bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Domino Oxa‐Michael Addition—Aldol Reaction: Access to Variably Substituted Tetrahydroxanthenones.
Authors: Ohnemueller Ulrike K. , Nising Carl F. , Nieger Martin , Braese Stefan 
Published: July 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Novel Route to the Synthesis of 4‐Quinolyl Isothiocyanates.
Authors: Zhong Boyu , Al‐Awar Rima S. , Shih Chuan , Grimes John H. Jr. , Vieth Michal , Hamdouchi Chafiq 
Published: July 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
1‐Phenyl‐8‐azabicyclo[3.2.1]octane Ethers: A Novel Series of Neurokinin (NK1) Antagonists.
Authors: Huscroft Ian T. , Carlson Emma J. , Chicchi Gary G. , Kurtz Marc M. , London Clare , Raubo Piotr , Wheeldon Alan , Kulagowski Janusz J. 
Published: July 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Synthesis of Dibenzo[b,g][1,5]diazoninedione and Isoindolo[2,1‐a]quinazoline Derivatives.
Authors: Bakavoli Mehdi , Davoodnia Abolghasem , Rahimizadeh Mohammad , Heravi Majid M. 
Published: July 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Discovery of Novel and Selective Tertiary Alcohol Containing Inhibitors of the Norepinephrine Transporter.
Authors: Cases‐Thomas Manuel J. , et al. et al. 
Published: July 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Syntheses of New Substituted Triazino Tetrahydroisoquinolines and β‐Carbolines as Novel Antileishmanial Agents.
Authors: Kumar Arun , Katiyar Sanjay Babu , Gupta Suman , Chauhan Prem M. S. 
Published: July 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Ytterbium‐Catalyzed Dual Intermolecular Hydrophosphination: Synthesis of Bis(phosphinyl)dienes and Bis(alkenyl)phosphine Oxides.
Authors: Komeyama Kimihiro , Kobayashi Daisuke , Yamamoto Yuta , Takehira Katsuomi , Takaki Ken 
Published: July 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Reactions of Allenylphosphonates with 2‐Aminoethanol and Amines.
Authors: Khusainova N. G. , Mostovaya O. A. , Berdnikov E. A. , Litvinov I. A. , Krivolapov D. B. , Cherkasov R. A. 
Published: July 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Copper‐Promoted Carbon—Nitrogen Bond Formation with 2‐Iodo‐selenophene and Amides.
Authors: Soares do Rego Barros Olga , Nogueira Cristina W. , Stangherlin Eluza C. , Menezes Paulo Henrique , Zeni Gilson 
Published: July 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Domino‐Cyclization and Hydrogenation of Citronellal to Menthol over Bifunctional Ni/Zr‐β and Zr‐β/Ni‐MCM‐41 Catalysts.
Authors: Nie Yuntong , Chuah Gaik‐Khuan , Jaenicke Stephan 
Published: July 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Seragamides A—F, New Actin‐Targeting Depsipeptides from the Sponge Suberites japonicus Thiele
Authors: Tanaka Chiaki , Tanaka Junichi , Bolland Robert F. , Marriott Gerard , Higa Tatsuo 
Published: July 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Evolution of a Strategy for the Synthesis of Structurally Complex Batzelladine Alkaloids. Enantioselective Total Synthesis of the Proposed Structure of Batzelladine F and Structural Revision.
Authors: Cohen Frederick , Overman Larry E. 
Published: July 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Transition Metal Complexes in Organic Synthesis. Part 77. First Enantioselective Total Synthesis of Neocarazostatin B (I), Determination of Its Absolute Configuration and Transformation into Carquinostatin A (II).
Authors: Czerwonka Regina , Reddy Kethiri R. , Baum Elke , Knoelker Hans‐Joachim 
Published: July 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Novel and Efficient Synthetic Path to Proaporphine Alkaloids: Total Synthesis of (.+‐.)‐Stepharine (Ia) and (.+‐.)‐Pronuciferine (Ib).
Authors: Honda Toshio , Shigehisa Hiroki 
Published: July 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Stereospecific Formal Total Synthesis of Ecteinascidin 743
Authors: Zheng Shengping , Chan Collin , Furuuchi Takeshi , Wright Benjamin J. D. , Zhou Bishan , Guo Jinsong , Danishefsky Samuel J. 
Published: July 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Psoracorylifols A—E, Five Novel Compounds with Activity Against Helicobacter pylori from Seeds of Psoralea corylifolia.
Authors: Yin Sheng , Fan Cheng‐Qi , Dong Lei , Yue Jian‐Min 
Published: July 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
First Application of Supported Ionic Liquid Phase (SILP) Catalysis for Continuous Methanol Carbonylation.
Authors: Riisager Anders , Joergensen Betina , Wasserscheid Peter , Fehrmann Rasmus 
Published: July 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Do Enzymes Sleep and Work?
Authors: Engelkamp Hans , Hatzakis Nikos S. , Hofkens Johan , De Schryver Frans C. , Nolte Roeland J. M. , Rowan Alan E. 
Published: July 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Synthesis and Role of Glycosylthio Heterocycles in Carbohydrate Chemistry
Authors: El Ashry E. S. H. , Awad L. F. , Atta A. I. 
Published: July 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Synthesis of Nitrogen‐Containing Natural Products Using Allyl Cyanate‐to‐Isocyanate Rearrangement
Authors: Ichikawa Yoshiyasu 
Published: July 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Isolation, Structure, and Properties of Optically Active Chalcogenic Acids and Their Derivatives
Authors: Nakashima Yusuke , Shimizu Toshio , Kamigata Nobumasa 
Published: July 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Current State of the Art in Cyclodextrin‐Induced Room Temperature Phosphorescence in the Presence of Oxygen
Authors: Peng Yun Lin , Wang Ying Te , Wang Yu , Jin Wei Jun 
Published: July 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
The Interplay of Indicator, Support and Analyte in Optical Sensor Layers
Authors: Orellana Guillermo , Moreno‐Bondi Maria C. , Garcia‐Fresnadillo David , Marazuela Maria D. 
Published: July 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Studies on Pd/Imidazolium Salt Protocols for Aminations of Aryl Bromides and Iodides Using Lithium Hexamethyldisilazide (LHMDS).
Authors: Lerma Israel Conesa , Cawley Mark J. , Cloke F. Geoffrey N. , Arentsen Katherine , Scott James S. , Pearson Stuart E. , Hayler John , Caddick Stephen 
Published: July 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Mg‐Promoted Reductive Coupling of Aromatic Carbonyl Compounds with Trimethylsilyl Chloride and Bis(chlorodimethylsilyl) Compounds.
Authors: Uchida Tetsuro , Kita Yoshio , Maekawa Hirofumi , Nishiguchi Ikuzo 
Published: July 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Reaction Between Phosphines and Itaconic Anhydride in the Presence of Water: An Efficient One‐Pot Synthesis of 5‐Oxo‐1,2λ5‐oxaphospholanes.
Authors: Teimouri Mohammad Bagher 
Published: July 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
New Reaction Pathway of Dialkyl Phosphorochloridites with Salts of α‐Benzylideneaminocarboxylic Acids. Direct Synthesis of α‐Aminophosphonates from Isostructural α‐Benzylideneaminocarboxylic Acids.
Authors: Bayandina E. V. , Davydova E. Yu. , Abaskalova M. A. , Musin R. Z. , Al'fonsov V. A. 
Published: July 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Ein 8‐fach‐Parallel‐Reaktorsystem für die kombinatorische Katalyseforschung
Authors: Stoll N. , Allwardt A. , Dingerdissen U. , Thurow K. 
Published: July 2006

AbstractDie fortschreitende Globalisierung der Märkte erfordert von Unternehmen, ihre Produkte mit geringerem Zeit‐ und Kostenaufwand zu entwickeln. Das in dieser Arbeit vorgestellte Parallel‐Reaktorsystem ermöglicht es, innerhalb kurzer Zeit multiple Reaktionen im kostengünstigen 2‐mL‐Maßstab parallel durchzuführen und somit Forschungsergebnisse zeit‐ und kosteneffizient zu generieren. Auf Grund seines reaktorindividuell regelbaren Parameterbereichs bezüglich Reaktionsdruck (0 bis 150 bar), Temperatur (–40 bis +200 °C) und Rührintensität (0 bis 1000 rpm) bietet es ein hohes Maß an Flexibilität. Die Online‐Druckverfolgung gestattet Rückschlüsse auf den Reaktionsfortschritt. Durch die Gewährleistung von Inertgasbedingungen können auch luftempfindliche Substanzen eingesetzt werden. Die Reaktionsabläufe werden mit Hilfe einer graphischen Bedienoberfläche zeitparallel zum Prozessverlauf oder auf Basis eines im Vorfeld geplanten Ablaufs (Kommandoliste) gesteuert.
ConNeCat‐Kompetenznetzwerk Katalyse
Authors: Schleyer D. 
Published: July 2006

AbstractDas Kompetenznetzwerk Katalyse (ConNeCat) ist im Jahr 2000 als ein durch das Bundesministerium für Bildung und Forschung gefördertes Netzwerk gegründet worden. Es versteht sich als Ideenplattform und Koordinierungsstelle der Katalyseforschung in Deutschland.
Homogen katalysierte stereoselektive Hydrierreaktion im mizellaren Medium
Authors: Schwarze M. , Schomäcker R. 
Published: July 2006

AbstractBei der Herstellung von Feinchemikalien und Pharmazeutika werden vermehrt homogene Katalysatoren eingesetzt. Für einen wirtschaftlich nutzbaren Prozess ist es erforderlich, den Katalysator mehrmals wieder zu verwenden. Im Anschluss an eine stereoselektive Hydrierreaktion ist es prinzipiell möglich, zur Katalysatorrückgewinnung die „Micellar Enhanced Ultrafiltration”︁ (MEUF) einzusetzen. Für Membranen mit einem Cutoff von 10 kDa und kleiner zeigen sich Katalysatorrückhalte > 98 %. Bei der Katalysatorrückgewinnung im technischen Maßstab stellt sich die Frage, welcher Rückhalt erreicht werden muss, um das Produkt wirtschaftlich zu erzeugen.
DECHEMA‐Fachsektion Katalyse
Authors: Dittmeyer R. 
Published: July 2006

AbstractDie DECHEMA‐Fachsektion Katalyse ist ein Zusammenschluss von an der Katalyse interessierten Mitgliedern innerhalb der DECHEMA e.V. Sie arbeitet wettbewerbsneutral und gemeinnützig nach einer von ihr beschlossenen Geschäftsordnung. Sie steht wie jede andere DECHEMA‐Fachsektion jedem Mitglied ohne zusätzliche Beiträge offen. Mitglieder der Fachsektion können natürliche und juristische Personen sein. Letztere benennen für die Fachsektion einen persönlichen Vertreter. Die Mitgliederversammlung wählt einen Vorstand, der die Fachsektion leitet und in nationalen wie internationalen Gremien vertritt. Der Fachsektion stehen die organisatorischen und technischen Einrichtungen der DECHEMA e.V. zur Erfüllung ihrer Aufgaben zur Verfügung. Die Koordinierung erfolgt über die wissenschaftlichen und organisatorischen Betreuer bei der DECHEMA e.V.
Charakterisierung von Katalysatoren
Authors: Albers Peter 
Published: July 2006

AbstractVorgestellt werden Beispiele der Nutzung geeigneter Methodenkombinationen, um bestimmte Fragestellungen bei der Charakterisierung typischer Katalysatortypen zu klären. Zudem wird anhand eines aktuellen Beispiels aus der Brennstoffzellenkatalyse die Verknüpfung von Informationen aus heutzutage laborüblichen Methoden mit Techniken der Grundlagenforschung angesprochen. Dabei geht es um die Bestimmung der Adsorptionseigenschaften geträgerter Platin‐Nanopartikel und der Platzbesetzung durch atomaren Wasserstoff unter realistischen Bedingungen.
Formation of Unexpected Selenium‐Rich Compounds by Selenation of the Very Bulky (PhMe2Si)3CLi:s‐Tetraselenane, a Novel Polyseleno Heterocycle
Authors: Klapötke Thomas M. , Krumm Burkhard , Polborn Kurt , Scherr Matthias 
Published: July 2006

AbstractThe reaction of the highly crowded trisilylmethyllithium compound (PhMe2Si)3CLi with elemental selenium resulted in a variety of products, among them the triselane [(PhMe2Si)3CSe]2Se, the unexpected diselane [(PhMe2Si)2HCSe]2and the novel heterocycle [(PhMe2Si)2CSeSe]2. The constitution of the latter could be elucidated from the NMR spectroscopic data and was confirmed by the crystal structure which displays the C2Se4cycle in the twist form. Calculations were performed for the chair and twist conformers of the heterocycles [(H3Si)2CXX]2(X = O, S, Se, Te, Po).
Polyphenylenes and Poly(phenyleneethynylene)s with 9,10‐Anthrylene Subunits
Authors: Yang Changduk , Jacob Josemon , Müllen Klaus 
Published: July 2006

AbstractSummary: Light‐emitting conjugated polyphenylenes and poly(phenyleneethynylene)s have been synthesized, which comprise of 9,10‐linked anthracene repeat units with branched alkyl side‐chains (2‐octyldecyl) at the 2,6‐positions with p‐terphenyl (P1), p‐diethynylbenzene (P2), and diphenylacetylene (P3) units. Both Sonogashira‐Hagihara and Suzuki‐Miyaura‐type cross‐coupling reactions under palladium catalysis were used as polycondensation methods. The branched alkyl side chains not only improve the solubility of the resulting copolymers but also prevent stacking in the solid state as evident from the almost identical PL spectra in solution and film. The copolymers P1 and P3 display pure blue emission while P2 exhibits green emission due to the extended π‐system along the polymer backbone. All polymers possess high thermal stability and P1 shows the best solubility and film‐forming ability among the three copolymers investigated. Furthermore, the enhanced color stability of this material is demonstrated by the almost identical PL spectra obtained on annealing at 200 °C.Alternating copolymers P1, P2, and P3.imageAlternating copolymers P1, P2, and P3.
Morphology Characterization of PP/Clay Nanocomposites Across the Length Scales of the Structural Architecture
Authors: Százdi László , Ábrányi Ágnes , Pukánszky Béla , Vancso Julius G. , Pukánszky Béla 
Published: July 2006

AbstractSummary: The structure and rheological properties of a large number of layered silicate poly(propylene) nanocomposites were studied with widely varying compositions. Morphology characterization at different length scales was achieved by SEM, TEM, and XRD. Rheological measurements supplied additional information about structure. The results showed that these materials possess a very complex structural architecture. The introduction of functionalized polymer decreased the size of the original clay particles and improved their interaction with the polymer matrix. However, relatively large silicate particles were found also in composite samples yielding XRD traces without silicate reflection. XRD supplies information of limited value if the amount of silicate is low, the gallery distance of the stacks is large or their regularity is limited. On the other hand, XRD indicates intercalation well. Although exfoliated individual layers can be detected by TEM, the method cannot be used to draw general conclusions about the structure of layered silicate nanocomposites because of statistical sampling and bias. A large number of individual layers, i.e. large extent of exfoliation, led to the formation of a silicate network structure, which can be detected very sensitively by Cole‐Cole plots of dynamic viscosity. We found that all four morphological entities (particles, intercalated stacks, individual layers, network) may be present simultaneously in the composites. The presence and relative amount must definitely influence composite properties. However, currently used experimental protocols do not supply sufficient information even to estimate the relative influence as well as interplay among different structural features quantitatively. We may conclude, however, that XRD and TEM alone are not sufficient for the characterization of nanocomposites with a complex structure.Possible network formation of silicate sheets at small clay and large MAPP content.magnified imagePossible network formation of silicate sheets at small clay and large MAPP content.
Temperature‐Sensitive Hydrogel Pattern by Electron‐Beam Lithography
Authors: Schmidt Thomas , Mönch Jens Ingolf , Arndt Karl‐Friedrich 
Published: July 2006

AbstractSummary: Cross‐linking of water‐soluble polymers by high‐energy irradiation provides a clean method for the synthesis of hydrogels. Some applications of stimuli‐sensitive polymers need different patterns in the micro‐ and submicrometer range on a supporting material. A dry layer of poly(vinyl methyl ether) on a Si‐wafer was cross‐linked and patterned by irradiation with the electron beam of a modified electron microscope. The patterns in the micro‐ and submicrometer range show good adhesion on the supporting material without adhesion promoter. The deformation and the elastic behavior of the pattern were tested by AFM. The formed gel structures were sensitive against changes in environmental condition. This offers a wide range of applications.AFM image of the logo “Technische Universität Dresden” generated by line‐irradiation.magnified imageAFM image of the logo “Technische Universität Dresden” generated by line‐irradiation.
Relationships Between Birefringence of Constituent Fibers and Properties of Thermally Bonded Nonwovens
Authors: Wang Xiao Yan , Gong Rong Hua 
Published: July 2006

AbstractSummary: Three‐dimensional nonwoven fabrics have been produced using a newly developed air‐laid web forming and through‐air thermal‐bonding process directly from commercial PP/polyester (sheath/core) bi‐component staple fibers. Following the previous study on the morphology and structure of constituent fibers, this paper reports the breaking force and abrasion resistance of the fabrics. Results indicate that the relationships between both the breaking strength and abrasion resistance of the samples, and the thermal‐bonding process conditions are similar to each other. The appropriate thermal‐bonding temperature and dwell time are critical for achieving fabrics with high breaking strength and abrasion resistance. Such relationships are inconsistent with those between the tensile strength of the constituent fiber reflected by the birefringence and the thermal‐bonding process conditions. The birefringence of the constituent fiber appears to decrease with increasing thermal‐bonding temperature and dwell time. These results provide evidence that both the breaking force and abrasion resistance for the thermally bonded nonwoven fabrics are governed not only by the mechanical properties of constituent fibers, but also by the bonding properties between the fibers.Abrasion mass loss and breaking force of fabric and birefringence of constituent fiber for the thermally bonded nonwoven samples as functions of the dwell time.magnified imageAbrasion mass loss and breaking force of fabric and birefringence of constituent fiber for the thermally bonded nonwoven samples as functions of the dwell time.
Preparation and Characterization of Hybrid Chitosan/Acrylic Resin Emulsions and Their Films
Authors: Wada Tamaki , Uragami Tadashi 
Published: July 2006

AbstractSummary: Solutions containing chitosan of different molecular weights and several acidic monomers were prepared under various aging conditions. Hybrid chitosan/acrylic resin emulsions were prepared from these solutions by emulsion polymerization. The viscosities of the hybrid chitosan/acrylic resin emulsions were influenced significantly by the molecular weight of chitosan, the acidic monomer used, and the aging conditions. DSC and FT‐IR spectroscopy of the hybrid chitosan/acrylic resin films indicated that chitosan was well distributed in the films. The water absorption and formaldehyde adsorption abilities of the acrylic resin films prepared with chitosan were higher than the corresponding films prepared without chitosan, and they increased with increasing molecular weight of the chitosan. The morphology of these films, studied by TEM, revealed that the distribution of chitosan in the hybrid chitosan/acrylic resin emulsion was dependent on the molecular weight of chitosan, the acidic monomer used, and the aging conditions.Chitosan salts with acrylic acid (R = CHCH2), methacrylic acid (R = C(CH3)CH2) and itaconic acid (R = CH2(COOH)CCH2).magnified imageChitosan salts with acrylic acid (R = CHCH2), methacrylic acid (R = C(CH3)CH2) and itaconic acid (R = CH2(COOH)CCH2).