengdu 
Published: May 2016

AbstractLi2OHCl is prepared through mild heating of LiOH and LiCl mixtures in various ratios from 1:2 to 2:1 under Ar (Ni crucible in autoclave, 350 °C; cooling to 250 °C at a rate of 8 °C/h).
ChemInform Abstract: γ‐Sultam‐Cored N,N‐Ligands in the Ruthenium(II)‐Catalyzed Asymmetric Transfer Hydrogenation of Aryl Ketones.
Authors: Rast Slavko , Modec Barbara , Stephan Michel , Mohar Barbara 
Published: May 2016

AbstractThe synthesis of new enantiopure syn and anti sultam‐cored ligands and their application in the title reaction is described.
ChemInform Abstract: Gold(I)‐Catalyzed Tandem Cyclization of Propargyl Acetals and Alkynes.
Authors: Siah Huey‐San Melanie , Hogsnes Morten Christian , Iqbal Naseem , Fiksdahl Anne 
Published: May 2016

AbstractFunctionalized bicyclic pentalene tandem products with four new stereocenters are obtained via subsequent [2 + 2] and [2 + 3] cycloadditions.
ChemInform Abstract: Synthesis of Enantiopure 1,2‐Azido and 1,2‐Amino Alcohols via Regio‐ and Stereoselective Ring‐Opening of Enantiopure Epoxides by Sodium Azide in Hot Water.
Authors: Wang Hai‐Yang , Huang Kun , De Jesus Melvin , Espinosa Sandraliz , Pinero‐Santiago Luis E. , Barnes Charles L. , Ortiz‐Marciales Margarita 
Published: May 2016

AbstractThe ring‐opening of enantiopure aryl epoxides by azide anion takes place preferentially at the internal position to produce 2‐azido ethanols with high regio‐ and enantioselectivity.
ChemInform Abstract: Attractive Aerobic Access to the α,β‐Unsaturated Acyl Azolium Intermediate: Oxidative NHC Catalysis via Multistep Electron Transfer.
Authors: Ta L. , Axelsson A. , Sunden H. 
Published: May 2016

AbstractOxidative esterification and oxidative Michael addition are accomplished using air as oxidative agent and oxidative N‐heterocyclic carbene (NHC) catalysis together with several additives.
ChemInform Abstract: Stable and Reusable Binaphthyl‐Supported Palladium Catalyst for Aminocarbonylation of Aryl Iodides.
Authors: Sharma Nidhi , Sekar Govindasamy 
Published: May 2016

AbstractA recently reported heterogeneous binaphthyl‐supported palladium catalyst is applied for the aminocarbonylation of aryl iodides using primary and secondary amines to give the corresponding amides.
ChemInform Abstract: Iron‐Catalyzed Sequential Reaction Towards α‐Aminonitriles from Secondary Amines, Primary Alcohols and Trimethylsilyl Cyanide.
Authors: Shen Hang , Hu Liangzhen , Liu Qing , Hussain Muhammad Ijaz , Pan Jing , Huang Mingming , Xiong Yan 
Published: May 2016

AbstractA novel and one‐pot iron‐catalyzed sequential reaction of secondary amines with primary alcohols, trimethylsilyl cyanide, and tert‐butyl hydroperoxide is reported.
ChemInform Abstract: Alcoholysis of Malonyl Peroxides to Give Peracids.
Authors: Lapitskaya Margarita A. , Vil' Vera A. , Daeva Elena D. , Terent'ev Alexander O. , Pivnitsky Kasimir K. 
Published: May 2016

AbstractThe alcoholysis of malonyl peroxides of type (I) is studied.
ChemInform Abstract: Direct Catalytic Synthesis of Unprotected 2‐Amino‐1‐Phenylethanols from Alkenes by Using Iron(II) Phthalocyanine.
Authors: Legnani Luca , Morandi Bill 
Published: May 2016

AbstractThe method is applied to the synthesis of bioactive compounds, such as (.+‐.)‐aegoline‐methylether and (.+‐.)‐phenylephrine, and can be extended to aminoetherifications.
ChemInform Abstract: Practical Direct α‐Arylation of Cyclopentanones by Palladium/Enamine Cooperative Catalysis.
Authors: Xu Yan , Su Tianshun , Huang Zhongxing , Dong Guangbin 
Published: May 2016

AbstractDirect mono‐α‐C—H arylation of cyclopentanones with a variety of aryl bromides is achieved using a palladium/amine catalyst system.
ChemInform Abstract: Base‐Mediated Isocyanide‐Based Three‐Component Reactions: Divergent Synthesis of Spiro‐Substituted Furans and Pyrroles.
Authors: Wang Hai‐Ying , Bao Ming , Jiang Bo , Li Liang 
Published: May 2016

AbstractCycloadditions of malononitriles (I), (V), and (VIII), acetylenedicarboxylates, and isocyanides give either furans or pyrroles under different reaction conditions.
ChemInform Abstract: Gold‐Catalyzed Three‐Component Spirocyclization: A One‐Pot Approach to Functionalized Pyrazolidines.
Authors: Wagner Bernd , Hiller Wolf , Ohno Hiroaki , Krause Norbert 
Published: May 2016

AbstractThe efficient approach involves the coupling of alkynols, hydrazines and various aliphatic and aromatic aldehydes/ketones via cycloisomerization of the alkynol to an exocyclic enol ether and subsequent [3+2]cycloaddition of an azomethine ylide.
ChemInform Abstract: Efficient Synthesis of Triazole‐Containing Spiro Dilactones.
Authors: Ghochikyan Tariel V. , Muzalevskiy Vasily M. , Samvelyan Melanya A. , Galstyan Armen S. , Nenajdenko Valentine G. 
Published: May 2016

Abstract9 Title compounds are prepared using (I) as starting compound.
ChemInform Abstract: RhIII‐Catalyzed C—H Olefination of Benzoic Acids under Mild Conditions Using Oxygen as the Sole Oxidant.
Authors: Jiang Quandi , Zhu Changlei , Zhao Huaiqing , Su Weiping 
Published: May 2016

AbstractAromatic acids with various functional groups react with a range of alkenes affording cyclized lactones or uncyclized alkenylarenes.
ChemInform Abstract: Copper‐Nitrene Triggered Annulation of α‐Acyl Cinnamides: Access to Isoxazol‐3(2H)‐ones.
Authors: Yu Mangfei , Zhang Qian , Li Gong , Yuan Jingwen , Zhang Ning , Zhang Rui , Liang Yongjiu , Dong Dewen 
Published: May 2016

AbstractIsoxazol‐3(2H)‐ones are prepared starting from α‐acyl cinnamides and tosyliminophenyliodinane catalyzed by Cu(OAc)2 under very mild conditions via a tandem aza‐Michael addition and intramolecular cyclization sequence.
ChemInform Abstract: Stereoselective Synthesis of Highly Functionalized 2,3‐Dihydro‐4‐pyranones Using Phosphine Oxide as Catalyst.
Authors: Kotani Shunsuke , Miyazaki Shiki , Kawahara Kazuya , Shimoda Yasushi , Sugiura Masaharu , Nakajima Makoto 
Published: May 2016

AbstractThe asymmetric synthesis of the title pyranones involves the double aldol reaction of butenone (I) with various aldehydes and subsequent cyclization.
ChemInform Abstract: Sulfonic Acid‐Functionalized MIL‐101(Cr) as a Highly Efficient Heterogeneous Catalyst for One‐Pot Synthesis of 2‐Amino‐4H‐chromenes in Aqueous Medium.
Authors: Saikia Mrinal , Saikia Lakshi 
Published: May 2016

AbstractThe title chromenes are prepared by three‐component cyclocondensation of resorcinol, malononitrile, and various aromatic aldehydes with good yields.
ChemInform Abstract: Palladium‐Catalyzed Direct Alkenylation of 4‐Hydroxy‐2‐pyridones.
Authors: Katsina Tania , Anagnostaki Elissavet E. , Mitsa Foteini , Sarli Vasiliki , Zografos Alexandros L. 
Published: May 2016

AbstractThe protocol enables the preparation of functionalized furopyridones when terminal alkynes are utilized.
ChemInform Abstract: Transition Metal‐Free Minisci Reaction Promoted by NCS, and TBHP: Acylation of Heteroarenes.
Authors: Siddaraju Yogesh , Prabhu Kandikere Ramaiah 
Published: May 2016

AbstractIsoquinoline derivatives [(I), (VI), and (IX)], quinoline (XI) and other nitrogen‐containing heteroarenes are efficiently acylated by reaction with a variety of aryl and alkyl aldehydes under mild metal‐free conditions using NCS as catalyst and tert‐butyl hydroperoxide as an oxidant.
ChemInform Abstract: Direct Synthesis of Protoberberine Alkaloids by Rh‐Catalyzed C—H Bond Activation as the Key Step.
Authors: Jayakumar Jayachandran , Cheng Chien‐Hong 
Published: May 2016

AbstractA one‐pot reaction of substituted benzaldehydes with alkyne—amines by Rh‐catalyzed C—H activation and annulation to afford various natural and unnatural protoberberine alkaloids is reported.
ChemInform Abstract: Expedient Synthesis of New Cinnoline Diones by Ru‐Catalyzed Regioselective Unexpected Deoxygenation‐Oxidative Annulation of Propargyl Alcohols with Phthalazinones and Pyridazinones.
Authors: Rajkumar Subramani , Antony Savarimuthu S. , Senthil Kumaran Rajendran , Nagaraja C. M. , Gandhi Thirumanavelan 
Published: May 2016

AbstractThe bond selectivity is caused by the traceless directing nature of the hydroxyl group of propargyl alcohol.
ChemInform Abstract: Insertion of 1,3‐Diphenylprop‐2‐yn‐1‐one into Imidazo[4,5‐b]pyridines in the Presence of Water: One‐Pot Synthesis of Pyrido[2,3‐b][1,4]diazocin‐9‐ones.
Authors: Trofimov Boris A. , Nikitina Lina P. , Belyaeva Kseniya V. , Andriyankova Ludmila V. , Mal'kina Anastasiya G. , Bagryanskaya Irina Yu. , Afonin Andrei V. , Ushakov Igor A. 
Published: May 2016

Abstract1,3‐Diphenylprop‐2‐yn‐1‐one (II) is inserted into imidazo[4,5‐b]pyridines(I) in the presence of equimolar amounts of water.
ChemInform Abstract: Direct Phosphonation of Quinoxalin‐2(1H)‐ones under Transition‐Metal‐Free Conditions.
Authors: Gao Ming , Li Yi , Xie Lijuan , Chauvin Remi , Cui Xiuling 
Published: May 2016

AbstractThe selective phosphonation of quinoxalin‐2(1H)‐ones with H‐phosphonates, H‐phosphinates or H‐phosphine oxides under transition‐metal‐free conditions is reported.
ChemInform Abstract: Phenylselanyl‐1H‐1,2,3‐triazole‐4‐carbonitriles: Synthesis, Antioxidant Properties and Use as Precursors to Highly Functionalized Tetrazoles.
Authors: Savegnago Lucielli , do Sacramento Manoela , Brod Lucimar M. P. , Fronza Mariana G. , Seus Natalia , Lenardao Eder J. , Paixao Marcio W. , Alves Diego 
Published: May 2016

AbstractThe reaction of azidophenyl phenylselenides with α‐ketonitriles furnishes the title compounds in high yields.
ChemInform Abstract: Synthesis of Polyhydroxylated Pyrrolidines from Sugar‐Derived Bromonitriles Through a Cascade Addition of Allylmagnesium Bromide/Cyclization/Reduction.
Authors: Malik Michal , Jarosz Stawomir 
Published: May 2016

AbstractThe reaction of bromonitriles with allylmagnesium bromide in the presence of Zn(BH4)2 gives rise to 2‐allylpyrrolidines such as (III), (V), and (VIII), whilst the reaction with excess amounts of allylmagnesium bromide in THF and DMPU leads to 2,2‐diallylpyrrolidines (VI) and (XIV).
ChemInform Abstract: Marine AChE Inhibitors Isolated from Geodia barretti: Natural Compounds and Their Synthetic Analogues.
Authors: Olsen Elisabeth K. , Hansen Espen , W. K. Moodie Lindon , Isaksson Johan , Sepcic Kristina , Cergolj Marija , Svenson Johan , Andersen Jeanette H. 
Published: May 2016

AbstractA novel brominated marine indole (I) is isolated along with the known marine AChE inhibitors barettin, 8,9‐dihydrobarettin, and 6‐bromoconicamin from the title sponge.
ChemInform Abstract: Asymmetric Synthesis and Absolute Configuration of (+)‐ and (‐)‐Perhexiline.
Authors: Tseng Chih‐Chung , Greig Iain R. , Harrison William T. A. , Zanda Matteo 
Published: May 2016

AbstractA scalable, chiral auxiliary‐based asymmetric synthesis of (‐)‐(S)‐perhexiline (I) is developed which is applied to the preparation of the opposite enantiomer.
NeuronCyto II: An automatic and quantitative solution for crossover neural cells in high throughput screening
Authors: Ong Kok Haur , De Jaydeep , Cheng Li , Ahmed Sohail , Yu Weimiao 
Published: May 2016

AbstractMicroscopy is a fundamental technology driving new biological discoveries. Today microscopy allows a large number of images to be acquired using, for example, High Throughput Screening (HTS) and 4D imaging. It is essential to be able to interrogate these images and extract quantitative information in an automated fashion. In the context of neurobiology, it is important to automatically quantify the morphology of neurons in terms of neurite number, length, branching and complexity, etc. One major issue in quantification of neuronal morphology is the “crossover” problem where neurites cross and it is difficult to assign which neurite belongs to which cell body. In the present study, we provide a solution to the “crossover” problem, the software package NeuronCyto II. NeuronCyto II is an interactive and user‐friendly software package for automatic neurite quantification. It has a well‐designed graphical user interface (GUI) with only a few free parameters allowing users to optimize the software by themselves and extract relevant quantitative information routinely. Users are able to interact with the images and the numerical features through the Result Inspector. The processing of neurites without crossover was presented in our previous work. Our solution for the “crossover” problem is developed based on our recently published work with directed graph theory. Both methods are implemented in NeuronCyto II. The results show that our solution is able to significantly improve the reliability and accuracy of the neurons displaying “crossover.” NeuronCyto II is freely available at the website: https://sites.google.com/site/neuroncyto/, which includes user support and where software upgrades will also be placed in the future. © 2016 The Authors. Cytometry Part A Published by Wiley Periodicals, Inc. on behalf of ISAC.
Scrophularia arguta, a widespread annual plant in the Canary Islands: a single recent colonization event or a more complex phylogeographic pattern?
Authors: Valtueña Francisco Javier , López Josefa , Álvarez Juan , Rodríguez‐Riaño Tomás , Ortega‐Olivencia Ana 
Published: May 2016

AbstractMany studies have addressed evolution and phylogeography of plant taxa in oceanic islands, but have primarily focused on endemics because of the assumption that in widespread taxa the absence of morphological differentiation between island and mainland populations is due to recent colonization. In this paper, we studied the phylogeography of Scrophularia arguta, a widespread annual species, in an attempt to determine the number and spatiotemporal origins of dispersal events to Canary Islands. Four different regions, ITS and ETS from nDNA and psbA‐trnH and psbJ‐petA from cpDNA, were used to date divergence events within S. arguta lineages and determine the phylogenetic relationships among populations. A haplotype network was obtained to elucidate the phylogenetic relationships among haplotypes. Our results support an ancient origin of S. arguta (Miocene) with expansion and genetic differentiation in the Pliocene coinciding with the aridification of northern Africa and the formation of the Mediterranean climate. Indeed, results indicate for Canary Islands three different events of colonization, including two ancient events that probably happened in the Pliocene and have originated the genetically most divergent populations into this species and, interestingly, a recent third event of colonization of Gran Canaria from mainland instead from the closest islands (Tenerife or Fuerteventura). In spite of the great genetic divergence among populations, it has not implied any morphological variation. Our work highlights the importance of nonendemic species to the genetic richness and conservation of island flora and the significance of the island populations of widespread taxa in the global biodiversity.
Hydrologic Evaluation of River Basin Scale Tillage Effects on Non‐Point Source Loads from Upland Crop Areas†
Authors: Ahn So Ra , Choi Joong Dae , Kim Seong Joon 
Published: May 2016

AbstractThis study used the Hydrological Simulation Program—Fortran (HSPF) model to evaluate the river basin scale effects of nonpoint source (NPS) pollution loads caused by tillage and no‐tillage applications to upland crop areas. The study site was the Byulmi‐cheon river basin (1.21 km2) of South Korea. Hourly rainfall, discharge and stream water quality data for 2 years (2012–2013) were collected at the river basin outlet. The HSPF model under tillage conditions was calibrated using 23 rainfall events with an average Nash–Sutcliffe model efficiency value for runoff of 0.61 and determination coefficients for sediment, total nitrogen (T‐N) and total phosphorus (T–P) of 0.58, 0.61 and 0.62 respectively. The field experiment results from the no‐tillage plots with slopes of 3 and 8% under radish and sesame cultivation showed decreases in the runoff ratio, sediment, T‐N and T–P of 10.8, 81.7, 11.9 and 17.1% respectively. The HSPF model parameters soil bulk density (BD) and soil infiltration capacity (INFILT) were controlled for the upland crop areas during the evaluation of the no‐tillage effects. By increasing the parameter values from 1.33 Mg m−3 BD and 4.1 mm h−1 INFILT for the tillage condition to 1.90 Mg m−3 BD and 8.9 mm h−1 INFILT for the no‐tillage condition, the river basin runoff ratio and sediment, T‐N and T–P values were reduced by 10.3, 56.7, 18.3 and 35.9% respectively. Copyright © 2016 John Wiley & Sons, Ltd.
Estimation of the Costs of Desertification in China: A Critical Review
Authors: Cheng Leilei , Lu Qi , Wu Bo , Yin Changbin , Bao Yingshuang , Gong Liyan 
Published: May 2016

AbstractA preliminary conceptual framework is proposed for the estimation of the costs of desertification. This framework consists of assessment of the extent and severity of desertification, identification of various impacts and valuation of the direct and indirect costs of desertification. Based on this framework, three well‐cited studies of the costs of desertification in China were critically reviewed. Limitations in these studies include double counting, confusion of short‐term and long‐term costs and the lack of necessary adjustment of price parameters. Refinement of the estimates indicates that these limitations have caused serious overestimation or underestimation of the costs of desertification. To achieve more reliable and useful estimates, future studies need to overcome the limitations mentioned in the preceding texts and use the latest available data on desertification and its various impacts. A more comprehensive conceptual framework that includes the valuation of dryland ecosystem services could also be developed to guide future studies. Copyright © 2016 John Wiley & Sons, Ltd.
Survival of Prochlorococcus in extended darkness
Authors: Coe Allison , Ghizzoni Julie , LeGault Kristen , Biller Steven , Roggensack Sara E. , Chisholm Sallie W. 
Published: May 2016

AbstractProchlorococcus is the smallest oxygenic phototroph in the ocean, where it can be found in great abundance throughout the euphotic zone in mid‐latitude waters. Populations of this picocyanobacterium have been observed below the euphotic zone, but the viability of these cells is unclear. To explore the tolerance of Prochlorococcus to extended light‐deprivation, we subjected multiple strains of Prochlorococcus to varying periods of darkness and examined their ability to recover when placed back in the light. Some strains recovered after 35 h of darkness while others could not; this variability was not related to whether the strains were members of high‐ or low‐ light adapted ecotypes. The presence of a marine heterotroph, Alteromonas macleodii MIT1002, in the cultures extended their ability to survive prolonged darkness, in the most extreme case by 11 d. This could be attributed at least in part to the reduction of hydrogen peroxide in co‐cultures, consistent with known roles of “helper bacteria” in detoxifying hydrogen peroxide, and this effect could be mimicked to some degree by the addition of a known hydrogen peroxide quencher, sodium pyruvate. The addition of glucose alone to the cultures provided marginal enhancement, but when both pyruvate and glucose were added together, all strains were able to survive longer in darkness than they were with only the heterotroph added. Thus, it appears that Prochlorococcus dark‐survival depends on a multitude of factors. Limited analyses of Synechococcus suggest that its dark‐survival capacity is longer than that of Prochlorococcus, for reasons that are not yet clear.
Optimization of planar strongly coupled wireless power transfer system for biomedical applications
Authors: Reza Khan Sadeque , Choi GoangSeog 
Published: May 2016

ABSTRACTStrongly coupled four‐coil wireless power transfer (WPT) system is presented in this letter. Conformal architecture is used for both transmitter (TX) and receiver (RX) coils. Thus, a high mutual coupling coefficient is achieved between the coplanar coils. Furthermore, the quality factors of primary and secondary coils are improved. The proposed WPT system features a compact structure for biomedical applications and provides a measured efficiency greater than 79% when the distance between the TX and RX is 10 mm at a resonance frequency of 13.56 MHz. The designed system is also simulated for 10 mm human tissue medium using HFSS, which generates a power transfer efficiency of 55.1%. The simulated results are also verified by experimentation. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:1861–1866, 2016
Low‐cost software‐defined wireless cognitive network based on real‐time multi‐sector spectrum sensing and reconfigurable antenna array
Authors: Mazzer D. , Bontempo M. M. , Alberti A. M. , Cerqueira Sodré Arismar 
Published: May 2016

ABSTRACTThis article presents the development of an electrically controlled reconfigurable antenna array and its implementation in a low‐cost embedded wireless cognitive network with a real‐time multi‐sector spectrum sensing. The proposed approach has been implemented in the unlicensed 2.4GHz ISM band with the purpose of independently performing spatial and spectrum sensing over different sectors of the wireless coverage area in real time. This novel network functionality is ensured by the use of an antenna array that is able to provide a reconfigurable radiation pattern. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:1929–1934, 2016
Compact millimeter‐wave switched‐beam antenna arrays for short range communications
Authors: Alreshaid A. T. , Sharawi M. S. , Podilchak S. , Sarabandi K. 
Published: May 2016

ABSTRACTThe need for more data throughput is a requirement that will keep growing in future wireless standards, and during the past few years, millimeter‐wave technology has generated much excitement in the mobile and wireless communications sectors due to the large bandwidth it can offer. In this letter two different travelling‐wave, slot antenna arrays are proposed which can offer tunable switched‐beam capability at millimeter‐wave frequencies. The antenna systems are built on a single layer PCB with top‐ and bottom‐side etching for operation at 28 GHz with at least 0.7 GHz of measured impedance bandwidth. For the first design, a planar 2 × 4 slot antenna array is proposed while the second design is implemented using a 4 × 4 slot array to demonstrate improved beam directivity. A Butler matrix for simple beam switching in the far‐field is also integrated within the compact antenna structure to provide the needed phased array operation. The total size of the two proposed systems with their feed networks are 55.2 × 55 × 0.13 mm3 and 53.7 × 61.2 × 0.13 mm3, respectively. These new travelling‐wave switched beam arrays can be placed within current handheld mobile devices for high bandwidth short range communications enabling 5G technologies. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:1917–1921, 2016