bluuebunny/crossref_metadata_2025 huggingface dataset:
Combinatorial Chemistry in Organic Synthesis
Authors: Takahashi Takashi , Doi Takayuki
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
Pharmacophore Features of Potential Drugs
Authors: Muegge Ingo
Published: May 2010

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Ingredients of the Soup in the Chemist′s Cauldron: Structural Analysis of Organometallics in the Solution by X‐Ray
Authors: Matsubara Seijiro , Oshima Koichiro , Matsubara Eiichiro
Published: May 2010

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Current Trends in QSAR on NO Donors and Inhibitors of Nitric Oxide Synthase (NOS)
Authors: Kontogiorgis Christos A. , Hadjipavlou‐Litina Dimitra
Published: May 2010

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Structure and Bonding in [W10O32]n‐ Isopolyanions
Authors: Bridgeman Adam J. , Cavigliasso German
Published: May 2010

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New Polymolecular Bismuth Monohalides. Synthesis and Crystal Structures of Bi4BrxI4‐x (x = 1, 2, or 3).
Authors: Dikarev E. V. , Popovkin B. A. , Shevelkov A. V.
Published: May 2010

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Ternary Metal Sulfides MzMoS2: Synthesis Using Single‐Layer Dispersions of Molybdenum Disulfide and Study of the Structure.
Authors: Golub A. S. , Zubavichus Ya. V. , Lenenko N. D. , Slovokhotov Yu. L. , Danot M. , Novikov Yu. N.
Published: May 2010

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KNa3In9: A Zintl Network Phase Built of Layered Indium Icosahedra and Zigzag Chains. Synthesis, Structure, Bonding, and Properties.
Authors: Li Bin , Corbett John D.
Published: May 2010

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The Enthalpy of Formation of Cubic Boron Nitride
Authors: Tomaszkiewicz I.
Published: May 2010

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Decomposition of Silver Carbonate; the Crystal Structure of Two High‐Temperature Modifications of Ag2CO3.
Authors: Norby P. , Dinnebier R. , Fitch A. N.
Published: May 2010

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Nanoparticles of Amorphous Ruthenium Sulfide Easily Obtainable from a TiO2‐Supported Hexanuclear Cluster Complex [Ru6C(CO)16]2‐: A Highly Active Catalyst for the Reduction of SO2 with H2.
Authors: Wakatsuki Yasuo , et al. et al.
Published: May 2010

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A New Fluorous/Organic Amphiphilic Ether Solvent, F‐626: Execution of Fluorous and High Temperature Classical Reactions with Convenient Biphase Workup to Separate Product from High Boiling Solvent.
Authors: Matsubara Miroshi , Yasuda Shinji , Sugiyama Hiroyuki , Ryu Ilhyong , Fujii Yasuyuki , Kita Katsumi
Published: May 2010

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Hydrolytic Kinetic Resolution of Terminal Epoxides Catalyzed by Fluorous Chiral Co(salen) Complexes.
Authors: Cavazzini Marco , Quici Silvio , Pozzi Gianluca
Published: May 2010

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Designed Ligands as Probes for the Catalytic Binding Mode in Mo‐Catalyzed Asymmetric Allylic Alkylation.
Authors: Trost Barry M. , Dogra Kalindi , Hachiya Iwao , Emura Takashi , Hughes David L. , Krska Shane , Reamer Robert A. , Palucki Michael , Yasuda Nobuyoshi , Reider Paul J.
Published: May 2010

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Diastereoselective [4 + 2]Cycloaddition of Cyclopentadiene to N‐Tosyliminoacetyl Derivatives of Chiral Secondary Alcohols.
Authors: Szymanski S. , Marzec M. , Jurczak J.
Published: May 2010

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Chiral Enamide. Part 1. Epoxidations of Chiral Enamides. A Viable Approach to Chiral Nitrogen‐Stabilized Oxyallyl Cations in [4 + 3] Cycloadditions.
Authors: Xiong Hui , Hsung Richard P. , Shen Lichun , Hahn Juliet M.
Published: May 2010

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A Mechanistically Designed Cinchona Alkaloid Ligand in the Osmium Catalyzed Asymmetric Dihydroxylation of Alkenes.
Authors: Lohray B. B. , Singh S. K. , Bhushan V.
Published: May 2010

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Sequenced Reactions with Samarium(II) Iodide. Sequential Intramolecular Reformatsky/Nucleophilic Acyl Substitution Reactions for the Synthesis of Medium‐Sized Carbocycles.
Authors: Molander Gary A. , Brown Giles A. , Storch de Gracia Isabel
Published: May 2010

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Palladium and Phase Transfer Catalyzed Heck Cross Coupling Reaction in Water under Microwave Irradiation.
Authors: Wang Jin‐Xian , Liu Zhanxiang , Hu Yulai , Wei Bangguo , Bai Lin
Published: May 2010

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Selenium Catalyzed Oxidations with Aqueous Hydrogen Peroxide. Part 3. Oxidation of Carbonyl Compounds under Mono/Bi/Triphasic Conditions.
Authors: ten Brink Gerd‐Jan , Vis J. Martijn , Arends Isabel W. C. E. , Sheldon Roger A.
Published: May 2010

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Catalytic Aerobic Oxidation of Alcohols by Fe(NO3)3—FeBr3.
Authors: Martin Sandra E. , Suarez Dario F.
Published: May 2010

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New Elements in the Reactivity of α‐Cyclopropyl Vinyl Radicals.
Authors: Mainetti Emily , Fensterbank Louis , Malacria Max
Published: May 2010

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Novel Chemistry of α‐Tosyloxy Ketones: Applications to the Solution‐ and Solid‐Phase Synthesis of Privileged Heterocycle and Enediyne Libraries.
Authors: Nicolaou K. C. , Montagnon T. , Ulven T. , Baran P. S. , Zhong Y.‐L. , Sarabia F.
Published: May 2010

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Radical β‐Elimination of a Sulfinyl Group to Afford Allenes.
Authors: Mouries Virginie , Delouvrie Bendicte , Lacote Emmanuel , Fensterbank Louis , Malacria Max
Published: May 2010

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Coupling of Vinylcyclopropanes with Aldehydes Induced by a TiCl4/n‐Bu4NI Combination: Synthesis of Conjugated Dienols.
Authors: Tsuritani Takayuki , Shinokubo Hiroshi , Oshima Koichiro
Published: May 2010

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Substitution Reactions of Hindered Cyclic Sulfamidates.
Authors: Posakony Jeffrey J. , Tewson Timothy J.
Published: May 2010

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InCl3‐Mediated Reactions of Aldehydes with Allyltrimethylsilane.
Authors: Ghosh Rina , Chakraborty Arijit , De Debasish , Maiti Swaraj B.
Published: May 2010

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An Interesting Synthetic Application of S‐Alkyl (Aryl)bis(alkylsulfanyl)thioacetates: General Procedure for the Preparation of (.+‐.)‐α‐Arylpropionic Acids.
Authors: Clericuzio Marco , Degani Iacopo , Dughera Stefano , Fochi Rita
Published: May 2010

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New Aromatic Pentafluoro‐λ6‐sulfanyl (SF5) Derivatives, m‐SF5(CF2)2C6H4X: (X: N3, Br, OC(O)CH=CH2, CH=CH2).
Authors: Winter R. W. , Winner S. W. , Preston D. A. , Mohtasham J. , Smith J. A. , Gard G. L.
Published: May 2010

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The Effect of Protecting Groups on Thallium(III)‐Promoted Ring Contraction of 3‐Alkenols.
Authors: Ferraz Helena M. C. , Silva Jr. Luiz F.
Published: May 2010

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Oxidative Cyclization—Dimerization Reaction of 2,3‐Allenoic Acids and 1,2‐Allenyl Ketones: An Efficient Synthesis of 4‐(3′‐Furanyl)butenolide Derivatives.
Authors: Ma Shengming , Yu Zhanqian
Published: May 2010

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A New Strategy for the Synthesis of Furan‐3,4‐dicarboxylic Acid
Authors: Deshpande Anil M. , Natu Arvind A. , Argade Narshinha P.
Published: May 2010

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A New, Improved and Convenient Synthesis of 4H‐Cyclopenta[2,1‐b:3,4‐b′]dithiophen‐4‐one.
Authors: Brzezinski Jacek Z. , Reynolds John R.
Published: May 2010

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Interaction of 2,4,6‐Trinitrotoluene and Its Analogues with Aldehydes. Synthesis of Benzoanellated Heterocycles from the Products of Condensation.
Authors: Rozhkov Vladimir V. , Kuvshinov Alexander M. , Shevelev Svyatoslav A.
Published: May 2010

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Design and Synthesis of a Novel Class of Constrained Tricyclic Pyrrolizidinone Carboxylic Acids as Carbapenem Mimics.
Authors: Hanessian Stephen , Buckle Ronald , Bayrakdarian Malken
Published: May 2010

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Synthesis and Antimalarial Activity of Substituted Pyrazole Derivatives.
Authors: Dominguez Jose N. , Charris Jaime E. , Caparelli Mario , Riggione Flavia
Published: May 2010

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Interaction of Diazoimidazoles and Their Diazonium Salts with Primary and Secondary Amines.
Authors: Sadtchikova Elena V. , Mokrushin Vladimir S.
Published: May 2010

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Facile One‐Pot Synthesis of 2‐Aminothiazoles from 1,3‐Diazabuta‐4‐methylthio‐1,3‐dienes.
Authors: Dey Paramita D. , Sharma Arun K. , Jayakumar S. , Mahajan Mohinder P.
Published: May 2010

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Non‐Condensed Trifluoromethylated 5,5‐Bicycles: Synthesis of 2‐[3‐Alkyl(phenyl)‐1H‐pyrazol‐1‐yl]‐4‐phenyl‐5‐alkylthiazole and ‐4,5,6,7‐tetrahydrobenzothiazole Systems.
Authors: Bonacorso Helio Gauze , Wastowski Arci Dirceu , Muniz Mauro Neves , Zanatta Nilo , Martins Marcos Antonio Pinto
Published: May 2010

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Synthesis and Biocidal Activity of 2‐Aryl/Aryloxymethyl‐1,3,4‐oxa/thiadiazolo[4,5‐b][1,2,4]triazolo [5,4‐c]thiazolo‐spiro‐7‐cyclohexanes.
Authors: Nizamuddin Nizamuddin , Alauddin Shafqat , Gupta H. C. , Srivastav Manoj Kumar
Published: May 2010

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A Stereoselective Intramolecular 1,3‐Dipolar Nitrone Cycloaddition for the Synthesis of Substituted Chromans.
Authors: Zhao Qian , Han Fusen , Romero Donna L.
Published: May 2010

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The Application of the Baker—Venkataraman Rearrangement to the Synthesis of Benz[b]indeno[2,1‐e]pyran‐10,11‐dione.
Authors: Thasana Nopporn , Ruchirawat Somsak
Published: May 2010

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Sc(OTf)3‐Catalyzed Synthesis of Pyrano[3,2‐b]‐1‐benzopyrans from D‐Glycals.
Authors: Yadav J. S. , Reddy B. V. S. , Chandraiah L. , Jagannadh B. , Kumar S. Kiran , Kunwar Ajit C.
Published: May 2010

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Catalytic Transformation of Nicotine into Nicotinonitrile — Precursor of Pharmaceutical Substances.
Authors: Kagarlitskii A. D. , Iskakova M. K. , Turmukhambetov A. Zh.
Published: May 2010

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Synthesis of 1‐Azaspiroundecane Ring System via Thorpe—Ziegler Annulation of 2‐Cyano‐2‐(4‐cyano‐tethered) Arylpiperidines.
Authors: Malassene Richard , Toupet Loic , Hurvois Jean‐Pierre , Moinet Claude
Published: May 2010

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Tritylamino Aromatic Heterocycles and Related Carbinols as Blockers of Ca2+‐Activated Potassium Ion Channels Underlying Neuronal Hyperpolarization.
Authors: Zunszain Patricia A. , Shah Mala M. , Miscony Zena , Javadzadeh‐Tabatabaie Mazyar , Haylett Dennis G. , Ganellin C. Robin
Published: May 2010

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Synthesis and Profile of SCH351591, a Novel PDE4 Inhibitor.
Authors: Sabin Verity , et al. et al.
Published: May 2010

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Synthesis of Substituted Isoquinolines by Electrophilic Cyclization of Iminoalkynes.
Authors: Huang Qinhua , Hunter Jack A. , Larock Richard C.
Published: May 2010

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Synthesis and Bioactivities of Novel 4,5,6,7‐Tetrahydrothieno[2,3‐c]pyridines as Inhibitors of Tumor Necrosis Factor‐α (TNF‐α) Production.
Authors: Fujita Masakazu , Seki Taketsugu , Inada Haruaki , Ikeda Naoko
Published: May 2010

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Palladium‐Mediated Total Synthesis of 2‐Styrylbenzoic Acids: A General Route to 2‐Azachrysenes.
Authors: Pampin Carme , Estevez Juan C. , Castedo Luis , Estevez Ramon J.
Published: May 2010

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Regiospecific Synthesis of 3‐Alkyl‐2‐aryl‐4‐trifluoromethylbenzo[h]quinolines by Intramolecular Cyclization of N‐(2‐Alkyl‐1‐aryl‐3‐oxo‐4,4,4‐trifluorobut‐1‐en‐1‐yl)‐1‐naphthylamines.
Authors: Bonacorso Helio Gauze , Duarte Simone Helena Goulart , Zanatta Nilo , Martins Marcos Antonio Pinto
Published: May 2010

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Pyridazines. Part 28. 5‐Alkylidene‐6‐phenyl‐3(2H)‐pyridazinones, a New Family of Platelet Aggregation Inhibitors.
Authors: Sotelo Eddy , Fraiz Nuria , Yanez Matilde , Laguna Reyes , Cano Ernesto , Brea Jose , Ravina Enrique
Published: May 2010

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Pyrazolo[3,4‐d]pyrimidines Containing an Extended 3‐Substituent as Potent Inhibitors of Lck — A Selectivity Insight.
Authors: Burchat Andrew F. , Calderwood David J. , Friedman Michael M. , Hirst Gavin C. , Li Biqin , Rafferty Paul , Ritter Kurt , Skinner Barbara S.
Published: May 2010

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Synthesis and Activity of Phenyl Derivatives Containing 5,6‐Dimethylthieno[2,3‐d]pyrimidin‐4(1H)‐one or 4H‐Pyrimido[5,4‐b]indol‐4‐one Heterocyclic System as Potential Nonsteroidal Antiinflammatory Drugs.
Authors: Santagati Andrea , Granata Giuseppe , Santagati Maria , Cutuli Vincenza , Mangano Nunzio Guido , Caruso Antonina
Published: May 2010

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Unusual Oxidation of 4‐Amino‐4H,8H‐bisfurazano[3,4‐b:3′,4′‐e]pyrazines.
Authors: Sheremetev Aleksei B. , Yudin Igor L.
Published: May 2010

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New 3‐[4‐(Aryl)piperazin‐1‐yl]‐1‐(benzo[b]thiophen‐2‐yl)propane Derivatives with Dual Action at 5‐HT1A Serotonin Receptors and Serotonin Transporter as a New Class of Antidepressants
Authors: Orus L. , Sainz Y. , Perez S. , Oficialdegui A. M. , Martinez J. , Lasheras B. , Del Rio J. , Monge A.
Published: May 2010

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Synthesis of Novel Furo, Thieno, and Benzazetoazepines and Evaluation of Their Cytotoxicity.
Authors: Martinez L. Roberto , Avila Zarraga Jose Gustavo , Duran M. Esther , Ramirez Apam M. Teresa , Canas Roberto
Published: May 2010

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A Facile Synthesis of the Neutral [1,2,4]Triazolo[3,2‐d][1,5]benzoxazepines and Their Chalcogen‐Analogues.
Authors: Wang Quanrui , Liu Xianjun , Li Feng , Ding Zongbiao , Tao Fenggang
Published: May 2010

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Synthesis of β‐Organotelluro Vinylphosphine Oxides by Hydrotelluration of 1‐Alkynylphosphine Oxides and Their Palladium‐Catalyzed Cross‐Coupling with Alkynes.
Authors: Braga Antonio L. , Vargas Fabricio , Zeni Gilson , Silveira Claudio C. , de Andrade Leandro H.
Published: May 2010

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A Convenient and Efficient Synthesis of Novel 1‐Ethoxycarbonylmethyl‐3‐ethyl‐1,2,3,4‐tetrahydro‐4‐oxo‐1,3,2‐benzodiaza phosphorin‐2‐carboxamide 2‐Oxides.
Authors: Huang Jun‐Min , Chen Hui , Chen Ru‐Yu
Published: May 2010

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Palladium‐Catalyzed Asymmetric Allylation and Complex Formation Involving P,N‐Bidentate Derivatives of (S)‐2‐(Anilinomethyl)pyrrolidine.
Authors: Bondarev O. G. , Gavrilov K. N. , Tsarev V. N. , Davankov V. A. , Lebedev R. V. , Moiseev S. K. , Kalinin V. N.
Published: May 2010

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A Convenient Preparation of 1,2,3,4,5,6,7,8‐Octahydronaphthalene Skeleton. Synthesis of (.+‐.)‐Isocaridiene.
Authors: Imamura Paulo M. , Costa Marta , Custodio Rogerio
Published: May 2010

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A General Asymmetric Synthesis of syn‐ and anti‐β‐Substituted Cysteine and Serine Derivatives.
Authors: Xiong Chiyi , Wang Wei , Hruby Victor J.
Published: May 2010

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Inhibition of Glutathione S‐Transferase in Rat Hepatocytes by a Glycine‐Tetrazole Modified S‐Alkyl—GSH Analogue.
Authors: Burg Danny , Hameetman Liesbeth , Filippov Dmitri V. , van der Marel Gijs A. , Mulder Gerard J.
Published: May 2010

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Synthesis, Antiinflammatory and Analgesic Activity of Amides of Naproxene with Amino Acid Derivatives.
Authors: Levit G. L. , Anikina L. V. , Vikharev Yu. B. , Demin A. M. , Safin V. A. , Matveeva T. V. , Krasnov V. P.
Published: May 2010

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Synthesis of Enantiopure 3‐Azabicyclo[3.3.0]octen‐7‐one Derivatives via Intramolecular Pauson—Khand Cycloaddition Reaction Using Tri‐O‐acetyl‐D‐glucal as Starting Material.
Authors: Areces Pilar , Duran M. Angeles , Plumet Joaquin , Hursthouse Michael B. , Light Mark E.
Published: May 2010

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Enantioselective Desymmetrization of Meso Bicyclic Hydrazines: A Novel Approach to the Asymmetric Synthesis of Polysubstituted Amino Cyclopentanic Cores.
Authors: Perez Luna A. , Ceschi M.‐A. , Bonin M. , Micouin L. , Husson H.‐P. , Gougeon S. , Estenne‐Bouhtou G. , Marabout B. , Sevrin M. , George P.
Published: May 2010

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Selective 3‐O‐ and/or 6‐O‐Glycosidation of Unprotected O‐ and S‐Glycosides Promoted by an Intramolecularly Coordinated Arylboronic Compound.
Authors: Oshima Kenji , Yamauchi Takeshi , Shimomura Masato , Miyauchi Shinnosuke , Aoyama Yasuhiro
Published: May 2010

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The Total Synthesis of Alkaloids (‐)‐Histrionicotoxin 259A (IIIc), 285C (IIIb) and 285E (IIIa).
Authors: Smith Catherine J. , Holmes Andrew B. , Press Neil J.
Published: May 2010

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Practical Synthesis of Wybutosine, the Hypermodified Nucleoside of Yeast Phenylalanine Transfer Ribonucleic Acid.
Authors: Itaya Taisuke , Kanai Tae , Iida Takehiko
Published: May 2010

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Thiophosphorylation of Biologically Relevant Alcohols by the Oxathiaphospholane Approach.
Authors: Olesiak Magdalena , Krajewska Danuta , Wasilewska Ewa , Korczynski Dariusz , Baraniak Janina , Okruszek Andrzej , Stec Wojciech J.
Published: May 2010

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Toward a Total Synthesis of Okilactomycin (VII). Part 1. A Direct, Enantiocontrolled Route to the Western Sector.
Authors: Paquette Leo A. , Boulet Serge L.
Published: May 2010

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Structural and Bonding Characteristics in Transition Metal—Silane Complexes
Authors: Lin Zhenyang
Published: May 2010

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A Critical Outlook and Comparison of Enantioselective Oxidation Methodologies of Olefins.
Authors: Bonini Carlo , Righi Giuliana
Published: May 2010

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A Genealogy of Pd‐Catalyzed Cross‐Coupling.
Authors: Negishi Ei‐ichi
Published: May 2010

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How I Came Across the Silicon‐Based Cross‐Coupling Reaction.
Authors: Hiyama Tamejiro
Published: May 2010

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Cross‐Coupling Reactions via Organoboranes.
Authors: Suzuki Akira
Published: May 2010

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Pyridylsilyl Group Driven Cross‐Coupling Reactions.
Authors: Itami Kenichiro , Mitsudo Koichi , Nokami Toshiki , Kamei Toshiyuki , Koike Tooru , Yoshida Jun‐ichi
Published: May 2010

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Synthesis of Functionalized Alkenes by Transition Metal Catalyzed Carbostannylations of Alkynes and Dienes Followed by Cross‐Coupling Reactions.
Authors: Shirakawa Eiji , Hiyama Tamejiro
Published: May 2010

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Cross‐Coupling Reactions for Preparation of π‐Conjugated Polymers.
Authors: Yamamoto Takakazu
Published: May 2010

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Palladium‐Catalyzed C—N and C—C Cross‐Couplings as Versatile, New Avenues for Modifications of Purine 2′‐Deoxynucleosides.
Authors: Lakshman Mahesh K.
Published: May 2010

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The Intramolecular Stille Reaction in Some Target Natural Product Syntheses.
Authors: Pattenden Gerald , Sinclair David J.
Published: May 2010

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Near‐Infrared Diode Laser Spectroscopy in Chemical Process and Environmental Air Monitoring
Authors: Martin Philip A.
Published: May 2010

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Synthesis of 3‐Substituted 5‐Arylidene‐1‐methyl‐2‐thiohydantoins under Microwave Irradiation.
Authors: Khodair Ahmed I. , Nielsen John
Published: May 2010

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Indium‐Mediated Atom‐Transfer Cyclizations and Reductive Cyclizations.
Authors: Yanada Reiko , Nishimori Nobuaki , Matsumura Akira , Fuji Nobutaka , Takemoto Yoshiji
Published: May 2010

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A Convenient General Synthesis of 3‐Substituted 2H‐Chromene Derivatives.
Authors: Kaye Perry T. , Nocanda Xolani W.
Published: May 2010

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One‐Step Dimerization of Linear Furanocoumarins.
Authors: Koul Summon , Razdan T. K. , Andotra C. S. , Kalla A. K. , Koul S. , Taneja S. C.
Published: May 2010

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A Convenient Method for the Synthesis of 1,8‐Bis(pyridin‐3‐oxy)oct‐4‐ene‐2,6‐diyne.
Authors: Rawat Diwan S. , Zaleski Jeffrey M.
Published: May 2010

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LPDE‐Catalyzed Intramolecular Cyclization of Arylimines: A Facile Synthesis of Tetrahydrochromanoquinolines.
Authors: Yadav J. S. , Reddy B. V. Subba , Rao C. Venkateswara , Srinivas R.
Published: May 2010

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A New Entry to Asymmetric Synthesis of 1‐Substituted 1,2,3,4‐Tetrahydro‐β‐carbolines Employing a Pyroglutamic Acid Derivative as a Chiral Auxiliary.
Authors: Itoh Takashi , Nagata Kazuhiro , Yokoya Masashi , Miyazaki Michiko , Ikeda Sachiko , Matsuya Yuji , Enomoto Yasuko , Ohsawa Akio
Published: May 2010

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Quinolizine‐2,4‐diones by Reversible Dimerization of 2‐Pyridylketenes.
Authors: Plueg Carsten , Kuhn Arvid , Wentrup Curt
Published: May 2010

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Synthesis of Polyfluorodibenz[b,f][1,4]oxazepines by the Cyclization of 2‐[(Polyfluorobenzylidene)amino]phenols.
Authors: Allaway Cara L. , Daly Martina , Nieuwenhuyzen Mark , Saunders Graham C.
Published: May 2010

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Synthesis of Optically Pure Diaza‐12‐crown‐4 with a Pendant Group.
Authors: Lee Chi‐Wan
Published: May 2010

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Synthesis of (.+‐.) Ethyl 2,2‐Bis(diethoxyphosphoryl)cyclopropane Carboxylates.
Authors: Guervenou Joel , Couthon‐Gourves Helene , Gourves Jean‐Philippe , Corbel Bernard
Published: May 2010

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Reactions of Tautomeric Quaternary Phosphonium Salts Based on Triphenylphosphine and 3‐Phenylpropargyl Bromide with Nitrogen Nucleophiles.
Authors: Khachatrian R. A. , Zalinian S. A. , Bagdasarian G. B. , Sarkisova E. A. , Injikian M. G.
Published: May 2010

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Synthesis and Structures of Nitroxyalkyl Methylphosphonates.
Authors: Eremenko L. T. , Oreshko G. V. , Nesterenko D. A. , Lagodzinskaya G. V. , Eremenko I. L.
Published: May 2010

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Reinvestigation of Reaction of (2‐Ethoxyvinyl)stannanes with Acetyl Bromide.
Authors: Lebl Tomas , Holecek Jaroslav , Dymak Marek , Steinborn Dirk
Published: May 2010

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Room Temperature Molten Fluorometalates: 1‐Ethyl‐3‐methylimidazolium Hexafluoroniobate(V) and Hexafluorotantalate(V).
Authors: Matsumoto Kazuhiko , Hagiwara Rika , Ito Yasuhiko
Published: May 2010

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Studies on the Constituents of Mushrooms. Part 16. New Sterols from Two Edible Mushrooms, Pleurotus eryngii and Panellus serotinus
Authors: Yaoita Yasunori , Yoshihara Yuko , Kakuda Rie , Machida Koichi , Kikuchi Masao
Published: May 2010

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N‐(Pyrimidin‐4‐yl) and N‐(Pyridin‐2‐yl) Phenylalanine Derivatives as VLA‐4 Integrin Antagonists.
Authors: Porter John R. , et al. et al.
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
Syntheses of Depsipeptide Analogues of the Insect Neuropeptide Proctolin.
Authors: Scherkenbeck Juergen , Plant Andrew , Stieber Frank , Loesel Peter , Dyker Hubert
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
Total Synthesis of (‐)‐Stevastelin B.
Authors: Kurosawa Kazuo , Nagase Toshihiko , Chida Noritaka
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
Glycal‐Mediated Syntheses of Enantiomerically Pure Polyhydroxylated γ‐ and δ‐Lactams.
Authors: Squarcia Antonella , Vivolo Fabrizio , Weinig Hans‐Georg , Passacantilli Pietro , Piancatelli Giovanni
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
Synthesis of Alkaloid 223A and a Structural Revision.
Authors: Toyooka Naoki , Fukutome Ayako , Nemoto Hideo , Daly John W. , Spande Thomas F. , Garraffo H. Martin , Kaneko Tetsuo
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
A Novel Synthetic Approach to Isoindolobenzazepine Alkaloid, Chilenine, Employing SmI2‐Mediated Pinacolic Coupling Reaction.
Authors: Yoda Hidemi , Nakahama Akira , Koketsu Tomomi , Takabe Kunihiko
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
Facile Pd‐Catalyzed Cross‐Coupling of 2′‐Deoxyguanosine O6‐Arylsulfonates with Arylboronic Acids.
Authors: Lakshman Mahesh K. , Thomson Paul F. , Nugui Mark A. , Hilmer John H. , Sevova Nonka , Boggess Bill
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
An Improved Synthesis of 5′‐Amino‐5′‐deoxyguanosine.
Authors: Dean David K.
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
Photolabile Groups for Exocyclic Amino and O6/N‐1 Lactam Protection in Oligonucleotide Synthesis.
Authors: Misra Arvind , Tripathi Snehlata , Misra Krishna
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
Enzyme Inhibitory Constituents from Duranta repens
Authors: Anis Itrat , Ahmed Saeed , Malik Abdul , Yasin Amsha , Choudary M. Iqbal
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
A New Hydroxyapatite/Glass Biphasic Material: In Vitro Bioactivity.
Authors: Ramila A. , Padilla S. , Munoz B. , Vallet‐Regi M.
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
Design, Synthesis, and SAR of Monobenzamidines and Aminoisoquinolines as Factor Xa Inhibitors.
Authors: Zhang Penglie , Zhu Bing‐Yan , et al. et al.
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
Ordered Porous Materials for Emerging Applications
Authors: Davis Mark E.
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
Synthesis of the Cryptophycins
Authors: Tius Marcus A.
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
Asymmetric Hydrogenations (Nobel Lecture)
Authors: Knowles William S.
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
Asymmetric Catalysis: Science and Opportunities (Nobel Lecture)
Authors: Noyori Ryoji
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
Alkaloids of Physostigma venenosum. Part 12. Syntheses of (‐)‐Physostigmine, with Particular Emphasis upon the Clarification of Two Enigmatic Early Synthetic Approaches
Authors: Robinson Brian
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
Synthesis of Highly Reactive Organosulfur Compounds.
Authors: Okazaki Renji , Goto Kei
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
Microwave Radiation in Analytical Chemistry: The Scope and Prospects for Application
Authors: Kubrakova I. V .
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
An MBER–BLAST algorithm for OFDM–SDMA communication using particle swarm optimization
Authors: ur Rehman Habib , Shah Syed Ismail , Zaka Imran , Ahmad Jamil
Published: May 2010

A multiple antenna‐aided, minimum bit error rate–Bell Laboratories‐layered space–time (MBER–BLAST) multiuser detection algorithm is proposed for uplink orthogonal frequency division multiplexing–space division multiple access (OFDM–SDMA) communication to increase the capacity of the system. The proposed algorithm overcomes the limitations of the conventional detectors when the number of users exceed the number of receiver antennas. A particle swarm optimization (PSO) algorithm is employed for finding the optimum weight vectors for MBER detector. PSO is well suited for physically realizable, real‐time applications, where low complexity and fast convergence are of absolute importance, while an optimum maximum likelihood (ML) detection using an exhaustive search method is prohibitively complex. The proposed algorithm outperforms the MBER detector and is capable of achieving performance close to that attained by ML detector at a significantly lower complexity, especially under high user loads. Simulation results show that MBER–BLAST detector promises substantially improved performance compared with the existing systems and offers a good performance–complexity trade‐off. It supports a large number of users by exploiting the capacity advantages of multiple antenna systems in rich scattering environments. Copyright © 2010 John Wiley & Sons, Ltd.
SEP calculations for coherentM‐ary FSK in different fading channels with MRC diversity
Authors: Chandra Aniruddha , Poram Srinivasa Rao , Bose Chayanika
Published: May 2010

In this paper, the authors derive symbol error probability (SEP) expressions for coherentM‐ary frequency shift keying (MFSK) modulation schemes in multipath fading channels. The multipath or small‐scale fading process is assumed to be slow and frequency non‐selective. In addition, the channel is also subjected to the usual degradation caused by the additive white Gaussian noise (AWGN). Different small‐scale fading statistics such as Rayleigh, Rician (Nakagami‐n), Hoyt (Nakagami‐q), and Nakagami‐mhave been considered to portray diverse wireless environments. Further, to mitigate fading effects through space diversity, the receiver front‐end is assumed to be equipped with multiple antennas. Independent and identically distributed (IID) as well as uncorrelated signal replicas received through all these antennas are combined with a linear combiner before successive demodulation. As the detection is coherent in nature and thus involves phase estimation, optimum phase‐coherent combining algorithms, such as predetection maximal ratio combining (MRC), may be used without any added complexity to the receiver. In the current text, utilizing the alternate expressions for integer powers (1≤n≤4) of GaussianQfunction, SEP values of coherent MFSK are obtained through moment generating function (MGF) approach for all the fading models (with or without MRC diversity) described above. The derived end expressions are composed of finite range integrals, which can be numerically computed with ease, dispenses with the need of individual expressions for differentM, and gives exact values up toM=5. When the constellation size becomes bigger (M≥6), the same SEP expressions provide a quite realistic approximation, much tighter than the bounds found in previous literatures. Error probabilities are graphically displayed for each fading model with different values of constellation sizeM, diversity orderL, and for corresponding fading parameters (K,q, orm). To validate the proposed approximation method extensive Monte‐Carlo simulations were also performed, which show a close match with the analytical results deduced in the paper. Both these theoretical and simulation results offer valuable insight to assess the efficacy of relatively less studied coherent MFSK in the context of the optimum modulation choice in wireless communication. Copyright © 2010 John Wiley & Sons, Ltd.
Fluid–structure interaction modeling and performance analysis of the Orion spacecraft parachutes
Authors: Takizawa Kenji , Moorman Creighton , Wright Samuel , Spielman Timothy , Tezduyar Tayfun E.
Published: May 2010

We focus on fluid–structure interaction (FSI) modeling and performance analysis of the ringsail parachutes to be used with the Orion spacecraft. We address the computational challenges with the latest techniques developed by the T★AFSM (Team for Advanced Flow Simulation and Modeling) in conjunction with the SSTFSI (Stabilized Space–Time Fluid–Structure Interaction) technique. The challenges involved in FSI modeling include the geometric porosity of the ringsail parachutes with ring gaps and sail slits. We investigate the performance of three possible design configurations of the parachute canopy. We also describe the techniques developed recently for building a consistent starting condition for the FSI computations, discuss rotational periodicity techniques for improving the geometric‐porosity modeling, and introduce a new version of the HMGP (Homogenized Modeling of Geometric Porosity). Copyright © 2010 John Wiley & Sons, Ltd.
Unsteady CFD computations using vertex‐centered finite volumes for unstructured grids on Graphics Processing Units
Authors: Asouti V. G. , Trompoukis X. S. , Kampolis I. C. , Giannakoglou K. C.
Published: May 2010

This paper presents a Navier–Stokes solver for steady and unsteady turbulent flows on unstructured/hybrid grids, with triangular and quadrilateral elements, which was implemented to run on Graphics Processing Units (GPUs). The paper focuses on programming issues for efficiently porting the CPU code to the GPU, using the CUDA language. Compared with cell‐centered schemes, the use of a vertex‐centered finite volume scheme on unstructured grids increases the programming complexity since the number of nodes connected by edge to any other node might vary a lot. Thus, delicate GPU memory handling is absolutely necessary in order to maximize the speed‐up of the GPU implementation with respect to the Fortran code running on a single CPU core. The developed GPU‐enabled code is used to numerically study steady and unsteady flows around the supercritical airfoil OAT15A, by laying emphasis on the transonic buffet phenomenon. The computations were carried out on NVIDIA's Ge‐Force GTX 285 graphics cards and speed‐ups up to ∼46 × (on a single GPU, with double precision arithmetic) are reported. Copyright © 2010 John Wiley & Sons, Ltd.
The estimation of functional uncertainty using polynomial chaos and adjoint equations
Authors: Alekseev A. K. , Navon I. M. , Zelentsov M. E.
Published: May 2010

The combined use of nonintrusive polynomial chaos (PC) and adjoint equations (yielding the gradient) is addressed aimed at the estimation of uncertainty of a valuable functional subject to large errors in the input data. Random variables providing maximum impact on the result (leading values) may be found using the gradient information that allows reduction of the problem dimension. The gradient may be also used for the calculation of PC coefficients, thus enabling further acceleration of the computations. Copyright © 2010 John Wiley & Sons, Ltd.
Tight and efficient enclosure of matrix multiplication by using optimized BLAS
Authors: Ozaki Katsuhisa , Ogita Takeshi , Oishi Shin'ichi
Published: May 2010

This paper is concerned with the tight enclosure of matrix multiplication AB for two floating‐point matrices A and B. The aim of this paper is to compute component‐wise upper and lower bounds of the exact result C of the matrix multiplication AB by floating‐point arithmetic. Namely, an interval matrix enclosing C is obtained. In this paper, new algorithms for enclosing C are proposed. The proposed algorithms are designed to mainly exploit the level 3 operations in BLAS. Although the proposed algorithms take around twice as much costs as a standard algorithm promoted by Oishi and Rump, the accuracy of the result by the proposed algorithms is better than that of the standard algorithm. At the end of this paper, we present numerical examples showing the efficiency of the proposed algorithms. Copyright © 2010 John Wiley & Sons, Ltd.
Surface analytical characterization of micro‐fluidic devices hot embossed in polymer wafers: Surface chemistry and wettability
Authors: Baytekin H. T. , Wirth Thomas , Gross Thomas , Sahre Mario , Unger Wolfgang E. S. , Theisen Janko , Schmidt Martin
Published: May 2010

Recently, time‐of‐flight secondary ion mass spectrometry (ToF‐SIMS) and X‐ray photoelectron spectroscopy (XPS) instrumentation has been used to address areas of interest within micro‐fluidic devices providing full access to the surface chemistry established at the bottom of micro‐channels therein. After careful calibration, information on surface chemistry as obtained by ToF‐SIMS or XPS can be interpreted in terms of wettability expressed as contact angles which are then characteristic for the inner walls of micro‐channels. Standard contact angle measurement is not applicable in micro‐channels. The approach has been demonstrated to be successful with two different micro‐fluidic devices hot embossed into high‐end quality poly(methyl methacrylate) (PMMA) or Polycarbonate wafers. A pre‐selected surface chemistry at micro‐channel walls can be established by plasma technologies but ageing and rinsing effects have to be under control. A combination of ToF‐SIMS, XPS and contact angle measurement techniques has been demonstrated to provide the required information. Finally, it is shown by ToF‐SIMS and XPS analysis that in the production of micro‐fluidic parts during practical processing using hot embossing technologies, material originating from cover foils will reside on the polymer wafer's surface. Moreover, residues of releasing agents as silicone oil used during processing can be detected by ToF‐SIMS. Both cover foil residues and silicones are issues of trouble shooting in micro‐fluidics because they will change contact angles efficiently. Copyright © 2010 John Wiley & Sons, Ltd.
Effect of SiC coating on interfacial reaction between carbon short fiber and Al melt
Authors: Kim Il‐Ho , Lee Wonsik , Lee C.‐W. , Ko Se‐Hyun , Jang Jin‐Man
Published: May 2010

This study aims to investigate the effects of SiC coating on the degradation of carbon short fiber in Al melt. The SiC coating on the surface of carbon short fiber is performed at 1500 °C in Ar atmosphere by carbothermal reduction method after precoating with silica sol on the surface of carbon short fibers. The SiC coating layer is successfully formed with a mean thickness of 160 nm. The pure carbon short fibers without SiC coating was degraded rapidly in Al melt. After maintenance for 180 min in Al melt of 800 °C, carbon fibers did not remain. On the other hand, the carbon short fibers with SiC coating layer maintained the shape of initial carbon fiber up to 180 min in Al melt. However, with increase of reaction time in Al melt, SiC coating layer gradually dissolved and after 180 min, the coating layer was not observed in some areas on the surface of fiber. Also, concentration of Al in carbon fiber increased with the maintenance time in Al melt. As a consequence, SiC coating layer can retard effectively degradation of the carbon short fibers, even though it is only a few hundred nanometers thick. Copyright © 2010 John Wiley & Sons, Ltd.
Investigating the fundamentals of molecular depth profiling using strong‐field photoionization of sputtered neutrals
Authors: Willingham D. , Brenes D. A. , Winograd N. , Wucher A.
Published: May 2010

Molecular depth profiling of model organic thin films were performed using a 40 keV C60+ cluster ion source in concert with TOF‐SIMS. Strong‐field photoionization of intact neutral molecules sputtered by 40 keV C60+ primary ions was used to analyze changes in the chemical environment of the guanine thin films as a function of ion fluence. Direct comparison of the secondary ion and neutral components of the molecular depth profiles yields valuable information about chemical damage accumulation as well as changes in the molecular ionization probability. An analytical protocol based on the erosion dynamics model is developed and evaluated using guanine and trehalose molecular secondary ion signals with and without comparable laser photoionization data. Copyright © 2010 John Wiley & Sons, Ltd.
The influence of beam energy on apparent layer thickness using ultralow energy O2+ SIMS on surface Si1−xGex
Authors: Dowsett M. G. , Morris R. J. H. , Hand M. , Grigg A. T. , Walker D. , Beanland R.
Published: May 2010

A technique that employs energy sequencing, i.e. depth profiling a sample for a range of beam energies and then extrapolating the profile shape to zero beam energy, has been proposed as a means for removing the effects of atomic mixing and surface transient behavior. Here we have tested this approach in an attempt to establish the accurate thickness of a superficial (∼30 nm) Si1−xGex (x ∼ 0.3) layer. The conditions used were near‐normal incidence O2+ and the energy range 0.25–2.5 keV. Energy‐dependent apparent layer thicknesses were extracted for numerous points (90, 85, 75, 50, 21 and 10%) across the decaying Ge signal between the SiGe and underlying Si. A monotonic increase in apparent layer thickness was found as the energy was reduced across the range 2.5–0.4 keV. However, for beam energies < 0.4 keV, the apparent layer thickness was found to decrease suggesting that an increase in the relative surface‐to‐bulk erosion rate had outweighed any decrease in the true width of the transient region. This effect may be inescapable or caused by a nanometre‐scale Ge rich layer at the surface. The behavior found here shows that the ‘zero beam energy’ profile shape is not necessarily closest to the truth. Copyright © 2010 John Wiley & Sons, Ltd.
The Storing Matter technique: application to polymer samples using Ag collectors
Authors: Becker N. , Wirtz T. , Migeon H.‐N.
Published: May 2010

The Storing Matter technique has been developed to perform quantitative surface analysis with high sensitivity. This technique consists in decoupling the sputtering of the specimen from the subsequent analysis step. In the recently developed prototype instrument, the sample surface is sputtered by an ion beam and the emitted particles are deposited at submonolayer level on a dedicated collector under UHV conditions. In a second step, the matter deposited on the collector is analyzed by SIMS in dynamic or static mode. The chemical nature of the collector surface is chosen with regard to the subsequent SIMS analysis (high or low work function to enhance positive or negative ionization, metallic overlayer for optimized organic information by cationization, etc.) by depositing thin films by electron beam evaporation.

This paper presents the first results obtained on polymer samples (PMMA, PVC and PS) with the Storing Matter prototype instrument. The chosen collector surface was Ag, which is known to enhance cationization in static SIMS. The positive mass spectra obtained from Storing Matter deposits on Ag collectors were compared to those recorded on polymer reference samples and on the pristine Ag collectors. This study showed that the Storing Matter technique allows for a clear identification of the PMMA and PVC deposits while enhancing the secondary ion intensities in the higher‐mass range with respect to a conventional static SIMS analysis of the polymer. Copyright © 2010 John Wiley & Sons, Ltd.
Ionization effects in molecular depth profiling of trehalose films using buckminsterfullerene (C60) cluster ions
Authors: Lu C. , Wucher A. , Winograd N.
Published: May 2010

Salts play a mysterious role in desorption mass spectrometry, especially in biological samples.1 We used trehalose films doped with a peptide as a well defined model system to investigate the ionization effects in organic molecular depth profiling. Sodium salts at 1% level were added into the solution used to produce the trehalose films, and depth profiles were obtained with a C60 ion source. The results show that the protonated molecular ion signal from the peptide and the quasimolecular ion signal of trehalose are significantly suppressed by the addition of salts, whereas the signals representing salt clusters and salt adducts of trehalose are formed in both positive and negative modes. The formation of protonated molecular ions is found to correlate with the ratio between protonated and bare water ions, suggesting that the latter can be used as an indicator for the accumulation of protons liberated by the ion bombardment. In experiments where no salt was added, it is shown that the surface variation of the protonated molecular ion signal strongly depends upon the water content of the trehalose film. Copyright © 2010 John Wiley & Sons, Ltd.
From FIB‐SIMS to SIMS‐FIB. The prospects for a 10 nm lateral resolution SIMS instrument with full FIB functionality
Authors: McPhail David S. , Li Libing , Chater Richard J. , Yakovlev Nikolai , Seng Hweeleng
Published: May 2010

The FEI FIB (200) SIMS instrument is described herein, and its modes of operation outlined. The issues involved in achieving high lateral resolution analysis with good sensitivity are presented, and some examples of applications in materials science discussed. The possibility of a manufacturer developing a dedicated SIMS‐FIB instrument, i.e. a 10 nm lateral resolution SIMS instrument incorporating an FIB gun and FIB SIMS functionality (analysis, milling and channeling contrast) is explored. Copyright © 2010 John Wiley & Sons, Ltd.
Insight into the swelling mechanism involved in the recovery of serial numbers erased from polymer surfaces
Authors: Conlan Xavier A. , Baker Matthew J. , Krieg Richard , Lockyer Nicholas P. , Vickerman John C. , Barnett Neil W. , Lim Kieran F.
Published: May 2010

Imaging SIMS is used to investigate the recovery of erased serial numbers from polypropylene, polycarbonate and polyvinylchloride substrates. The recovery of the serial numbers is initiated by a swelling mechanism due to the application of two swelling agents: methyleugenol and cinnamaldehyde. The localization of the characteristic molecular ions for the swelling agents is observed in regions associated with erased characters. This study examines and evaluates SIMS images to discover the optimum combination of the polymer and solvents. The results are discussed in reference to the Hildebrand solubility parameter and comments upon the limitations of this suggested indicator. Copyright © 2010 John Wiley & Sons, Ltd.