bluuebunny/crossref_metadata_2025_split huggingface dataset:
Photosalient Effect of a Diarylethene with a Perfluorocyclohexene Ring
Authors: Hatano Eri , Morimoto Masakazu , Hyodo Kengo , Yasuda Nobuhiro , Yokojima Satoshi , Nakamura Shinichiro , Uchida Kingo 
Published: July 2016

AbstractCrystals of a diarylethene with a perfluorocyclohexene ring exhibit a remarkable photosalient effect upon UV light irradiation that is attributed to the structural changes that occur when going from open‐ to closed‐ring isomers in the crystalline state, together with the existence of two conformers with different photoconversions compared with those of a perfluorocyclopentene derivative. Our current results give a design principle for molecular structures so as to achieve the photosalient effect for photochromic crystals.
ChemInform Abstract: Synthesis, Structural Study and Validation of a Layered Triple‐bis‐molybdate Ag0.6Na0.4Fe(MoO4)2 Related to Yavapaiite.
Authors: Souilem Amira , Zid Mohamed Faouzi 
Published: July 2016

AbstractThe title compound is prepared by solid state reaction of AgNO3, Na2CO3, (NH4)2Mo4O13, and FeNO3 in a molar ratio of 1:1:2:3, resp.
ChemInform Abstract: Investigation of Physical and Electrochemical Properties of β‐TaxNb1‐xPO5 as an Electrode Material for Lithium Batteries.
Authors: Lu Matthew Y. , Badway Fadwa , Kim Joshua R. , Amatucci Glenn G. 
Published: July 2016

AbstractIn order to improve the cycling stability of β‐NbPO5 due to the avoidance of lower voltage irreversible structural transitions, at least 5% Ta5+ is incorporated in β‐NbPO5.
ChemInform Abstract: Synthesis, Crystal Structure, Electrical Properties, and Sodium Transport Pathways of the New Arsenate Na4Co7(AsO4)6.
Authors: Ben Smida Youssef , Marzouki Riadh , Georges Samuel , Kutteh Ramzi , Avdeev Maxim , Guesmi Abderrahmen , Zid Mohamed Faouzi 
Published: July 2016

AbstractPink single crystals of the new title compound are prepared by solid state reaction of NaNO3, Co(NO3)2, and NH4H2AsO4 in a molar ratio of 2:1:2 (porcelain boat, 350 °C for 24 h and 750 °C for 3 d).
ChemInform Abstract: An Aromatic Ion Platform for Enantioselective Broensted Acid Catalysis.
Authors: Gheewala Chirag D. , Collins Bridget E. , Lambert Tristan H. 
Published: July 2016

AbstractA novel chiral Broensted acid is prepared in one step from (‐)‐menthol and readily available pentacarbomethoxycyclopentadiene and utilized in both Mukaiyama—Mannich and oxocarbenium aldol reactions with high efficiency and enantioselectivity.
ChemInform Abstract: Visible‐Light‐Induced Alkoxyl Radical Generation Enables Selective C(sp3)—C(sp3) Bond Cleavage and Functionalizations.
Authors: Jia Kunfang , Zhang Fuyuan , Huang Hanchu , Chen Yiyun 
Published: July 2016

AbstractThe visible‐light‐induced alcohol oxidation generates alkoxyl radicals through cyclic iodine(III) reagent catalysis.
ChemInform Abstract: Amidation of 1,3‐Diarylallylic Compounds Catalyzed by 2,3‐Dichloro‐5,6‐dicyano‐1,4‐benzoquinone with Molecular Oxygen as the Terminal Oxidant.
Authors: Cheng Dongping , Zhou Xiayi , Yuan Kun , Yan Jizhong 
Published: July 2016

AbstractDiarylpropenes undergo amidation reactions with carboxamides, sulfonamides, carbamates, and amination with anilines.
ChemInform Abstract: A Highly Stable but Highly Reactive Zinc Catalyst for Transesterification Supported by a Bis(imidazole) Ligand.
Authors: Nakatake Daiki , Yokote Yuki , Matsushima Yoshimasa , Yazaki Ryo , Ohshima Takashi 
Published: July 2016

AbstractA highly stable bis(imidazole)/zinc catalyst for transesterification is developed.
ChemInform Abstract: The Barbier—Grignard‐Type Arylation of Ketones and Unexpected Cross‐Coupling of Phenolic Ketones Using Unactivated Aryl Bromides.
Authors: Wen Yunming , Chen Guifang , Huang Shiqiang , Tang Yu , Yang Jun , Zhang Yuanming 
Published: July 2016

AbstractThe Barbier—Grignard reaction of aryl bromides with cyclohexanone (I) and various alkyl and/or aryl ketones (IV) is achieved in the presence of a three‐component catalyst mixture.
ChemInform Abstract: Enantiospecific Alkynylation of Alkylboronic Esters.
Authors: Wang Yahui , Noble Adam , Myers Eddie L. , Aggarwal Varinder K. 
Published: July 2016

AbstractVinyl bromide (II) and carbamate (XIII) are applied as alkyne precursors in the enantioselective transformation of the title compounds to the corresponding terminal as well as internal alkynes.
ChemInform Abstract: From Umpolung to Alternation: Modified Reactivity of Donor—Acceptor Cyclopropanes Towards Nucleophiles in Reaction with Nitroalkanes.
Authors: Budynina Ekaterina M. , Ivanov Konstantin L. , Chagarovskiy Alexey O. , Rybakov Victor B. , Trushkov Igor V. , Melnikov Mikhail Ya. 
Published: July 2016

AbstractThe reaction between various aryl substituted donor‐acceptor cyclopropanes and nitromethane or ethane provides γ‐nitroesters which are used as substrates for oxopyrrolidinecarboxylates.
ChemInform Abstract: A Novel Acid‐Catalyzed Rearrangement of 2‐Substituted‐3‐(2‐nitrophenyl)oxiranes for the Synthesis of Di‐ and Mono‐Oxalamides.
Authors: Mamedov Vakhid A. , Mamedova Vera L. , Khikmatova Gul'nas Z. , Mironova Ekaterina V. , Krivolapov Dmitry B. , Bazanova Olga B. , Chachkov Denis V. , Katsyuba Sergey A. , Rizvanov Il'dar Kh. , Latypov Shamil K. 
Published: July 2016

AbstractThe novel rearrangement of oxirane carboxamide derivatives proceeds through an one‐pot three‐step cascade sequence involving the classical Meinwald rearrangement with the formation of ketone bearing an active α‐methylene group, a transformation of the carbonyl group to the carboxylic functionality and finally a migration of the active α‐methylene group to the nitrogen atom of the reduced nitro group.
ChemInform Abstract: Acid‐Promoted Bicyclization of Arylacetylenes to Benzobicyclo[3.2.1]octanes Through Cationic Rearrangements.
Authors: Su Xiang , Sun Yihua , Yao Jiannian , Chen Hui , Chen Chao 
Published: July 2016

AbstractThe TfOH‐mediated bicyclization of arylacetylenes (I) and (III) leads to desired benzobicyclo[3.2.1]octanes (II) and (IV) in moderate to high yields.
ChemInform Abstract: Sequential [3,3]‐Sigmatropic Rearrangement/Nucleophilic Arylation of N‐(Benzoyloxy)enamides Towards the Preparation of Cyclic β‐Aryl‐β‐amino Alcohols.
Authors: Sato Shohei , Takeda Norihiko , Ueda Masafumi , Miyata Okiko 
Published: July 2016

AbstractTriarylaluminum and furyl/thienyl‐dimethylaluminum reagents are applied to construct the title compounds with high diastereoselectivities.
ChemInform Abstract: Iron‐Catalyzed Sonogashira Type Cross‐Coupling Reaction of Aryl Iodides with Terminal Alkynes in Water under Aerobic Conditions.
Authors: Sindhu Kallikkakam S. , Thankachan Amrutha P. , Thomas Anns Maria , Anilkumar Gopinathan 
Published: July 2016

AbstractA green protocol is presented for the iron catalyzed coupling reaction in water and under aerobic conditions.
ChemInform Abstract: Palladium Catalyzed Carboannulation of Nitrostyrenes with Internal Alkynes: A New Synthetic Strategy for Cross Coupling/C—H Annulation and Facile Access to Indenones.
Authors: Kashanna Jajula , Nagaraju Koppanathi , Kumara Swamy K. C. 
Published: July 2016

Abstract2‐Iodonitrostyrenes and nitrostyrenes undergo a Pd‐catalyzed carboannulation with internal alkynes to form indenones.
ChemInform Abstract: Isocyanide‐Based Three Component Reaction for Synthesis of Highly Cyano Substituted Furan Derivatives.
Authors: Safaei Hamid Reza , Dehbozorgi Farbod 
Published: July 2016

AbstractA clean, simple, and environmentally friendly one‐pot method (no solvent, no catalysts) to prepare 2‐phenyl‐2,3,3‐tricyano‐4‐aryl‐5‐alkylamino‐2,3‐dihydrofurans from benzoyl cyanide, arylidenemalonodinitriles, and alkyl isocyanides is presented.
ChemInform Abstract: Domino Synthesis of Tetrasubstituted Thiophenes from 1,3‐Enynes with Mercaptoacetaldehyde.
Authors: Bharathiraja Ganesan , Sathishkannan Gopal , Punniyamurthy Tharmalingam 
Published: July 2016

AbstractThe reaction proceeds via a Michael addition, 5‐exo‐dig carboannulation, and oxidation sequence.
ChemInform Abstract: I2‐Mediated Regioselective C‐3 Azidation of Indoles.
Authors: Prasad Pragati K. , Kalshetti Rupali G. , Reddi Rambabu N. , Kamble Sanjay P. , Sudalai Arumugam 
Published: July 2016

AbstractAn efficient, highly regioselective azidation of indoles is presented to give 3‐azidoindoles under metal‐free conditions at room temperature.
ChemInform Abstract: Copper(I) Oxide‐Mediated Cyclization of o‐Haloaryl N‐Tosylhydrazones: Efficient Synthesis of Indazoles.
Authors: Tang Meng , Kong Yuanfang , Chu Bingjie , Feng Dan 
Published: July 2016

AbstractThe synthesis of indazoles from E/Z‐mixtures of o‐haloraryl‐N‐sulfonylhydrazones is reported.
ChemInform Abstract: Tandem gem‐Dichlorination and Nitrile Oxide Generation from Chlorochromene Aldoximes: Synthesis of a New Class of Room Temperature Fluxional 4‐Chromanone Derivatives.
Authors: Dash Ashutosh K. , Jaladanki Chaitanya K. , Maiti Dilip K. , Singh Deepika , Tripathi Anil K. , Gupta Vivek K. , Bharatam Prasad V. , Mukherjee Debaraj 
Published: July 2016

AbstractN‐Chlorosuccinimide is used for the geminal dichlorination which proceeds in a tandem one‐pot approach together with a cyclization with terminal alkynes or alkenes to give dichlorochromanone isoxazole and isoxazoline derivatives.
ChemInform Abstract: Choline Chloride and Itaconic Acid‐Based Deep Eutectic Solvent as an Efficient and Reusable Medium for the Preparation of 13‐Aryl‐5H‐dibenzo[b,i]xanthene‐5,7,12,14(13H)‐tetraones.
Authors: Liu Peng , Hao Jian‐Wu , Liang Shao‐Juan , Liang Guang‐Li , Wang Jin‐Yu , Zhang Zhan‐Hui 
Published: July 2016

AbstractThe title compounds are prepared by metal‐free condensation of hydroxynaphthalenedione with various aromatic aldehydes using choline chloride/itaconic acid as efficient catalyst and reaction medium.
ChemInform Abstract: Transition Metal‐Free Homocoupling of Unactivated Electron‐Deficient Azaarenes.
Authors: Xie Wen‐Wen , Liu Yue , Yuan Rui , Zhao Dan , Yu Tian‐Zhi , Zhang Jian , Da Chao‐Shan 
Published: July 2016

AbstractA first direct homocoupling of electron‐deficient azaarenes is achieved in the presence of 2,2,6,6‐tetramethylpiperidinylmagnesium chloride and TMEDA.
ChemInform Abstract: Introduction of a Novel Nanosized N‐Sulfonated Broensted Acidic Catalyst for the Promotion of the Synthesis of Polyhydroquinoline Derivatives via Hantzsch Condensation under Solvent‐Free Conditions.
Authors: Goli‐Jolodar Omid , Shirini Farhad , Seddighi Mohadeseh 
Published: July 2016

AbstractThe applied catalyst can be reused several times and provides various advantages, such as nano size, high polarity, and simplicity in the preparation procedure.
ChemInform Abstract: Remote C—H Activation of Quinolines Through Copper‐Catalyzed Radical Cross‐Coupling.
Authors: Xu Jun , Shen Chao , Zhu Xiaolei , Zhang Pengfei , Ajitha Manjaly J. , Huang Kuo‐Wei , An Zhongfu , Liu Xiaogang 
Published: July 2016

AbstractVarious N‐aryloyl or N‐alkyl protected 8‐aminoquinolines are efficiently sulfonylated in position 5 using a broad range of aryl or hetaryl sulfonyl chlorides.
ChemInform Abstract: Synthesis and Fluorosolvatochromism of 3‐Arylnaphtho[1,2‐b]quinolizinium Derivatives.
Authors: Pithan Phil M , Decker David , Sardo Manlio Sutero , Viola Giampietro , Ihmels Heiko 
Published: July 2016

AbstractThe title quinolizinium derivatives (III), obtained by a simple Suzuki—Miyaura coupling reaction, exhibit pronounced fluorosolvatochromic properties.
ChemInform Abstract: Enantioselective Synthesis of Tetrahydroindolizines via Ruthenium‐Chiral Phosphoric Acid Sequential Catalysis.
Authors: Zhou Yong , Liu Xiao‐Wei , Gu Qing , You Shu‐Li 
Published: July 2016

AbstractA chiral BINOL‐derived phosphoric acid ligand and Ru complex Zhan‐1B catalyze sequential olefin cross‐metathesis and asymmetric intramolecular Friedel‐Crafts alkylation reactions in modest to good yields with good enantioselectivities.
ChemInform Abstract: A Novel and Efficient Strategy Involving a CuI Catalyzed Cascade Reaction to Synthesize Acenaphtho[1,2‐b]quinoline Derivatives.
Authors: Yang Hong‐Kun , Tong Yuan‐Feng , Wu Song 
Published: July 2016

AbstractThe title compounds are synthesized from 8‐substituted phenylethynyl‐1‐naphthaldehydes and substituted anilines.
ChemInform Abstract: Oxidative Rearrangement via in situ Generated N‐Chloroamine: Synthesis of Fused Tetrahydroisoquinolines.
Authors: Murai Kenichi , Matsuura Kei , Aoyama Hiroshi , Fujioka Hiromichi 
Published: July 2016

AbstractA series of spiro‐tetrahydroisoquinoline substrates is transformed to the heterocyclic title scaffold via N‐chloroamines, generated in situ (mechanism).
ChemInform Abstract: An Efficient One‐Pot Synthesis of 2‐Amino‐1,3,4‐selenadiazoles.
Authors: Li Xue , Gan Bin , Xie Tinghui , Yang Ping , Xie Yuanyuan 
Published: July 2016

AbstractThe title compounds are prepared by efficient one‐pot, three‐component reaction of various isoselenocyanates, hydrazine hydrate, and aromatic aldehydes.
ChemInform Abstract: Microwave‐Assisted One‐Pot Synthesis of Steroid—Quinoline Hybrids and an Evaluation of Their Antiproliferative Activities on Gynecological Cancer Cell Lines.
Authors: Baji Adam , Gyovai Andras , Woelfling Janos , Minorics Renata , Ocsovszki Imre , Zupko Istvan , Frank Eva 
Published: July 2016

AbstractThe title hybrids are efficiently prepared in one‐pot from the corresponding β‐chlorovinyl aldehydes with different arylamines under microwave irradiation without catalyst.
ChemInform Abstract: Synthesis, Characterization, and Catalytic Evaluation of Hierarchical Faujasite Zeolites: Milestones, Challenges, and Future Directions
Authors: Verboekend D. , Nuttens N. , Locus R. , Van Aelst J. , Verolme P. , Groen J. C. , Perez‐Ramirez J. , Sels B. F. 
Published: July 2016

AbstractReview: 111 refs.
Evaluation of Electron Donation as a Mechanism for the Stabilisation of Chalcogenate‐Protected Gold Nanoclusters
Authors: Segala Maximiliano , Schneider Felipe S. S. , Caramori Giovanni F. , Parreira Renato L. T. 
Published: July 2016

AbstractModels based on Au(111) face have been extensively used to describe self‐assembled monolayers, as well nanoparticles and nanoclusters. However, for very small clusters (<2 nm), the chemisorption of ligands leads to surface reconstruction, making necessary the use of a more reliable model that is able to simulate the main electronic and geometrical features of these small systems. In this work, a simple model to describe the geometries and the metal–ligand bonding in chalcogenate‐protected gold nanoclusters is proposed. Three different models with Aun+ and [XCH3]− (n=10, 15, 19, 22 and X=S, Se, Te) are used in this work. The obtained structures are in close agreement not only with the available crystallographic data, but also with much more expensive computational procedures, confirming that the proposed models are robust enough to describe the metal–ligand bonding. The results reveal that the Au–X distances are dependent on both the nature of the chalcogen and the coordination mode. The shortest Au–X distances are observed in the face‐centred cubic mode, indicating that the central gold atom seems to play a role in determining the adsorption strength. The proposed models show unambiguously chalcogen→cluster σ‐donation, as supported by energy decomposition analysis coupled with the natural orbitals for chemical valence and natural bond orbital analyses. In all cases, the metal–ligand interactions are characterised as being more covalent than electrostatic.
Breeding in a den of thieves: pros and cons of nesting close to egg predators
Authors: de Fouw Jimmy , Bom Roeland A. , Klaassen Raymond H. G. , Müskens Gerard J. D. M. , de Vries Peter P. , Popov Igor Yu. , Kokorev Yakov I. , Ebbinge Barwolt S. , Nolet Bart A. 
Published: July 2016

AbstractBreeding success of many Arctic‐breeding bird populations varies with lemming cycles due to prey switching behavior of generalist predators. Several bird species breed on islands to escape from generalist predators like Arctic foxVulpes lagopus, but little is known about how these species interact. We studied brent geeseBranta bernicla berniclathat share islands with gulls (Larusspec.) in Taimyr, Siberia (Russia). On one hand, gulls are egg predators, which occasionally steal an egg when incubating geese leave the nest for foraging bouts. On the other hand, gulls import marine resources to the islands, enriching the soil with their guano. We considered three hypotheses regarding clutch size of brent geese after partial nest predation. According to the “predator proximity hypothesis”, clutch size is expected to be smallest close to gulls, because of enhanced predator exposure. Conversely, clutch size is expected to be largest close to gulls, because of the supposedly better feeding conditions close to gulls, which might reduce nest recess times of geese and hence egg predation risk (“guano hypothesis”). Furthermore, gulls may defend their nesting territory, and thus nearby goose nests might benefit from this protection against other gulls (“nest association hypothesis”). We mapped goose and gull nests toward the end of the goose incubation period. In accordance with the latter two hypotheses, goose clutch size decreased with distance to the nearest gull nest in all but the lemming peak year. In the lemming peak year, clutch size was consistently high, indicating that partial nest predation was nearly absent. By mapping food quantity and quality, we found that nitrogen availability was indeed higher closer to gull nests, reflecting guanofication. Unlike predicted by the nest association hypothesis, a predation pressure experiment revealed that egg predation rate decreased with distance to the focal gull nests. We therefore propose that higher food availability close to gulls enables female geese to reduce nest recess time, limiting egg predation by gulls.
Modeling of the Reduction of Hematite in the Chemical Looping Combustion of Methane using Barracuda
Authors: Breault Ronald W. , Monazam Esmail R. 
Published: July 2016

AbstractChemical looping combustion is a promising technology for the capture of CO2, which involves the reduction and oxidation of materials known as oxygen carriers. One particular carrier is hematite as it is readily available, relatively inexpensive, and nontoxic. We present a new particle model and reaction kinetics that can be applied to Barracuda simulations of the fuel reactor. This was performed as Barracuda does not allow for the Johnson–Mehl–Avrami (JMA) (nucleation and growth)‐type kinetics that were developed from the results of an analytical study, thermogravimetric analysis, and fixed‐bed experiments. We summarize the analytical analysis of the fixed‐bed reduction experiments conducted in a cycling fixed‐bed reactor and subsequently modeled with Barracuda computational fluid dynamics software to develop the new model. The experiments were conducted using 1000 g of hematite material. The cyclic processing began with the reduction step then proceeded to the oxidation step, and this analysis was repeated for several cycles (5–10). The effect of fuel partial pressure (8.4, 7.2, and 5 mol %) on the conversion was investigated. The JMA analysis assumed that the reactions occurred in the shell that surrounds the particle grains with the diffusion of oxygen to the grain surface from the core. In contrast, working with the particle kinetics allowed in Barracuda, the reactions occur with different hematite species (surface and core) mixed homogeneously. Therefore, it is necessary to develop a new particle model in which the rates are related to the amount of reactant (surface or core) in the particle. We present the development of such a particle model and compare the results with experimental values.
Fuel Cell Lifespan Optimization by Developing a Power Switch Fault‐Tolerant Control in a Floating Interleaved Boost Converter
Authors: Guilbert D. , N'Diaye A. , Luberda P. , Djerdir A. 
Published: July 2016

AbstractIn recent years, fault tolerance has gained a growing interest from the scientific community, particularly in DC/DC converters. Generally, fault‐tolerance refers to a fault‐tolerant topology and/or control for power converters. In this paper, a floating interleaved boost converter (FIBC) is used in order to meet the fuel cell requirements, particularly in terms of input current ripple reduction and reliability. In DC/DC converters, power switches are ranked as the most fragile components. The most common failures in power switches are open‐circuit faults (OCFs), gating faults and short‐circuit faults (SCFs). The loss of one leg in case of OCF or SCF (considering that the faulty leg is isolated before damaging the system) leads up to the drastic increase of the fuel cell current ripple and consequently fuel cell lifespan reduction. The purpose of this paper is to present a fast and efficient power switch open‐circuit fault detection algorithm and fault‐tolerant control (FTC). The performances of the developed fault detection algorithm and FTC are validated by carrying out experimental tests between a proton exchange membrane fuel cell and a FIBC topology. The experimental results demonstrate the ability of the developed FTC to reduce drastically the fuel cell current ripple while improving the fuel cell lifespan.
Key Role of Desert–Oasis Transitional Area in Avoiding Oasis Land Degradation from Aeolian Desertification in Dunhuang, Northwest China
Authors: Zhang Kecun , An Zhishan , Cai Diwen , Guo Zichen , Xiao Jianhua 
Published: July 2016

AbstractThe survival of oasis is partially determined by the evolution of desert–oasis transitional area (abbr. DOTA) characterized by fragile and unstable environments. This study reveals the function of DOTA in avoiding oasis land degradation from its aeolian environments based on the detailed wind data, in situ observation of wind‐blown sand and granular characteristics of surface sediments from desert to oasis. Results indicate that the DOTA has buffering function in slowing down aeolian desertification in oasis. Additionally, the annual mean wind speed reduces 40·8% from desert to DOTA area but up to 92·8% from desert to oasis. The frequency of sand‐laden wind, drift potential and sand transport all decrease following the section from desert to oasis while surface roughness increases. And the granular characteristics of surface sediments show that the weight percentage of coarse sand decreases but fine sand increases along the section from desert to oasis. This paper reveals that the aeolian environments are of great difference between desert and DOTA and the significant role of DOTA in protecting oasis. Integrated sand control system needs to be settled in the DOTA to strengthen its buffering function. Copyright © 2016 John Wiley & Sons, Ltd.