bluuebunny/crossref_metadata_2025 huggingface dataset:
Synthesis and Characterization of Two New Photochromic Organic—Inorganic Hybrid Materials Based on Isopolyoxomolybdate: (HDBU)3(NH4) [β‐Mo8O26]×H2O and (HDBU)4[δ‐Mo8O26].
Authors: Coue Violaine , Dessapt Remi , Bujoli‐Doeuff Martine , Evain Michel , Jobic Stephane
Published: February 2007

ChemInform 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.
Chalcone Epoxide Intermediates in the Syntheses of Lignin‐Related Phenylcoumarans
Authors: Langer Vratislav , Li Shiming , Lundquist Knut
Published: February 2007

ChemInform 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 Construction of a Chiral Spirocyclic Structure by the [2 + 2 + 2] Cycloaddition of Diynes and exo‐Methylene Cyclic Compounds.
Authors: Tsuchikama Kyoji , Kuwata Yusuke , Shibata Takanori
Published: February 2007

ChemInform 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.
Isopropylidenemalononitrile in the Synthesis of 2‐Amino‐4,6,6‐trimethylcyclohexa‐2,4‐diene‐1,1,3‐tricarbonitrile (IX), 6‐Amino‐2‐ (4‐methoxybenzoylmethylsulfanyl) ‐4,4‐dimethyl‐1,4‐dihydropyridine‐3,5‐dicarbonitrile (IV), and Fused 2‐Aminopyrans (VI), (VIII) According to Michael.
Authors: Dyachenko V. D. , Rusanov E. B.
Published: February 2007

ChemInform 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.
Radical Additions of Aryl Iodides to Arenes Are Facilitated by Oxidative Rearomatization with Dioxygen.
Authors: Curran Dennis P. , Keller Adam I.
Published: February 2007

ChemInform 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 Cyanocarbonation of Ketones with Chiral Base.
Authors: Tian Shi‐Kai , Deng Li
Published: February 2007

ChemInform 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.
Intermolecular Oxidative Enolate Heterocoupling.
Authors: Baran Phil S. , DeMartino Michael P.
Published: February 2007

ChemInform 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.
One‐Pot Wittig Reactions in Aqueous Media: A Rapid and Environmentally Benign Synthesis of α,β‐Unsaturated Carboxylic Esters and Nitriles.
Authors: Wu Jinlong , Yue Congyong
Published: February 2007

ChemInform 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.
Useful Reactions of Silylated Propargyltungsten or Propargylmolybdenum Species.
Authors: Asakura Toshimichi , Kojima Takuto , Miura Tomoya , Iwasawa Nobuharu
Published: February 2007

ChemInform 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.
Lanthanoid Triflate Catalyzed Preparation of β,β‐Difluorohomopropargyl Alcohols in Aqueous Media. Application to the Synthesis of 4,4‐Difluoroisochromans.
Authors: Arimitsu Satoru , Hammond Gerald B.
Published: February 2007

ChemInform 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 Regiospecific Aminocarbonylation of Alkynes in the Ionic Liquid [bmim][Tf2N].
Authors: Li Yu , Alper Howard , Yu Zhengkun
Published: February 2007

ChemInform 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 Rearrangement to a Zirconium—Alkenylidene in the Insertion of Dihalocarbenoids and Acetylides into Zirconacycles.
Authors: Thomas Emma , Dixon Sally , Whitby Richard J.
Published: February 2007

ChemInform 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.
Strained Silacycle Catalyzed Asymmetric Diels—Alder Cycloadditions: The First Highly Enantioselective Silicon Lewis Acid Catalyst (I).
Authors: Kubota Katsumi , Hamblett Christopher L. , Wang Xiaolun , Leighton James L.
Published: February 2007

ChemInform 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.
[emim]BF4‐Promoted Chloromethylation of Aromatic Hydrocarbons.
Authors: Wang Yun , Shang Zhi‐Cai , Wu Tian‐Xing
Published: February 2007

ChemInform 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.
2‐Iodylphenol Ethers: Preparation, X‐Ray Crystal Structure, and Reactivity of New Hypervalent Iodine(V) Oxidizing Reagents.
Authors: Koposov Alexey Y. , Karimov Rashad R. , Geraskin Ivan M. , Nemykin Victor N. , Zhdankin Viktor V.
Published: February 2007

ChemInform 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.
Direct and Efficient One‐Pot Preparation of Ketones from Aldehydes Using N‐tert‐Butylphenylsulfinimidoyl Chloride.
Authors: Crawford James J. , Henderson Kenneth W. , Kerr William J.
Published: February 2007

ChemInform 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.
Hydrogen Bonding Makes a Difference in the Rhodium‐Catalyzed Enantioselective Hydrogenation Using Monodentate Phosphoramidites.
Authors: Liu Yan , Sandoval Christian A. , Yamaguchi Yoshiki , Zhang Xue , Wang Zheng , Kato Koichi , Ding Kuiling
Published: February 2007

ChemInform 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 α‐Arylation of Methyl Isobutyrate and Isobutyronitrile: An Efficient Synthesis of 2,5‐Disubstituted Benzyl Alcohol and Amine Intermediates.
Authors: Shetty Rupa , Moffett Kristofer K.
Published: February 2007

ChemInform 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.
Dibromoborane‐dimethyl Sulfide: A New, Mild, Chemoselective Reagent for the Rapid Deoxygenation of Sulfoxides to Sulfides.
Authors: Roy Chandra D. , Brown Herbert C.
Published: February 2007

ChemInform 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‐Alkylamino‐5‐hydroxy‐5‐phenyl‐2,3,4‐tribenzoylcyclopenta‐1,3‐dienes in the THF/H2O System.
Authors: Yavari Issa , Nasiri Farough
Published: February 2007

ChemInform 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.
Rhodium N‐Confused Porphyrin‐Catalyzed Alkene Cyclopropanation.
Authors: Niino Teppei , Toganoh Motoki , Andrioletti Bruno , Furuta Hiroyuki
Published: February 2007

ChemInform 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.
AuCl‐Catalyzed [4 + 2] Benzannulation Between o‐Alkynyl(oxo)benzene and Benzyne.
Authors: Asao Naoki , Sato Kenichiro
Published: February 2007

ChemInform 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.
Ytterbium(III) Triflate‐Catalyzed Stereoselective Synthesis of β‐Lactams via [2 + 2] Cyclocondensation in Ionic Liquid.
Authors: Chen Rener , Yang Bingjian , Su Weike
Published: February 2007

ChemInform 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 Diastereoselective Friedel—Crafts Reaction of Furans with 8‐Phenylmenthyl Glyoxylate.
Authors: Kwiatkowski Piotr , Majer Jakub , Chaladaj Wojciech , Jurczak Janusz
Published: February 2007

ChemInform 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.
Observation of Sequential Electrophilic Substitution of Bromothiophene and Immediate Reductive Elimination of Arylpalladium Complexes.
Authors: Sugie Atsushi , Kobayashi Kei , Suzaki Yuji , Osakada Kohtaro , Mori Atsunori
Published: February 2007

ChemInform 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 N,S‐Substituted 4‐Chloro‐2‐mercapto‐5‐methylbenzenesulfonamide Derivatives as Potential anti‐HIV Agents.
Authors: Brzozowski Z. , Slawinski J.
Published: February 2007

ChemInform 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 Microwave‐Assisted Synthesis of Amine‐Substituted Tetrakis(pentafluorophenyl)porphyrin.
Authors: Samaroo Diana , Soll Clifford E. , Todaro Louis J. , Drain Charles M.
Published: February 2007

ChemInform 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 2′‐Oxo‐1′,2′‐dihydrospiro [cyclopropane‐1,3′‐indole]‐2,2,3,3,‐tetracarbonitriles.
Authors: Kayukova O. V. , Kayukov Ya. S. , Lapteva E. S. , Bardasov I. N. , Ershov O. V. , Nasakin O. E.
Published: February 2007

ChemInform 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 Asymmetric Synthesis of Novel Gastrin Receptor Antagonist AG‐041R (I) via Highly Stereoselective Alkylation of Oxindole Enolates.
Authors: Emura Takashi , Esaki Toru , Tachibana Kazutaka , Shimizu Makoto
Published: February 2007

ChemInform 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.
Heterocyclic Analogues of 5,12‐Naphthacenequinone. Part 3. Synthesis of 4,11‐Diaminonaphtho[2,3‐f]indole‐5,10‐dione and Certain of Its Derivatives.
Authors: Shchekotikhin A. E. , Luzikov Yu. N. , Buyanov V. N. , Preobrazhenskaya M. N.
Published: February 2007

ChemInform 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 Simple Synthesis of 2‐(2‐Chlorophenyl)benzimidazole from o‐Phenylenediamine and 2‐Chlorobenzaldehyde.
Authors: Czaun M. , Nordlander E.
Published: February 2007

ChemInform 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 4,4′‐Bisaryl‐2,2′‐bisbenzimidazoles as Building Blocks for Supramolecular Structures.
Authors: Yasui Yoshizumi , Frantz Derik K. , Siegel Jay S.
Published: February 2007

ChemInform 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.
Nucleophilic Reactions in the N‐Nitrooxazolidine Series.
Authors: Ermakov A. S. , Petrov E. Yu. , Vinogradov D. B.
Published: February 2007

ChemInform 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 Catecholthioethers by the Selective Oxidation of Catechols in Competition with 2‐Mercaptobenzoxazole.
Authors: Tammari Esmail , Mirazi Naser , Nematollahi Davood
Published: February 2007

ChemInform 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.
Multicomponent Synthesis of 3‐Heteroarylpropionic Acids.
Authors: Adamo Mauro F. A. , Duffy Eleanor F.
Published: February 2007

ChemInform 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.
Oxidative Cyclization of Aromatic Aldehyde N‐Acylhydrazones by Bis(trifluoroacetoxy)iodobenzene.
Authors: Shang Zhenhua
Published: February 2007

ChemInform 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.
Novel Synthesis of 1,3,4‐Thiadiazine Derivatives and Their Cycloaddition Reactions.
Authors: Wardakhan Wagnat W.
Published: February 2007

ChemInform 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 C‐Arylation Reaction Found During a Study on the Interaction of Aldohydrazones and Arenediazonium Chlorides.
Authors: Frolova Natalia A. , Vatsadze Sergey Z. , Vetokhina Natalia Yu. , Zavodnik Valery E. , Zyk Nikolay V.
Published: February 2007

ChemInform 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.
Acid‐Mediated Three‐Component aza‐Diels—Alder Reactions of 2‐Aminophenols under Controlled Microwave Heating for Synthesis of Highly Functionalized Tetrahydroquinolines. Part 9. Chemistry of Aminophenols.
Authors: Xing Xinglong , Wu Jinlong , Dai Wei‐Min
Published: February 2007

ChemInform 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 a Naphthyridone p38 MAP Kinase Inhibitor.
Authors: Chung John Y. L. , Cvetovich Raymond J. , McLaughlin Mark , Amato Joseph , Tsay Fuh‐Rong , Jensen Mark , Weissman Steve , Zewge Daniel
Published: February 2007

ChemInform 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.
Facile and Recyclable Method for the Prins Reaction Using Hafnium(IV) Bis(perfluorooctanesulfonyl)amides in Fluorous Biphase System.
Authors: Hao Xiuhua , Hoshi Nobuto
Published: February 2007

ChemInform 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 Dispirooxindolecycloalka[d]pyrimidino[2,3‐b]thiazole Pyrrolidine/Thiapyrrolizidine Ring Systems.
Authors: Poornachandran Mahalingam , Raghunathan Ragavachary
Published: February 2007

ChemInform 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.
Tandem Palladium‐Catalyzed Urea Arylation—Intramolecular Ester Amidation: Regioselective Synthesis of 3‐Alkylated 2,4‐Quinazolinediones.
Authors: Willis Michael C. , Snell Robert H. , Fletcher Anthony J. , Woodward Robert L.
Published: February 2007

ChemInform 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.
2‐Chloroquinazoline: Synthesis and Reactivity of a Versatile Heterocyclic Building Block.
Authors: Henriksen Signe Teuber , Soerensen Ulrik Svane
Published: February 2007

ChemInform 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.
Catalytic, Enantioselective Bifunctional Inverse Electron Demand Hetero‐Diels—Alder Reactions of Ketene Enolates and o‐Benzoquinone Diimides.
Authors: Abraham Ciby J. , Paull Daniel H. , Scerba Michael T. , Grebinski James W. , Lectka Thomas
Published: February 2007

ChemInform 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 Asymmetric Silaboration of Allenes.
Authors: Ohmura Toshimichi , Taniguchi Hiroki , Suginome Michinori
Published: February 2007

ChemInform 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 Helminthosporal Analogues with Plant‐Growth Regulatory Properties Synthesized via Oxyallyl Cation.
Authors: Chaves Fabio C. , Barbosa Luiz C. A. , Demuner Antonio J. , Silva Antonio A.
Published: February 2007

ChemInform 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.
Transformations of Diepoxy Derivatives of Limonene in Homogeneous Acidic Media.
Authors: Salomatina O. V. , Yarovaya O. I. , Korchagina D. V. , Gatilov Yu. V. , Polovinka M. P. , Barkhash V. A.
Published: February 2007

ChemInform 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.
Inhibition of Intramolecular Reactions of (+)‐δ‐Cadinol.
Authors: Krasnoslobodtseva O. Yu. , Valeev F. A. , Shitikova O. V. , Tolstikov G. A.
Published: February 2007

ChemInform 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 6‐Deoxo‐24‐epiteasterone and Its Analogues.
Authors: Litvinovskaya R. P. , Aver'kova M. A. , Baranovskii A. V. , Khripach V. A.
Published: February 2007

ChemInform 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 20‐Hydroxyecdysone Oxime, Its Diacetonide, and Their 14,15‐Anhydro Derivatives.
Authors: Galyautdinov I. V. , Ves'kina N. A. , Afon'kina S. R. , Khalilov L. M. , Odinokov V. N.
Published: February 2007

ChemInform 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.
The Lithiation of 2‐Chloroglucal Derivatives.
Authors: Boyd Ewan , Hallett Michael R. , Jones Ray V. H. , Painter James E. , Patel Prakash , Quayle Peter , Waring Anita J.
Published: February 2007

ChemInform 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.
The First Asymmetric Total Synthesis of (R)‐Tuberolactone, (S)‐Jasmine Lactone and (R)‐δ‐Decalactone.
Authors: Sabitha Gowravaram , Bhaskar V. , Yadav J. S.
Published: February 2007

ChemInform 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.
Puerariafuran, a New Inhibitor of Advanced Glycation End Products (AGEs) Isolated from the Roots of Pueraria lobata.
Authors: Jang Dae Sik , Kim Jong Min , Lee Yun Mi , Kim Young Sook , Kim Joo‐Hwan , Kim Jin Sook
Published: February 2007

ChemInform 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.
An Efficient in Silico Screening Method Based on the Protein—Compound Affinity Matrix and Its Application to the Design of a Focused Library for Cytochrome P450 (CYP) Ligands.
Authors: Fukunishi Yoshifumi , Hojo Shinichi , Nakamura Haruki
Published: February 2007

ChemInform 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.
Recognition of LXXLL by Ligand Binding Domain of the Farnesoid X Receptor in Molecular Dynamics Simulation.
Authors: Zhang Tao , Dong Xi‐Cheng , Chen Min‐Bo
Published: February 2007

ChemInform 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 Cluster‐Based Strategy for Assessing the Overlap Between Large Chemical Libraries and Its Application to a Recent Acquisition.
Authors: Engels Michael F. M. , Gibbs Alan C. , Jaeger Edward P. , Verbinnen Danny , Lobanov Victor S. , Agrafiotis Dimitris K.
Published: February 2007

ChemInform 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.
The Co—Ga—Ge (Cobalt—Gallium—Germanium) System
Authors: Gupta K. P.
Published: February 2007

ChemInform 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.
Chiral Triosmium and Triruthenium Clusters: Syntheses, Interconversions and Potential Applications
Authors: Ershova Victoria A.
Published: February 2007

ChemInform 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.
Ligands of Biologically Active Compounds in the Nanochemistry of Silver and Gold
Authors: Evstigneeva R. P. , Pchelkin V. P.
Published: February 2007

ChemInform 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.
The Pictet—Spengler Reaction: Efficient Carbon—Carbon Bond Forming Reaction in Heterocyclic Synthesis
Authors: Youn So Won
Published: February 2007

ChemInform 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.
Quaternary Benzo[c]phenanthridines Sanguinarine and Chelerythrine: A Review of Investigations from Chemical and Biological Studies
Authors: Dvorak Zdenek , Kuban Vlastimil , Klejdus Borivoj , Hlavac Jan , Vicar Jaroslav , Ulrichova Jitka , Simanek Vilim
Published: February 2007

ChemInform 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.
Acid—Base Catalysis of Chiral Pd Complexes: Development of Novel Catalytic Asymmetric Reactions and Their Applications to Synthesis of Drug Candidates
Authors: Hamashima Yoshitaka
Published: February 2007

ChemInform 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.
Sodium Acetylides
Authors: Mordini Alessandro , Valacchi M.
Published: February 2007

ChemInform 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.
Alkenylsodium Compounds
Authors: Mordini Alessandro , Valacchi M.
Published: February 2007

ChemInform 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.
Organic Chemistry for Inorganic Chemists: Unsymmetrical Schiff Bases Derived from 3‐Formylsalicylic Acid as Versatile Ligands in Coordination Chemistry
Authors: Andruh Marius , Tuna Floriana
Published: February 2007

ChemInform 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 and Bulk Morphology of Styrene‐ferrocenylsilane‐methyl Methacrylate Tri‐ and Pentablock Copolymers
Authors: Kloninger Christian , Datta Uttam , Rehahn Matthias
Published: February 2007

ChemInform 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.
General Methods for the Synthesis of Difluoromethylphosphonates
Authors: Lequeux Thierry P.
Published: February 2007

ChemInform 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.
Intramolecular .sigma±sigma., .pi±pi., and .sigma±pi. Interactions of Aryloligosilanes: Functions in Their Excimer/Exciplex Formation, Charge‐Transfer, and Energy Transfer Processes
Authors: Karatsu Takashi , Yagai Shiki , Kitamura Akihide
Published: February 2007

ChemInform 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.
Strategies in Synthetic Radical Organic Chemistry — Recent Advances on Cyclization and SRN1 Reactions
Authors: Rossi Roberto A. , Penenory Alicia B.
Published: February 2007

ChemInform 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.
Carbamoyllithium and Trihalomethyllithium Compounds
Authors: Metallinos Costa
Published: February 2007

ChemInform 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.
Lithium Alkynolates, Alkynethiolates, and Alkyneselenolates
Authors: Brandsma Lambert , Zwikker Jan W.
Published: February 2007

ChemInform 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.
Lithium Acetylides
Authors: Brandsma Lambert , Zwikker Jan W.
Published: February 2007

ChemInform 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.
Allenyllithium Compounds
Authors: Brandsma Lambert , Zwikker Jan W.
Published: February 2007

ChemInform 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.
Lithium Metal
Authors: Dieter R. Karl
Published: February 2007

ChemInform 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.
Open‐Shell Rhodium and Iridium Species in (Catalytic) Oxygenation Reactions
Authors: Hetterscheid Dennis G. H. , de Bruin Bas
Published: February 2007

ChemInform 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.
Reaction Mechanisms. Pericyclic Reactions
Authors: Tantillo Dean J.
Published: February 2007

ChemInform 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.
Reaction Mechanisms. Radical and Radical Ion Reactions
Authors: Tanko J. M.
Published: February 2007

ChemInform 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.
Understanding the Conformation of Polysaccharides
Authors: Wang Qi , Cui Steve W.
Published: February 2007

ChemInform 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 N,N,N‐4,4′′‐Di‐(4‐methylphenyl)‐2,2′:6′,2′′‐terpyridine‐N,N,N‐tris(isothiocyanato) Ruthenium(II) and Application to Colorimetric Hg2+ Sensor
Authors: Li Xiang‐Hong , Liu Zhi‐Qiang , Li Fu‐You , Duan Xin‐Fang , Huang Chun‐Hui
Published: February 2007

A terpyridine derivative DPTP [di‐(4‐methylphenyl)‐2,2′:6′,2′ ′‐terpyridine] was conveniently synthesized from 2‐bromopyridine via halogen‐dance reaction, Kharash coupling and Stille coupling reaction. Then its corresponding ruthenium complex Ru‐DPTP [N,N,N‐4,4′′‐di‐(4‐methylphenyl)‐2,2′:6′,2′′‐terpyridine‐N,N,N‐tris(iso‐thiocyanato)‐ruthenium(II) ammonium] was obtained and fully characterized by IR, UV‐Vis, ESI MS and elemental analysis. The MLCT absorption band of Ru‐DPTP was blue‐shifted from 570 to 500 nm upon addition of Hg2+. Among a series of surveyed metal ions, the complex showed a unique recognition to Hg2+, indicating that it can be used as a selective colorimetric sensor for Hg2+.
Transport Selectivity of a Diethylene Glycol Dimethacrylate‐Based Thymine‐imprinted Polymeric Membrane over a Cellulose Support for Nucleic Acid Bases
Authors: Qu Xiang‐Jin , Chen Chang‐Bao , Zhou Jie , Wu Chun‐Hui
Published: February 2007

The binding mechanism between 9‐vinyladenine and pyrimidine base thymine in methanol was studied with UV‐visible spectrophotometric method. Based on this study, using thymine as a template molecule, 9‐vinyladenine as a novel functional monomer and diethylene glycol dimethacrylate as a new cross‐linker, a specific diethylene glycol dimethacrylate‐based molecularly imprinted polymeric membrane was prepared over a cellulose support. Then, the resultantly polymeric membrane morphologies were visualized with scanning electron microscopy and its permselectivity was examined using thymine, uracil, cytosine, adenine and guanine as substrates. This result showed that the imprinting polymeric membrane prepared with diethylene glycol dimethacrylate exhibited higher transport capacity for the template molecule thymine and its optimal analog uracil than other nucleic acid bases. The membrane also took on higher permselectivity than the imprinted membrane made with ethylene glycol dimethacrylate as a cross‐linker. When a mixture including five nucleic acid bases thymine, uracil, cytosine, adenine and guanine passed through the diethylene glycol dimethacrylate‐based thymine‐imprinted polymeric membrane, recognition of the membrane for the template molecule thymine and its optimal analog uracil was demonstrated. It was predicted that the molecularly imprinted membrane prepared with diethylene glycol dimethacrylate as cross‐linker might be applicable to thymine assay of absolute hydrolysates of DNA or uracil assay of absolute hydrolysates of RNA in biological samples because of its high selectivity for the template molecule thymine and its optimal analog uracil.
A Simple Frontal Analysis Equation to Determine the Adsorption Parameters of Solute Molecules on Different Adsorbents
Authors: Bian Liu‐Jiao , Yang Xiao‐Yan , Liu Li
Published: February 2007

A simple frontal analysis equation to determine the adsorption parameters of solute molecules on different adsorbents was presented. It gives the relationship between the average breakthrough time and the feed solute concentration, and by using its linear form, two important parameters, the thermodynamic equilibrium constant KSL for solute adsorption on the surface of adsorbent and the number nt of total adsorption sites distributed on the surface of adsorbent, can be simultaneously determined. The frontal analyses for some aromatic hydrocarbons on RP‐C18 reversed‐phase medium, and some protein molecules on RP‐C18 reversed‐phase, WCX‐1 cation‐exchange, PEG‐400 hydrophobic and Che1ating Sepharose Fast‐flow separately chelated with Zn2+ or Cu2+ media, were separately carried out to test this equation and their adsorption parameters KSL and nt were separately obtained. The results show that all these frontal analysis data can be well described by this frontal analysis equation. For all of these frontal analysis systems, their parameters nt can separately approximately keep constant and they are independent of solute molecules used, while their parameters KSL are dependent upon both of the media packed in frontal analysis column and the solute molecules used.
Convenient Synthesis and Enhanced Second‐order Nonlinear Optical Property of a Novel Hyperbranched Polymer
Authors: Zhu Zhi‐Chao , Li Zhong‐An , Li Qian‐Qian , Zeng Qi , Li Zhen , Ye Cheng , Qin Jin‐Gui
Published: February 2007

A novel hyperbranched polymer (3) was prepared by copolymerization of tri‐aldehyde moieties with azo chromophores having two active methelene groups, from "A2+B3" approach based on simple Kneovenagel reaction. For comparison, its analogue linear polymer (5) was also synthesized. The two polymers are soluble in common organic solvents, and exhibit good thermal stability. Interestingly, the hyperbranched polymer demonstrates dramatically enhanced second‐order nonlinear optical property with comparison to its linear analogue.
An improved iterative SENSE reconstruction method
Authors: Qu Peng , Luo Jing , Zhang Bida , Wang Jianmin , Shen Gary X.
Published: February 2007

The conjugate‐gradient (CG)‐based non‐Cartesian SENSE reconstruction usually exhibits unstable convergence behavior due to the ill conditioning of the generalized encoding matrix (GEM). To overcome this difficulty, an improved iterative SENSE approach is presented. During a so‐called Lanczos iteration process, which is equally efficient as CG, the inversion of GEM can be gradually approximated by calculating inversions of a series of small tridiagonal matrices. In this fashion, inner regularization can be incorporated into the reconstruction without touching the iteration process. The degree of regularization can be determined based on the eigenvalue information provided by the Lanczos process. With inner regularization adaptively applied for every iteration vector, the convergence behavior of iterative SENSE can be significantly improved and noise amplification can be avoided. The feasibility of this novel iterative SENSE technique is demonstrated by radial and spiral MRI experiments. © 2007 Wiley Periodicals, Inc. Concepts Magn Reson Part B (Magn Reson Engineering) 31B: 44–50, 2007
An eight‐channel, nonoverlapping phased array coil with capacitive decoupling for parallel MRI at 3 T
Authors: von Morze Cornelius , Tropp James , Banerjee Suchandrima , Xu Duan , Karpodinis Kostas , Carvajal Lucas , Hess Christopher P. , Mukherjee Pratik , Majumdar Sharmila , Vigneron Daniel B.
Published: February 2007

An eight‐channel, nonoverlapping phased array coil was designed for conventional and parallel imaging of the brain and the hip at 3T. The nonoverlapping design was selected on the basis of reduced parallel reconstruction noise inflation, as predicted by the diminution of g‐factor hotspots in SENSE reconstruction simulations, and the higher peripheral signal‐to‐noise ratio (SNR) expected from smaller coil elements. A capacitive bridging technique, modeled by a circuit simulation, reduced the crosstalk between nearest neighbors to a manageable level. The capacitive decoupling technique was effective enough to allow the coil to be operated using standard system preamplifiers. The coil was shown to be useful for several conventional and parallel imaging applications. SNR improvements over a commercial eight‐channel head coil were demonstrated in important structures in EPI‐SENSE diffusion‐weighted imaging. High‐resolution MRSI (0.22 cc) yielded SNR of up to 21 for the NAA peak in the cortical gray matter. The coil also provided excellent fourfold accelerated GRAPPA images of the hip. © 2007 Wiley Periodicals, Inc. Concepts Magn Reson Part B (Magn Reson Engineering) 31B: 37–43, 2007
Two‐dimensional adaptive mesh generation
Authors: Zhang Yaoxin , Jia Yafei , Wang Sam S. Y.
Published: February 2007

In this paper, a two‐dimensional adaptive elliptic mesh generation system, derived from the Ryskin and Leal (RL) orthogonal mesh generation system based on the orthogonal condition (orthogonality) and the cell area equal‐distribution principle (adaptivity), is presented. The proposed generation system takes into account not only the mesh orthogonality and adaptivity but also the mesh smoothness by adopting a method that the distortion functions is determined by both the scale factors and the averaged scale factors of the constant mesh lines. Examples and application show that the proposed generation system is effective and easy to use. Copyright © 2007 John Wiley & Sons, Ltd.
A stress‐based least‐squares finite‐element model for incompressible Navier–Stokes equations
Authors: Prabhakar V. , Reddy J. N.
Published: February 2007

In this paper we present a stress‐based least‐squares finite‐element formulation for the solution of the Navier–Stokes equations governing flows of viscous incompressible fluids. Stress components are introduced as independent variables to make the system first order. Continuity equation becomes an algebraic equation and is eliminated from the system with suitable modifications. The h and p convergence are verified using the exact solution of Kovasznay flow. Steady flow past a large circular cylinder in a channel is solved to test mass conservation. Transient flow over a backward‐facing step problem is solved on several meshes. Results are compared with that obtained using vorticity‐based first‐order formulation for both benchmark problems. Copyright © 2007 John Wiley & Sons, Ltd.
Xylem sap flows of irrigated Tamarix elongata Ledeb and the influence of environmental factors in the desert region of Northwest China
Authors: Qu Yanping , Kang Shaozhong , Li Fusheng , Zhang Jianhua , Xia Guimin , Li Wangcheng
Published: February 2007

Tamarix elongata Ledeb is a desert shrub found in the desert region of Northwest China and is commonly cultivated as a sand‐holding plant in this region. To understand its water requirement and the effects of climate conditions on its growth, trunk xylem sap flows of irrigated 8‐year‐old Tamarix elongata Ledeb plants were monitored continuously with heat‐pulse sap flow meters for the entire season. Soil moisture contents at 0–300 cm layer depth were also measured with a tube type time domain reflectometry (Tube‐TDR). Meteorological factors, i.e. solar radiation, air temperature, relative humidity and wind speed were simultaneously monitored by an automatic weather station at the site. Daily and seasonal variations of the trunk sap fluxes and their correlations with the meteorological factors, reference evapotranspiration and soil moisture contents in the root‐zone were analysed. The results indicated that frost influenced the trunk sap flux greatly under irrigated conditions, although the flux generally fluctuated with the variation of environmental factors and showed a mean trunk sap flux of 4·18 l d−1. There was a significantly exponential relationship between sap flux and the reference value of crop evapotranspiration, with a correlation coefficient of R2 = 0·7172. The sap flux also had a significant correlation with the soil water contents at a depth of 150–300 cm from soil surface (R2 = 0·5014). The order of the main meteorological factors affecting the sap flux of Tamarix elongata Ledeb trees was solar radiation > air temperature > vapour pressure deficit > relative humidity > wind speed. Copyright © 2007 John Wiley & Sons, Ltd.
Microbial Food Webs in an Artificially Divided Acidic Bog Lake
Authors: Šimek Karel , Babenzien Dieter , Bittl Thomas , Koschel Rainer , Macek Miroslav , Nedoma Jiří , Vrba Jaroslav
Published: February 2007

The microbial loop of a naturally acidic bog lake, Große Fuchskuhle (Northeastern Germany), that had been artificially divided into 4 basins, was investigated. In the northeast (NE) and southwest (SW) basins, which differ strongly in chemistry and primary production, we conducted intensive studies of the main carbon fluxes through microbial food webs. In the less acidic, NE basin, much higher phytoplankton as well as bacterial biomass and production were found in parallel with negligible numbers of larger zooplankters. Weakly top‐down controlled populations of protists were characterized by an exceptionally low numerical proportion of heterotrophic nanoflagellates (HNF) to ciliates (‐1.5‐3.5). The ciliate community was dominated by a scuticociliate, Cyclidium sp. (>95% of total ciliates), with an estimated grazing rate equal to 46–80% of heterotrophic bacterial production. In contrast, in the more humic, SW basin, both phyto‐ and bacterioplankton dynamics seemed to be top‐down controlled by abundant populations of small fine‐filter feeding cladocerans, Ceriodaphnia quadrangula and Diaphanosoma brachyurum. Consequently, ciliates disappeared from the food web structure of the SW basin, HNF dropped to negligible numbers and bacteria showed very uniform morphology, dominated by small cocci or short rods. Our investigations have shown that the division of the lake into separate compartments can lead to very different microbial food web structures with extreme species compositions.
The Importance of the Manganese‐Oxidizing Microorganism Metallogenium personatum for the Retention of Manganese in the Wahnbach Reservoir
Authors: Herschel A. , Clasen J.
Published: February 2007

The retention of manganese in the water of the Wahnbach reservoir was determined in mass balance calculations. The retention properties for manganese drastically decreased after the phosphorus elimination plant was taken into service. Processes controlling the distribution and mobility of manganese in the reservoir were based on the results of tests conducted to evaluate the role of the microorganism Metallogenium personatum. A substantial retention of manganese in the Wahnbach reservoir was found to be dependent on the presence of this planktonic manganese‐oxidizing bacterium. The test results clearly indicate the importance of Metallogenium spec. as catalyst in the removal and oxidation of dissolved Mn(II).
An Unique Anchialine Pool in the Hawaiian Islands
Authors: Brock Richard E. , Bailey‐Brock Julie H.
Published: February 2007

The Sailor's Hat crater was artificially formed on the south coast of Kaho'olawe Island in 1965 with explosives. The explosion formed a crater about 50 m from the shoreline, which penetrates the watertable to a 5 m depth. The pool at the bottom of the crater meets the criteria of an anchialine pond because it shows tidal fluctuation, has measurable salinity, and lacks surface connections to the sea. The water chemistry of this pool is similar to the ocean except silica is elevated and salinity is slightly depressed suggesting a small groundwater influence. The fauna is dominated by waterboatmen, an endemic shrimp and tubeworm, polychaetes, amphipods, an ostracod, gastropod, solitary ectoproct. anemone, flatworm and sponge. The atyid shrimp, Halocaridina rubra, is a characteristic species of Hawaiian anchialine systems and probably colonized this 32‐year old pool by active migration via the watertable. Colonization by the remaining fauna may have occurred by storm surf (for marine species) or with the wind. Most predators are unable to inhabit anchialine ponds because of difficult access due to physical barriers, or to unsuitable ecological conditions. The anchialine habitat and life history strategy of the atyid shrimp have probably been important influences on the adaptative success of H. rubra in the Hawaiian Islands, and may be important characteristics of hypogeal anchialine species elsewhere.
Responses of Bacterial Assemblages on Standing‐Decaying Blades of Smooth Cordgrass to Additions of Water and Nitrogen
Authors: Newell Steven Y. , Palm Laura A.
Published: February 2007

Plots of intermediate‐height cordgrass (Spartina alterniflora) were fertilized with nitrogen, misted with freshwater, given both misting and N, or left untreated. Bacterial responses on standing‐decaying leaf blades were measured as changes in epiphytic mass, rates of shedding of bacterial cells into seawater, and rates of net growth on blades. Epiphytic mass rose with time, and it did so 6‐fold more sharply for the combination of fertilization and misting than for control. Since the sediment surface would offer higher N and water availability, this may indicate that movement of leaf material to marsh sediments would strongly favor bacterial activity. Net growth on aerially incubated (15 h), wet blades as percentage of standing bacterial mass was unchanging with duration of decay period, but was affected by treatment (about 0 to +5% h−1 for misted treatments, +15% h−1 for unmisted treatments). Faster growth on newly wetted, unmisted blades may have been due to release of cells from growth limitation by desiccation. Plot treatment did not affect specific rate of bacterial shedding (about 8% of standing bacterial epiphytic mass during one h of submergence at 4 weeks, and 149% h−1 at 12 weeks). It may be that during high spring tides, bacterial shedding from standing‐decaying blades could provide numbers of new cells in the water column near to or greater than those provided by division of bacterioplanktonic cells.
A Method Based on Artificial Substrates to Monitor Hyporheic Biofilm Development
Authors: Claret Cecile
Published: February 2007

A method based on artificial substrata is proposed to study hyporheic biofilm development as well as the procedure to remove bacteria from these biofilms. The device is a perforated pipe in which glass slides are introduced vertically. Attached bacteria are removed by sonication for 180 seconds at power 2 (arbitrary unit); longer sonication time or higher power can cause cell destruction. A bacterial colonization experiment was performed in an upwelling zone of a riffle in the Rhǒne River. Total bacterial abundances reached a steady‐state after 5 days of colonization, and the percentage of ETS‐active bacteria was maximal after 3 days of incubation in the bed sediments. These results validate this device as usable to monitor biofilm development in natural systems, making this method as a promising tool to characterize the trophic status of a stream using integrative biological descriptors.