bluuebunny/crossref_metadata_2025_split huggingface dataset:
ChemInform Abstract: Pb2B3O5.5(OH)2 and [Pb3(B3O7)](NO)3: Facile Syntheses of New Lead(II) Borates by Simply Changing the pH Values of the Reaction Systems.
Authors: Song Jun‐Ling , Hu Chun‐Li , Xu Xiang , Kong Fang , Mao Jiang‐Gao 
Published: September 2013

AbstractCompounds (II) and (III) are characterized by single crystal XRD, optical diffuse reflectance spectroscopy, second harmonic generation measurements, and DFT calculations.
ChemInform Abstract: Synthesis, Magnetism, and Electrochemistry of the Ni14‐ and Ni5‐ Containing Heteropolytungstates [Ni14(OH)6(H2O)10 (HPO4)4 (P2W15O56)4]34‐ and [Ni5(OH)4(H2O)4 (β‐GeW9O34) (β‐GeW8O30(OH))]13‐.
Authors: Ibrahim Masooma , Xiang Yixian , Bassil Bassem S. , Lan Yanhua , Powell Annie K. , de Oliveira Pedro , Keita Bineta , Kortz Ulrich 
Published: September 2013

AbstractThe two new compounds (IV) and (VII) are synthesized and characterized by single crystal XRD, IR spectroscopy, cyclic voltammetry, and magnetic measurements.
ChemInform Abstract: Cobalt‐Catalyzed Oxidative α‐Cyanation of Tertiary Aromatic Amines with Trimethylsilyl Cyanide and tert‐Butyl Hydroperoxide.
Authors: Sakai Norio , Mutsuro Akihiro , Ikeda Reiko , Konakahara Takeo 
Published: September 2013

AbstractThe method is suitable for the α‐cyanation of N,N‐dimethylanilines and cyclic amines such as (IV) and (VI), whereas N,N‐diethylaniline does not react.
ChemInform Abstract: Diastereodivergent Carbometalation/Oxidation/Selective Ring Opening: Formation of All‐Carbon Quaternary Stereogenic Centers in Acyclic Systems.
Authors: Delaye Pierre‐Olivier , Didier Dorian , Marek Ilan 
Published: September 2013

AbstractThe developed title reaction sequence allows the preparation of both enantiomers of aldehyde (VIb) starting from the same initial cyclopropene derivative [(S)‐Ib].
ChemInform Abstract: The Use of Methyl 2,2‐Difluoro‐2‐(fluorosulfonyl)acetate as the Difluorocarbene Source to Generate an in situ Source of Difluoromethylene Triphenylphosphonium Ylide.
Authors: Thomoson Charles S. , Martinez Henry , Dolbier William R. Jr. 
Published: September 2013

AbstractThis new Wittig‐type reaction of difluorocarbene (II) with aldehydes or an activated ketone produces 1,1‐difluoroalkenes in good yields.
ChemInform Abstract: An Expedient Synthesis of Cinnamyl Fluorides from Morita—Baylis—Hillman Adducts.
Authors: Lim Cheol Hee , Kim Se Hee , Lee Hyun Ju , Kim Hyung Jin , Kim Jae Nyoung 
Published: September 2013

AbstractThe bromides (I) are synthesized by literature‐known procedures from Morita—Baylis—Hillman‐alcohols by treatment with HBr or PBr3.
ChemInform Abstract: Cu‐Catalyzed Chemoselective Preparation of 2‐(Pinacolato)boron‐Substituted Allylcopper Complexes and Their in situ Site‐, Diastereo‐, and Enantioselective Additions to Aldehydes and Ketones.
Authors: Meng Fanke , Jang Hwanjong , Jung Byunghyuck , Hoveyda Amir H. 
Published: September 2013

AbstractThe complexes are efficiently generated by base‐promoted reaction in the presence of bisphosphine ligands and coupled in situ with the carbonyl compounds.
ChemInform Abstract: Formation of C=N Bonds by the Release of H2: A New Strategy for Synthesis of Imines and Benzazoles.
Authors: Liu Renhua , et al. et al. 
Published: September 2013

AbstractAn oxidant‐ and H‐acceptor‐free heterogeneous catalysis protocol for the dehydrogenation of amines into imines with liberation of H2 is developed and applied to the synthesis of benzoxazoles, benzimidazoles, and benzothiazoles via a one‐pot cascade reaction.
ChemInform Abstract: Bifunctional Titanocene Catalysis in Multicomponent Couplings: A Convergent Assembly of β‐Alkynyl Ketones.
Authors: Campos Catherine A. , Gianino Joseph B. , Ashfeld Brandon L. 
Published: September 2013

AbstractA titanocene‐catalyzed multicomponent coupling approach toward β‐alkynyl ketones from readily available silyl enol ethers, aldehydes, and iodoalkynes is developed.
ChemInform Abstract: Addition of Terminal Alkynes to Aromatic Nitriles Catalyzed by Divalent Lanthanide Amides Supported by Amidates: Synthesis of Ynones.
Authors: Ding Hao , Lu Chengrong , Hu Xiaolin , Zhao Bei , Wu Bing , Yao Yingming 
Published: September 2013

AbstractA facile protocol including the novel dimeric europium catalyst (I) is developed.
ChemInform Abstract: Acetylide Ion(C22‐) as a Synthon to Link Electrophiles and Nucleophiles: A Simple Method for Enaminone Synthesis.
Authors: Yu Dingyi , Sum Yin Ngai , Ean Amanda Chng Cheng , Chin Mei Ping , Zhang Yugen 
Published: September 2013

AbstractThe three‐component reaction of aryl aldehyde, calcium carbide and a bulky secondary amine provides a direct synthesis of enaminones (IV).
ChemInform Abstract: NHC‐Catalyzed Reactions of Enals with Water as a Solvent.
Authors: Leong Wendy Wen Yi , Chen Xingkuan , Chi Yonggui Robin 
Published: September 2013

AbstractThe NHC‐catalyzed reaction of enals (I) with chalcones (II) in water leads to trisubstituted cyclopentenes (III).
ChemInform Abstract: Desymmetrization of Cyclohexadienones via Intramolecular Stetter Reaction to Construct Tricyclic Carbocycles.
Authors: Jia Min‐Qiang , You Shu‐Li 
Published: September 2013

AbstractOptimized conditions including a polycyclic chiral triazole catalyst allow the conversion of cyclohexadienones into optically active tricycles with enantioselectivities up to 89%.
ChemInform Abstract: Generation of CF3‐Containing Epoxides and Aziridines by Visible‐Light‐Driven Trifluoromethylation of Allylic Alcohols and Amines.
Authors: Kim Eunjin , Choi Sungkyu , Kim Heejeong , Cho Eun Jin 
Published: September 2013

AbstractAn efficient method for the generation of CF3‐containing epoxides and aziridines is developed.
ChemInform Abstract: Effective Synthesis of Chiral N‐Fluoroaryl Aziridines Through Enantioselective Aziridination of Alkenes with Fluoroaryl Azides.
Authors: Jin Li‐Mei , Xu Xue , Lu Hongjian , Cui Xin , Wojtas Lukasz , Zhang X. Peter 
Published: September 2013

AbstractA Co‐porphyrin derived metalloradical catalyst having four (R,R)‐naphthylcyclopropyl carboxylic acid substituents is developed for the highly enantioselective aziridination of styrenes with fluoroaryl azides.
ChemInform Abstract: KG‐60‐Piperazine as a New Heterogeneous Catalyst for Gewald Three‐Component Reaction.
Authors: Rezaei‐Seresht Esmail , Tayebee Reza , Yasemi Mohammad 
Published: September 2013

AbstractCarbonyl compounds (I) react with malononitrile as well as ethyl cyanoacetate and sulfur in the presence of catalytic amounts of piperazine supported on amorphous silica to furnish aminothiophene derivatives (III) (14 examples) in good yield.
ChemInform Abstract: Complex N‐Heterocycle Synthesis via Iron‐Catalyzed, Direct C—H Bond Amination.
Authors: Hennessy Elisabeth T. , Betley Theodore A. 
Published: September 2013

AbstractThe synthesis of highly functionalized pyrrolidines and oxazolidines by an intramolecular C—H‐amination employing aliphatic azides as substrates is presented.
ChemInform Abstract: Preparation of Aryl‐Substituted 2‐Oxyindoles by Superelectrophilic Chemistry.
Authors: Naredla Rajasekhar Reddy , Raja Erum K. , Klumpp Douglas A. 
Published: September 2013

AbstractThe TfOH‐mediated Friedel—Crafts reaction of the 3‐hydroxy‐2‐oxyindole substrates with arenes proceeds via a dicationic, superelectrophilic species to give the products with high regioselectivity.
ChemInform Abstract: Consecutive Gold(I)‐Catalyzed Cyclization Reactions of o‐(Buta‐1,3‐diyn‐1‐yl‐)‐Substituted N‐Aryl Ureas: A One‐Pot Synthesis of Pyrimido[1,6‐a]indol‐1(2H)‐ones and Related Systems.
Authors: Sharp Phillip P. , Banwell Martin G. , Renner Jens , Lohmann Klaas , Willis Anthony C. 
Published: September 2013

AbstractTreatment of readily available o‐(buta‐1,3‐diyn‐1‐yl)‐substituted N‐aryl ureas with Echavarren′s gold(I) catalyst under microwave irradiation affords, via a twofold cyclization process, pyrimido[1,6‐a]indol‐1(2H)‐ones.
ChemInform Abstract: Synthesis of Densely Functionalized 3a,4‐Dihydro‐1H‐pyrrolo[1,2‐b]pyrazoles via Base Mediated Domino Reaction of Vinyl Malononitriles with 1,2‐Diaza‐1,3‐dienes.
Authors: Attanasi Orazio A. , Favi Gianfranco , Geronikaki Athina , Mantellini Fabio , Moscatelli Giada , Paparisva Aliki 
Published: September 2013

AbstractA domino reaction of 1,2‐diaza‐1,3‐dienes with vinyl malonitriles produces unprecedented 3a,4‐dihydro‐1H‐pyrrolo[1,2‐b]pyrazoles in a chemo‐ and regioselective fashion.
ChemInform Abstract: Design, Synthesis and in vitro Screening of New 1H‐Pyrazole and 1,2‐Isoxazole Derivatives as Potential Inhibitors for ROS and MAPK14 Kinases.
Authors: Al‐Sanea Mohammad M. , El‐deeb Ibrahim M. , Lee So Ha 
Published: September 2013

AbstractA new series of pyrazoles (VII) and their isoxazole analogues (VIII) are designed, synthesized and evaluated for the kinase inhibitory activity.
ChemInform Abstract: Facile Synthesis of 2‐Perfluoroalkylated Benzoxazolines and Benzothiazolines.
Authors: Bian Linglin , Lu Xuesheng , Xu Jiechao , Chen Jie , Deng Hongmei , Shao Min , Jin Yong , Zhang Hui , Cao Weiguo 
Published: September 2013

AbstractVarious new title compounds are synthesized under mild conditions.
ChemInform Abstract: Reaction of Nitrile Oxides with Masked o‐Benzoquinones; Synthesis of Highly Functionalized Isoxazolines.
Authors: Chittimalla Santhosh Kumar , Kuppusamy Rajesh , Thiyagarajan Kamalraj , Bandi Chennakesavulu 
Published: September 2013

AbstractThe reaction of the masked o‐benzoquinones with nitrile oxides, generated in situ from hydraxamoyl chlorides provides the expected [3 + 2]‐cycloaddition isoxazoline products of the type (V) or the rearranged isoxazolines of the type (III).
ChemInform Abstract: Efficient Enantioselective Synthesis of Dihydropyrans Using a Chiral N,N′‐Dioxide as Organocatalyst.
Authors: Feng Juhua , Fu Xuan , Chen Zhenling , Lin Lili , Liu Xiaohua , Feng Xiaoming 
Published: September 2013

AbstractA (S)‐proline‐derived chiral N‐oxide catalyst is successfully applied to an asymmetric cascade Michael/hemiacetalization reaction yielding multifunctionalized chiral dihydropyrans.
ChemInform Abstract: Novel Synthesis of 3‐Phenyl‐chromen‐4‐ones Using N‐Heterocylic Carbene as Organocatalyst: An Efficient Domino Catalysis Type Approach.
Authors: Mishra Priya , Singh Sarita , Ankit Preyas , Fatma Shahin , Singh Divya , Singh Jagdamba 
Published: September 2013

AbstractAn environmentally benign approach for the synthesis of isoflavones (III) by a simple and efficient organo‐catalyzed reaction of substituted phenacyl bromides and salicylaldehydes is given.
ChemInform Abstract: A Novel Lewis Acid Catalyzed [3 + 3]‐Annulation Strategy for the Syntheses of Tetrahydro‐β‐carbolines and Tetrahydroisoquinolines.
Authors: Wang Shaoyin , Chai Zhuo , Zhou Shuangliu , Wang Shaowu , Zhu Xiancui , Wei Yun 
Published: September 2013

AbstractThe newly developed title procedure represents a valuable complement to the classical Pictet‐Spengler reaction and enables facile access to alkaloid frameworks not easily available by established procedures.
ChemInform Abstract: Novel Racemic Tetrahydrocurcuminoid Dihydropyrimidinone Analogues as Potent Acetylcholinesterase Inhibitors.
Authors: Arunkhamkaew Sarawalee , Athipornchai Anan , Apiratikul Nuttapon , Suksamrarn Apichart , Ajavakom Vachiraporn 
Published: September 2013

AbstractA variety of the title pyrimidinone derivatives (IV) (12 examples) are synthesized utilizing a CuSO4‐catalyzed multicomponent Biginelli reaction.
ChemInform Abstract: A Convenient Palladium‐Catalyzed Carbonylative Synthesis of 2‐Aminobenzoxazinones from 2‐Bromoanilines and Isocyanates.
Authors: Wu Xiao‐Feng , Sharif Muhammad , Shoaib Khurram , Neumann Helfried , Pews‐Davtyan Anahit , Langer Peter , Beller Matthias 
Published: September 2013

AbstractCompared with previously described methods for the synthesis of 2‐aminobenzoxazinones, Mo(CO)6 is applied as a solid CO source instead of gas in this procedure.
ChemInform Abstract: Microwave Synthesis of Chiral N‐Benzyl‐2‐methyl‐2H‐benzo[b][1,4]oxazin/thiazin‐3(4H)‐ones via Smiles Rearrangement and Their Biological Evaluation.
Authors: Meng Li‐juan , Zuo Hua , Vijaykumar B. V. D. , Dupati Gautam , Choi Kyung‐Min , Jang Kiwan , Yoon Yon‐Jin , Shin Dong‐Soo 
Published: September 2013

AbstractMost of the synthesized compounds (V) show good inhibition against Gram positive bacteria and fungi.
ChemInform Abstract: Synthesis of New Dibenzo‐tetraaza and Dibenzo‐dioxadiaza[14]annulene Derivatives Using 3‐Bromo‐Substituted Vinamidinium Salt.
Authors: Mehranpour A. M. , Hashemnia S. , Bashiri E. 
Published: September 2013

AbstractSix new dibenzotetraaza‐ and dibenzodioxadiaza[14]annulene derivatives such as (III) and (V) are synthesized via a twofold condensation reaction of bromo‐substituted vinamidinium salt (I) with aromatic diamines and aminophenols.
ChemInform Abstract: Enantioselective Relay Catalytic Cascade Intramolecular Hydrosiloxylation and Mukaiyama Aldol Reaction.
Authors: Wang Pu‐Sheng , Li Kang‐Nan , Zhou Xiao‐Le , Wu Xiang , Han Zhi‐Yong , Guo Rui , Gong Liu‐Zhu 
Published: September 2013

AbstractThe title reaction gives synthetically useful products in high yields and with excellent enantioselectivity.
ChemInform Abstract: Ugi Four‐Component Reaction with Tandem Deprotection, Cyclization and Pictet—Spengler Reaction: A Concise Route to N‐Fused Polycyclic Indolediketopiperazine Alkaloid Analogues.
Authors: Tyagi Vikas , Khan Shahnawaz , Chauhan Prem M. S. 
Published: September 2013

AbstractThe concise and operationally simple two‐step protocol allows the synthesis of trans‐configurated target compounds (VII) and (IX) with high stereoselectivity.
ChemInform Abstract: 6‐(Arylmethyl)pyrimidin‐4(3H)‐ones: Anthology and Prospects of Highly Efficient anti‐HIV Agents
Authors: Novakov I. A. , Artico M. , Mai A. , Rotili D. , Orlinson B. S. , Brunilina L. L. , Nawrozkij M. B. 
Published: September 2013

AbstractReview: 257 refs.
Dynamic and hierarchical IPv6 address configuration for a mobile ad hoc network
Authors: Wang Xiaonan , Qian Huanyan 
Published: September 2013

SUMMARYThe paper proposes a dynamic and hierarchical IPv6 address configuration scheme for a mobile ad hoc network (MANET). The scheme proposes the hierarchical architecture and combines the distributed and centralized address configuration approaches. In the architecture, a central node assigns IPv6 addresses for cluster heads that are distributed around a MANET, and distributed cluster heads assign IPv6 addresses for cluster members. The generation algorithm of a cluster is proposed, and it uses the number of potential cluster members as a measurement unit and minimizes the number of cluster heads. Therefore, the address configuration cost for cluster heads is reduced. A central node/cluster head uses the unicast communication mode to achieve the real‐time address recovery in order to ensure that it has enough address resources for assignment. The paper also proposes the low‐cost MANET merging/partitioning algorithm that guarantees that no address collision happens during the MANET merging/partitioning process. This paper analyzes the performance parameters of the proposed scheme, including the address configuration cost, the address configuration delay, and the number of MANET merging. The analytical results show that the proposed scheme effectively reduces the address configuration cost, shortens the address configuration delay, and decreases the number of MANET merging. Copyright © 2013 John Wiley & Sons, Ltd.
Birth seasonality and calf mortality in a large population of Asian elephants
Authors: Mumby Hannah S. , Courtiol Alexandre , Mar Khyne U. , Lummaa Virpi 
Published: September 2013

AbstractIn seasonal environments, many species concentrate their reproduction in the time of year most likely to maximize offspring survival. Asian elephants (Elephas maximus) inhabit regions with seasonal climate, but females can still experience 16‐week reproductive cycles throughout the year. Whether female elephants nevertheless concentrate births on periods with maximum offspring survival prospects remains unknown. We investigated the seasonal timing of births, and effects of birth month on short‐ and long‐term mortality of Asian elephants, using a unique demographic data set of 2350 semicaptive, longitudinally monitored logging elephants from Myanmar experiencing seasonal variation in both workload and environmental conditions. Our results show variation in birth rate across the year, with 41% of births occurring between December and March. This corresponds to the cool, dry period and the beginning of the hot season, and to conceptions occurring during the resting, nonlogging period between February and June. Giving birth during the peak December to March period improves offspring survival, as the odds for survival between age 1 and 5 years are 44% higher for individuals born during the high birth rate period than those conceived during working months. Our results suggest that seasonal conditions, most likely maternal workload and/or climate, limit conception rate and calf survival in this population through effects on maternal stress, estrus cycles, or access to mates. This has implications for improving the birth rate and infant survival in captive populations by limiting workload of females of reproductive age. As working populations are currently unsustainable and supplemented through the capture of wild elephants, it is imperative to the conservation of Asian elephants to understand and alleviate the effects of seasonal conditions on vital rates in the working population in order to reduce the pressure for further capture from the wild.
Behavioral signature of intraspecific competition and density dependence in colony‐breeding marine predators
Authors: Breed Greg A. , Don Bowen W. , Leonard Marty L. 
Published: September 2013

AbstractIn populations of colony‐breeding marine animals, foraging around colonies can lead to intraspecific competition. This competition affects individual foraging behavior and can cause density‐dependent population growth. Where behavioral data are available, it may be possible to infer the mechanism of intraspecific competition. If these mechanics are understood, they can be used to predict the population‐level functional response resulting from the competition. Using satellite relocation and dive data, we studied the use of space and foraging behavior of juvenile and adult gray seals (Halichoerus grypus) from a large (over 200,000) and growing population breeding at Sable Island, Nova Scotia (44.0 oN 60.0 oW). These data were first analyzed using a behaviorally switching state‐space model to infer foraging areas followed by randomization analysis of foraging region overlap of competing age classes. Patterns of habitat use and behavioral time budgets indicate that young‐of‐year juveniles (YOY) were likely displaced from foraging areas near (<10 km) the breeding colony by adult females. This displacement was most pronounced in the summer. Additionally, our data suggest that YOY are less capable divers than adults and this limits the habitat available to them. However, other segregating mechanisms cannot be ruled out, and we discuss several alternate hypotheses. Mark–resight data indicate juveniles born between 1998 and 2002 have much reduced survivorship compared with cohorts born in the late 1980s, while adult survivorship has remained steady. Combined with behavioral observations, our data suggest YOY are losing an intraspecific competition between adults and juveniles, resulting in the currently observed decelerating logistic population growth. Competition theory predicts that intraspecific competition resulting in a clear losing competitor should cause compensatory population regulation. This functional response produces a smooth logistic growth curve as carrying capacity is approached, and is consistent with census data collected from this population over the past 50 years. The competitive mechanism causing compensatory regulation likely stems from the capital‐breeding life‐history strategy employed by gray seals. This strategy decouples reproductive success from resources available around breeding colonies and prevents females from competing with each other while young are dependent.
Assessing radial transmissivity variation in heterogeneous aquifers using analytical techniques
Authors: Avci Cem B. , Ufuk Sahin A. 
Published: September 2013

AbstractPumping tests are one of the most commonly used in situ testing techniques for assessing aquifer hydraulic properties. Numerous researches have been conducted to predict the effects of aquifer heterogeneity on the groundwater levels during pumping tests. The objectives of the present work were as follows: (1) to predict drawdown conditions and to estimate aquifer properties during pumping tests undertaken in radially symmetric heterogeneous aquifers, and (2) to identify a method for assessing the transmissivity field along the radial coordinate in radially symmetric and fully heterogeneous transmissivity fields. The first objective was achieved by expanding an existing analytical drawdown formulation that was valid for a radially symmetric confined aquifer with two concentric zones around the pumping well to an N concentric zone confined aquifer having a constant transmissivity value within each zone. The formulation was evaluated for aquifers with three and four concentric zones to assess the effects of the transmissivity field on the drawdown conditions. The specific conditions under which aquifer properties could be identified using traditional methods of analysis were also evaluated. The second objective was achieved by implementing the inverse solution algorithm (ISA), which was developed for petroleum reservoirs to groundwater aquifer settings. The results showed that the drawdown values are influenced by a volumetric integral of a weighting function and the transmissivity field within the cone of depression. The weighting function migrates in tandem with the expanding cone of depression. The ability of the ISA to predict radially symmetric and log‐normally distributed transmissivity fields was assessed against analytical and numerical benchmarks. The results of this investigation indicated that the ISA method is a viable technique for evaluating the radial transmissivity variations of heterogeneous aquifer settings. Copyright © 2013 John Wiley & Sons, Ltd.
Single‐case Design: The Neglected Alternative for the Evaluation of Family Therapy*
Authors: Cross Darryl G. 
Published: September 2013

ABSTRACTFamily therapy (as with other treatment forms) needs to demonstrate its efficacy, but a major obstacle to the development and evaluation of therapeutic techniques in family therapy in particular, has been the almost total reliance on what is called classical group comparisons (e.g., treatment versus no‐treatment groups). The focus on group comparisons, however, has meant a complete disregard for a methodology that is also highly appropriate; single‐case design (or intrasubject replication) where the sample size is N = 1. In recent times, there has been an increasing disenchantment with classical group design for a number of reasons. For example, group comparisons are not always feasible in many clinical settings and tend to lack relevance for the practitioner's daily functioning. This paper elaborates these kinds of reasons and outlines the major advantages of using single‐case design. There is little doubt that single‐case methodology is becoming increasingly popular as an important research tool that can no longer be disregarded. Its specific applicability to evaluative research in family therapy is particularly appealing.