bluuebunny/crossref_metadata_2025_split huggingface dataset:
Medium‐Size Cyclophanes. Part 69. Synthesis and ipso‐Nitration of Di‐tert‐butyl‐1,2‐dimethyl[2.10]metacyclophan‐1‐enes.
Authors: Yamato Takehiko , Hironaka Tohru , Miyamoto Shinpei 
Published: October 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Domino Metal‐Free Allene‐β‐lactam‐Based Access to Functionalized Pyrroles.
Authors: Alcaide Benito , Almendros Pedro , Redondo Maria C. 
Published: October 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Efficient and Practical Synthesis of Mannich Bases Related to Gramine Mediated by Zinc Chloride.
Authors: Dai Hong‐Guang , Li Ji‐Tai , Li Tong‐Shuang 
Published: October 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Preparation of 7‐Halo‐indoles by Thallation of N‐Formylindoline and Their Attempted Use for Synthesis of the Right‐Hand Segment of Chloropeptin.
Authors: Yamada Yaeko , Arima Shiho , Okada Chiharu , Akiba Ai , Kai Toshitsugu , Harigaya Yoshihiro 
Published: October 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
A General Method for the Preparation of 3‐Acyl‐4‐cyano‐5‐amino‐pyrazoles.
Authors: Ge Min , Cline Eric , Yang Lihu 
Published: October 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Synthesis of 1,5‐Disubstituted 4‐Haloimidazoles from α‐Aminonitriles.
Authors: Pawar Vijaykumar G. , De Borggraeve Wim M. , Robeyns Koen , Van Meervelt Luc , Compernolle Frans , Hoornaert Georges 
Published: October 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Enantioselective Nitrone Cycloadditions of α,β‐Unsaturated 2‐Acyl Imidazoles Catalyzed by Bis(oxazolinyl)pyridine—Cerium(IV) Triflate Complexes.
Authors: Evans David A. , Song Hyun‐Ji , Fandrick Keith R. 
Published: October 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Organocatalysis “on Water”. Regioselective [3 + 2]‐Cycloaddition of Nitrones and Allenolates.
Authors: Gonzalez‐Cruz David , Tejedor David , de Armas Pedro , Morales Ezequiel Q. , Garcia‐Tellado Fernando 
Published: October 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Asymmetric 1,3‐Dipolar Cycloaddition of Nitrones with an Electron‐Withdrawing Group to Allylic Alcohols Utilizing Diisopropyl Tartrate as a Chiral Auxiliary.
Authors: Ding Xia , Taniguchi Katsumi , Hamamoto Yoshihara , Sada Kazunori , Fujinami Shuhei , Ukaji Yutaka , Inomata Katsuhiko 
Published: October 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
New Isothiazole Derivatives: Synthesis, Reactivity, Physiochemical Properties and Pharmacological Activity.
Authors: Regiec Andrzej , Machon Zdzislaw , Miedzybrodzki Ryszard , Szymaniec Stanislaw 
Published: October 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Studies with Heteroaromatic Amines. A New Route to 2‐Azolylamino‐2‐thiazolin‐4‐ones.
Authors: Al‐Zaydi Khadijah M. , Al‐Shamary Asma , Elnagdi Mohamed H. 
Published: October 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Microwave Assisted Rapid and Efficient Synthesis of Nitrogen and Sulfur Containing Heterocyclic Compounds and Their Pharmacological Evaluation.
Authors: Mistry Ketan , Desai K. R. 
Published: October 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Regio‐ and Stereoselective Synthesis of Methyl 5‐Methylenetetrahydropyran‐3‐carboxylates from Baylis—Hillman Adducts via Allyltributylstannane‐Mediated Radical Cyclization.
Authors: Gowrisankar Saravanan , Lee Ka Young , Kim Taek Hyeon , Kim Jae Nyoung 
Published: October 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Clean, One‐Pot Synthesis of Naphthopyran Derivatives in Aqueous Media.
Authors: Jin Tong‐Shou , Zhang Jian‐She , Liu Li‐Bin , Wang Ai‐Qing , Li Tong‐Shuang 
Published: October 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
First C‐3 Lithiation of DMAP: A New Entry into Chemical Tuning of Acylation Catalysts.
Authors: Gros Philippe C. , Doudouh Abdelatif , Woltermann Christopher 
Published: October 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Highly Enantioselective Azadiene Diels—Alder Reactions Catalyzed by Chiral N‐Heterocyclic Carbenes.
Authors: He Ming , Struble Justin R. , Bode Jeffrey W. 
Published: October 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
A [3 + 3] Annelation Approach to Tetrahydropyridines.
Authors: Pattenden Lisa C. , Wybrow Robert A. J. , Smith Stephen A. , Harrity Joseph P. A. 
Published: October 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Synthesis, Stereochemistry, and Antimicrobial Activity of 2,6‐Diaryl‐3‐(arylthio)piperidin‐4‐ones.
Authors: Srinivasan Murugesan , Perumal Subbu , Selvaraj Sangavanaicker 
Published: October 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Carbon—Carbon Bond Formation by Radical Cyclization: Regioselective Synthesis of spiro Heterocyclic Compounds by nBu3SnH‐Mediated Reaction.
Authors: Majumdar K. C. , Kundu N. 
Published: October 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
New Synthesis of Isoquinoline and 3,4‐Dihydroisoquinoline Derivatives.
Authors: Kobayashi Kazuhiro , Shiokawa Taiyo , Omote Hiroki , Hashimoto Kenichi , Morikawa Osamu , Konishi Hisatoshi 
Published: October 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Amino Acid Derived Enaminones: A Study in Ring Formation Providing Valuable Asymmetric Synthons.
Authors: Turunen Brandon J. , Georg Gunda I. 
Published: October 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Efficient Synthesis of Fused Bicyclic Glutarimides. Its Application to (.+‐.)‐Alloyohimbane and Louisianin D.
Authors: Chen Hung‐Wei , Hsu Ru‐Ting , Chang Meng‐Yang , Chang Nein‐Chen 
Published: October 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
A New Synthetic Route to Polyalkoxypyrimidines Based on the Reaction of Esters and Methyl Thiocyanate.
Authors: Herrera Antonio , Martinez‐Alvarez Roberto , Ramiro Pedro , Almy John , Molero Dolores , Sanchez Angel 
Published: October 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
A Facile Synthesis of New Tetrahydropyrido[4,3‐d]pyrimidine Derivatives.
Authors: Herrera Antonio , Martinez‐Alvarez Roberto , Chioua Rachid , Almy John 
Published: October 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Convergent One‐Pot Synthesis of 3‐Substituted Quinazolin‐4(3H)‐ones under Solvent‐Free Conditions.
Authors: Rad‐Moghadam Kurosh , Mamghani Manoochehr , Samavi Laleh 
Published: October 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Regioselective Synthesis of Novel 4‐Aryl‐2‐ethylthio‐7‐methyl Pyrazolo[1,5‐a]‐[1,3,5]‐triazines.
Authors: Insuasty Henry , Estrada Martin , Cortes Edward , Quiroga Jairo , Insuasty Braulio , Abonia Rodrigo , Nogueras Manuel , Cobo Justo 
Published: October 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Alkyne Hydrosilylation Catalyzed by Nickel Complexes of N‐Heterocyclic Carbenes.
Authors: Chaulagain Mani Raj , Mahandru Gireesh M. , Montgomery John 
Published: October 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Cobalt‐Mediated Cross‐Coupling Reactions of Primary and Secondary Alkyl Halides with 1‐(Trimethylsilyl)ethenyl‐ and 2‐Trimethylsilylethynylmagnesium Reagents.
Authors: Ohmiya Hirohisa , Yorimitsu Hideki , Oshima Koichiro 
Published: October 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Synthesis of 1,3‐Selenazines and 1,3‐Selenazolidines via Intramolecular Addition of N‐Allylselenoureas.
Authors: Koketsu Mamoru , Kiyokuni Takashi , Sakai Tsutomu , Ando Hiromune , Ishihara Hideharu 
Published: October 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Enantioselective Synthesis of a Phenylalanine Library Containing Alkyl Groups on the Aromatic Moiety: Confirmation of Stereostructure by X‐Ray Analysis.
Authors: Li Tingyou , Tsuda Yuko , Minoura Katsuhiko , In Yasuko , Ishida Toshimasa , Lazarus Lawrence H. , Okada Yoshio 
Published: October 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Total Synthesis of (S)‐(‐)‐Cyclooroidin.
Authors: Patel Jignesh , Pelloux‐Leon Nadia , Minassian Frederic , Vallee Yannick 
Published: October 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Palladium‐Catalyzed Cross‐Coupling and Related Reactions Involving Pyrroles
Authors: Banwell Martin G. , Goodwin Thomas E. , Ng Sarah , Smith Jason A. , Wong David J. 
Published: October 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Cationic Rare Earth Metal Alkyls as Novel Catalysts for Olefin Polymerization and Copolymerization
Authors: Hou Zhaomin , Luo Yunjie , Li Xiaofang 
Published: October 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Macrocyclic Systems with Photoswitchable Functions
Authors: Fedorova O. A. , Ushakov E. N. , Fedorov Y. V. , Strokach Y. P. , Gromov S. P. 
Published: October 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Towards Functional Macrocycles: Self‐Assembly and Template Strategies
Authors: Schalley C. A. , Baytekin H. T. , Baytekin B. 
Published: October 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Medicinal Chemistry of hERG Optimizations: Highlights and Hang‐Ups
Authors: Jamieson Craig , Moir Elizabeth M. , Rankovic Zoran , Wishart Grant 
Published: October 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Targeting EGFR and HER‐2 Receptor Tyrosine Kinases for Cancer Drug Discovery and Development
Authors: Kamath Shantaram , Buolamwini John K. 
Published: October 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Incremental call‐path profiling
Authors: Bernat Andrew R. , Miller Barton P. 
Published: October 2006

AbstractProfiling is a key technique for achieving high performance. Call‐path profiling is a refinement of this technique that classifies a function's behavior based on the path taken to reach the function. This information is particularly useful when optimizing programs that use libraries, such as those for communication (MPI or PVM), linear algebra (ScaLAPACK), or threading. We present a new method for call‐path profiling called incremental call‐path profiling. We profile only a subset of the functions in the program, allowing the use of more complex metrics while lowering the overhead. This combination of call‐path information and complex metrics is particularly useful for localizing bottlenecks in frequently called functions. We also describe the implementation and application of iPath, an incremental call‐path profiler. iPath was used to profile two real‐world applications: the MILC su3_rmd QCD distributed simulation and the Paradyn instrumentation daemon. In both applications we found and removed call‐path‐specific bottlenecks. Our modifications to su3_rmd reduced the running time of the program from 3001 to 1652 s, a 45% decrease. Our modifications to the Paradyn instrumentation daemon greatly increased its efficiency. The time required to instrument our benchmark program was reduced from 296 to 6.4 s, a 98% decrease. Copyright © 2006 John Wiley & Sons, Ltd.
Knowledge engineering for automatic parallel performance diagnosis
Authors: Li L. , Malony A. D. 
Published: October 2006

AbstractScientific parallel programs often undergo significant performance tuning before meeting their performance expectation. Performance tuning naturally involves a diagnostic process—locating performance bugs that make a program inefficient and explaining them in terms of high‐level program design. We present a systematic approach to generating performance knowledge for automatically diagnosing parallel programs. Our approach exploits program semantics and parallelism found in parallel programming patterns to search for and define bugs. The approach addresses how to extract the expert knowledge required for performance diagnosis from parallel patterns and represents this knowledge in a manner such that the diagnostic process can be automated. We demonstrate the effectiveness of our knowledge‐engineering approach through a case study. Our experience diagnosing divide‐and‐conquer programs shows that pattern‐based performance knowledge can provide effective guidance for locating and defining performance bugs at a high level of program abstraction. Copyright © 2006 John Wiley & Sons, Ltd.
Automatic analysis of inefficiency patterns in parallel applications
Authors: Wolf Felix , Mohr Bernd , Dongarra Jack , Moore Shirley 
Published: October 2006

AbstractEvent tracing is a powerful method for analyzing the performance behavior of parallel applications. Because event traces record the temporal and spatial relationships between individual runtime events, they allow application developers to analyze dependences of performance phenomena across concurrent control flows. However, in view of the large amounts of data generated on contemporary parallel machines, the depth and coverage of a purely manual analysis is often limited. Our approach automatically searches event traces for patterns of inefficient behavior, classifies detected instances by category, and quantifies the associated performance penalty. This enables developers to study the performance of their applications at a high level of abstraction, while requiring significantly less time and expertise than a manual analysis. Copyright © 2006 John Wiley & Sons, Ltd.
A distributed adaptive guard channel reservation scheme for cellular networks
Authors: Pati H.K. 
Published: October 2006

AbstractIn this paper, adistributed adaptive guard channel reservation(DAGCR) scheme is proposed to give priority to handoff calls. This scheme is built upon the concept of guard channels and it uses an adaptive algorithm to search automatically the optimal number of guard channels to be reserved at each base station. Thequality‐of‐service(QoS) parameters used are the new and handoff call blockings. Simulation studies are performed to compare the present algorithm with the static guard channel policy. Simulation results show that this proposed algorithm guarantees the handoff call blocking probability to remain below the targeted threshold up to a substantially high offered load with a minimal blocking to new calls up to a moderate offered load and also shows significantly high channel utilization in all offered load conditions. This scheme is examined over a wide range of offered load. Thus, it seems the proposed scheme is very useful in controlling the blocking performances in wireless cellular networks. Copyright © 2006 John Wiley & Sons, Ltd.
Dimerization of Diruthenium Coordination Compounds via Olefin Metathesis
Authors: Chen Wei‐Zhong , Protasiewicz John D. , Shirar Amanda J. , Ren Tong 
Published: October 2006

AbstractDiruthenium compounds containing an ω‐alkene‐α‐carboxylate ligand, Ru2Cl[D(3,5‐Cl2Ph) F]3[O2C(CH2)nCH=CH2] [n = 1 (1a) and 2 (1b)], were prepared from the reactions between Ru2Cl[D(3,5‐Cl2Ph)F]3(O2CCH3) [D(3,5‐Cl2Ph)F = N,N′‐bis(3,5‐dicholorophenyl)formamidinate] and ω‐alkene‐α‐carboxylic acids. Both compounds 1a and 1b undergo olefin cross‐metathesis reactions catalyzed by (Cy3P)2Cl2Ru(=CHPh) to afford the dimerized compounds [Ru2Cl{D(3,5‐Cl2Ph)F}3]2[μ‐O2C(CH2)nCH=CH(CH2)nCO2] [n = 1 (2a) and 2 (2b)]. Molecular structures of compounds 1a/1b and 2a/2b were established by X‐ray diffraction studies, which revealed the formation of trans product only in the case of shorter tether (2a) and a mixture of cis‐/trans isomers in the case of longer tether (2b). (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)
Uncommon 5‐Methoxyisoflavans from Desmodium canum
Authors: de Andrade Lima Cláudia Sampaio , Zappia Giovanni , Delle Monache Giuliano , Botta Bruno 
Published: October 2006

AbstractBioactive minor components of the hexane extract of Desmodium canum root have been assigned the new structures 2–7 of complex isoflavans. Four of them contain the 6‐methyl group typical of the major isoflavanone plant constituents and were named desmodians A–C and 3′‐hydroxydesmodian C, the others being 6‐desmethyldesmodians A and B. All of the isoflavans except 6 (with a 5‐OH group) carry a quite rare 5‐OMe substituent. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)
Model‐Aided Testing of a PEMFC CHP System
Authors: König P. , Weber A. , Lewald N. , Aicher T. , Jörissen L. , Ivers‐Tiffée E. 
Published: October 2006

AbstractBased on system tests, a model‐aided system analysis tool is developed to model different types of fuel cell systems. In the experimental modeling approach, a model system which is general and flexible is parameterized on the basis of data measured from a system. The aim of this model is to obtain information concerning the efficiency of the system and its individual system components, to reveal problems during operation and to analyze the potential for optimization. A first evaluation of the procedure is performed on a 2 kWeland 4 kWthermalPolymer Electrolyte Membrane fuel cell (PEMFC) Combined Heat and Power (CHP) prototype system, installed at the Institut für Werkstoffe der Elektrotechnik (IWE), Universität Karlsruhe (TH). The system, which was developed at the Zentrum für Sonnenenergie‐ und Wasserstoff‐Forschung ZSW, Ulm (FC stack) and the Fraunhofer‐Institut für Solare Energiesysteme ISE, Freiburg (natural gas reformer) is operated and tested in close cooperation with the Stadtwerke Karlsruhe. The CHP system including the measurement equipment, as well as the modeling and simulation approach based on system tests are presented.
On the Efficiency of an Advanced Automotive Fuel Cell System
Authors: Büchi F. N. , Freunberger S. A. , Reum M. , Paganelli G. , Tsukada A. , Dietrich P. , Delfino A. 
Published: October 2006

AbstractEfficiency is the key parameter for the application of fuel cells in automotive applications. The efficiency of a hydrogen/oxygen polymer electrolyte fuel cell system is analyzed and compared to hydrogen/air systems. The analysis is performed for the tank to electric power chain. Furthermore, the additional energy required for using pure oxygen as a second fuel is analyzed and included in the calculation. The results show that if hydrogen is produced from primary fossil energy carriers, such as natural gas and pure oxygen needs to be obtained by a conventional process; the fuel to electric current efficiency is comparable for hydrogen/oxygen and hydrogen/air systems. However, if hydrogen and oxygen are produced by the splitting of water, i.e., by electrolysis or by a thermochemical process, the fuel to electric current efficiency for the hydrogen/oxygen system is clearly superior.