bluuebunny/crossref_metadata_2025_split huggingface dataset:
ChemInform Abstract: Synthesis of 2‐(N′‐Arylthioureido)styrenes as Suitable Intermediates for Preparation of Heterocyclic Compounds.
Authors: GONDA J. 
Published: May 2016

AbstractThe addition reaction of the isocyanatobenzyltriphenylphosphonium bromide (I) with anilines (II) gives the arylthioureido‐substituted derivatives (III) which undergo Wittig reaction with formaldehyde (IV) to yield the styrenes (V) mentioned in the title.
ChemInform Abstract: Reaction of Allylstannanes with Cationic α,β‐Unsaturated Alkoxycarbeneiron Complexes.
Authors: HERNDON J. W. , WU C. 
Published: May 2016

AbstractMethylation of the acyliron complexes (I) with dimethoxycarbenium hexafluorophosphate, generated in situ from triphenylcarbenium hexafluorophosphate (III) and trimethyl orthoformate (II), yields the carbene complexes (IV) which are coupled in situ with the allylstannanes (V) and then demethylated to produce the hexenoyliron complexes (VII).
ChemInform Abstract: The Heteronuclear Cluster Chemistry of the Group IB Metals. Part 14. The Influence of the P(CH2Ph)3 Ligand on the Metal Framework Structures Adopted by Mixed‐Metal Clusters Containing M(P(CH2Ph)3) (M: Cu or Ag) Fragments. Crystal Structures of (Cu2Ru4(μ3‐H)2(CO)12(μ‐P(CH2Ph)2(η2‐CH2Ph))) and (Cu2Ru4(μ3‐H)2(CO)12(P(CH2Ph)3)2).
Authors: BROWN C. J. , MCCARTHY P. J. , SALTER I. D. , ARMSTRONG K. P. , MCPARTLIN M. , POWELL H. R. 
Published: May 2016

AbstractTreatment of the Ru4 cluster (I) with two equiv. Cu salt (II) or (Ag(NCMe)4)PF6, followed by the addition of two equiv. of the phosphane (III) affords the novel mixed‐metal clusters (IV) (space group P1, Z=2) and (V), respectively.
ChemInform Abstract: A Novel Coordination Mode for Dithiatetrazocines: Preparation, X‐Ray Structure, and Fluxional Behavior of (Pt(PPh3)(1,5‐Ph4P2N4S2))2.
Authors: CHIVERS T. , EDWARDS M. , KAPOOR P. N. , MEETSMA A. , VAN DE GRAMPEL J. C. , VAN DER LEE A. 
Published: May 2016

AbstractThe thermal decomposition of the diphosphadithiatetrazocine‐Pt complex (I) results in the S‐S bond cleavage of the ligand, the dissociation of PPh3, and the formation of the binuclear complex (II) (space group P21/c, Z=2).
ChemInform Abstract: Hydrogen‐Rich Metal Cluster Complexes. Hexahydrido Platinum‐Osmium Carbonyl Cluster Complexes from the Reaction of Pt2Os4(CO)18 with Hydrogen.
Authors: ADAMS R. D. , CHEN G. , KATAHIRA D. A. , TANNER J. T. , WU W. 
Published: May 2016

AbstractThe two clusters (I) (yield 32%) and (II) (11%) (for both space group P21/n, Z=4) are obtained by reaction of Pt2Os4(CO)18 with H2 (100 atm, 25 °C) in CH2Cl2.
ChemInform Abstract: Intramolecular Condensation of Steroidal 17α‐Formyl 17β‐Acetates: Synthesis of 14‐Functionalized 17‐Spirolactones.
Authors: BULL J. R. , STEER L. M. , DILLEN J. L. M. 
Published: May 2016

AbstractOn treatment with a base, the aldehyde (I) undergoes the expected intramolecular condensation to yield a mixture of the diastereomeric hemiacetals (II).
ChemInform Abstract: Acylation of 6‐Deoxy‐L‐hexoses: Regioselectivity in the Enzymatic Transesterfication as Compared to Chemical Esterification.
Authors: CIUFFREDA P. , RONCHETTI F. , TOMA L. 
Published: May 2016

AbstractEsterification of methyl α‐L‐rhamnopyranoside (I) with butyryl chloride (II) gives a complex mixture of mono‐ (IIIa) ‐ (IIIc), di‐ (IIId) ‐(IIIf), and triesters (IIIg).
ChemInform Abstract: New Stereospecific Ring Closure Reaction of 1,2‐Diaxial Azido Alcohols.
Authors: SIMON C. , MAKLEIT S. 
Published: May 2016

AbstractSubstitution reaction of 14‐bromoisocodeine 6‐(p‐nitrobenzoate) (I) with azide (II) results in the predominant formation of the 7α‐azidoneopine (III) which is hydrolyzed with bases, yielding the α‐azido alcohol (V).
ChemInform Abstract: Microbial Oxidation in Synthesis: Concise Preparation of (+)‐Conduritol F from Benzene.
Authors: LEY S. V. , REDGRAVE A. J. 
Published: May 2016

AbstractThe cis‐cyclohexadienediol (I), prepared from benzene by microbial oxidation with Pseudomonas putida in a literature‐known manner, is esterified and then oxidized to give the cyclic epoxy carbonate (IV) which reacts with (R)‐(+)‐sec‐phenethyl alcohol (V), forming a 1:1‐mixture of the diastereomeric ethers (VI) and (VII).
ChemInform Abstract: Studies on FK482. Part 2. Synthesis and Structure‐Activity Relationships of 7β‐(Z‐2‐(2‐Aminothiazol‐4‐yl)‐2‐Substituted‐acetamido)‐3‐vinyl‐3‐cephem‐4‐# carboxylic Acid Derivatives.
Authors: INAMOTO Y. , CHIBA T. , SAKANE K. , KAMIMURA T. , TAKAYA T. 
Published: May 2016

AbstractThe antibacterial effects of the title compounds (V) ‐ (VII) are tested.
ChemInform Abstract: Novel 2‐Methyl‐1‐oxacephalosporins. Part 1. Synthesis of 2‐Methyl‐3‐nor‐1‐oxacephem Nucleus.
Authors: OKONOGI T. , SHIBAHARA S. , MURAI Y. , INOUYE S. , KONDO S. , CHRISTENSEN B. G. 
Published: May 2016

AbstractThe α‐diazo β‐keto esters (XII), prepared from the chiral oxadiazabicycloheptenone (I) as outlined in the reaction scheme, undergo rhodium(II)‐catalyzed ring closure to produce the unstable dihydrooxazinones (XIII).
ChemInform Abstract: Biocatalytic‐Based Synthesis of Optically Pure (C‐6)‐Functionalized 1‐(tert‐Butyldimethylsilyloxy)‐2‐methyl‐(E)‐2‐heptenes.
Authors: LIANG S. , PAQUETTE L. A. 
Published: May 2016

AbstractSulcatol (±)‐(I), the aggregation pheromone of the ambrosia beetles Gnathotricus sp., is split up into its optical isomers by controlled lipase hydrolysis of its chloroacetate (±)‐(III).
ChemInform Abstract: Long‐Range Intramolecular Electron Transfer Between Two Naphthalene π‐Moieties Attached to a Rigid Norbornylogous Spacer of Variable Length: An ESR and ENDOR Study.
Authors: GERSON F. , WELLAUER T. , OLIVER A. M. , PADDON‐ROW M. N. 
Published: May 2016

AbstractIn contrast to the homoconjugatively delocalized species (I) with the counterion (K+) midway between the two naphthalene π‐moieties, the radical anions (II) and (III) form tight ion pairs in methyl‐THF indicating the unpaired electron being located on one π‐moiety.
ChemInform Abstract: The First Square‐Planar Complex of Cd(II): Cd(OAr)2(THF)2 Where OAr: 2,6‐Di‐tert.‐butylphenoxide. A Structure Governed by Two Strong Covalent and Two Weak Dative Bonds.
Authors: GOEL S. C. , CHIANG M. Y. , BUHRO W. E. 
Published: May 2016

AbstractThe title complex (I), obtained from Cd(N(SiMe3)2)2 and the aryl alcohol in THF, crystallizes in P21/n with Z=2.
ChemInform Abstract: A Simple Synthesis of 1‐(1,3‐Butadienyl) Carbonates and Carbamates.
Authors: DE CUSATI P. F. , OLOFSON R. A. 
Published: May 2016

AbstractThe aliphatic aldehydes (I) and (IV) as well as the ketone (VII) are converted to the corresponding enolates which then are coupled with the chloroformates (II) or (VIII) or the carbamoyl chloride (V) to give butadienyl compounds as shown in the reaction scheme.
ChemInform Abstract: Preparation and Characterization of Bimetallic Pd‐Cu Colloids by Thermal Decomposition of Their Acetate Compounds in Organic Solvents.
Authors: ESUMI K. , TANO T. , TORIGOE K. , MEGURO K. 
Published: May 2016

AbstractBimetallic Pd‐Cu/Cu2O colloids are prepared by refluxing (20 min) the corresponding acetates in methyl isobutyl ketone or in bromobenzene.
ChemInform Abstract: 1‐Ethynyl‐2,7‐dimethoxynaphthalene: An Example of Hydrogen Bonding Between an Ethynylic Hydrogen and a Methoxyl Oxygen.
Authors: PRINCE P. , FRONCZEK F. R. , GANDOUR R. D. 
Published: May 2016

AbstractThe title compound (I) (space group P1 with Z=4) is a building block in the preparation of dinaphthylethynes.
ChemInform Abstract: A Simple Approach to the Construction of Bicyclo(5.2.1) and (5.3.1) Ring Systems from Bicyclo(2.2.1)heptane Precursors.
Authors: SAHA G. , BHATTACHARYA A. , ROY S. S. , GHOSH S. 
Published: May 2016

AbstractThe cyclopentene‐1,2‐dicarboxylic acid anhydride (I) is submitted to cycloaddition reaction, subsequent anhydride hydrolysis, and reesterification to yield the tricyclic dicarboxylate (IV).
ChemInform Abstract: Crystal Structure of Zinc(bis(3‐(dimethylamino)propyl‐C,N)tin)bis(dibenzoylmethanato)‐(Sn‐Zn). The First Example of a Dialkyltin(II) Compound Stabilized by Sn‐Zn Coordination.
Authors: JASTRZEBSKI J. T. B. H. , SYPKENS H. A. J. , DES TOMBE F. J. A. , VAN DER SCHAAF P. A. , BOERSMA J. , VAN KOTEN G. , SPEK A. L. , DUISENBERG A. J. M. 
Published: May 2016

AbstractThe novel title complex (III) (C2/c, Z=4) is prepared by a transmetallation reaction.
ChemInform Abstract: (Tetrakis(2‐pyridylmethyl)ethylenediamine)iron(II) Perchlorate, the First Rapidly Interconverting Ferrous Spin‐Crossover Complex.
Authors: CHANG H.‐R. , MCCUSKER J. K. , TOFTLUND H. , WILSON S. R. , TRAUTWEIN A. X. , WINKLER H. , HENDRICKSON D. N. 
Published: May 2016

AbstractThe reaction of the hexadentate amine ligand with hydrated FeCl2 gives the title complex as a 2/3 H2O‐solvate, which crystallizes in C2/c with Z=12.
ChemInform Abstract: Phase Transitions in Strontium Perovskites. Studies of SrOsO3 Compared to Other 4d and 5d Perovksites.
Authors: Kennedy Brendan J. , Avdeev Maxim , Feng Hai L. , Yamaura Kazunari 
Published: May 2016

AbstractPolycrystalline SrOsO3 is prepared by hot‐press sintering and investigated using powder neutron diffraction at 5—300 K and powder synchrotron XRD at 80—870 K.
ChemInform Abstract: Single Crystal Magnetic Structure and Susceptibility of CoSe2O5.
Authors: Rodriguez Efrain E. , Cao Huibo , Haiges Ralf , Melot Brent C. 
Published: May 2016

AbstractSingle crystals of CoSe2O5 are grown by hydrothermal treatment of an aqueous solution of SeO2 and CoSO4 (autoclave, 200 °C, 2 d).
ChemInform Abstract: Intramolecular Hydroamination Reactions Catalyzed by Zirconium Complexes Bearing Bridged Bis(phenolato) Ligands.
Authors: Zhang Yu , Sun Qiu , Wang Yaorong , Yuan Dan , Yao Yingming , Shen Qi 
Published: May 2016

AbstractZirconium complexes stabilized by bis(phenolato) ligands are shown to possess good activities in catalyzing intramolecular hydroamination reactions.
ChemInform Abstract: Impregnated Palladium on Magnetite as Catalyst for Direct Arylation of Heterocycles.
Authors: Cano Rafael , Perez Juana M. , Ramon Diego J. , McGlacken Gerard P. 
Published: May 2016

AbstractThe direct arylation of heterocycles or the intramolecular arylation of haloethers (X) furnishes the products in good yields under relatively mild conditions.
ChemInform Abstract: Regiodefined Synthesis of Brominated Hydroxyanthraquinones Related to Proisocrinins.
Authors: Roy Joyeeta , Mal Tanushree , Jana Supriti , Mal Dipakranjan 
Published: May 2016

AbstractA regiospecific route to the scaffold of proisocrinin F via Hauser annulation of a dibromobenzoisofuranone with a cyclohexanone is shown.
ChemInform Abstract: Microwave‐Promoted, Catalyst‐Free, Multi‐Component Reaction of Proline, Aldehyde, 1,3‐Diketone: One Pot Synthesis of Pyrrolizidines and Pyrrolizinones.
Authors: Manjappa Kiran B. , Peng Yu‐Ting , Jhang Wei‐Fang , Yang Ding‐Yah 
Published: May 2016

AbstractWhen indene‐1,3‐diketones [e.g. (II)] are used, spiropyrolizidines [e.g. (IV) and (V)] are obtained.
ChemInform Abstract: Discovery of Pyrrolospirooxindole Derivatives as Novel Cyclin Dependent Kinase 4 (CDK4) Inhibitors by Catalyst‐Free, Green Approach.
Authors: Kamal Ahmed , Mahesh Rasala , Nayak V. Lakshma , Babu Korrapati Suresh , Kumar G. Bharath , Shaik Anver Basha , Kapure Jeevak Sopanrao , Alarifi Abdullah 
Published: May 2016

AbstractAmong the new pyrrolospirooxindole derivatives, compound (Vd) displays the highest cytotoxicity against the human prostate cancer (DU‐145).
ChemInform Abstract: N‐Heterocyclic Carbene‐Catalyzed [3 + 2] Annulation of Bromoenals with 3‐Aminooxindoles: Highly Enantioselective Synthesis of Spirocyclic Oxindolo‐γ‐Lactams.
Authors: Chen Kun‐Quan , Li Yao , Zhang Chun‐Lin , Sun De‐Qun , Ye Song 
Published: May 2016

AbstractA new [3 + 2] annulation of α‐bromoenals and 3‐aminooxindoles is reported.
ChemInform Abstract: Rapid Access to 2‐Methylene Tetrahydrofurans and γ‐Lactones: A Tandem Four‐Step Process.
Authors: Liang Renxiao , Chen Kai , Zhang Qiaohui , Zhang Jiantao , Jiang Huanfeng , Zhu Shifa 
Published: May 2016

AbstractThe reaction of enynals (I) with propynols (II) proceeds via hydrolysis, Knoevenagel condensation, Michael addition and Conia‐ene reaction to afford indanone‐fused 2‐methylene tetrahydrofurans (III), which are oxidized to α‐methylene γ‐lactones (IV).
ChemInform Abstract: Reagent‐Switch Controlled Metal‐Free Intermolecular Geminal Diamination and Aminooxygenation of Vinylarenes.
Authors: Venkatesan Balaji Pandur , Chandrasekaran Srinivasan 
Published: May 2016

AbstractA general protocol for the geminal diamination and an intermolecular metal‐free, geminal aminooxygenation of vinylarenes is presented.
ChemInform Abstract: Fluorescence and Phosphorescence of a Series of Silicon‐Containing Six‐Membered‐Ring Molecules.
Authors: Nakashima Takayuki , Shimada Masaki , Kurihara Yu , Tsuchiya Mizuho , Yamanoi Yoshinori , Nishibori Eiji , Sugimoto Kunihisa , Nishihara Hiroshi 
Published: May 2016

AbstractPd‐catalyzed coupling of 1,2‐bis(silyl)arenes with 1,2‐diiodoarenes provides access to various silicon‐containing six‐membered ring compounds.
ChemInform Abstract: Clinoposides A—F: Meroterpenoids with Protective Effects on H9c2 Cardiomyocyte from Clinopodium chinense.
Authors: Xu Xu‐Dong , et al.  
Published: May 2016

AbstractSix novel flavonoid‐triterpene saponin meroterpenoids, clinoposides A (I), B—F, are isolated and represent a novel class of isopentyl flavonoid saponins.
ChemInform Abstract: Electromagnetic Susceptibility Anisotropy and Its Importance for Paramagnetic NMR and Optical Spectroscopy in Lanthanide Coordination Chemistry
Authors: Blackburn Octavia A. , Edkins Robert M. , Faulkner Stephen , Kenwright Alan M. , Parker David , Rogers Nicola J. , Shuvaev Sergey 
Published: May 2016

AbstractReview: 103 refs.
ChemInform Abstract: Advances on Asymmetric Organocatalyzed Mannich Reactions in Aqueous and Non‐Aqueous Media
Authors: Ghosh Ayndrila , Bhowmick Sudipto , Mondal Anirban , Garai Harekrishna , Bhowmick Kartick C. 
Published: May 2016

AbstractReview: 104 refs.
A modular distributed simulation‐based architecture for intelligent transportation systems
Authors: De Grande Robson E. , Boukerche Azzedine , Guan Shichao , Aljeri Noura 
Published: May 2016

SummarySimulations have been used extensively for evaluating scenarios, which are very difficult, costly or impractical to implement in real systems. Testing in a synthetic, realistic environment provides a means to determine the viability of solutions. Simulations have proved to be very useful in the verification of algorithms and protocols, offering tools for testing them in different situations. The simulation of vehicular area networks pose additional challenges as realistic mobility models are crucial and must be incorporated in scenario elements while applications and communication protocols are tested. Several simulators and simulation frameworks have been designed that aim to synthetically reproduce communication and mobility of vehicles as realistically as possible. The majority of such simulators merge pre‐existing networking and mobility simulators, which add issues regarding compatibility and realism. Such simulators present limited run‐time 3D visualization tools, essential for providing immersive environments. Therefore, in this paper, we propose real‐time simulation and 3D visualization for vehicular networks of realistic scenarios. This proposed simulation system generates output in real time, making use of 3D‐modelled real‐world maps and effectively generating visualization as elements are updated in the simulation. Experiments have been conducted with simulation and visualization components to evaluate delays and performance of the proposed simulator. Copyright © 2016 John Wiley & Sons, Ltd.
Can Android VoIP voice conversations be decoded? I can eavesdrop on your Android VoIP communication
Authors: Pokharel Shasi , Choo Kim‐Kwang Raymond , Liu Jixue 
Published: May 2016

SummaryVoice over Internet Protocol (VoIP) is increasingly used by both individuals and corporate users. Recent studies had suggested that communications using VoIP apps may not be encrypted, although it has not been demonstrated that original conversations could be recovered from unencrypted communications that were subsequently intercepted. In this research, we propose a process for codec identification and decoding of captured communications from 15 popular Android VoIP apps. We are able to recover the original voice conversations from intercepted app‐to‐app voice calls of nine apps and app‐to‐phone calls from 10 apps. Copyright © 2016 John Wiley & Sons, Ltd.
Fast parallel skew and prefix‐doubling suffix array construction on the GPU
Authors: Wang Leyuan , Baxter Sean , Owens John D. 
Published: May 2016

SummarySuffix arrays are fundamental full‐text index data structures of importance to a broad spectrum of applications in such fields as bioinformatics, Burrows–Wheeler transform‐based lossless data compression, and information retrieval. In this work, we propose and implement two massively parallel approaches on the graphics processing unit (GPU) based on two classes of suffix array construction algorithms. The first, parallel skew, makes algorithmic improvements to the previous work of Deo and Keely to achieve a speedup of 1.45x over their work. The second, a hybrid skew and prefix‐doubling implementation, is the first of its kind on the GPU and achieves a speedup of 2.3–4.4x over Osipov's prefix‐doubling and 2.4–7.9x over our skew implementation on large datasets. Our implementations rely on two efficient parallel primitives, a merge and a segmented sort. We theoretically analyze the two formulations of suffix array construction algorithms and show performance comparisons on a large variety of practical inputs. We conclude that, with the novel use of our efficient segmented sort, prefix‐doubling is more competitive than skew on the GPU. We also demonstrate the effectiveness of our methods in our implementations of the Burrows‐Wheeler transform and in a parallel full‐text, minute‐space‐index for pattern searching. Copyright © 2016 John Wiley & Sons, Ltd.
Privacy‐preserving data search and sharing protocol for social networks through wireless applications
Authors: Wang Xiaofen , Mu Yi , Chen Rongmao 
Published: May 2016

SummaryData search and sharing are two important functionalities in social networks. The social network users can form a peer‐to‐peer group and securely and flexibly search and share cloud data through wireless applications. When the number of users increases, the communication, storage, and computational overheads will be increased, and the quality of services such as searching and data sharing for clients could be affected. In order to solve these problems, we formalize an ID‐based multi‐user searchable encryption (IDB‐MUSE) and formally define its security model, where the security notions accommodate indistinguishability against insider's keyword guessing attack, indistinguishability against chosen keyword attack, and indistinguishability against insider's identity guessing attack. We present an IDB‐MUSE scheme, where the index and search trapdoor are of constant size. We formally prove its security properties. To improve the search efficiency, we divide the computation of the trapdoor into two phases, that is, the offline phase and the online phase. The computation cost for the online phase trapdoor remains constant with respect to the number of users. Based on the IDB‐MUSE scheme, a privacy‐preserving data search and sharing protocol is proposed, where only the authorized user can access the shared group data. It captures the properties of source authenticity, data and search pattern privacy‐preserving, anonymity, and request unlinkability. The experimental results show that the protocol is practical for wireless applications. Copyright © 2016 John Wiley & Sons, Ltd.
A skip list for multicore
Authors: Dick Ian , Fekete Alan , Gramoli Vincent 
Published: May 2016

SummaryIn this paper, we introduce the Rotating skip list, the fastest concurrent skip list to date. Existing concurrent data structures experience limited scalability with the growing core count for two main reasons: threads contend while accessing the same shared data, and they require off‐chip communication to synchronize. Our solution combines the rotation of a tree to maintain logarithmic complexity deterministically, a skip list structure to avoid the tree root bottleneck, and no locks to limit cache line bouncing. This combination requires us to trade usual skip list towers for wheels, a novel algorithmic design that favors spatial locality and allows for a constant‐time restructuring operation. We evaluate the performance of our skip list on AMD Opteron and Intel Xeon multicores, show that its rotations guarantee its balance and compare its performance against seven state‐of‐the‐art skip lists and trees using four different synchronisation techniques. The Rotating skip list shows an unprecedented peak performance of 200 Mops/second. Copyright © 2016 John Wiley & Sons, Ltd.
Estimating the specific chemical exergy of municipal solid waste
Authors: Eboh Francis Chinweuba , Ahlström Peter , Richards Tobias 
Published: May 2016

AbstractA new model for predicting the specific chemical exergy of municipal solid waste (MSW) is presented; the model is based on the content of carbon, hydrogen, oxygen, nitrogen, sulfur, and chlorine on a dry ash‐free basis (daf). The proposed model was obtained from estimations of the higher heating value (HHV) and standard entropy of MSW using statistical analysis. The ultimate analysis of 56 different parts of MSW was used for the derivation of the HHV expression. In addition, 30 extra parts were used for validation. One hundred and seventeen relevant organic substances that represented the main constituents in MSW were used for derivation of the standard entropy of solid waste. The substances were divided into different waste fractions, and the standard entropies of each waste fraction and for the complete mixture were calculated. The specific chemical exergy of inorganic matter in the waste was also investigated by considering the inorganic compounds in the ash. However, as a result of the extremely low value calculated, the exergy of inorganic matter was ignored. The results obtained from the HHV model show a good correlation with the measured values and are comparable with other recent and previous models. The correlation of the standard entropy of the complete waste mixture is less accurate than the correlations of each individual waste fraction. However, the correlations give similar results for the specific chemical exergy, indicating that HHV has a greater impact when estimating the specific exergy of solid waste than entropy.