bluuebunny/crossref_metadata_2025 huggingface dataset:
Preservation of reliability classes under the formation of coherent systems
Authors: Navarro Jorge , del Águila Yolanda , Sordo Miguel A. , Suárez‐Llorens Alfonso
Published: June 2013

The preservation of reliability aging classes under the formation of coherent systems is a relevant topic in reliability theory. Thus, it is well known that the new better than used class is preserved under the formation of coherent systems with independent components. However, surprisingly, the increasing failure rate class is not preserved in the independent and identically distributed case, that is, the components may have the (negative) aging increasing failure rate property, but the system does not have this property. In this paper, we study conditions for the preservation of the main reliability classes under the formation of general coherent systems. These results can be applied both for systems with independent or dependent components. We consider both the case of systems with identically distributed components and the case of systems with components having different distributions. Copyright © 2013 John Wiley & Sons, Ltd.
Zur Erweiterung der grafischen Statik in die 3. Dimension
Authors: Schrems Maximilian , Kotnik Toni
Published: June 2013

Im 19. Jahrhundert wurden grafische Methoden – 1866 von Carl Culmann als “Graphische Statik” systematisiert und publiziert – dazu benutzt, den Zusammenhang zwischen geometrischer Form und innerem Kräftefluss genauer zu untersuchen. Diese Methoden wurden mehr und mehr durch analytische Verfahren ersetzt, da in den aufstrebenden Ingenieurwissenschaften die leichter zu verarbeitende numerische Berechnung, in Kombination mit physikalischen Experimenten, an Bedeutung gewann, wodurch ein Bedürfnis nach numerischer “Präzision” bestand. Heutzutage können mithilfe von digitalen Werkzeugen auch komplexe dreidimensionale Geometrien dargestellt werden und somit taucht in der Architektur wieder das Interesse an der grafischen Statik auf. Dieses Interesse gründet auf der einfachen und mathematisch präzisen Herangehensweise der grafischen Statik, mit deren Hilfe der Zusammenhang von Kraft und Form diskutiert werden kann. Die laufende Forschung an der ETH Zürich zur Erweiterung der grafischen Statik in die 3. Dimension hat einerseits das Ziel, Limitierungen des zweidimensionalen Culmann'schen Ansatzes zu überwinden, andererseits eine vektorgeometrische, visuelle und damit synthetische Methode zur Untersuchung von dreidimensionalen Kräfteflüssen zu generieren. Dabei ist wichtig, dass der Fokus auf der Betrachtung der Resultierenden und der Erforschung von deren Enstprechung im Raum liegt.

On the extension of graphical statics into the 3rd dimension

In the 19th century methods of graphical statics – systematized and published by Carl Culmann in 1866 – were used to study in more detail the relationship between form and the flow of forces. Historically, they were superseded by analytical methods, due to the relative ease of numerical calculations and the increasing importance of experimentation by the developing discipline of engineering with its need for precision. Nowadays, however, with the availability of digital tools and the possibility of visualization of geometry in 3D space, there is a re‐emerging interest in graphic statics within the design process. Therefore, a visual dialogue about the flow of forces based on graphic statics should be fostered because these methods offer a simple yet precise way to discuss the geometrical dependency of form and forces. The research is part of an ongoing process to extend the methods of graphic statics to the third dimension in order to overcome, on the one hand, some of the limitations of Culmann's approach and on the other, to generate a geometrical, visual and thus synthetic method for exploring 3D equilibrium. The focus is on the resultant and on the likeness in space.
Fallstudie zur seismischen Auslegung der Stationen und der Tunnel einer U‐Bahnlinie in weichem Boden
Authors: Vrettos Christos , Chen Dong , Rizos Dimitris
Published: June 2013

Die seismische Auslegung von unterirdischen Bauwerken wird durch Verformung des Bodens und die Boden‐Bauwerk‐Interaktion gesteuert, wobei die kinematischen Effekte gegenüber den Trägheitseffekten dominieren. Verfügbare Methoden der numerischen Berechnung für die 2D‐Antwort in Querrichtung werden für eine Fallstudie, welche die Stationen und die Tunnelröhren einer U‐Bahnlinie in einem Erdbebengebiet betrifft, angewandt. Zwei Kontinuum‐Ansätze werden betrachtet: a) dynamische Finite‐Elemente‐Methode im Zeitbereich und b) quasi‐statische Methode. Schnittkräfte in den Bauwerken werden für ein typisches Erdbeben bestimmt, sie werden gegenübergestellt und mit Ergebnissen aus der statischen Berechnung der Baugrube und der Tunnelröhren verglichen.

Case study on the seismic design of the stations and the tunnels of a subway line in soft ground

The seismic design of underground structures is controlled by ground deformation and soil‐structure interaction, whereby kinematic effects dominate over inertia effects. Available methods of numerical analysis for the 2D response in the transverse direction are applied for a case study referring to the stations and the inter‐station tunnels of a metro‐line in a seismic region. Two continuum approaches are considered: a) time‐domain dynamic finite‐element and b) quasi‐static analyses. Sectional forces are determined for a typical earthquake shaking. They are compared against each other and to those obtained from the static design of the excavation support.
Die neue indische Antarktis‐Forschungsstation
Authors: Brunn Benjamin , Nitschke Andreas , Schramm Thomas
Published: June 2013

Die erste Herausforderung dieses außergewöhnlichen Projektes bestand im Zusammenführen aller Beteiligten: Den indischen Bauherrn, die norwegischen und deutschen Baufirmen und die Autoren als Generalplaner sowie Bauüberwacher und Kopf eines Teams mit zwei Sub‐Planern für Architektur und Haustechnik. Die zweite Herausforderung war die Antarktis. Planungsgrundlagen, die sonst aus Normen entnommen werden können, mussten zunächst ermittelt werden, z.B. Wind‐ und Schneelasten sowie Eisbedingungen. Alle Materialien mussten für den Einsatz im antarktischen Klima geeignet sein. Eine dritte Herausforderung war die Logistik. Alle Komponenten mussten in 20‐Fuß‐Container passen, die für Hubschraubertransporte nicht zu schwer sein durften. Der Zeitraum für den Bau während des antarktischen Sommers ist sehr kurz. Alle Randbedingungen spiegeln sich im Gebäude wider. Form und Materialien sind auf Ort, Klima und Logistik abgestimmt. Das dreigeschossige Containergebäude mit 52 m Länge und 30 m Breite kann 47 Personen beherbergen und enthält Labore, eine Garage, eine Werkstatt, Wohn‐ und Büroräume, ein Kino, einen Sportraum, eine Bibliothek, einen Speiseraum und einen Salon mit Blick über das Meer. Dieses durch die indische Regierung veranlasste Projekt eines hochmodernen Gebäudes konnte erfolgreich durch eine enge Zusammenarbeit internationaler Teilnehmer sowie deren Leidenschaft für das gemeinsame Ziel, dem gegenseitigen Vertrauen zueinander und dem Respekt voreinander und vor der Natur realisiert werden.

New Indian Research Station at Larsemann Hills, Antarctica

The first challenge of this extraordinary project was the integration of all involved parties: The Indian client, the Norwegian and German construction companies and the authors as general planners and site supervisors being head of a team with two sub‐consultants for architecture and building services. The second challenge was Antarctica. Planning bases usually taken from standards had to be ascertained, e.g. wind loads, snow and ice conditions. All materials needed to be suitable for Antarctic climate conditions. A third challenge was the logistics. All components had to fit into 20‐foot containers, which in turn required being light enough for helicopter transport. The time frame for construction during the Antarctic summer is short. All boundary conditions are reflected in the building; form and material are suited for the location, climate and logistics. The three‐storey container building, which is 52 m long and 30 m wide, can accommodate 47 people and contains laboratories, a garage, workshop, living and office areas, a cinema, fitness room, library, dining hall and lounge with a view of the ocean. The Indian government initiated this state‐of‐the‐art project, which was successfully completed through the co‐operation of international participants with passion, faith and respect for each other and nature.
Deutschlands älteste Betonbrücken
Authors: Veihelmann Karen , Holzer Stefan M.
Published: June 2013

Die Wurzeln des modernen Betonbaus werden in der Literatur meist stiefmütterlich behandelt. Über einige Eckdaten, die von Publikation zu Publikation kopiert werden, gehen die Vorbemerkungen meist nicht hinaus. Im Rahmen eines Forschungsprojektes an der Universität der Bundeswehr in München/Neubiberg wird durch die Autoren diese Frühzeit genauer beleuchtet. Im Zuge der Arbeiten konnte Deutschlands älteste Betonbrücke ausfindig gemacht werden: Die Brücke über die Lenne bei Vorwohle. Die Brücke, deren Tragwerk bis heute nahezu unbeschädigt erhalten ist, wird nachfolgend beschrieben und in den Zusammenhang mit zwei beinahe bauzeitgleichen Schwesterbauwerken gestellt.

Germany's first concrete bridges

The early history of unreinforced concrete has received little attention until now. However, significant engineering concrete structures have been constructed long before the advent of reinforced concrete in bridge building at the end of the 19th century. In this short notice, the authors present three small arch bridges dating back to 1877/1878 which are probably Germany's oldest concrete bridges.
Is LMNB1 a susceptibility gene for neural tube defects in humans?
Authors: Robinson Alexis , Partridge Darren , Malhas Ashraf , De Castro Sandra C.P. , Gustavsson Peter , Thompson Dominic N. , Vaux David J. , Copp Andrew J. , Stanier Philip , Bassuk Alexander G. , Greene Nicholas D.E.
Published: June 2013

BACKGROUND

Lamins are intermediate filament proteins that form a major component of the nuclear lamina, a protein complex at the surface of the inner nuclear membrane. Numerous clinically diverse conditions, termed laminopathies, have been found to result from mutation of LMNA. In contrast, coding or loss of function mutations of LMNB1, encoding lamin B1, have not been identified in human disease. In mice, polymorphism in Lmnb1 has been shown to modify risk of neural tube defects (NTDs), malformations of the central nervous system that result from incomplete closure of the neural folds.

METHODS

Mutation analysis by DNA sequencing was performed on all exons of LMNB1 in 239 samples from patients with NTDs from the United Kingdom, Sweden, and United States. Possible functional effects of missense variants were analyzed by bioinformatics prediction and fluorescence in photobleaching.

RESULTS

In NTD patients, we identified two unique missense variants that were predicted to disrupt protein structure/function and represent putative contributory mutations. Fluorescence loss in photobleaching analysis showed that the A436T variant compromised stability of lamin B1 interaction within the lamina.

CONCLUSION

The genetic basis of human NTDs appears highly heterogenous with possible involvement of multiple predisposing genes. We hypothesize that rare variants of LMNB1 may contribute to susceptibility to NTDs. Birth Defects Research (Part A) 97:398–402, 2013. © 2013 Wiley Periodicals, Inc.
Werkstoffgerechtes Konstruieren mit Hochleistungsbetonen
Authors: Schnell Jürgen , Kohlmeyer Christian , Bayer Dirk , Müller Frank
Published: June 2013

Hochleistungsbetone eröffnen neue Möglichkeiten für Gestaltung und Konstruktion. Der Beitrag schildert an der TU Kaiserslautern verfolgte Ansätze zu einem möglichst werkstoffgerechten Umgang mit diesem Material am Beispiel filigraner Bauteile mit angepassten Bewehrungs‐ und Fügetechniken.

Ein Ansporn für die fortwährende Suche nach neuen ingenieurtechnischen Lösungen, die auch gestalterische Optionen eröffnen, sind die unzähligen Entwürfe, mit denen Werner Sobek dem intelligenten und multifunktionalen Einsatz verschiedenster Materialien in oft hybrider Kombination im Bauwesen weltweit den Weg bereitet hat.

High‐performance concretes open up new possibilities for design and construction

This paper depicts the approaches pursued at the TU Kaiserslautern in order to facilitate an appropriate dealing with this material exemplified by filigree components with customized reinforcement and joining techniques.

An incentive for the continuous search for new technical solutions, that open up also creative options, are the countless designs with which Werner Sobek has paved worldwide the way for intelligent and multifunctional use of different materials in often hybrid combination in the construction industry.
Tragverhalten biege‐ und querkraftbeanspruchter Bauteile aus funktional gradiertem Beton
Authors: Herrmann Michael , Haase Walter
Published: June 2013

Die Gradierung von Betonbauteilen ermöglicht eine Anpassung des Bauteilinneren an das vorherrschende statische oder bauphysikalische Anforderungsprofil. Durch eine in bis zu drei Raumrichtungen kontinuierlich frei veränderbare Porosität lassen sich maßgeschneiderte Betonbauteile herstellen. Um das Potenzial der neuen Bauweise erschließen zu können, müssen das Tragverhalten untersucht und Bemessungsansätze entwickelt werden.

Nachfolgend werden die verwendeten Nachweise und die getroffenen Annahmen zur Auslegung von Bauteilen aus gradiertem Beton beschrieben. Der Einfluss des Gradientenlayouts und der verwendeten Bewehrungsmaterialien auf das Biegetragverhalten wurde in Bauteilversuchen ermittelt. Die Querkrafttragfähigkeit wurde in Abhängigkeit der Schubschlankeit untersucht und der Vergleich zur rechnerischen Tragfähigkeit nach Norm gezogen. Der vorliegende Aufsatz soll somit einen Beitrag zum Verständnis der Besonderheiten im Tragverhalten gradierter Betonbauteile darstellen.

Load bearing behaviour of functionally graded concrete components under flexural and shear stress

The grading of concrete components enables the adaptation of the internal material distribution according to static demands and requirements related to building physics. Customized elements can be fabricated by changing the concrete porosity continuously in three dimensions. In order to utilize the potential of this new construction method, the load bearing behaviour needs to be investigated and design methods need to be developed.

The following describes the analyses and assumptions that were applied for the design of graded concrete elements. The influence of the gradient layout and of the reinforcement type on the flexural load bearing behaviour was determined experimentally. The shear capacity was investigated as a function of the shear slenderness ratio and compared to the design values computed according to the national code. The present article is intended to aid the understanding of the specific characteristics of the load bearing behaviour of functionally graded concrete elements.
Evolution of sex differences in lifespan and aging: Causes and constraints
Authors: Maklakov Alexei A. , Lummaa Virpi
Published: June 2013

Why do the two sexes have different lifespans and rates of aging? Two hypotheses based on asymmetric inheritance of sex chromosomes (“unguarded X”) or mitochondrial genomes (“mother's curse”) explain sex differences in lifespan as sex‐specific maladaptation leading to increased mortality in the shorter‐lived sex. While asymmetric inheritance hypotheses equate long life with high fitness, considerable empirical evidence suggests that sexes resolve the fundamental tradeoff between reproduction and survival differently resulting in sex‐specific optima for lifespan. However, selection for sex‐specific values in life‐history traits is constrained by intersexual genetic correlations resulting in intra‐locus sexual conflict over optimal lifespan. The available data suggest that the evolution of sexual dimorphism only partially resolves these conflicts. Sexual conflict over optimal trait values, which has been demonstrated in model organisms and in humans, is likely to play a key role in shaping the evolution of lifespan, as well as in maintaining genetic variation for sex‐specific diseases.
Chemistry and Biology of the Potent Endotoxin from a Burkholderia dolosa Clinical Isolate from a Cystic Fibrosis Patient
Authors: Lorenzo Flaviana Di , Sturiale Luisa , Palmigiano Angelo , Fazio Luigi Lembo‐ , Paciello Ida , Coutinho Carla P. , Sá‐Correia Isabel , Bernardini MariaLina , Lanzetta Rosa , Garozzo Domenico , Silipo Alba , Molinaro Antonio
Published: June 2013

This is the first report of the chemical and biological properties of the lipooligosaccharide (LOS) endotoxin isolated from Burkholderia dolosa IST4208, an isolate recovered from a cystic fibrosis (CF) patient in a Portuguese CF center. B. dolosa is a member of the Burkholderia cepacia complex, a group of closely related species that are highly problematic and opportunistic pathogens in CF. B. dolosa infection leads to accelerated loss of lung function and decreased survival. The structural determination of its endotoxin was achieved using a combination of chemistry and spectroscopy, and has revealed a novel endotoxin structure. The purified LOS was tested for its immunostimulatory activity on human HEK 293 cells expressing TLR‐4, MD‐2, and CD‐14. In these assays, the LOS showed strong proinflammatory activity.
Recyclable Catalyst Reservoir: Oxidation of Alcohols Mediated by Noncovalently Supported Bis(imidazolium)‐Tagged 2,2,6,6‐Tetramethylpiperidine 1‐Oxyl
Authors: Beejapur Hazi Ahmad , Giacalone Francesco , Noto Renato , Franchi Paola , Lucarini Marco , Gruttadauria Michelangelo
Published: June 2013

Bis(imidazolium)‐tagged 2,2,6,6‐tetramethylpiperidine 1‐oxyl (TEMPO) catalysts were adsorbed on different supports such as silica gel, silica gel modified with highly cross‐linked polymeric imidazolium networks, and highly cross‐linked polymeric imidazolium networks entrapping magnetic particles. These systems provided a convenient tool for the oxidation of both primary and secondary alcohols working as recyclable reservoirs for the bis(imidazolium)‐tagged TEMPO catalysts. By using EPR spectroscopy it was demonstrated that the catalyst was released as the corresponding oxoammonium salt in the solution during the recycling step, thus promoting the oxidative process in a homogeneous fashion. After solvent removal, the catalyst was readsorbed on the support allowing an easy recovery and recycle of the catalytic material up to 13 consecutive cycles with no loss in activity. The bis(imidazolium)‐tagged TEMPO catalyst could be used in only 1 mol % both for the oxidation of benzylic and aliphatic alcohols. The catalytic material was highly recyclable if used on silica or imidazolium‐modified silica gel in 10 mol % loading. Loading could be scaled down to 1 mol % and the catalyst proved to be recyclable up to 8 cycles only with imidazolium‐modified silica gel. Such a “catalyst‐sponge‐like” system permits to combine the benefits of homogeneous and heterogeneous catalysis.
Photocatalytic Hydrogen Evolution with a Self‐Assembling Reductant–Sensitizer–Catalyst System
Authors: Natali Mirco , Argazzi Roberto , Chiorboli Claudio , Iengo Elisabetta , Scandola Franco
Published: June 2013

A noble‐metal‐free system for photochemical hydrogen production is described, based on ascorbic acid as sacrificial donor, aluminium pyridyl porphyrin as photosensitizer, and cobaloxime as catalyst. Although the aluminium porphyrin platform has docking sites for both the sacrificial donor and the catalyst, the resulting associated species are essentially inactive because of fast unimolecular reversible electron‐transfer quenching. Rather, the photochemically active species is the fraction of sensitizer present, in the aqueous/organic solvent used for hydrogen evolution, as free species. As shown by nanosecond laser flash photolysis experiments, its long‐lived triplet state reacts bimolecularly with the ascorbate donor, and the reduced sensitizer thus formed, subsequently reacts with the cobaloxime catalyst, thereby triggering the hydrogen evolution process. The performance is good, particularly in terms of turnover frequencies (TOF=10.8 or 3.6 min−1, relative to the sensitizer or the catalyst, respectively) and the quantum yield (Φ=4.6 %, that is, 9.2 % of maximum possible value). At high sacrificial donor concentration, the maximum turnover number (TON=352 or 117, relative to the sensitizer or the catalyst, respectively) is eventually limited by hydrogenation of both sensitizer (chlorin formation) and catalyst.
Biomimetic Ion Nanochannels as a Highly Selective Sequential Sensor for Zinc Ions Followed by Phosphate Anions
Authors: Han Cuiping , Su Haiyan , Sun Zhongyue , Wen Long , Tian Demei , Xu Kai , Hu Junfeng , Wang Aming , Li Haibing , Jiang Lei
Published: June 2013

A novel biomimetic ion‐responsive multi‐nanochannel system is constructed by covalently immobilizing a metal‐chelating ligand, 2,2′‐dipicolylamine (DPA), in polyporous nanochannels prepared in a polymeric membrane. The DPA‐modified multi‐nanochannels show specific recognition of zinc ions over other common metal ions, and the zinc‐ion‐chelated nanochannels can be used as secondary sensors for HPO42− anions. The immobilized DPA molecules act as specific‐receptor binding sites for zinc ions, which leads to the highly selective zinc‐ion response through monitoring of ionic current signatures. The chelated zinc ions can be used as secondary recognition elements for the capture of HPO42− anions, thereby fabricating a sensing nanodevice for HPO42− anions. The success of the DPA immobilization and ion‐responsive events is confirmed by measurement of the X‐ray photoelectron spectroscopy (XPS), contact angle (CA), and current–voltage (I–V) characteristics of the systems. The proposed nanochannel sensing devices display remarkable specificity, high sensitivity, and wide dynamic range. In addition, control experiments performed in complex matrices suggest that this sensing system has great potential applications in chemical sensing, biotechnology, and many other fields.
Ultrathin SnO2 Scaffolds for TiO2‐Based Heterojunction Photoanodes in Dye‐Sensitized Solar Cells: Oriented Charge Transport and Improved Light Scattering
Authors: Yang Shuang , Hou Yu , Xing Jun , Zhang Bo , Tian Feng , Yang Xiao Hua , Yang Hua Gui
Published: June 2013

In this paper, band‐structure matching strategy of a TiO2‐based heterojunction within which electrons can be collected from TiO2 nanoparticles and transported rapidly in the bulk structure is reported. On the basis of the band‐structure analysis of different TiO2‐based heterostructures, focus was directed to the SnO2 nanosheet because of its appropriate band position and high electrical conductivity. Through a systematic investigation of the incorporation of ultrathin SnO2 nanosheet scaffolds for TiO2‐based photoanodes in dye‐sensitized solar cells (DSCs), we propose an anisotropy “constrained random walk” model to describe the controlled electron transit process. In this system, electrons are transferred orientedly overall, as well as randomly locally, leading to a significant reduction in the charge diffusion route compared to the conventional isotropic “random walk” model. In brief, the 2D ultrathin nanosheets provide rapid transit pathways and improved light‐scattering centers, which can ensure a sufficient amount of dye loading and slow recombination. An overall light‐to‐electricity conversion efficiency as high as 8.25 % is achieved by embedding the appropriate amount of SnO2 scaffold in a TiO2‐based photoanode.
Degradation Products from Naturally Aged Paper Leaves of a 16th‐Century‐Printed Book: A Spectrochemical Study
Authors: Bronzato Maddalena , Calvini Paolo , Federici Carlo , Bogialli Sara , Favaro Gabriella , Meneghetti Moreno , Mba Miriam , Brustolon Marina , Zoleo Alfonso
Published: June 2013

In this work, we present a wide‐range spectrochemical analysis of the degradation products from naturally aged paper. The samples obtained from wash waters used during the de‐acidification treatment of leaves from a 16th‐century‐printed book were analysed through NMR, IR, Raman UV/Vis, EPR and X‐ray fluorescence (XRF) spectroscopy and HPLC‐MS and inductively coupled plasma (ICP) analysis. By these methods we also studied some of the previous samples treated by acidification (sample AP) and catalytic hydrogenation (sample HP). Crossing all the data, we obtained precise indications about the main functional groups occurring on the degraded, water‐soluble cellulose oligomers. These results point out that the chromophores responsible for browning are conjugated carbonyl and carboxyl compounds. As a whole, we show that the analysis of wash waters, used in the usual conservation treatments of paper de‐acidification, gives much valuable information about both the conservation state of the book and the degradation reactions occurring on the leaves, due to the huge amount of cellulose by‐products contained in the samples. We propose therefore this procedure as a new very convenient general method to obtain precious and normally unavailable information on the cellulose degradation by‐products from naturally aged paper.
ChemInform Abstract: Structure Prediction of Binary Pernitride MN2 Compounds (M: Ca, Sr, Ba, La, and Ti)
Authors: Kulkarni A. , Schoen J. C. , Doll K. , Jansen M.
Published: June 2013

Based on ab initio calculations at various pressures meta(stable) modifications of CaN2, LaN2, and TiN2 are predicted.
ChemInform Abstract: Structural and Physical Properties Diversity of New CaCu5‐Type Related Europium Platinum Borides.
Authors: Salamakha Leonid , Bauer Ernst , Hilscher Gerfried , Michor Herwig , Sologub Oksana , Rogl Peter , Giester Gerald
Published: June 2013

EuPt4B (I), Eu3Pt7B2 (II), and Eu5Pt18B6‐x (III) are synthesized by arc melting of the constituent elements using excess Eu due to its high volatility.
ChemInform Abstract: Anomalous Manganese Activation of a Pyrophosphate Cathode in Sodium Ion Batteries: A Combined Experimental and Theoretical Study.
Authors: Park Chan Sun , Kim Heejin , Shakoor Rana A. , Yang Eunjeong , Lim Soo Yeon , Kahraman Ramazan , Jung Yousung , Choi Jang Wook
Published: June 2013

Na2MnP2O7 is synthesized by solid state reaction of stoichiometric amounts of Na2CO3, (NH4)2HPO4, and MnO2 (Ar, 500 °C, 9 h).
ChemInform Abstract: Boron Carbides as Efficient, Metal‐Free, Visible‐Light‐Responsive Photocatalysts.
Authors: Liu Jikai , Wen Shuhao , Hou Yang , Zuo Fan , Beran Gregory J. O. , Feng Pingyun
Published: June 2013

The boron carbides B4.3C (commercial B4C, which is in fact B4.3C with graphite impurities) and B13C2 (prepared by arc melting of B and graphite) perform photocatalytic H2 evolution and photoelectrochemical water reduction under visible light.
ChemInform Abstract: [Li(XeF2)n](AF6) (A: P, As, Ru, Ir), the First Xenon(II) Compounds of Lithium. Synthesis, Raman Spectrum, and Crystal Structure of [Li(XeF2)3](AsF6).
Authors: Tavcar Gasper , Zemva Boris
Published: June 2013

A screening of the reactions of MAF6 (M: alkali metals; A: P, As, V, Ru, Ir, Sb, Nb, Ta) with XeF2 in anhydrous HF leads to the isolation of only [Li(XeF2)n](AF6) (A: As, Ru, Ir) coordination compounds.
ChemInform Abstract: Cubic Cesium Hydrogen Silicododecatungstate with Anisotropic Morphology and Polyoxometalate Vacancies Exhibiting Selective Water Sorption and Cation‐Exchange Properties.
Authors: Ogasawara Yoshiyuki , Uchida Sayaka , Maruichi Toshiaki , Ishikawa Ryo , Shibata Naoya , Ikuhara Yuichi , Mizuno Noritaka
Published: June 2013

Cs3.0H0.3 [SiW12O40]0.83·3H2O with a cubic cell (space group Pn$\bar 3$m) and anion vacancies is synthesized by addition of an aqueous solution of CsNO3 to an aqueous solution of H4SiW12O40 (343 K, 72 h, yield given in g).
ChemInform Abstract: One‐Pot versus Sequential Reactions in the Self‐Assembly of Gigantic Nanoscale Polyoxotungstates.
Authors: Gao Jing , Yan Jun , Beeg Sebastian , Long De‐Liang , Cronin Leroy
Published: June 2013

Compound (III) gives rise to a series of giant nanomolecular species.
ChemInform Abstract: Comparisons of Plutonium, Thorium, and Cerium Tellurite Sulfates.
Authors: Lin Jian , Cross Justin N. , Diwu Juan , Meredith Nathan A. , Albrecht‐Schmitt Thomas E.
Published: June 2013

Pu(TeO3)(SO4) (I), Ce2(Te2O5)(SO4)2 (II), and Th(TeO3)(SO4) (III) are prepared by hydrothermal reaction of weapons‐grade PuCl3, CeCl3 (CeO2), or Th(OH)4, resp.
ChemInform Abstract: Nanoscale Control of Polyoxometalate Assembly: A {Mn8W4} Cluster within a {W36Si4Mn10} Cluster Showing a New Type of Isomerism.
Authors: Winter Ross S. , Yan Jun , Busche Christoph , Mathieson Jennifer S. , Prescimone Alessandro , Brechin Euan K. , Long De‐Liang , Cronin Leroy
Published: June 2013

K10Li14 [W36Si4O136Mn10(OH)4 (H2O)8] ·60H2O (I) and the isomeric cluster K10Li13.5Mn0.25 [W36Si4O136Mn10(OH)4 (H2O)8]·60H2O (II), which differs only in the positions of the Mn centers captured in the precursor fragments, are synthesized by reaction of K8[γ‐SiW10O36] with MnCl2 in an aqueous LiCl solution under ambient conditions (pH 8.3, 13% yield).
ChemInform Abstract: Bis(tetrasulfato)palladate, [Pd(S4O13)2]2‐.
Authors: Bruns Joern , Kluener Thorsten , Wickleder Mathias S.
Published: June 2013

K2[Pd(S4O13)2] is synthesized in nearly quantitative yield by reaction of K2PdCl4 and SO3 (generated from oleum and P4O10) at 120 °C for 2 d.
ChemInform Abstract: Highly Enantioselective Three‐Component Direct Mannich Reactions of Unfunctionalized Ketones Catalyzed by Bifunctional Organocatalysts.
Authors: Guo Qunsheng , Zhao John Cong‐Gui
Published: June 2013

A series of N‐tosylated β‐aminoketones (IV) is prepared with high stereoselectivity by a three‐component Mannich reaction of ketones (I) with aryl aldehydes (II) and p‐toluenesulfonamide.
ChemInform Abstract: Conjugate Addition of Indoles and Pyrroles to Dihydronitronaphthalenes in Water: Synthesis of 3,4‐Fused Tetrahydro‐β‐carbolines.
Authors: Basu Sourav , et al. et al.
Published: June 2013

The products of the conjugate addition can be used for further transformations: the halogen moieties undergo Suzuki couplings, and the nitro group can be reduced and applied in a Pictet—Spengler cyclization to yield fused β‐carbolines (XVI).
ChemInform Abstract: Chemo/Regioselective Aza‐Michael Additions of Amines to Conjugate Alkenes Catalyzed by Polystyrene‐Supported AlCl3.
Authors: Dai Liyan , Zhang Yi , Dou Qianqian , Wang Xiaozhong , Chen Yingqi
Published: June 2013

Polystyrene‐supported aluminum chloride is used as an efficient catalyst for Aza‐Michael additions of various primary and secondary amines with conjugate alkenes (II).
ChemInform Abstract: Multifunctionalization of Alkenes via Aerobic Oxynitration and sp3 C—H Oxidation.
Authors: Taniguchi Tsuyoshi , Sugiura Yuki , Hatta Takashi , Yajima Atsushi , Ishibashi Hiroyuki
Published: June 2013

The catalyst‐free aerobic oxynitration of different substrates is reported [13 examples].
ChemInform Abstract: Asymmetric Hydrogenation Using Rhodium Complexes Generated from Mixtures of Monodentate Neutral and Anionic Phosphorus Ligands.
Authors: Frank Dominik J. , Franzke Axel , Pfaltz Andreas
Published: June 2013

This is a study concerning ligand effects and catalyst formation in the asymmetric hydrogenation of olefins.
ChemInform Abstract: Nickel‐Catalyzed Regio‐ and Diastereoselective Intermolecular Three‐Component Coupling of Oxabicyclic Alkenes with Alkynes and Organoboronic Acids.
Authors: Mannathan Subramaniyan , Cheng Chien‐Hong
Published: June 2013

A highly regio‐ and diastereoselective three‐component reductive coupling reaction affording exo‐5,6‐disubstituted 7‐oxanorbornene derivatives in good to excellent yields is reported.
ChemInform Abstract: Regio‐ and Stereoretentive Synthesis of Branched, Linear (E)‐ and (Z)‐Allyl Fluorides from Allyl Carbonates under Ir‐Catalysis.
Authors: Benedetto Elena , Tredwell Matthew , Hollingworth Charlotte , Khotavivattana Tanatorn , Brown John M. , Gouverneur Veronique
Published: June 2013

The reaction products are isolated with very high degrees of regioselectivity (<15:1) and E/Z conservation (<18:1).
ChemInform Abstract: Sakurai Reaction of 3,3‐Bis(silyl) Silyl Enol Ethers with Acetals Involving Selective Desilylation of the Geminal Bis(silane). Concise Synthesis of Nematocidal Oxylipid.
Authors: Li Linjie , Ye Xincui , Wu Ya , Gao Lu , Song Zhenlei , Yin Zhiping , Xu Yongjin
Published: June 2013

The Lewis acid‐promoted reaction of 3,3‐bis(silyl) silyl enol ethers with various acetals is studied.
ChemInform Abstract: Synthetic Applications of 2‐(Azidomethyl)allyltrimethylsilane.
Authors: Ferrini Serena , Cini Elena , Taddei Maurizio
Published: June 2013

The stable azide (I) is successfully applied to thermal cycloadditions with alkenes to give triazoline (III) or different types of aziridines.
ChemInform Abstract: Tin(IV) Chloride Promoted Reaction of Oxiranes with Hydrogen Peroxide.
Authors: Yan Xing , Qiao Chunhua , Guo Zhongwu
Published: June 2013

Treatment of oxiranes with hydrogen peroxide and catalytic amounts of SnCl4 yields the corresponding β‐hydroxy peroxides.
ChemInform Abstract: Palladium Catalyzed Reaction of ortho‐Functionalized Aryl Iodides with Bicyclic Hydrazines: Facile Route Toward Heteroannulated Cyclopentenes and Azabicycles.
Authors: John Jubi , Rajan Rani , Chand S. Sarath , Prakash Praveen , Joseph Nayana , Suresh Eringathodi , Radhakrishnan K. V.
Published: June 2013

Depending on the reaction conditions either 3,4‐disubstituted cyclopentenes or cyclopentene‐fused heterocycles are obtained by the presented method.
ChemInform Abstract: Phosphine‐Catalyzed [3 + 2] Annulation of α‐Substituted Allenoates with Ester‐Activated α,β‐Unsaturated Imines: A Novel Variation of the Lu [3 + 2] Cycloaddition Reaction.
Authors: Tian Junjun , He Zhengjie
Published: June 2013

The title reaction affords highly functionalized cyclopentenes (III) bearing one all‐carbon centre.
ChemInform Abstract: ZrCl2 (η‐C5Me5)2‐AlHCl2· (THF)2: Efficient Hydroalumination of Terminal Alkynes and Cross‐Coupling of the Derived Alanes.
Authors: Andrews Philip , Latham Christopher M. , Magre Marc , Willcox Darren , Woodward Simon
Published: June 2013

Stabilized AlHCl2·(THF)2 hydroaluminates terminal alkynes with excellent chemo‐, regio‐, and stereoselectivity.
ChemInform Abstract: Synthesis and Photophysical Properties of Tetra‐ and Pentaalkynylfluorobenzenes by Sonogashira Reactions of Novel Iodofluorobenzenes.
Authors: Sharif Muhammad , Maalik Aneela , Reimann Sebastian , Iqbal Jamshed , Patonay Tamas , Spannenberg Anke , Villinger Alexander , Langer Peter
Published: June 2013

A series of 25 novel fluorescent tetra‐ and pentaalkynylfluorobenzenes is prepared.
ChemInform Abstract: Improved Synthesis of Tertiary Propargyl Alcohols by the Favorskii Reaction of Alkyl Aryl (Hetaryl) Ketones with Acetylene.
Authors: Shmidt E. Yu. , Bidusenko I. A. , Protsuk N. I. , Mikhaleva A. I. , Trofimov B. A.
Published: June 2013

Tertiary propargyl alcohols bearing aryl or heteroaryl substituents are readily accessible from the corresponding ketones and acetylene under atmospheric pressure using a superbasic system.
ChemInform Abstract: An Examination of the Palladium/Mor‐DalPhos Catalyst System in the Context of Selective Ammonia Monoarylation at Room Temperature.
Authors: Alsabeh Pamela G. , Lundgren Rylan J. , McDonald Robert , Johannsson Seechurn Carin C. C. , Colacot Thomas J. , Stradiotto Mark
Published: June 2013

A wide range of aryl‐ and heteroaryl‐chlorides and tosylates are converted to the corresponding amines.
ChemInform Abstract: A Mild and Highly Efficient Conversion of Arylboronic Acids into Phenols by Oxidation with MCPBA.
Authors: Chen Dong‐Song , Huang Jing‐Mei
Published: June 2013

The simple protocol allows the conversion under metal‐, ligand‐, and base‐free conditions.
ChemInform Abstract: A Mild PPTS‐Catalyzed Acetalization of α,β‐Unsaturated Aldehydes: The First Single‐Step Protocol Towards Benzylic Acetals.
Authors: Boese Dietrich , Luebcke Marvin , Pietruszka Joerg
Published: June 2013

A convenient method for the preparation of the target compounds, otherwise difficult to prepare, is developed.
ChemInform Abstract: Copper(II)‐Catalyzed Enantioselective Fluorination of β‐Keto Esters Using Chiral Spiro Oxazoline Ligands.
Authors: Narayama Akira , Shibatomi Kazutaka , Soga Yoshinori , Muto Tsubasa , Iwasa Seiji
Published: June 2013

Lewis acid catalysts, generated in situ from Cu(O‐Tf)2 and axially chiral ligands (I), are successfully employed for various transformations which proceed with good enantioselectivities.
ChemInform Abstract: (S)‐Selective MenD Variants from Escherichia coli Provide Access to New Functionalized Chiral α‐Hydroxy Ketones.
Authors: Westphal Robert , Waltzer Simon , Mackfeld Ursula , Widmann Michael , Pleiss Juergen , Beigi Maryam , Mueller Michael , Rother Doerte , Pohl Martina
Published: June 2013

The first MenD variants from E.
ChemInform Abstract: Palladium‐Catalyzed Hydroarylation of Diazoacetic Ester.
Authors: Titanyuk Igor D. , Beletskaya Irina P.
Published: June 2013

The arylation with iodides is followed by hydrogenation with a hydride anion generated from formic acid.
ChemInform Abstract: Highly Regioselective Ring‐Opening of Aziridines with Arenesulfinates on Water: A Facile Access to β‐Amino/Vinyl Sulfones.
Authors: Chawla Ruchi , Singh Atul K. , Yadav Lal Dhar S.
Published: June 2013

Synthesis of β‐amino sulfones is achieved from readily available aziridines and sodium sulfinates in water.
ChemInform Abstract: Reversible Aryl Migrations in Metalated Ureas: Controlled Inversion of Configuration at a Quaternary Carbon Atom.
Authors: Tetlow Daniel J. , Vincent Mark A. , Hillier Ian H. , Clayden Jonathan
Published: June 2013

Deprotonation of N‐vinyl ureas carrying an N‐aryl substituent with strong bases leads to migration of the N‐aryl group from N to C.
ChemInform Abstract: Rapid and Effective Synthesis of Diarylsulfur Diimides from Substituted Anilines and Sulfur Monochloride.
Authors: Konstantinova Lidia S. , Lysov Kirill A. , Rakitin Oleg A.
Published: June 2013

The proposed intermediate (III) can be isolated at lower temperature and independently converted to sulfur diimides under similar conditions.
ChemInform Abstract: Polyarylene Synthesis by Cross‐Coupling with HOMSi Reagents.
Authors: Shimizu Kenta , Minami Yasunori , Nakao Yoshiaki , Ohya Ken‐ichiro , Ikehira Hideyuki , Hiyama Tamejiro
Published: June 2013

Cross‐coupling reactions of dibromoarenes (I), (IV), and (VI) with HOMSi reagents (organo[2‐hydroxymethylphenyl]dimethylsilanes) (II) or alternatively bromoarenes (IX) and arylene‐bisHOMSi reagents, e.g. (VIII), afford ter‐ or quaterarenes (III), (V), (VII), and (X), resp., in high yields.
ChemInform Abstract: Preparation of Functionalized Organoindium Reagents by Means of Magnesium Insertion into Organic Halides in the Presence of InCl3 at Room Temperature.
Authors: Bernhardt Sebastian , Shen Zhi‐Liang , Knochel Paul
Published: June 2013

Starting from aryl, heteroaryl, alkyl bromides, and benzyl chlorides the corresponding triorganyl indium derivatives are prepared in one step followed by the Pd‐catalyzed cross‐coupling reaction leading to a wide range of biaryls, biarylmethanes and alkylated aryl products.
ChemInform Abstract: An Efficient Synthesis of (Z)‐α‐Fluorochalcones via the Palladium‐Catalyzed Cross‐Coupling Reaction of (Z)‐α‐Fluorocinnamoyl Chloride with Boronic Acids.
Authors: Eddarir Said , Kajjout Mohammed , Rolando Christian
Published: June 2013

This method is useful for the preparation of naturally occurring chalcones and it opens the route to a general synthesis of (Z)‐α‐fluoro‐α,β‐unsaturated ketones bearing reactive substituents.
ChemInform Abstract: Stereoselective Pd(0) Catalyzed Five Component Cascada Synthesis of Complex Z,Z‐Bisallylamines.
Authors: Grigg Ronald , Akkarasamiyo Sunisa , Chuanopparat Nutthawat , Elboray Elghareeb E. , Aly Moustafa F. , Abbas‐Temirek Hussien H. , Kongkathip Boonsong , Kongkathip Ngampong
Published: June 2013

The described transformation tolerates a broad variety of functional groups and uses ammonium tartrate as a novel ammonia surrogate.
ChemInform Abstract: Divergent Reaction Pathways for Phenol Arylation by Arynes: Synthesis of Helicenes and 2‐Arylphenols.
Authors: Truong Thanh , Daugulis Olafs
Published: June 2013

The deployment of different bases determines the reaction pathway: either formation of helicenes or ortho‐arylation of phenols.
ChemInform Abstract: Rhodium‐ and Iridium‐Catalyzed Dehydrogenative Cyclization Through Double C—H Bond Cleavages to Produce Fluorene Derivatives.
Authors: Itoh Masaki , Hirano Koji , Satoh Tetsuya , Shibata Yu , Tanaka Ken , Miura Masahiro
Published: June 2013

Cyclization of 2,2‐diarylalkanoic acids proceeds through double C—H bond cleavage and decarboxylation in the presence of copper acetate and a Rh‐catalyst.
ChemInform Abstract: Aminocatalyzed Asymmetric Diels—Alder Reaction of 2,4‐Dienals and Rhodanine/Hydantoin Derivatives.
Authors: Zhu Kailong , Huang Huicai , Wu Wenbin , Wei Yuan , Ye Jinxing
Published: June 2013

The title reaction proceeds via a trienamine mechanism and gives rise to the formation of spirocyclic compounds (III) and (V) in good yields and excellent stereoselectivities.
ChemInform Abstract: Epoxidation of Alkenes Through Oxygen Activation over a Bifunctional CuO/Al2O3 Catalyst.
Authors: Scotti Nicola , Ravasio Nicoletta , Zaccheria Federica , Psaro Rinaldo , Evangelisti Claudio
Published: June 2013

A CuO/Al2O3 catalyst is shown to be highly effective for the one‐pot epoxidation of olefins, such as (I), (III), and (V) using cumene as solvent and oxygen carrier.
ChemInform Abstract: Palladium‐Catalyzed Cross‐Coupling of Aziridinylmetal Species, Generated by Sulfinyl—Magnesium Exchange, with Aryl Bromides: Reaction Optimization, Scope, and Kinetic Investigations.
Authors: Hughes Matthew , Boultwood Tom , Zeppetelli Gianfranco , Bull James A.
Published: June 2013

The method allows access to a number of diarylated aziridines of type (III) with retention of configuration.
ChemInform Abstract: 2,2,4,4‐Tetrathio Substituted 1,3‐Dithietanes.
Authors: Weber Wolfgang , Chirowodza Helen , Pasch Harald
Published: June 2013

The title compounds (III) are formed by reaction of thiophosgene with carbonotrithioates or O‐ethyldithiocarbonates (I).
ChemInform Abstract: Synthesis of Fused Bromofurans via Mg‐Mediated Dibromocyclopropanation of Cycloalkanone‐Derived Chalcones and Cloke—Wilson Rearrangement.
Authors: Gopi Elumalai , Namboothiri Irishi N. N.
Published: June 2013

The stereoconvergent formation of the spirodibromocyclopropane intermediates as single isomers is remarkable.
ChemInform Abstract: Multisubstituted Benzo[b]furans Through a Copper‐ and/or Palladium‐Catalyzed Assembly and Functionalization Process.
Authors: Arcadi Antonio , Blesi Federico , Cacchi Sandro , Fabrizi Giancarlo , Goggiamani Antonella , Marinelli Fabio
Published: June 2013

A straightforward general protocol for the synthesis of 2,5,7‐trisubstituted benzo[b]furans from readily available 2‐chloro‐ or 2‐bromo‐6‐iodo‐4‐substituted phenols is described and the subsequent functionalization in 7‐position using established cross‐coupling reactions is studied.
ChemInform Abstract: Palladium Catalyzed Cyclizations of Oxime Esters with 1,1‐Disubstituted Alkenes: Synthesis of α,α‐Disubstituted Dihydropyrroles and Studies Towards an Asymmetric Protocol.
Authors: Faulkner Adele , Scott James S. , Bower John F.
Published: June 2013

The title reaction is operationally simple and has wide scopes with respect to both the oxime esters and the alkenes.
ChemInform Abstract: Organocatalytic Multicomponent Reaction for the Acquisition of a Selective Inhibitor of mPTPB, a Virulence Factor of Tuberculosis.
Authors: He Rongjun , Zeng Li‐Fan , He Yantao , Wu Li , Gunawan Andrea Michelle , Zhang Zhong‐Yin
Published: June 2013

Pyrrole‐based libraries (VII) of potent protein tyrosine phosphatase inhibitors with improved potency and selectivity are synthesized via an organocatalyzed multicomponent Mannich‐type reaction.
ChemInform Abstract: Pd‐Catalyzed Asymmetric Allylic Alkylations of 3‐Substituted Indoles Using Chiral P/Olefin Ligands.
Authors: Liu Yilin , Du Haifeng
Published: June 2013

The title method provides a quick access to one stereoisomer (XIII) of the natural product angelicastigmin.
ChemInform Abstract: Rh2(II)‐Catalyzed Selective Aminomethylene Migration from Styryl Azides.
Authors: Kong Chen , Jana Navendu , Driver Tom G.
Published: June 2013

The products (IIa), (IIc), and (IId) cannot be made regioselectively using the Fischer indole synthesis.
ChemInform Abstract: Fast Assembly of 1H‐Imidazo[1,2‐a]imidazol‐5‐amines via Groebke—Blackburn—Bienayme Reaction with 2‐Aminoimidazoles.
Authors: Pereshivko Olga P. , Peshkov Vsevolod A. , Ermolat'ev Denis S. , Van der Eycken Erik V.
Published: June 2013

A novel microwave‐assisted protocol is developed to give the title products in varying yields depending on the substitution pattern of the substrates.
ChemInform Abstract: Site‐Selective Suzuki—Miyaura Reactions of 2,6‐Dichlorobenzoxazole.
Authors: Hamdy Aws M. , Eleya Nadi , Mohammed Hamid H. , Patonay Tamas , Spannenberg Anke , Langer Peter
Published: June 2013

This reaction proceeds with excellent site‐selectivity in favor of position 2, due to electronic reasons.
ChemInform Abstract: Unexpected Formation of Naphtho[2,1‐d]thiazole‐6,9‐dione from 3,5,6‐Trichloro‐2‐[2‐(E‐phenyldiazenyl)‐thiazol‐5‐yl]‐1,4‐benzoquinone.
Authors: Batenko N. , Belyakov S. , Valters R.
Published: June 2013

Reaction of compound (I) with acetaldehyde and diethylamine gives the unexpected product (III) whose structure is confirmed by an X‐ray structure analysis.
ChemInform Abstract: Water‐Soluble Organocatalysts for Hydrazone and Oxime Formation.
Authors: Crisalli Pete , Kool Eric T.
Published: June 2013

The aminobenzoic acids (MAC) and (DAB) efficiently promote the reaction of aromatic aldehydes and aliphatic ketones with hydrazines as well as substituted hydroxylamines.
ChemInform Abstract: Studies on Novel Synthetic Methodologies. Part 233. Pd(OAc)2 Catalyzed C—H Activation of 1,3,4‐Oxadiazoles and Their Direct Oxidative Coupling with Benzothiazoles and Aryl Boronic Acids Using Cu(OAc)2 as an Oxidant.
Authors: Salvanna N. , Reddy Gandolla Chinna , Das Biswanath
Published: June 2013

This is the first direct oxidative coupling of 1,3,4‐oxadiazoles with benzothiazoles.
ChemInform Abstract: One‐Step Synthesis of 5‐Substituted 1H‐Tetrazoles from an Aldehyde by Reaction with Acetohydroxamic Acid and Sodium Azide under Bi(OTf)3 Catalysis.
Authors: Sridhar Madabhushi , Mallu Kishore Kumar Reddy , Jillella Raveendra , Godala Kondal Reddy , Beeram China Ramanaiah , Chinthala Narsaiah
Published: June 2013

A simple direct conversion of aromatic and aliphatic aldehydes is achieved under conditions A) to give the tetrazoles in good yields.
ChemInform Abstract: Study of the Catalytic Activity of Zr(HPO4)2 in the Synthesis of Hexahydroquinoline Derivatives under Solvent‐Free Conditions.
Authors: Abdolmohammadi Shahrzad
Published: June 2013

A novel and green method for the synthesis of hexahydroquinoline derivatives (V) (9 examples) using a four‐component one‐pot strategy is given.
ChemInform Abstract: Palladium‐Catalyzed Synthesis of Isoquinolinones via Sequential Cyclization and N—O Bond Cleavage of N‐Methoxy‐o‐alkynylbenzamides.
Authors: Jithunsa Manita , Ueda Masafumi , Aoi Naoki , Sugita Shoichi , Miyoshi Tetsuya , Miyata Okiko
Published: June 2013

The method involves the intramolecular addition of Weinreb amides to alkynes followed by N—O bond cleavage and 1,5‐hydrogen shift as a key step.
ChemInform Abstract: Copper‐Catalyzed Intramolecular Oxidative C—H Functionalization and C—N Formation of 2‐Aminobenzophenones: Unusual Pseudo‐1,2‐Shift of the Substituent on the Aryl Ring.
Authors: Huang Pang‐Chi , Parthasarathy Kanniyappan , Cheng Chien‐Hong
Published: June 2013

A copper‐catalyzed intramolecular oxidative C—H functionalization of 2‐aminobenzophenone affords two regioisomeric 6‐membered‐ring acridones.