bluuebunny/crossref_metadata_2025_split huggingface dataset:
ChemInform Abstract: Asymmetric Opening of Styrene Oxide with p‐Toluidine Catalyzed by BINOL Polyols and Their Lithium Complexes.
Authors: Belokon' Yu. N. , Maleev V. I. , Moskalenko M. A. , Samoilichenko Yu. V. , Peregudov A. S. , Tsaloev A. T. 
Published: August 2014

AbstractThe title reaction proceeds with low enantioselectivities.
ChemInform Abstract: Bi(OTf)3‐Catalyzed Three‐Component Synthesis of α‐Amino Acid Derivatives.
Authors: Schneider Angelika E. , Beisel Tamara , Shemet Andrej , Manolikakes Georg 
Published: August 2014

AbstractA series of α‐amino acid esters is prepared by a Bi‐catalyzed three‐component reaction of carboxylic amides, carbamates or sulfonyl amides with ethyl glyoxalate and arenes.
ChemInform Abstract: Asymmetric Synthesis of α‐Allyl‐α‐aryl α‐Amino Acids by Tandem Alkylation/π‐Allylation of α‐Iminoesters.
Authors: Curto John M. , Dickstein Joshua S. , Berritt Simon , Kozlowski Marisa C. 
Published: August 2014

AbstractThe first asymmetric tandem N‐alkylation/π‐allylation of α‐iminoesters (I) is described to allow the synthesis of enantioenriched quaternary α‐amino acid derivatives (IV) and (VI).
ChemInform Abstract: Ruthenium on Chitosan: A Recyclable Heterogeneous Catalyst for Aqueous Hydration of Nitriles to Amides.
Authors: Baig R. B. Nasir , Nadagouda Mallikarjuna N. , Varma Rajender S. 
Published: August 2014

AbstractThe applied catalyst can be recovered by simple decantation or centrifugation and reused without loss of its activity.
ChemInform Abstract: Efficient Synthesis of Functionalized 6‐Substituted‐Thiosalicylates via Microwave‐Promoted Suzuki Cross‐Coupling Reaction.
Authors: Liu Yu‐Chao , Qu Ren‐Yu , Chen Qiong , Wu Qiong‐You , Yang Guang‐Fu 
Published: August 2014

AbstractThe improved microwave assisted Suzuki cross‐coupling of aryl iodides (I) with boronic acids followed by deprotection produces various thiosalicylates.
ChemInform Abstract: Carbonylative Suzuki Couplings of Aryl Bromides with Boronic Acid Derivatives under Base‐Free Conditions.
Authors: Bjerglund Klaus M. , Skrydstrup Troels , Molander Gary A. 
Published: August 2014

AbstractTwo methods are developed for the synthesis of unsymmetrical bisaryl ketones via carbonylative Suzuki coupling.
ChemInform Abstract: Oxidative Cross‐Coupling of Allenyl Ketones and Organoboronic Acids: Expeditious Synthesis of Highly Substituted Furans.
Authors: Xia Ying , Xia Yamu , Ge Rui , Liu Zhen , Xiao Qing , Zhang Yan , Wang Jianbo 
Published: August 2014

AbstractThis method has good functional group tolerance and provides a novel alternative for the efficient synthesis of highly substituted furan derivatives.
ChemInform Abstract: Synthesis of Heterocyclic Triads by Pd‐Catalyzed Cross‐Couplings and Evaluation of Their Cell‐Specific Toxicity Profile.
Authors: Salamoun Joseph , Anderson Shelby , Burnett James C. , Gussio Rick , Wipf Peter 
Published: August 2014

AbstractHeterocycles (VIIa), (VIIb), and (X) inhibit significantly renal and breast cancer cell lines.
ChemInform Abstract: Sequential One‐Pot Three Component Rhodium‐Catalyzed Isomerization/1,3‐Dipolar Cycloaddition Cascades to Fused‐Ring Heterocycles.
Authors: Windle Jonathan , Allison Matthew , Shepherd Helena , Sridharan Visuvanathar 
Published: August 2014

AbstractIn the course of the title reaction, three new bonds and four stereo centers are formed in good yields.
ChemInform Abstract: Highly Asymmetric Bromocyclization of Tryptophol: Unexpected Accelerating Effect of DABCO‐Derived Bromine Complex.
Authors: Liu Huan , Jiang Guangde , Pan Xixian , Wan Xiaolong , Lai Yisheng , Ma Dawei , Xie Weiqing 
Published: August 2014

AbstractBromocyclization of tryptophol derivatives is achieved in the presence of chiral BINOL‐derived phosphoric acid catalyst and DABCO derived brominating agents to produce 3‐bromofluoroindolines in high yields and excellent enantioselectivities.
ChemInform Abstract: Direct C—H Bond Arylation of (Benzo)oxazoles with Aryl Chlorides Catalyzed by N‐Heterocyclic Carbene—Palladium(II)—1‐Methylimidazole Complex.
Authors: Shen Xiao‐Bao , Zhang Yun , Chen Wen‐Xin , Xiao Zheng‐Kang , Hu Ting‐Ting , Shao Li‐Xiong 
Published: August 2014

AbstractFor the first time, the direct and phosphine free arylation of the title compounds by using the readily available NHC catalyst is reported.
ChemInform Abstract: An Environmentally Benign Synthesis of Isoxazolines and Isoxazoles Mediated by Potassium Chloride in Water.
Authors: Han Liuquan , Zhang Bijun , Zhu Min , Yan Jie 
Published: August 2014

Abstract1,3‐Dipolar cycloaddition of nitrile oxides, generated in situ by treatment of aldoximes with KCl and oxone in water, with alkenes or alkynes yields isoxazolines and isoxazoles, respectively.
ChemInform Abstract: Synthesis and Reactions of Novel 2,5‐Disubstituted 1,3,4‐Thiadiazoles.
Authors: Mahmoud Mahmoud R. , Shiba Sayed A. , El‐Ziaty Ahmed K. , Abu El‐Azm Fatma S. M. , Ismail Mahmoud F. 
Published: August 2014

AbstractNovel 2,5‐disubstituted thiadiazoles bearing different substituents are obtained by cyclization of thiosemicarbazide (IV) followed by reaction with electrophilic reagents, such as aromatic aldehydes, isatin, phenyl isothiocyanate, and carbon disulfide.
ChemInform Abstract: Synthesis and Redox Behavior of 1,2‐Dihydro‐1‐oxabenz[a]azulen‐2‐ones.
Authors: Ito Shunji , Yamazaki Shohei , Kudo Shun , Sekiguchi Ryuta , Kawakami Jun , Takahashi Masayuki , Matsuhashi Takashi , Toyota Kozo , Morita Noboru 
Published: August 2014

AbstractAlCl3‐mediated reaction of 2‐hydroxyazulenes with β‐ketoesters provides the title species in low to moderate yields.
ChemInform Abstract: An Eco‐Compatible Multicomponent Strategy for the Synthesis of New 2‐Amino‐6‐(1H‐indol‐3‐yl)‐4‐arylpyridine‐3,5‐dicarbonitriles in Aqueous Micellar Medium Promoted by Thiamine‐Hydrochloride.
Authors: Fatma Shahin , Singh Divya , Ankit Preyas , Mishra Priya , Singh Mandavi , Singh Jagdamba 
Published: August 2014

AbstractThe catalyst is reused in two successive runs without significant loss of activity.
ChemInform Abstract: Nickel‐Catalyzed Chelation‐Assisted Direct Arylation of Unactivated C(sp3)—H Bonds with Aryl Halides.
Authors: Li Mingliang , Dong Jiaxing , Huang Xiaolei , Li Kaizhi , Wu Qian , Song Feijie , You Jingsong 
Published: August 2014

AbstractThe nickel‐catalyzed monoarylation of amides (I) with corresponding aryl iodides (II) and (IV) gives rise to desired β‐arylated derivatives (III) and (V), resp., as single products.
ChemInform Abstract: Synthesis of Fused Tetrahydropyrido[2,3‐c]coumarin Derivatives as Potential Inhibitors for Dopamine d3 Receptors, Catalyzed by Hydrated Ferric Sulfate.
Authors: Das Deb K. , Sarkar Satavisha , Khan Abu T. , Saravanan Parameswaran , Patra Sanjukta 
Published: August 2014

AbstractTitle compounds (IV) and (VI) are synthesized using an one‐pot three‐component coupling between 3‐aminocoumarins (I), aromatic aldehydes (III) and cyclic enol ethers (II) or (V).
ChemInform Abstract: One‐Pot, Three‐Component Synthesis of Highly Functionalized Pyrimidone Derivatives and Access to Indole Fused Pyrimidones via Palladium‐Catalyzed Intramolecular Heck Reaction.
Authors: Lei Ming , Tian Wan , Li Wei , Lu Ping , Wang Yanguang 
Published: August 2014

AbstractA facile method for the synthesis of highly functionalized pyrimidone derivatives via three‐component 1,4‐dipolar cycloaddition is developed.
ChemInform Abstract: Catalyst‐Free Synthesis of Alkyl 4‐Oxo‐4H‐pyrido[1,2‐a]pyrimidine‐2‐carboxylate Derivatives on Water.
Authors: Yan Hao , Ma Ying , Sun Yuanjun , Ma Chao , Wang Yuling , Ren Xiaoyu , Huang Guosheng 
Published: August 2014

AbstractAn environmentally friendly and mild protocol allows the synthesis of the title species from 2‐aminopyridines and dialkyl acetylene dicarboxylate in water as the solvent.
ChemInform Abstract: Copper‐Catalyzed N‐Arylation and Aerobic Oxidation: One‐Pot Synthesis of Tetrahydroisoquinolino[2,1‐a]quinazolinone Derivatives.
Authors: Tian Hua , Qiao Hongwei , Zhu Changjin , Fu Hua 
Published: August 2014

AbstractThe newly synthesized products (III) provide diverse structures for screening of biological activity.
ChemInform Abstract: Synthesis of Diverse Azolo[c]quinazolines by Palladium(II)‐Catalyzed Aerobic Oxidative Insertion of Isocyanides.
Authors: Vlaar Tjoestil , Bensch Lisa , Kraakman Jasper , Vande Velde Christophe M. L. , Maes Bert U. W. , Orru Romano V. A. , Ruijter Eelco 
Published: August 2014

AbstractThe oxidative coupling of isocyanides with (2‐aminophenyl)oxazoles using air as the oxidant provides azolo[c]quinazolines (III) and (V) with high selectivity.
ChemInform Abstract: Convenient Access to Novel Functionalized Pyrazino[1,2‐b]isoquinolin‐6‐one and Diazepino[1,2‐b]isoquinolin‐7‐one Scaffolds via the Cushman Multicomponent Reaction Followed by Post‐Condensation.
Authors: Sarnpitak Pakornwit , Krasavin Mikhail 
Published: August 2014

AbstractThe synthesis is based on Cushman multicomponent reaction, wherein aryl glyoxals are used as the carbonyl component for the first time.
ChemInform Abstract: Rhodium‐Catalyzed Sequential Allylic Amination and Olefin Hydroacylation Reactions: Enantioselective Synthesis of Seven‐Membered Nitrogen Heterocycles.
Authors: Arnold Jeffrey S. , Mwenda Edward T. , Nguyen Hien M. 
Published: August 2014

AbstractThe cyclization of the alkenals occurs without razemization.
ChemInform Abstract: Palladium‐Catalyzed Direct C—H Silylation and Germanylation of Benzamides and Carboxamides.
Authors: Kanyiva Kyalo Stephen , Kuninobu Yoichiro , Kanai Motomu 
Published: August 2014

AbstractWith the aid of 8‐aminoquinoline as a directing group the Pd‐catalyzed regioselective activation of aromatic C‐H bonds is demonstrated to afford the corresponding arylsilanes in good yields.
ChemInform Abstract: Dysidaminones A—M, Cytotoxic and NF‐ϰB Inhibitory Sesquiterpene Aminoquinones from the South China Sea Sponge Dysidea fragilis.
Authors: Jiao Wei‐Hua , Xu Ting‐Ting , Yu Hao‐Bing , Mu Feng‐Rong , Li Jia , Li Yu‐Shan , Yang Fan , Han Bing‐Nan , Lin Hou‐Wen 
Published: August 2014

AbstractThirteen new sesquiterpene aminoquinones are isolated and their structure is spectroscopically determined.
ChemInform Abstract: Fragilisinins A—L, New Briarane‐Type Diterpenoids from Gorgonian Junceella fragilis
Authors: Lei Hui , Sun Jian‐Fan , Han Zhuang , Zhou Xue‐Feng , Yang Bin , Liu Yonghong 
Published: August 2014

Abstractisolation, structure and antifouling activities
ChemInform Abstract: Preparation of High Performance CaAlSiN3:Eu2+ Phosphors with the Aid of BaF2 Flux.
Authors: Hu Wei‐Wei , Cai Chao , Zhu Qiang‐Qiang , Xu Xin , Hao Lu‐Yuan , Agathopoulos Simeon 
Published: August 2014

AbstractThe strong red‐emitting title phosphor is synthesized by solid state reaction of Ca3N2, AlN, Si3N4, and EuN using BaF2, CaF2, NH4F, or H3BO3 as flux (BN crucibles, flowing N2, 1600 °C, 4 h).
ChemInform Abstract: Pd0‐Mediated Rapid Cross‐Coupling Reactions, the Rapid C‐[11C]Methylations, Revolutionarily Advancing the Syntheses of Short‐Lived PET Molecular Probes
Authors: Suzuki Masaaki , Doi Hisashi , Koyama Hiroko , Zhang Zhouen , Hosoya Takamitsu , Onoe Hirotaka , Watanabe Yasuyoshi 
Published: August 2014

AbstractReview: [58 refs.
ChemInform Abstract: Catalytic Isonitrile Insertions and Condensations Initiated by RNC—X Complexation
Authors: Chakrabarty Suravi , Choudhary Shruti , Doshi Arpit , Liu Fa‐Qiang , Mohan Rishabh , Ravindra Manasa P. , Shah Dhruv , Yang Xun , Fleming Fraser F. 
Published: August 2014

AbstractReview: [180 refs.
Influences of Land Use on Sediment Pollution across Multiple Spatial Scales in Taihu Basin
Authors: Cai Ying , Zhao Dehua , Xu Delin , Jiang Hao , Yu Mengqiu , Leng Xin , Xie Dong , An Shuqing 
Published: August 2014

AbstractThe dynamic relationship between land use and sediment pollutants in plain river network area were explored at multiple spatial scales. In our study, semi‐circle buffers (100, 200, 500, 1000, 1500, and 2000 m) were drawn to represent six spatial scales. Multivariate analysis, including principal component analysis, Pearson's correlation analysis, and stepwise regression analysis were used to detect the characteristic spatial scale of non‐point source pollution in Taihu Basin. The results suggested that paddy field, rural residential, build‐up, and vegetation are the most important indicators for sediment pollution variability, and sediment pollution was influenced by integrated effects of land uses. The same type of land use could produce different pollutant concentration. The impacts of anthropogenic land use on sediment pollution might have different characteristic spatial scale, e.g. 500 m buffer scale was identified as human disturbances spatial critical scale for total nitrogen, Hg, Pb, and Zn, 1000 m buffer scale for Cd, Cr, and Cu, 1500 m buffer scale for organic matter, and total phosphorus was significantly influenced by human activities in 1000–1500 m. We concluded that the 1000 m buffers on both sides of rivers which considered as the existing priority areas for environmental protection are not very effective in Taihu Basin and expanding the priority regions is therefore crucial to optimize their effectiveness. The identification of the characteristic spatial scale of anthropogenic disturbance could provide new ideas for water environmental protection management in Taihu Basin.
Chromophoric Dissolved Organic Matter Fluctuation Assessment in an Urban River
Authors: Liang Yuting , Xiao Xian , Du Erdeng , Song Chengjie , Song Chaopeng , Zhao Yuan , Liu Xiang 
Published: August 2014

AbstractTo investigate the compositions and spatio‐temporal changes of chromophoric dissolved organic matter (CDOM) in a typical urban river in Taihu Basin, China, that has been treated with series of water quality mitigation measures, 180 water samples were collected from November 2011 to October 2012 and analyzed with fluorescence excitation–emission matrices combined with parallel factor analysis (EEMs–PARAFAC). Three humic‐like components (C1, C2, and C4) and two protein‐like components (C3 and C5) were identified. Fluorescent intensity showed more apparent temporal changes than spatial changes, and humic‐like substances were dominant. The C3, C4, and C5 components decreased from November 2011 to October 2012, indicating effective CDOM removal by the water quality mitigation measures. Significant positive correlations were found between fluorescent components (C3 and C5) and nutritional factors including TN, NH4+‐N, and NO3−‐N. Furthermore, changes of fluorescent components (C2) were found to be related to microbial phosphatase activities. The application of EEMs–PARAFAC presents a promising approach to track the compositions and spatio‐temporal changes of CDOM in urban rivers.
Securing wireless mobile nodes from distributed denial‐of‐service attacks
Authors: Varadharajan Vijay , Tupakula Udaya 
Published: August 2014

SummaryThe current mobile devices have become smart and are increasingly being used for conducting business and personal activities. Also, there is increasing number of attacks targeting such mobile devices. The term mobile botnet refers to group of mobile devices that are compromised and controlled by the attacker that can be used for generating distributed denial‐of‐service attacks. The security protocols that have been proposed for wireless and mobile networks have several weaknesses that can be exploited by the attacker to obtain unauthorized access and generate attacks. Also, there is growing number of malicious applications that are aimed to compromise smartphones and using them for generating different types of attacks. In this paper, we propose techniques to counteract distributed denial‐of‐service attacks on wireless mobile devices. We describe the operation and architectural components of our model. We will show that our model is able to efficiently deal with the attacks by dropping the attack traffic before it targets the victim mobile node, can prevent the attack traffic at the upstream nodes, and also deal with the attack cases that involve mobility of the attacking and victim nodes. Copyright © 2014 John Wiley & Sons, Ltd.
OpenCL performance portability for general‐purpose computation on graphics processor units: an exploration on cryptographic primitives
Authors: Agosta Giovanni , Barenghi Alessandro , Di Federico Alessandro , Pelosi Gerardo 
Published: August 2014

SummaryThe modern trend toward heterogeneous many‐core architectures has led to high architectural diversity in both high performance and high‐end embedded systems. To effectively exploit the computational resources of such a wide range of architectures, programming languages and APIs such as OpenCL have become increasingly popular. Although OpenCL provides functional code portability and the ability to fine tune the application to the target hardware, providing performance portability is still an open problem. Thus, many research works have investigated the optimization of specific combinations of application and target platform. In this paper, we aim at leveraging the experience obtained in the implementation of algorithms from the cryptography domain to provide a set of guidelines for modern many‐core heterogeneous architecture performance portability and to establish a base on which domain‐specific languages and compiler transformations could be built in the near future. We study algorithmic choices and the effect of compiler transformations on three representative applications in the chosen domain on a set of seven target platforms. To estimate how well the application fits the architecture, we define a metric of computational intensity both for the architecture and the application implementation. Besides being useful to compare either different implementation or algorithmic choices and their fitness to a specific architecture, it can also be useful to the compiler to guide the code optimization process. Copyright © 2014 John Wiley & Sons, Ltd.
Low Participation of Oxygen in the Generation and Progression of Bow‐Tie Trees
Authors: Kumazawa Takao , Morinaga Seiji 
Published: August 2014

SUMMARYBow‐tie trees (BTTs) generated by microscopic contaminants or voids in insulators of cross‐linked polyethylene (XLPE) cables still remain a factor contributing to deterioration. It has been reported that redox reactions of ions diffusing in XLPE lead to molecular chain cleavage. In such an electrochemical mechanism, the participation of oxygen in addition to ions is suspected. In order to examine the influence of oxygen on BTT generation and progress, we performed various experiments controlling oxygen gas by vacuum degassing, a gas barrier film, and so on. The number of BTTs and the maximum BTT length of XLPE samples aged at 60 °C increased with the water content. However, several of the data deviated significantly from these relationships. These results indicate that BTT generation and progression were promoted by vacuum degassing and inhibited by wrapping the samples with a gas barrier film or bubbling air through tap water to immerse the samples. On the whole, the behavior of BTT generation toward supplying or shielding of oxygen was not consistent. The experimental results can be qualitatively explained by diffusion or permeation of ions and water rather than oxygen gas, and thus oxygen seems not to be directly associated with BTT generation and progress.
Research advancements in palm oil nutrition
Authors: May Choo Yuen , Nesaretnam Kalanithi 
Published: August 2014

Palm oil is the major oil produced, with annual world production in excess of 50 million tonnes. About 85% of global palm oil produced is used in food applications. Over the past three decades, research on nutritional benefits of palm oil have demonstrated the nutritional adequacy of palm oil and its products, and have resulted in transitions in the understanding these attributes. Numerous studies have demonstrated that palm oil was similar to unsaturated oils with regards to effects on blood lipids. Palm oil provides a healthy alternative to trans‐fatty acid containing hydrogenated fats that have been demonstrated to have serious deleterious effects on health. The similar effects of palm oil on blood lipids, comparable to other vegetable oils could very well be due to the structure of the major triglycerides in palm oil, which has an unsaturated fatty acid in the stereospecific numbers (sn)‐2 position of the glycerol backbone. In addition, palm oil is well endowed with a bouquet of phytonutrients beneficial to health, such as tocotrienols, carotenoids, and phytosterols. This review will provide an overview of studies that have established palm oil as a balanced and nutritious oil.Numerous studies in human and animal on nutritional attributes of palm oil have shown that: Palm olein is comparable to monounsaturated oils (e.g. olive oil) in its effect on lipid profile. Palm oil is well endowed with a bouquet of phytonutrients beneficial to health.
Chemoenzymatically synthesized policosanyl phenolates as autoxidation inhibitors
Authors: Wang Zhiqiang , Hwang Seung Hwan , Lim Soon Sung 
Published: August 2014

In this study, ten policosanyl phenolates were synthesized via a two‐step chemoenzymatic route. The intermediate vinyl esters were first chemically produced and subsequently esterified with policosanols catalyzed by Novozyme 435 (Candida antarctica lipase B). The conversion yields of the policosanyl phenolates were in the range of 4.20–37.14%. Their antioxidant activities were evaluated. Results showed that, compared with the corresponding phenolic acids, all synthesized policosanyl phenolates had better activities for peroxide value, but worse for 2,2'‐azinobis(3‐ethylbenzothiazoline‐6‐sulfonic acid) assay; policosanyl p‐coumarate and policosanyl 5‐phenylvalerate showed a moderate and durable inhibition effect on lipid oxidation both in a linoleic acid system and a cooked pork system.Practical applications: It is important to develop antioxidants from natural sources. The lipophilization of phenolic acids with fatty alcohols can improve the hydrophobicity and change the antioxidant capacity of phenols. This study focuses on policosanol, which is a food‐grade mixture of long‐chain aliphatic primary alcohols, having development and application potential as a cost‐effective food additive. According to our results, policosanyl phenolates, which are a new range of amphiphilic antioxidant molecules, have the potential for use as alternative food antioxidants in the food industry.The policosanyl phenolates were synthesized via a two‐step route as shown in the figure. The intermediate vinyl esters were first chemically produced and subsequently esterified with policosanols catalyzed by Novozyme 435 (Candida antarctica lipase B).
An Efficient Method for Enhancing the Reactivity and Flexibility of [18F]Fluoride Towards Nucleophilic Substitution Using Tetraethylammonium Bicarbonate
Authors: Brichard Laurent , Aigbirhio Franklin I. 
Published: August 2014

AbstractThe standard method used to generate reactive [18F]fluoride for [18F]radiolabelling is to trap it on an anion‐exchange cartridge then elute it with a basic aqueous solution, which is then subjected to azeotropic evaporation to remove water. We have now developed a method through the use of tetraethylammonium hydrogen carbonate in which we can obtain efficient recovery of [18F]fluoride (up to 99 %), remove the requirement for the time‐consuming and inefficient azeotropic evaporation process and produce a reactive [18F]fluoride that can undergo a wide range of aliphatic and aromatic [18F]nucleophilic substitutions in up to 93 % radiochemical conversion at end‐of‐synthesis in the presence or without water.