bluuebunny/crossref_metadata_2025_split huggingface dataset:
ChemInform Abstract: Phenanthridine or Isoquinoline Are Good Reagents for the Synthesis of Enamino Esters.
Authors: Nassiri Mahmoud , Heydari Reza , Hazeri Nourollah , Habibi‐Khorassani Sayyed Mostafa , Maghsoodlou Malek Taher , Milani Forough Jalili 
Published: April 2011

AbstractA new method to synthesize a novel class of heterocyclic derivatives, e.g. (IV), (VI), and (IX) is presented.
ChemInform Abstract: Lewis Acid‐Catalyzed C—H Functionalization for Synthesis of Isoindolinones and Isoindolines.
Authors: Qian Bo , Guo Shengmei , Xia Chungu , Huang Hanmin 
Published: April 2011

Abstract2‐Substituted azaarenes such as (II), (VI), and (X) are functionalized with N‐sulfonylaldimines using Sc(OTf)3 as catalyst.
ChemInform Abstract: A New, Efficient and Recyclable Lanthanum(III) Oxide‐Catalyzed C—N Cross‐Coupling.
Authors: Murthy S. Narayana , Madhav B. , Reddy V. Prakash , Nageswar Y. V. D. 
Published: April 2011

AbstractThe inexpensive catalytic system is highly effective to the amination of aryl iodides with various primary and secondary amines or nitrogen heterocycles.
ChemInform Abstract: Efficient Hydrosilylation of Carbonyl Compounds with the Simple Amide Catalyst [Fe{N(SiMe3)2}2].
Authors: Yang Jian , Tilley T. Don 
Published: April 2011

AbstractFe(NTms2)2 represents a novel cost‐effective, environmentally benign catalyst for the hydrosilylation of carbonyl compounds at room temperature.
ChemInform Abstract: MCM‐41 Grafted Quaternary Ammonium Salts as Recyclable Catalysts for the Sequential Synthesis of Dimethyl Carbonate from Epoxides, CO2, and Methanol.
Authors: Li Jian , Wang Liguo , Liu Shimin , Li Xueli , Shi Feng , Deng Youquan 
Published: April 2011

AbstractThe title catalyst exhibits excellent performance and good reusability.
ChemInform Abstract: Synthesis of Multi‐Substituted Cyclobutanes and Alkylidenecyclobutanes by the Reaction of Cyclobutylmagnesium Carbenoids with Nucleophiles.
Authors: Satoh Tsuyoshi , Kasuya Takashi , Ishigaki Masashi , Inumaru Mio , Miyagawa Toshifumi , Nakaya Nobuhito , Sugiyama Shimpei 
Published: April 2011

AbstractTreatment of 2‐chlorocyclobutyl p‐tolyl sulfoxides with Grignard reagents at low temperature generates cyclobutylmagnesium carbenoids which can be coupled with a variety of nucleophiles.
ChemInform Abstract: Synthesis of 3‐Methyl‐2‐cyclohexenones Catalyzed by Mercury(II) Salts and Their Microwave Assisted BiCl3 Catalyzed Aldol Condensations.
Authors: Zhang Chen , Wang Bi‐Song , Chen Shi‐Feng , Zhang Shao‐Qiao , Cui Dong‐Mei 
Published: April 2011

AbstractTreatment of 1,6‐heptadiynes with water in the presence of HgSO4and TfOH allows mild access to 3‐methyl‐2‐cyclohexenones.
ChemInform Abstract: Copper‐Catalyzed Direct Synthesis of Di‐ and Triphenylamines: A Dramatic Accelerating Effect of 2‐Aminophenols.
Authors: Li Yaming , Wang Huifeng , Jiang Linlin , Sun Fangfang , Fu Xinmei , Duan Chunying 
Published: April 2011

AbstractCopper‐catalyzed selective N‐arylation and N,N‐diarylation of o‐aminophenol derivatives with aryl halides is smoothly achieved using the self‐accelerating effect of o‐aminophenols.
ChemInform Abstract: Regioselective Alkylation of Heteroaromatic Compounds with 3‐Methyl‐2‐quinonyl Boronic Acids.
Authors: Veguillas Marcos , Ribagorda Maria , Carreno M. Carmen 
Published: April 2011

AbstractThe process results in efficient and unexpected formation of 5,5‐disubstituted cyclohexene‐1,4‐diones.
ChemInform Abstract: Ligand‐Free Copper‐Catalyzed Arylation of Olefins by the Mizoroki—Heck Reaction.
Authors: Peng Yong , Chen Jiuxi , Ding Jinchang , Liu Miaochang , Gao Wenxia , Wu Huayue 
Published: April 2011

AbstractThe reaction gives (E)‐internal olefins in good yields when aryl iodides are applied.
ChemInform Abstract: An Activated Catalyst RhH(PPh3)4‐dppe‐Me2S2 for α‐Methylthiolation of α‐Phenyl Ketones.
Authors: Arisawa Mieko , Toriyama Fumihiko , Yamaguchi Masahiko 
Published: April 2011

AbstractIn continuation of a known principle, methylthio transfer reactions between p‐cyano‐α‐methylthioacetophenone (I) and different α‐phenyl ketones are described.
ChemInform Abstract: A Base‐Free, One‐Pot Diazotization/Cross‐Coupling of Anilines with Arylboronic Acids.
Authors: Mo Fanyang , Qiu Di , Jiang Yubo , Zhang Yan , Wang Jianbo 
Published: April 2011

AbstractThe process can be conducted in a one‐step or two‐step manner due to the reactivity of the substrates.
ChemInform Abstract: Selective C3—C3 Oxidative Cross‐Coupling Between Unactivated Anilines and Indoles.
Authors: Wang Linfei , Han Zhaomeng , Fan Renhua 
Published: April 2011

AbstractBoth electron‐donating and electron‐withdrawing groups on the indole ring are tolerated, whereas an electron‐withdrawing group on the nitrogen atom of p‐toluidine is essential for the coupling reaction.
ChemInform Abstract: Broensted Acid Catalyzed Alkylation of Indoles with Tertiary Propargylic Alcohols: Scope and Limitations.
Authors: Sanz Roberto , Miguel Delia , Martinez Alberto , Gohain Mukut , Garcia‐Garcia Patricia , Fernandez‐Rodriguez Manuel A. , Alvarez Estela , Rodriguez Felix 
Published: April 2011

AbstractDirect alkylation of a variety of indole derivatives with propargylic alcohols containing a quaternary carbon at the propargylic position (II) and (IV) is smoothly achieved in the presence of TosOH.
ChemInform Abstract: Palladium‐Catalyzed Enantioselective Ene and Aldol Reactions with Isatins, Keto Esters, and Diketones: Reliable Approach to Chiral Tertiary Alcohols.
Authors: Aikawa Kohsuke , Mimura Shunsuke , Numata Yukinobu , Mikami Koichi 
Published: April 2011

AbstractChiral dicationic Pd complexes catalyze enantioselective ene and aldol reactions with various isatin derivatives to give 3‐hydroxy‐2‐oxindole products bearing tertiary alcohols.
ChemInform Abstract: A New Route to 5‐Chloropyrazole‐4‐carbaldehydes and Their Behavior in the Baylis—Hillman Reaction.
Authors: Zhong Weihui , Chen Xiao , Shen Yanyan 
Published: April 2011

AbstractThe title compounds (III) react in the Baylis—Hillman reaction to the compounds (V), (VII), and (IX) with incomplete conversion.
ChemInform Abstract: A Novel and Practical Synthesis of 2‐Benzoylbenzothiazoles and 2‐Benzylbenzothiazoles.
Authors: Fan Xuesen , He Yan , Wang Yangyang , Xue Zaikun , Zhang Xinying , Wang Jianji 
Published: April 2011

AbstractA novel tandem process including oxidative cyclization of 2‐aminothiophenols with aldehydes and subsequent benzylic oxidation allows the preparation of 2‐benzoylbenzothiazoles (III).
ChemInform Abstract: Copper‐Catalyzed Direct Sulfoximination of Azoles and Polyfluoroarenes under Ambient Conditions.
Authors: Miyasaka Mitsuru , Hirano Koji , Satoh Tetsuya , Kowalczyk Rafal , Bolm Carsten , Miura Masahiro 
Published: April 2011

AbstractThe combination of K3PO4 and DMF is crucial for high yields.
ChemInform Abstract: Triflic Acid Promoted Aza‐Prins‐Ritter Reaction Sequence: A Novel Synthesis of 4‐Amidopiperidine Derivatives.
Authors: Reddy B. V. S. , Ramesh K. , Ganesh A. V. , Kumar G. G. K. S. N. , Yadav J. S. , Gree Rene 
Published: April 2011

AbstractThe protocol yields trans‐2,4‐disubstituted piperidines (IV) under mild conditions.
ChemInform Abstract: Enantiospecific Approach to AB‐Ring System of the Diterpenes Fusicoccanes.
Authors: Srikrishna A. , Nagaraju Gopalasetty 
Published: April 2011

AbstractA ring‐closing metathesis based approach to the AB‐ring system of fusicoccanes and ophiobolins is reported starting from the readily available (R)‐limonene (I).
ChemInform Abstract: Two‐Dimensional Nanosheets Produced by Liquid Exfoliation of Layered Materials.
Authors: Coleman Jonathan N. , et al. et al. 
Published: April 2011

AbstractLayered compounds such as MoS2, WS2, MoSe2, TaSe2, NbSe2, NiTe2, BN, and Bi2Te3 are exfoliated by sonication of powders of the materials in a number of solvents with varying surface tensions and deposited as individual flakes or formed into films.
Feasibility of an expressive‐disclosure group intervention for post‐treatment colorectal cancer patients
Authors: Carmack Cindy L. , Basen‐Engquist Karen , Yuan Ying , Greisinger Anthony , Rodriguez‐Bigas Miguel , Wolff Robert A. , Barker Trina , Baum George , Pennebaker James W. 
Published: April 2011

AbstractBACKGROUND:Adjusting to cancer requires effective cognitive and emotional processing. Written and verbal disclosure facilitate processing and have been studied independently in cancer survivors. Combined written and verbal expression may be more effective than either alone, particularly for patients with difficult to discuss or embarrassing side effects. Thus, the authors developed and tested the efficacy of a 12‐session combined written and verbal expression group program for psychologically distressed colorectal cancer (CRC) patients.METHODS:Forty post‐treatment patients with CRC (stages I‐III) identified as psychologically distressed using the Brief Symptom Inventory (BSI) were randomized to an intervention group (Healthy Expressions; n = 25) or standard care (control group; n = 15). Assessments were completed at baseline, Month 2, and Month 4 (postintervention). Primary outcomes were psychological functioning and quality of life (QOL).RESULTS:Most participants were women (63%), white (63%), and non‐Hispanic (75%). The Healthy Expressions group demonstrated significantly greater changes in distress compared with the control group at Month 2 on the BSI Global Severity Index (GSI) and the Centers for Epidemiologic Studies Depression scale (CES‐D) scores (P < .05 for each); differences in the European Organization for Research and Treatment of Cancer (EORTC) global QOL scores approached significance (P = .063). The BSI GSI and Positive Symptom Total, CES‐D, and EORTC emotional functioning subscale scores were all significant at Month 4 (P < .05 for each).CONCLUSIONS:The Healthy Expressions program improved psychological functioning in CRC patients who reported experiencing distress. Findings demonstrate the program's feasibility and provide strong support for conducting a larger randomized trial. Cancer 2011;. © 2011 American Cancer Society.
Synthesis and Application of New Guanidine Copper Complexes in Atom Transfer Radical Polymerisation
Authors: Bienemann Olga , Haase Roxana , Jesser Anton , Beschnitt Tanja , Döring Artjom , Kuckling Dirk , dos Santos Vieira Ines , Flörke Ulrich , Herres‐Pawlis Sonja 
Published: April 2011

AbstractThe synthesis and copper coordination of the ligandsTMGdipae (L1) and DMEGdipae (L2) is reported. The solid‐state structures of obtained copper complexes [Cu(TMGdipae)Cl] (C1), [Cu(TMGdipae)Br] (C2), [Cu(TMGdipae)I] (C3), [Cu(DMEGdipae)Cl] (C4), [Cu(DMEGdipae)Br] (C5) and [Cu(DMEGdipae)I] (C6) show a trigonal distorted [2+1] coordination of the copper atom and indicate interesting binding properties of aliphatic guanidine hybrid ligands. DFT analysis and calculation of the intramolecular charge transfer by NBO studies allow for a deeper insight into the binding competition between guanidine, amine and halide donor at copper(I). Tetramethylguanidine units act as stronger donors than dimethylethyleneguanidine units. Both ligands in combination with CuCl and CuBr were screened with regard to their activity in atom transfer radical polymerisation of styrene in bulk and in MeCN solution. The polymerisation occurs very fast and has good control. Kinetic studies on the best‐behaving system (2TMGdipae/CuBr) evidence that controlled radical polymerisation occurs until a conversion of 70 % and a polymerisation time of 100 min, after this a deviation towards higher molecular weights can be observed.
Depth‐integrated free‐surface flow with a two‐layer non‐hydrostatic formulation
Authors: Bai Yefei , Cheung Kwok Fai 
Published: April 2011

SUMMARYThis paper presents the derivation of a depth‐integrated wave propagation and runup model from a system of governing equations for two‐layer non‐hydrostatic flows. The governing equations are transformed into an equivalent, depth‐integrated system, which separately describes the flux‐dominated and dispersion‐dominated processes. The depth‐integrated system reproduces the linear dispersion relation within a 5 error for water depth parameter up to kd = 11, while allowing direct implementation of a momentum conservation scheme to model wave breaking and a moving‐waterline technique for runup calculation. A staggered finite‐difference scheme discretizes the governing equations in the horizontal dimension and the Keller box scheme reconstructs the non‐hydrostatic terms in the vertical direction. An semi‐implicit scheme integrates the depth‐integrated flow in time with the non‐hydrostatic pressure determined from a Poisson‐type equation. The model is verified with solitary wave propagation in a channel of uniform depth and validated with previous laboratory experiments for wave transformation over a submerged bar, a plane beach, and fringing reefs. Copyright © 2011 John Wiley & Sons, Ltd.
Efficiency of the Eulerian–Lagrangian localized adjoint method for solving advection–dispersion equations on highly heterogeneous media
Authors: Ramasomanana Fanilo , Younes Anis 
Published: April 2011

SUMMARYThe Eulerian–Lagrangian Localized Adjoint Method (ELLAM) is well adapted for advection‐dominated transport problems. The method can use large time steps because the advection term is accurately approximated without any CFL restriction.A new formulation of ELLAM was developed by Younes et al. (Adv. Water Resour. 2006; 29:1056–1074) for unstructured triangular meshes. This formulation uses only strategic numerical integration points and thus requires a very limited number of integration points (usually 1 per element). To avoid numerical dispersion due to interpolation when several time steps are used, the method continuously tracks characteristics, and only changes due to dispersion are interpolated at each time step.In this work, we study the applicability and efficiency of this formulation for highly heterogeneous domains. The results show that (i) this formulation remains efficient even for highly heterogeneous domains, (ii) special care must be taken for the approximation of the dispersive term when large time steps are used, (iii) interpolation at intermediate times can be used to reduce memory requirement for problems with a large number of elements and small time steps, and (iv) the method can be used successfully for heterogeneous problems including injection and pumping wells, and remains much more efficient than the discontinuous Galerkin finite element method even when small time steps are required. Copyright © 2011 John Wiley & Sons, Ltd.
Kopswerk II headrace tunnel – construction of the pressure tunnel and associated works / Triebwasserstollen Kopswerk II – Bauarbeiten Druckstollen und Nebenanlagen
Authors: Schnetzer Herbert , Gerstner Reinhold 
Published: April 2011

AbstractThe article concerns the construction of the Kopswerk II pressure tunnel and associated works. Important details of the construction and construction sequence are described, particularly the logistics of a large site in the high mountains. In addition to a summary of the various drill and blast tunnels, the article concentrates on the TBM drive and the drilling and grouting works in the pressure tunnel.Der Beitrag befasst sich mit den Bauarbeiten für den Druckstollen des Kopswerkes II und dessen Nebenanlagen. Dabei werden die Eckpfeiler der Bauausführung und des Bauablaufes, insbesondere auch die Logistik einer Baustelle im Hochgebirge beschrieben. Neben einem Abriss über die verschiedenen Sprengvortriebe wird vor allem über den TBM‐Vortrieb und die Bohr‐ und Injektionsarbeiten im Druckstollen berichtet.
First operational experience with a high‐pressure tunnel with innovative lining methods / Erste Betriebserfahrungen bei einem Hochdruckstollen mit innovativen Ausbaumethoden
Authors: Gober Hansjörg , Nackler Karl 
Published: April 2011

AbstractA tunnel lining system of glass fibre reinforced (GRP) was used for the first time for the construction of the Feldsee pumped storage power station – integrated in the Fragant power station group of KELAG‐Kärntner Elektrizitäts‐AG. This innovative solution, together with the prestressed concrete backfilling, required more elaborate planning and very exact monitoring during construction, but proved considerably more cost effective compared to classic steel armouring. One of the most important questions was how the new system would overcome formation water pressure. The drainage of the tunnel after 20 months of operation has made it possible to gain the first practical experience and the conformation of the system.Beim Bau des Pumpspeicherkraftwerks Feldsee – integriert in die Kraftwerksgruppe Fragant der KELAG‐Kärntner Elektrizitäts‐AG – kam erstmals eine Stollenpanzerung aus glasfaserverstärktem Kunststoff (GFK) zur Anwendung. Diese innovative Lösung im Zusammenhang mit dem vorgespannten Hinterfüllbeton erforderte eine aufwendigere Planung und ein sehr genaues Monitoring während der Ausführung, war aber im Vergleich zur klassischen Stahlpanzerung erheblich kostengünstiger. Eine der Kernfragen war die Beherrschung des Gebirgswasserdrucks mit dem neuen System. Anlässlich einer Stollenentleerung nach 20monatiger Betriebszeit konnten erste praktische Erkenntnisse gewonnen werden, die das System bestätigten.
Folic acid supplementation during early hepatocarcinogenesis: Cellular and molecular effects
Authors: Chagas Carlos Eduardo Andrade , Bassoli Bruna Kempfer , de Souza Camila Alexandre Soares , Deminice Rafael , Júnior Alceu Afonso Jordão , Paiva Sérgio Alberto Rupp , Dagli Maria Lúcia Zaidan , Ong Thomas Prates , Moreno Fernando Salvador 
Published: April 2011

AbstractFolic acid (FA) supplementation during carcinogenesis is controversial. Considering the impact of liver cancer as a public health problem and mandatory FA fortification in several countries, the role of FA supplementation in hepatocarcinogenesis should be elucidated. We evaluated FA supplementation during early hepatocarcinogenesis. Rats received daily 0.08 mg (FA8 group) or 0.16 mg (FA16 group) of FA/100 g body weight or water (CO group, controls). After a 2‐week treatment, animals were subjected to the “resistant hepatocyte” model of hepatocarcinogenesis (initiation with diethylnitrosamine, selection/promotion with 2‐acetylaminofluorene and partial hepatectomy) and euthanized after 8 weeks of treatment. Compared to the CO group, the FA16 group presented: reduced (p < 0.05) number of persistent and increased (p < 0.05) number of remodeling glutathione S‐transferase (GST‐P) positive preneoplastic lesions (PNL); reduced (p < 0.05) cell proliferation in persistent GST‐P positive PNL; decreased (p < 0.05) hepatic DNA damage; and a tendency (p < 0.10) for decreased c‐myc expression in microdissected PNL. Regarding all these parameters, no differences (p > 0.05) were observed between CO and FA8 groups. FA‐treated groups presented increased hepatic levels of S‐adenosylmethionine but only FA16 group presented increased S‐adenosylmethionine/S‐adenosylhomocysteine ratio. No differences (p > 0.05) were observed between experimental groups regarding apoptosis in persistent and remodeling GST‐P positive PNL, and global DNA methylation pattern in microdissected PNL. Altogether, the FA16 group, but not the FA8 group, presented chemopreventive activity. Reversion of PNL phenotype and inhibition of DNA damage and of c‐myc expression represent relevant FA cellular and molecular effects.
EVALUATION OF GROUNDWATER RESOURCES AND ESTIMATION OF STAGE OF GROUNDWATER DEVELOPMENT IN A BASIN – A CASE STUDY
Authors: Pradeep Kumar G. N. , Srinivas P. 
Published: April 2011

ABSTRACTRapid industrial development, urbanization and increase in agricultural production have led to freshwater shortage in many parts of the world. For sustainable development of water resources, it is imperative to make quantitative estimations of the available water resources. The study area, the Kurmapalli Vagu Basin, is located in the semi‐arid tropics of the Deccan Plateau and is a chronic drought‐prone, backward and endemic fluoride area. Hence evaluation of groundwater resources and stage of groundwater development of the Kurmapalli Vagu Basin was carried out utilizing remote sensing and geographical information system techniques in conjunction with conventional methods. The arithmetic average method was used to compute the total quantity of water from precipitation received by the basin. The groundwater resources were evaluated based on Groundwater Resource Estimation Committee norms. Groundwater recharge from rainfall, canals, return flow of irrigation, minor irrigation tanks and water conservation structures were also estimated. The total groundwater recharge and annual utilizable groundwater resources from various sources were computed. The net annual groundwater draft was estimated based on the number and type of wells and unit draft. The groundwater balance of the basin works out to be 1.95 MCM. The stage of groundwater development for the Kurmapalli Vagu Basin as on date works out to be 80.6% which falls in the semi‐critical category. Suggestions have been made for proper augmentation of groundwater resources. Further, to ensure sustainable development of the basin water‐harvesting structures have been proposed. Copyright © 2011 John Wiley & Sons, Ltd.
“Why do they have to grow up so fast?” Parental separation anxiety and emerging adults' pathology of separation‐individuation
Authors: Kins Evie , Soenens Bart , Beyers Wim 
Published: April 2011

AbstractThis study examined associations between parental separation anxiety, controlling parenting, and difficulties in the separation‐individuation process, as manifested in separation‐individuation pathology. In a sample of emerging adults involved in the process of home leaving (N=232) and their parents, it was found that parental separation anxiety is positively related to separation‐individuation pathology in emerging adults. Dependency‐oriented controlling parenting served as an intervening variable in the relationship between parents' feelings of separation anxiety and pathology of the separation‐individuation process in emerging adults. These associations were not moderated by emerging adults' residential status (i.e., living with parents or (semi‐)independently), suggesting that parental characteristics and behaviors remain important antecedents of separation‐individuation pathology even when one no longer lives in the parental household. © 2011 Wiley Periodicals, Inc. J Clin Psychol 67:1–18, 2011.
Relationship between the working alliance and social support on counseling outcome
Authors: Leibert Todd W. , Smith Julia B. , Agaskar Vaibhavee R. 
Published: April 2011

AbstractThe purpose of this study was to test the impact of two predictor variables, one representing extratherapeutic factors and one representing relationship factors, on outcome at a university counseling training clinic. A naturalistic design was used to collect session‐by‐session outcomes on 135 clients seen by 88 counselors. Hierarchical linear modeling was used to test hypotheses about the effects of clients' pretreatment social support (extratherapeutic factor) and working alliance (relationship factor) at session 3 on change over time. Results showed that higher rated alliances predicted greater change over the first 8 sessions. When clients reported poorer social supports, the therapeutic alliance was even more important in predicting a positive outcome. Limitations of the design and implications for further outcome studies are discussed. © 2011 Wiley Periodicals, Inc. J Clin Psychol 67:1–11, 2011.