bluuebunny/crossref_metadata_2025_split huggingface dataset:
ChemInform Abstract: Iron‐Catalyzed Dehydration of Aldoximes to Nitriles Requiring Neither Other Reagents Nor Nitrile Media.
Authors: Hyodo Kengo , Kitagawa Saki , Yamazaki Masayuki , Uchida Kingo 
Published: September 2016

AbstractThe method can be also applied to the one‐pot synthesis of nitriles from aldehydes.
ChemInform Abstract: Metal‐Free Synthesis of Sulfonylated Amides Through Radical Aryl Migration—Desulfonylation.
Authors: Qiu Jiang‐Kai , Hao Wen‐Juan , Kong Li‐Fang , Ping Wei , Tu Shu‐Jiang , Jiang Bo 
Published: September 2016

AbstractThe addition of sulfonyl radicals to the double bond of acrylamides triggers a domino 5‐exo‐trig cyclization, desulfonylation, and aryl migration sequence, affording a series of sulfonylated amides.
ChemInform Abstract: One‐Pot Jeffery—Heck and Reduction Sequence: Synthesis of Alcohols and Applied to the Synthesis of Flavan Natural Products.
Authors: Reddy Alavala Gopi Krishna , Krishna Jonnada , Satyanarayana Gedu 
Published: September 2016

AbstractA practical one‐pot procedure is presented for the Pd‐catalyzed coupling of allylic alcohols with aryl iodides and direct NaBH4‐reduction of the resulting carbonyl compounds to 1,3‐diaryl propanols.
ChemInform Abstract: Chiral Bicyclic Bridgehead Phosphoramidite (Briphos) Ligands for Asymmetric Rhodium‐Catalyzed 1,2‐ and 1,4‐Addition.
Authors: Lee Ansoo , Kim Hyunwoo 
Published: September 2016

AbstractThe highly enantioselective 1,4‐addition of aryl boronic acids onto cyclic and acyclic α,β‐unsaturated ketones or α,β‐unsaturated ketimines as well as the 1,2‐addition onto N,N‐dimethyl sulfamoyl imines is described.
ChemInform Abstract: New Spiropyrans Based on 1,3‐Benzoxazine‐2‐one: Acid Catalyzed Synthesis and Theoretical Insight into the Photochromic Activity.
Authors: Ozhogin Ilya V. , Dorogan Igor V. , Lukyanov Boris S. , Mukhanov Eugene L. , Tkachev Valery V. , Chernyshev Anatoly V. , Lukyanova Maria B. , Aldoshin Sergey M. , Minkin Vladimir I. 
Published: September 2016

AbstractIn situ generated protonated acetic acid catalyzes the reaction of methylene base (I) with salicylaldehydes to give new spiropyrans.
ChemInform Abstract: A One‐Pot Sequential Five‐Component Domino Reaction for the Expedient Synthesis of Polysubstituted Pyrroles
Authors: Ambethkar Sethurajan , Padmini Vediappen , Bhuvanesh Nattamai 
Published: September 2016

Abstractstarting from readily available acetophenones, DMF‐DMA, anilines, arylglyoxals, and malononitrile
ChemInform Abstract: Silver(I)‐Catalyzed Atroposelective Desymmetrization of N‐Arylmaleimide via 1,3‐Dipolar Cycloaddition of Azomethine Ylides: Access to Octahydropyrrolo[3,4‐c]pyrrole Derivatives.
Authors: Liu Hua‐Chao , Tao Hai‐Yan , Cong Hengjiang , Wang Chun‐Jiang 
Published: September 2016

AbstractThe novel reaction provides the annulation products in excellent yields, and with excellent diastereo‐ and enantioselectivities.
ChemInform Abstract: Four‐Electron Electrocyclic Ring‐Opening/Intermolecular [4 + 2] Cycloadditions of α‐Hydroxycyclobutenones: Stereoselective Synthesis of Multiple Substituted δ‐Lactams.
Authors: Song Peidong , Li Qing , Wang Congcong , Wu Wenfa , Mao Xu , Wang Jiajia , Hu Xiangdong 
Published: September 2016

AbstractThe first example for the intermolecular cycloaddition of the extensively studied enol‐ketene intermediate is reported and provides a new synthetic route to multiply substituted δ‐lactams with high stereoselectivity.
ChemInform Abstract: Cu‐Catalyzed Alkynylation of Unactivated C(sp3)—X Bonds with Terminal Alkynes Through Directing Strategy.
Authors: Luo Fei‐Xian , Xu Xing , Wang Ding , Cao Zhi‐Chao , Zhang Yun‐Fei , Shi Zhang‐Jie 
Published: September 2016

AbstractFollowing a scalable procedure alkyl chlorides equipped with a quinoline amide directing group are cross‐coupled with various terminal alkynes to afford internal alkynes in high yields.
ChemInform Abstract: Efficient Synthesis of 4‐Hydroxybenzo[h]quinoline‐2(1H)‐one and Some Derivatives.
Authors: Rufchahi E. O. Moradi , Pourbabaea M. 
Published: September 2016

AbstractPPA‐induced cyclization of N,N‐dinaphthylmalonamide (I) or the related hemimalonamide provides the title 4‐hydroxybenzoquinolinone (II), which is transformed into a variety of functionalized derivatives including tetracyclic compound (IV).
ChemInform Abstract: Structural Characterization of Kadcoccinin A: A Sesquiterpenoid with a Tricyclo[4.4.0.03,10]decane Scaffold from Kadsura coccinea.
Authors: Hu Zheng‐Xi , Shi Yi‐Ming , Wang Wei‐Guang , Tang Jian‐Wei , Zhou Min , Du Xue , Zhang Yong‐Hui , Pu Jian‐Xin , Sun Han‐Dong 
Published: September 2016

Abstractisolation and structure elucidation of kadcoccinin A (I), and the biosynthetically related kadcoccinin B (II)
Genetic Ancestry using Mitochondrial DNA in patients with Triple‐negative breast cancer (GAMiT study)
Authors: Rao Roshni , Rivers Aeisha , Rahimi Asal , Wooldridge Rachel , Rao Madhu , Leitch Marilyn , Euhus David , Haley Barbara B. 
Published: September 2016

BACKGROUNDTriple‐negative breast cancer (TNBC) lacks estrogen, progesterone, and human epidermal growth factor receptor 2 (HER2)/neu receptors, and is aggressive and therapeutically challenging. Genetic ancestry testing is an emerging medical field. Mitochondrial DNA (mtDNA), which is distinct from nuclear DNA, is maternally inherited and allows for origin determination. Patients with TNBC tend to be younger and are more likely to be African American, making this an ideal disease for mtDNA exploration. To the authors' knowledge, the current study is the first to perform mtDNA for self‐described African American, White, and Hispanic patients with TNBC to identify mtDNA patterns.METHODSPatients with TNBC who were at any stage of therapy/survivorship were included. Self‐reported ethnicity was confirmed at the time of the prospective buccal swab. Haplogroup prediction was performed on sequencing of hypervariable region 1. Using sequence similarity scores and lineage databases, sequence patterns were determined. Data regarding presentation and treatment, tumor features, and outcomes was collected.RESULTSA total of 92 patients were included: 31 self‐described African American, 31 White, and 30 Hispanic individuals. Hispanic patients were found to have the largest tumor size (4.5 cm; P = .01) and youngest age (41 years; P<.0001). Eight patients were BRCA1/2 mutation carriers. There were no differences noted among groups with regard to surgery, lymph node metastases, or survival. Analysis revealed Nigerian, Cameroon, or Sierra Leone ancestry and haplogroups A, U, H, or B to be the most common mtDNA patterns. Twelve discordances (13%) between mtDNA analysis and self‐described ethnicity were identified among the 92 patients. The highest discordance (26%; 8 patients) was noted in self‐described Hispanic patients: 3 had Nigerian ancestry, and 1 individual demonstrated haplogroup K mtDNA (Ashkenazi Jewish ancestry).CONCLUSIONSDiscordance between self‐reported ethnicity and mtDNA analysis was identified in 13% of patients with TNBC. The identification of mtDNA patterns with a predisposition toward TNBC may allow for risk stratification. Cancer 2017;107–113. © 2016 American Cancer Society.
Design of a numerical model of lung by means of a special boundary condition in the truncated branches
Authors: Tena Ana F. , Fernández Joaquín , Álvarez Eduardo , Casan Pere , Walters D. Keith 
Published: September 2016

AbstractBackgroundThe need for a better understanding of pulmonary diseases has led to increased interest in the development of realistic computational models of the human lung.MethodsTo minimize computational cost, a reduced geometry model is used for a model lung airway geometry up to generation 16. Truncated airway branches require physiologically realistic boundary conditions to accurately represent the effect of the removed airway sections. A user‐defined function has been developed, which applies velocities mapped from similar locations in fully resolved airway sections. The methodology can be applied in any general purpose computational fluid dynamics code, with the only limitation that the lung model must be symmetrical in each truncated branch.ResultsUnsteady simulations have been performed to verify the operation of the model. The test case simulates a spirometry because the lung is obliged to rapidly perform both inspiration and expiration. Once the simulation was completed, the obtained pressure in the lower level of the lung was used as a boundary condition. The output velocity, which is a numerical spirometry, was compared with the experimental spirometry for validation purposes.ConclusionsThis model can be applied for a wide range of patient‐specific resolution levels. If the upper airway generations have been constructed from a computed tomography scan, it would be possible to quickly obtain a complete reconstruction of the lung specific to a specific person, which would allow individualized therapies.
Molecular Engineering of Somatostatin Analogue with Minimal Dipeptide Motif Induces the Formation of Functional Nanoparticles
Authors: Shekhter Zahavi Talia , Oron‐Herman Mor , Kostenich Genady , Rub Eyal , Salitra Yoseph , Buzhansky Ludmila , Orenstein Arie , Gazit Ehud , Adler‐Abramovich Lihi 
Published: September 2016

AbstractFunctionalized nanoparticles decorated with functional biological entities serve as preferred vehicles for numerous theranostic applications. Here we offer an alternative strategy in which the targeting moieties also act as building blocks for the formation of functional nanoassemblies. Diphenylalanine, a small, highly potent self‐assembling module, was incorporated with a somatostatin analogue, a modified hormone which preferentially binds to cancer cells. The co‐assembly of the engineered hormone together with the structurally diverse diphenylalanine derivative allowed the formation of bioactive homogenous spherical nanostructures. Significant internalization capacity of the loaded co‐assembled nanospheres into cancer cells in vitro, as well as selective in vivo accumulation in tumors, were demonstrated. These findings present a new method for the molecular engineering of bioactive peptide molecules by minor modifications with a remarkably potent association motif.
Homogeneous Photocatalytic H2 Production Using a RuII Bathophenanthroline Metal‐to‐Ligand Charge‐Transfer Photosensitizer
Authors: Khnayzer Rony S. , Olaiya Babatunde S. , El Roz Karim A. , Castellano Felix N. 
Published: September 2016

AbstractInvited for this month's cover are the research groups of Prof. Rony S. Khnayzer at Lebanese American University and Prof. Felix (Phil) N. Castellano at North Carolina State University. The cover picture illustrates the absorption of visible light by a ruthenium bathophenanthroline MLCT chromophore followed by a sequence of electron transfer steps that ultimately leads to the efficient production of hydrogen gas from water. Read the full text of the article at 10.1002/cplu.201600227.
Telomere‐Mediated Chromosomal Truncation for Generating Engineered Minichromosomes in Maize
Authors: Swyers Nathan C. , Cody Jon P. , McCaw Morgan E. , Graham Nathaniel D. , Zhao Changzeng , Gaeta Robert T. , Birchler James A. 
Published: September 2016

AbstractMinichromosomes have been generated in maize using telomere‐mediated truncation. Telomere DNA, because of its repetitive nature, can be difficult to manipulate. The protocols in this unit describe two methods for generating the telomere DNA required for the initiation of telomere‐mediated truncation. The resulting DNA can then be used with truncation cassettes for introduction into maize via transformation. © 2016 by John Wiley & Sons, Inc.
Architecture of the Interface between the Perovskite and Hole‐Transport Layers in Perovskite Solar Cells
Authors: Moriya Masahiro , Hirotani Daisuke , Ohta Tsuyoshi , Ogomi Yuhei , Shen Qing , Ripolles Teresa S. , Yoshino Kenji , Toyoda Taro , Minemoto Takashi , Hayase Shuzi 
Published: September 2016

AbstractThe interface between the perovskite (PVK, CH3NH3PbI3) and hole‐transport layers in perovskite solar cells is discussed. The device architecture studied is as follows: F‐doped tin oxide (FTO)‐coated glass/compact TiO2/mesoporous TiO2/PVK/2,2′,7,7′‐tetrakis‐(N,N‐di‐4‐methoxyphenylamino)‐9,9′‐spirobifluorene (Spiro‐MeOTAD)/Au. After a thin layer of 4,4,4‐trifluorobutylammonium iodide (TFBA) was inserted at the interface between PVK and Spiro‐MeOTAD, the photovoltaic efficiency increased from 11.6–14.5 % to 15.1–17.6 %. TFBA (10 ppm) was added in the PVK solution before coating. Owing to the low surface tension of TFBA, TFBA rose to the surface of the PVK layer spontaneously during spin‐coating to make a thin organic layer. The PVK grain boundaries also seemed to be passivated with the addition of TFBA. However, large differences in Urbach energies and valence band energy level were not observed for the PVK layer with and without the addition of TFBA. The charge recombination time constant between the PVK and the Spiro‐MeOTAD became slower (from 8.4 to 280 μsec) after 10 ppm of TFBA was added in the PVK. The experimental results using TFBA conclude that insertion of a very thin layer at the interface between PVK and Spiro‐MeOTAD is effective for suppressing charge recombination and increasing photovoltaic performances.
Ionic and Optical Properties of Methylammonium Lead Iodide Perovskite across the Tetragonal–Cubic Structural Phase Transition
Authors: Hoque Md Nadim Ferdous , Islam Nazifah , Li Zhen , Ren Guofeng , Zhu Kai , Fan Zhaoyang 
Published: September 2016

AbstractPractical hybrid perovskite solar cells (PSCs) must endure temperatures above the tetragonal–cubic structural phase transition of methylammonium lead iodide (MAPbI3). However, the ionic and optical properties of MAPbI3 in such a temperature range, and particularly, dramatic changes in these properties resulting from a structural phase transition, are not well studied. Herein, we report a striking contrast at approximately 45 °C in the ionic/electrical properties of MAPbI3 owing to a change of the ion activation energy from 0.7 to 0.5 eV, whereas the optical properties exhibit no particular transition except for the steady increase of the bandgap with temperature. These observations can be explained by the “continuous” nature of perovskite phase transition. We speculate that the critical temperature at which the ionic/electrical properties change, although related to crystal symmetry variation, is not necessarily the same temperature as when tetragonal–cubic structural phase transition occurs.
Bacteria‐type‐specific biparental immune priming in the pipefish Syngnathus typhle
Authors: Beemelmanns Anne , Roth Olivia 
Published: September 2016

AbstractThe transfer of acquired and specific immunity against previously encountered bacteria from mothers to offspring boosts the immune response of the next generation and supports the development of a successful pathogen defense. While most studies claim that the transfer of immunity is a maternal trait, in the sex‐role‐reversed pipefish Syngnathus typhle, fathers nurse the embryos over a placenta‐like structure, which opens the door for additional paternal immune priming. We examined the potential and persistence of bacteria‐type‐specific parental immune priming in the pipefish S. typhle over maturation time using a fully reciprocal design with two different bacteria species (Vibrio spp. and Tenacibaculum maritimum). Our results suggest that S. typhle is able to specifically prime the next generation against prevalent local bacteria and to a limited extent even also against newly introduced bacteria species. Long‐term protection was thereby maintained only against prevailing Vibrio bacteria. Maternal and paternal transgenerational immune priming can complement each other, as they affect different pathways of the offspring immune system and come with distinct degree of specificity. The differential regulation of DNA‐methylation genes upon parental bacteria exposure in premature pipefish offspring indicates that epigenetic regulation processes are involved in transferring immune‐related information across generations. The identified trade‐offs between immune priming and reproduction determine TGIP as a costly trait, which might constrain the evolution of long‐lasting TGIP, if parental and offspring generations do not share the same parasite assembly.
Summer streamflow deficits from regenerating Douglas‐fir forest in the Pacific Northwest, USA
Authors: Perry Timothy D. , Jones Julia A. 
Published: September 2016

AbstractDespite controversy about effects of plantation forestry on streamflow, streamflow response to forest plantations over multiple decades is not well understood. Analysis of 60‐year records of daily streamflow from eight paired‐basin experiments in the Pacific Northwest of the United States (Oregon) revealed that the conversion of old‐growth forest to Douglas‐fir plantations had a major effect on summer streamflow. Average daily streamflow in summer (July through September) in basins with 34‐ to 43‐year‐old plantations of Douglas‐fir was 50% lower than streamflow from reference basins with 150‐ to 500‐year‐old forests dominated by Douglas‐fir, western hemlock, and other conifers. Study plantations are comparable in terms of age class, treatments, and growth rates to managed forests in the region. Young Douglas‐fir trees, which have higher sapwood area, higher sapflow per unit of sapwood area, higher concentration of leaf area in the upper canopy, and less ability to limit transpiration, appear to have higher rates of evapotranspiration than old trees of conifer species, especially during dry summers. Reduced summer streamflow in headwater basins with forest plantations may limit aquatic habitat and exacerbate stream warming, and it may also alter water yield and timing in much larger basins. Legacies of past forest management or extensive natural disturbances may be confounded with effects of climate change on streamflow in large river basins. Continued research is needed using long‐term paired‐basin studies and process studies to determine the effects of forest management on streamflow deficits in a variety of forest types and forest management systems.
Electrochemical Characteristics of 4‐oxo‐4H‐pyran‐dicarboxylic Acid (Chelidonic Acid) and some of its Metal Complexes
Authors: Jadreško Dijana , Kakša Matija , Popović Zora 
Published: September 2016

AbstractA few novel metal complexes of chelidonic acid (chelH2), namely [Ca(chel)(H2O)3] (1), [Cu(chel)(H2O)5] ⋅ 2H2O (2) and [VO(chel)(H2O)3] ⋅ 2H2O (3) were prepared, identified by elemental analysis and characterized by electrochemical methods. IR‐spectra and thermal stability in solid state are discussed as well. The electrochemical characteristics of the free chelidonic acid and its complexes 1–3 were studied by (cyclic) square‐wave voltammetry, on static mercury drop electrode (SMDE) and paraffin‐impregnated graphite electrode (PIGE), in aqueous media over a wide pH range. The reduction of chelidonic acid on SMDE is a kinetically controlled electrode reaction, occurring with the transfer of one electron and two protons for 1<pH<6, whereas in very alkaline media the electron transfer is pH independent, i.e. the mechanism of electro‐reduction of chelH2 is proposed. The experimental parameters of the electroanalytical procedure were optimized and the method was applied for the investigation of the metal ion coordination preferences toward chelidonic acid. For the direct determination of solid complexes 1–3, SW voltammetry of microparticles was used.
Characteristics of Avoidant/Restrictive Food Intake Disorder in a Cohort of Adult Patients
Authors: Nakai Yoshikatsu , Nin Kazuko , Noma Shun'ichi , Teramukai Satoshi , Wonderlich Stephen A. 
Published: September 2016

AbstractObjectiveTo assess and compare clinical symptoms and psychometric analysis of adult patients with avoidant/restrictive food intake disorder (ARFID) with those with anorexia nervosa (AN).MethodWe completed a retrospective review of adult patients with a feeding and eating disorder assessed between 1990 and 2005 that qualified for a diagnosis of ARFID. Patients with ARFID were compared with those with AN, with respect to the demographics, clinical symptoms and psychometric analysis.ResultsUsing the criteria of the fifth edition of the Diagnostic and Statistical Manual, 95 (9.2%) of 1029 patients with a feeding and eating disorder met the criteria for ARFID. All patients with ARFID were women. The ARFID group had a significantly shorter duration of illness, lower rates of hospital admission history and less severe psychopathology than the AN group.ConclusionsAdult patients with ARFID in this study were clinically distinct from those with AN and somewhat different from paediatric patients with ARFID in previous studies. Copyright © 2016 John Wiley & Sons, Ltd and Eating Disorders Association.
MoS2 as a co‐catalyst for photocatalytic hydrogen production from water
Authors: Han Bing , Hu Yun Hang 
Published: September 2016

AbstractSolar‐to‐hydrogen conversion based on photocatalytic water splitting is a promising pathway for sustainable hydrogen production. The photocatalytic process requires highly active, inexpensive, and earth‐abundant materials as photocatalysts. As a presentative layer‐structured transition metal dichalcogenides, molybdenum disulfide (MoS2) is attracting intensive attention due to its unique electro and photo properties. In this article, we comprehensively review the recent research efforts of exploring MoS2 as a co‐catalyst for photocatalytic hydrogen production from water, with emphasis on its combination with CdS, CdSe, graphene, carbon nitride, TiO2, and others. It is shown that MoS2–semiconductor composites are promising photocatalysts for hydrogen evolution from water under visible light irradiation.
Effects of clay minerals on transport of graphene oxide in saturated porous media
Authors: Lu Taotao , Xia Tianjiao , Qi Yu , Zhang Chengdong , Chen Wei 
Published: September 2016

Abstract

The presence of kaolinite, montmorillonite, and illite in packed quartz sand inhibited the transport of graphene oxide to different degrees. Transport inhibition was exerted mainly by the presence of positively charged sites on clay edges (which served as favorable deposition sites), whereas the effects on the overall particle–collector interaction energy and flow path were small. Kaolinite exhibited the most significant transport-inhibition effects because of its high percentage of edge area. Environ Toxicol Chem 2017;36:655–660. © 2016 SETAC