bluuebunny/crossref_metadata_2025_split huggingface dataset:
ChemInform Abstract: Cooperative Catalysis of Noncompatible Catalysts Through Compartmentalization: Wacker Oxidation and Enzymatic Reduction in a One‐Pot Process in Aqueous Media.
Authors: Sato Hirofumi , Hummel Werner , Groeger Harald 
Published: July 2015

AbstractA Wacker oxidation using CuCl/PdCl2 as the catalyst system is successfully combined with enzymatic ketone reduction to convert styrene enantioselectively into 1‐phenylethanol in a one‐pot process, although the two reactions conducted in aqueous media are not compatible due to enzyme deactivation by Cu ions.
ChemInform Abstract: Zinc(II)‐Catalyzed Intermolecular Hydrative Aldol Reactions of 2‐En‐1‐ynamides with Aldehydes and Water to Form Branched Aldol Products Regio‐ and Stereoselectively.
Authors: Jadhav Appaso Mahadev , Pagar Vinayak Vishnu , Huple Deepak B. , Liu Rai‐Shung 
Published: July 2015

AbstractBesides the 2‐en‐1‐ynamides, the ynamides (XIII) and (XV) can also be used as suitable substrates.
ChemInform Abstract: Structure—Reactivity Relationship of Trifluoromethanesulfenates: Discovery of an Electrophilic Trifluoromethylthiolating Reagent.
Authors: Shao Xinxin , Xu Chunfa , Lu Long , Shen Qilong 
Published: July 2015

AbstractA series of eight trifluoromethanesulfenates is prepared as trifluoromethylthiolating agents.
ChemInform Abstract: High Activity and Stability in the Cross‐Coupling of Aryl Halides with Disulfides over Cu‐Doped Hierarchically Porous Zeolite ZSM‐5.
Authors: Fu Wenqian , Liu Taotao , Fang Zhongxue , Ma Yuli , Zheng Xiang , Wang Wenchang , Ni Xiaojun , Hu Maolin , Tang Tiandi 
Published: July 2015

AbstractThe activity of the catalytic system is attributed to the structural characteristics of meso‐macropores and homogeneous dispersion of active Cuδ+ (δ<2) species in Cu‐ZSM‐5.
ChemInform Abstract: Monocarboxylation and Intramolecular Coupling of Butenylated Arenes via Palladium‐Catalyzed C—H Activation Process.
Authors: Liu Rui , Lu Ze‐Hai , Hu Xiao‐Hui , Li Jun‐Li , Yang Xian‐Jin 
Published: July 2015

AbstractA wide range of 2‐tetralyl carboxylic esters are synthesized by Pd‐catalyzed tandem carboxylation and direct intramolecular coupling using Selectfluor as oxidant under mild reaction conditions.
ChemInform Abstract: Stimuli‐Responsive Cyclopenta[ef]heptalenes: Synthesis and Optical Properties.
Authors: Ghazvini Zadeh Ebrahim H. , Woodward Adam W. , Richardson David , Bondar Mykhailo V. , Belfield Kevin D. 
Published: July 2015

AbstractA new approach to cyclopenta[ef]heptalenes (III) from naturally occurring guaiazulene is reported.
ChemInform Abstract: Synthesis of Functionalized γ‐Lactones via a Three‐Component Cascade Reaction Catalyzed by Consecutive N‐Heterocyclic Carbene Systems.
Authors: Zhao Qian , Han Bo , Wang Biao , Leng Hai‐Jun , Peng Cheng , Huang Wei 
Published: July 2015

AbstractThe first NHC‐catalyzed [3+2] annulation of α,β‐unsaturated acylazoliums with 1,2‐bisnucleophiles is described which proceeds efficiently starting from aryl aldehydes, but is not applicable to the transformation of alkyl aldehydes.
ChemInform Abstract: Asymmetric Organocatalytic Aza‐Michael Reactions of Isatin Derivatives.
Authors: Zari Sergei , Metsala Andrus , Kudrjashova Marina , Kaabel Sandra , Jaerving Ivar , Kanger Tonis 
Published: July 2015

AbstractA Schiff base isatin derivative serves as the substrate for the title reaction with unsaturated 1,4‐diketones and depending on the diketone substituents the products are obtained with high to excellent yields and moderate to high enantioselectivities.
ChemInform Abstract: Broensted Acid Catalyzed Asymmetric Diels—Alder Reactions: Stereoselective Construction of Spiro[tetrahydrocarbazole‐3,3′‐oxindole] Framework.
Authors: Wang Yang , Tu Man‐Su , Yin Lei , Sun Meng , Shi Feng 
Published: July 2015

AbstractUnless otherwise mentioned the products are obtained with <95:5 d.r.
ChemInform Abstract: Enantioselective Construction of Cyclic Indolyl α‐Amino Esters via a Friedel—Crafts Alkylation Reaction.
Authors: Wu Liang , Liu Ren‐Rong , Zhang Guoqi , Wang Dan‐Jie , Wu Hao , Gao Jianrong , Jia Yi‐Xia 
Published: July 2015

AbstractThe reactions of indoles and cyclic N‐sulfonyl α‐ketimino esters are catalyzed by a chiral Cu(OTf)2‐bisoxazoline complex and give the products in high yields and excellent enantioselectivities.
ChemInform Abstract: Enantioselective Synthesis of Functionalized Pyrazoles by NHC‐Catalyzed Reaction of Pyrazolones with α,β‐Unsaturated Aldehydes.
Authors: Yetra Santhivardhana Reddy , Mondal Santigopal , Suresh Eringathodi , Biju Akkattu T. 
Published: July 2015

AbstractConditions for the reaction of 3‐aryl, alkyl, or arenyl 1‐tert‐butyl‐4,5‐dihydro‐1H‐pyrazol‐5‐ones with 3‐aryl or 3‐alkyl propenals to form pyranone‐fused pyrazoles are developed, and the products are obtained with high yields and high enantioselectivities.
ChemInform Abstract: Access to Coumarins by Rhodium‐Catalyzed Oxidative Annulation of Aryl Thiocarbamates with Internal Alkynes.
Authors: Zhao Yingwei , Han Feng , Yang Lei , Xia Chungu 
Published: July 2015

AbstractA wide range of 3,4‐disubstituted coumarins are efficiently obtained by exploitation of a thiocarbamate group directed C—H bond activation, an annulation with an alkyne, and a desulfurization.
ChemInform Abstract: A Cascade Aza‐Cope/Aza‐Prins Cyclization Leading to Piperidine Derivatives.
Authors: Nallasivam Jothi L. , Fernandes Rodney A. 
Published: July 2015

AbstractA novel cascade aza‐Cope/aza‐Prins cyclization of homoallylamines (I) with formaldehyde and glyoxylic acid derivatives to give N‐substituted 4‐hydroxypiperidines is investigated.
ChemInform Abstract: Synthesis of 2,4‐Diarylsubstituted‐Pyridines Through a Ru‐Catalyzed Four Component Reaction.
Authors: Bai Yang , Tang Lichang , Huang Huawen , Deng Guo‐Jun 
Published: July 2015

AbstractStarting from acetophenones, DMF, and ammonium acetate the title reaction is performed.
ChemInform Abstract: Chitosan Catalyzed an Efficient, One Pot Synthesis of Pyridine Derivatives.
Authors: Siddiqui Zeba N. 
Published: July 2015

AbstractA facile solvent‐free protocol for the reaction of β‐enaminone (II) with a variety of active methylene compounds and ammonium acetate to afford pyridine derivatives in excellent yields is developed.
ChemInform Abstract: Metal‐Free Oxidative Functionalization of a C(sp3)—H Bond Adjacent to Nitrogen and Intramolecular Aromatic Cyclization for the Preparation of 6‐Amidophenanthridines.
Authors: Fang Hong , Zhao Jincan , Ni Shengyang , Mei Haibo , Han Jianlin , Pan Yi 
Published: July 2015

AbstractAmidophenanthridines are prepared from isocyanobiphenyls and amides via oxidative radical C—H bond functionalization and cyclization using tert‐butyl peroxybenzoate as oxidant.
ChemInform Abstract: Rhodium‐Catalyzed 1,4‐Addition of Arylboronic Acids to 3‐Benzylidene‐1H‐pyrrolo[2,3‐b]pyridin‐2(3H)‐one Derivatives.
Authors: Croix Cecile , Prie Gildas , Chaulet Charlotte , Viaud‐Massuard Marie‐Claude 
Published: July 2015

AbstractOrtho‐substituted aryl‐ as well as pyridylboronic acids do not react.
ChemInform Abstract: Expedient Synthesis of Pyrroloquinolinones by Rh‐Catalyzed Annulation of N‐Carbamoyl Indolines with Alkynes Through a Directed C—H Functionalization/C—N Cleavage Sequence.
Authors: Yang Xiao‐Fei , Hu Xu‐Hong , Loh Teck‐Peng 
Published: July 2015

AbstractVarious pyrroloquinolinone derivatives are efficiently obtained under redox neutral conditions without use of an external oxidant.
ChemInform Abstract: [4 + 2] Cycloaddition of in situ Generated 1,2‐Diaza‐1,3‐dienes with Simple Olefins: Facile Approaches to Tetrahydropyridazines.
Authors: Zhong Xingren , Lv Jian , Luo Sanzhong 
Published: July 2015

AbstractA wide range of 1,4,5,6‐tetrahydropyridazines are obtained in high yields via a catalyst‐free [4 + 2] annulation process under and mild reaction conditions.
ChemInform Abstract: An Efficient Catalyst‐Free Chemoselective Multicomponent Reaction for the Synthesis of Pyrimidine Functionalized Pyrrolo‐Anellated Derivatives.
Authors: Dommaraju Yuvaraj , Borthakur Somadrita , Rajesh Nimmakuri , Prajapati Dipak 
Published: July 2015

AbstractA wide range of the title compounds are obtained by catalyst‐free, one‐pot chemoselective multicomponent domino reaction under mild reaction conditions.
ChemInform Abstract: Iridium‐Catalyzed Intermolecular Dehydrogenative Silylation of Polycyclic Aromatic Compounds Without Directing Groups.
Authors: Murai Masahito , Takami Keishi , Takai Kazuhiko 
Published: July 2015

AbstractSelective mono‐ and bis‐silylation can be achieved by adjusting the molar ratio of the reactants.
ChemInform Abstract: Synthesis of C6‐Pyridylpurine Nucleosides by Reaction of Nebularine N1‐Oxide with Pyridinyl Grignard Reagents.
Authors: D'Errico Stefano , Oliviero Giorgia , Borbone Nicola , Nici Fabrizia , Piccialli Vincenzo , Pinto Brunella , D'Alonzo Daniele , Mayol Luciano , Piccialli Gennaro 
Published: July 2015

AbstractThe synthesis of the title compounds in moderate to good yields is reported.
ChemInform Abstract: Syntheses of a Pyrrolidine Analogue of a Tetrahydrofuran Containing Acetogenin, cis‐Solamin.
Authors: Hattori Yasunao , Ohnishi Kouji , Sakurai Haruka , Kobayashi Kazuya , Makabe Hidefumi , Teruya Kenta , Akaji Kenichi 
Published: July 2015

AbstractThe synthesis of aza‐cis‐solamin (III) is achieved using a palladium‐catalyzed diastereoselective cyclization of compound (I) as the key step to obtain the pyrrolidine fragment (II).
ChemInform Abstract: Synthesis of Many Different Types of Organic Small Molecules Using One Automated Process.
Authors: Li Junqi , Ballmer Steven G. , Gillis Eric P. , Fujii Seiko , Schmidt Michael J. , Palazzolo Andrea M. E. , Lehmann Jonathan W. , Morehouse Greg F. , Burke Martin D. 
Published: July 2015

AbstractSmall‐molecule synthesis usually relies on procedures that are highly customized for each target.
ChemInform Abstract: Reusable Directing Groups [8‐Aminoquinoline, Picolinamide, Sulfoximine] in C(sp3)—H Bond Activation: Present and Future
Authors: Rit Raja K. , Yadav M. Ramu , Ghosh Koushik , Sahoo Akhila K. 
Published: July 2015

AbstractReview: [47 refs.
Emotional attention for erotic stimuli: Cognitive and brain mechanisms
Authors: Sennwald Vanessa , Pool Eva , Brosch Tobias , Delplanque Sylvain , Bianchi‐Demicheli Francesco , Sander David 
Published: July 2015

ABSTRACTIt has long been posited that among emotional stimuli, only negative threatening information modulates early shifts of attention. However, in the last few decades there has been an increase in research showing that attention is also involuntarily oriented toward positive rewarding stimuli such as babies, food, and erotic information. Because reproduction‐related stimuli have some of the largest effects among positive stimuli on emotional attention, the present work reviews recent literature and proposes that the cognitive and cerebral mechanisms underlying the involuntarily attentional orientation toward threat‐related information are also sensitive to erotic information. More specifically, the recent research suggests that both types of information involuntarily orient attention due to their concern relevance and that the amygdala plays an important role in detecting concern‐relevant stimuli, thereby enhancing perceptual processing and influencing emotional attentional processes. J. Comp. Neurol. 524:1668–1675, 2016. © 2015 Wiley Periodicals, Inc.
Lineage sorting in multihost parasites: Eidmanniella albescens and Fregatiella aurifasciata on seabirds from the Galapagos Islands
Authors: Rivera‐Parra Jose L. , Levin Iris I. , Johnson Kevin P. , Parker Patricia G. 
Published: July 2015

AbstractParasites comprise a significant percentage of the biodiversity of the planet and are useful systems to test evolutionary and ecological hypotheses. In this study, we analyze the effect of host species identity and the immediate local species assemblage within mixed species colonies of nesting seabirds on patterns of genetic clustering within two species of multihost ectoparasitic lice. We use three genetic markers (one mitochondrial, COI, and two nuclear, EF1‐α and wingless) and maximum likelihood phylogenetic trees to test whether (1) parasites show lineage sorting based on their host species; and (2) switching of lineages to the alternate host species depends on the immediate local species assemblage of individual hosts within a colony. Specifically, we examine the genetic structure of two louse species: Eidmanniella albescens, infecting both Nazca (Sula granti) and blue‐footed boobies (Sula nebouxii), and Fregatiella aurifasciata, infecting both great (Fregata minor) and magnificent frigatebirds (Fregata magnificens). We found that host species identity was the only factor explaining the patterns of genetic structure in both parasites. In both cases, there is evident genetic differentiation depending on the host species. Thus, a revision of the taxonomy of these louse species is needed. One possible explanation of this pattern is extremely low louse migration rates between host species, perhaps influenced by fine‐scale spatial separation of host species within mixed colonies, and low parasite infrapopulation numbers.
Basic Investigation of Brain–Computer Interface Combined with Augmented Reality and Development of an Improvement Method Using the Nontarget Object
Authors: UNO KOSUKE , NAITO GENZO , TOBISA YOHEI , YOSHIDA LUI , OGAWA YUTARO , KOTANI KIYOSHI , JIMBO YASUHIKO 
Published: July 2015

SUMMARYBrain–computer interfaces (BCI) have been studied to allow handicapped people to communicate and control their environments. However, conventional BCIs require a determination of what objects are displayed as targets in advance. BCI combined with augmented reality (AR) can display suitable choices with consideration of real space and can allow users to control devices intuitively. However, little is known about how AR systems affect the accuracy of BCIs; significant factors that may be affected include the background of AR‐BCI derived from scenery and the change of the number of target choices. In this research, üwe confirm these two effects and develop a new method using a nontarget object when there is a small number of possible targets. The results show that the background has no effect, and that changing the target decreases the accuracy. However, the proposed method improves the accuracy of AR‐BCI.
Applying Component‐Based Technologies to Model‐Driven Software Development
Authors: MIZUNO TOMOKI , MATSUMOTO KEINOSUKE , MORI NAOKI 
Published: July 2015

SUMMARYImproving the reusability of models and increasing automatic code generation efficiency are problems in model‐driven development. In order to solve these problems, we apply component‐based development technologies that have mainly been developed at the software implementation level to the modeling level. In the proposed approach, functionally relevant model elements are packaged as a component, and the modeling of software is performed by associating them with the model components. The role of a model becomes clear by introducing the concept of a component, and the reusability of model components is improved by externalizing the dependencies between the components. In addition, flexible model transformation rules united with the roles of models can be designed. As a result, the proposed method is able to generate more source code automatically. The validity of the proposed approach is verified through application experiments.
Evaluation of the presence of streambed vegetation on storage and run‐off in hillslope streams in a High Arctic environment
Authors: Miller Elizabeth A. , Young Kathy L. 
Published: July 2015

AbstractPolar Bear Pass, located on Bathurst Island (75°40′N, 98°30′W) in the Canadian High Arctic, is a large ecologically important, low‐lying wetland that receives water inputs from streams in the surrounding hillslopes. Most of these hillslope streams are gravel‐bed streams; however, some streambeds are moss lined. One of these vegetated streams was selected to determine how vegetation influences run‐off processes (e.g. water storage and streamflow) in comparison with a similar‐sized gravel‐bed hillslope stream. During the 2009 and 2010 field seasons, snow cover, melt and streamflow measurements were collected in both streams. Frost table and soil moisture conditions were monitored weekly along four cross‐sectional transects in each stream basin, and vegetation inventories were conducted in July 2010. The active layer developed more quickly in 2010 than in 2009, yet the thaw depth remained thinner in the vegetated stream in both years. In 2009, prolonged rainfall of low intensity and meltwater inputs from long‐lasting valley snowbeds maintained streamflow. Warmer and drier conditions in 2010 caused the stream to eventually cease flow, only regenerating after intense rainfall. Moss plays an important role in modifying streamflow later in the season when low‐flow conditions persist, acting as a barrier to streamflow as the moisture deficit of the vegetation must be satisfied before streamflow can regenerate. Results indicate that there is a threshold that determines whether vegetation promotes or hinders streamflow and that this factor will have important implications in response to changing climate conditions for this site and other arctic landscapes. Copyright © 2015 John Wiley & Sons, Ltd.
Corrole‐Decorated Porphyrin Dendrimer and Its Selective Metallation
Authors: Semenishyn Nikolay , Mahammed Atif , Gross Zeev 
Published: July 2015

AbstractUtilization of 4‐formylbenzaldehyde in the 2+1 approach for synthesis of corroles was regulated as to lead to either the one‐pot synthesis of meso‐meso′‐linked dimeric corrole or to a monomeric corrole with a free formyl group. The latter was used as synthon for the preparation of a dendritic porphyrin with four corroles. The different chelating properties of the similar macrocycles allow for selective insertion of zinc(II) into the central porphyrin and cobalt(III) into the peripheral corroles.
Selectfluor–Bu4NI‐Mediated C(sp3)–H Oxidation in Aqueous Media: Synthesis of Δ2‐Isoxazolines from Oximes
Authors: Shi Di , Qin Hai‐Tao , Zhu Chen , Liu Feng 
Published: July 2015

AbstractThe direct functionalization of an aliphatic C–H bond within a complex molecule through a free‐radical pathway is a valuable tool in synthetic chemistry. Herein, we developed an efficient transition‐metal‐free approach to generate Δ2‐isoxazolines from oximes by radical‐mediated C(sp3)–H oxidation. Investigation of the mechanism suggested that in the presence of Selectfluor and Bu4NI, the homolysis of the in situ formed O–I bond generated an iminoxyl radical that facilitated subsequent 1,5‐H transfer and C(sp3)–H oxidation.
Fabrication of a Dendritic Heteropolyacid as Self‐Separated, Water‐Resistant Catalyst for Biodiesel Fuel Production
Authors: Duan Xixin , Sun Zhong , Li Xiangyu , Wang Xiaohong , Wang Shengtian , Li Shiwu 
Published: July 2015

AbstractA novel dendritic heteropolyacid (HPA)‐based ionic liquid has been prepared from the interaction between H3PW12O40 (HPW) and a multi‐SO3H dendritic ionic liquid (IL). This HPA IL exhibited strong Brønsted acidity and a dendritic structure, which was efficient for the esterification and transesterification reactions with excellent water‐ and acid‐resistant stability. The good performance was attributed to the dendritic arrangement with many catalytic sites, porous structure, and hydrophobic surroundings. The catalyst was insoluble in the organic phase resulting easy separation for reuse.
Ecological risk assessment of herbicides in Japan: Integrating spatiotemporal variation in exposure and effects using a multimedia model and algal density dynamics models
Authors: Hayashi Takehiko I. , Imaizumi Yoshitaka , Yokomizo Hiroyuki , Tatarazako Norihisa , Suzuki Noriyuki 
Published: July 2015

Abstract

Application of herbicides to paddy fields in Japan has strong seasonality, and their environmental concentrations exhibit clear spatiotemporal variation. The authors developed an approach that combines a multimedia environmental exposure model (Grid-Catchment Integrated Modeling System) and density dynamics models for algae. This approach enabled assessment of ecological risk when the exposure concentration shows spatiotemporal variation. First, risk maps of 5 herbicides (pretilachlor, butachlor, simetryn, mefenacet, and esprocarb) were created from the spatial predictions of environmental concentrations and 50% inhibitory concentrations of the herbicides. Simulations of algal density dynamics at high-risk sites were then conducted by incorporating the predicted temporal dynamics of the environmental concentration of each herbicide at the sites. The results suggested that the risk of pretilachlor was clearly the highest of the 5 herbicides, in terms of both the spatial distributions and the temporal durations. The present study highlights the importance of integrating exposure models and effect models to clarify spatial and temporal risk and to develop management plans for chemical exposure that shows high spatiotemporal variation. Environ Toxicol Chem 2016;35:233–240. © 2015 SETAC
Comparison of continuously acquired resting state and extracted analogues from active tasks
Authors: Ganger Sebastian , Hahn Andreas , Küblböck Martin , Kranz Georg S. , Spies Marie , Vanicek Thomas , Seiger René , Sladky Ronald , Windischberger Christian , Kasper Siegfried , Lanzenberger Rupert 
Published: July 2015

AbstractFunctional connectivity analysis of brain networks has become an important tool for investigation of human brain function. Although functional connectivity computations are usually based on resting‐state data, the application to task‐specific fMRI has received growing attention. Three major methods for extraction of resting‐state data from task‐related signal have been proposed (1) usage of unmanipulated task data for functional connectivity; (2) regression against task effects, subsequently using the residuals; and (3) concatenation of baseline blocks located in‐between task blocks. Despite widespread application in current research, consensus on which method best resembles resting‐state seems to be missing. We, therefore, evaluated these techniques in a sample of 26 healthy controls measured at 7 Tesla. In addition to continuous resting‐state, two different task paradigms were assessed (emotion discrimination and right finger‐tapping) and five well‐described networks were analyzed (default mode, thalamus, cuneus, sensorimotor, and auditory). Investigating the similarity to continuous resting‐state (Dice, Intraclass correlation coefficient (ICC), R2) showed that regression against task effects yields functional connectivity networks most alike to resting‐state. However, all methods exhibited significant differences when compared to continuous resting‐state and similarity metrics were lower than test‐retest of two resting‐state scans. Omitting global signal regression did not change these findings. Visually, the networks are highly similar, but through further investigation marked differences can be found. Therefore, our data does not support referring to resting‐state when extracting signals from task designs, although functional connectivity computed from task‐specific data may indeed yield interesting information. Hum Brain Mapp 36:4053–4063, 2015. © 2015 The Authors Human Brain Mapping Published by Wiley Periodicals, Inc.