bluuebunny/crossref_metadata_2025 huggingface dataset:
Early season grazing effects on birch, grass, herbs and plant litter in coastal meadows used by reindeer: a short-term case study
Authors: Eilertsen Svein M. , Schjelderup Ivar , Mathiesen Svein D.
Published: June 2013

The effects of short-term grazing by reindeer (Rangifer tarandus tarandus) on birch (Betula pubescens), grasses, herbs and plant litter in coastal meadows in spring were investigated in grazed and control plots in 1996 and 1997. The meadow contained 29 different plant species, all but one of which (Deschampsia caespitosa) were intensively grazed by reindeer. Young birch eaten by reindeer did not increase in mean height (9 cm), while birch protected from grazing grew from 9 to 22 cm (P<0.05) during the two years of the experiment. The ratio of grasses to herbs was higher (P<0.05) in the grazed plots than in the control plots, and the relative abundace of grasses increased during the summer in both years. The abundance of Rumex asetosa and Alchemilla subcrenata decreased (P<0.05) in response to grazing. From spring 1996, plant litter increased (P<0.05) on the control plots until the investigation came to an end in spring 1998, unlike grazed vegetation. Reindeer affects the coastal meadows in northern Norway in spring by browsing on birch and grazing on herbs and grass which in the long term might influence the cultural landscape in favour of the growth of grass species.
Do seasonal changes in Svalbard reindeer fur have relevance for heat transfer?
Authors: Cuyler Christine , Øritsland Nils A.
Published: June 2013

Physical characteristics of Svalbard reindeer (Rangifer tarandus platyrhynchus) fur samples were examined with respect to season. A total of 33 dorsal fur sections including adults and calves were investigated. A direct relationship between hair density and heat transfer was not observed, and optimal hair density may depend on an interaction with other fur characteristics. Seasonal changes in fur length and depth were inversely proportional to, and appear to be the main determinants of, seasonal changes in calm air conductance. Fur length and depth, however did not explain the exceptional wind resistance of Svalbard reindeer fur. Since wind has little effect on heat transfer through Svalbard reindeer fur regardless of season or animal age, fur characteristics, which change are not likely critical. Instead, constant physical characteristics, which trap still-air within the fur and resist wind compaction and penetration, are probably responsible. These could include hair stiffness, the crimped wave, hollow hairs, intertwining distal tips and the fine wool fuzz about the hair roots. The extent and means are not well understood at present.
Does seasonal variation in forage quality influence the potential for resource competition between muskoxen and Peary caribou on Banks Island?
Authors: Larter Nicholas C. , Nagy John A. , Hik David S.
Published: June 2013

Inter- and intra-annual variation in forage quality may influence population dynamics of Peary caribou and muskoxen on Banks Island. From 1993 to 1998 we collected 300 composite samples of sedge (Carex aquatilis and Carex spp.), willow (Salix arctica), legume (Oxytropis spp. and Astragalus spp.), and avens (Dryas integrifolia). Samples were collected in mid-June (start of the growing season), mid-July (peak of the growing season), mid-late August (senescence), and early (November), mid- (February), and late- (April/May) winter. We analysed forages for percent digestibility (in vitro acid-pepsin dry matter digestibility), crude protein (CP), fibre, lignin, and energy content. There was significant inter-annual variation in levels of lignin, fibre, and energy, and significant intra-annual (seasonal) variation for all quality measures and forages, which reflected the strong difference in quality between summer and winter. We discuss the relationship between forage quality and seasonal diet composition of Peary caribou and muskoxen, and the potential implications for the reduced Peary caribou and high muskoxen populations.
Atomic Structure of Li2MnO3 after Partial Delithiation and Re‐Lithiation
Authors: Wang Rui , He Xiaoqing , He Lunhua , Wang Fangwei , Xiao Ruijuan , Gu Lin , Li Hong , Chen Liquan
Published: June 2013

Li2MnO3 is the parent compound of the well‐studied Li‐rich Mn‐based cathode materials xLi2MnO3·(1‐x)LiMO2 for high‐energy‐density Li‐ion batteries. Li2MnO3 has a very high theoretical capacity of 458 mA h g−1 for extracting 2 Li. However, the delithiation and lithiation behaviors and the corresponding structure evolution mechanism in both Li2MnO3 and Li‐rich Mn‐based cathode materials are still not very clear. In this research, the atomic structures of Li2MnO3 before and after partial delithiation and re‐lithiation are observed with spherical aberration‐corrected scanning transmission electron microscopy (STEM). All atoms in Li2MnO3 can be visualized directly in annular bright‐field images. It is confirmed accordingly that the lithium can be extracted from the LiMn2 planes and some manganese atoms can migrate into the Li layer after electrochemical delithiation. In addition, the manganese atoms can move reversibly in the (001) plane when ca. 18.6% lithium is extracted and 12.4% lithium is re‐inserted. LiMnO2 domains are also observed in some areas in Li1.63MnO3 at the first cycle. As for the position and occupancy of oxygen, no significant difference is found between Li1.63MnO3 and Li2MnO3.
Exploring tire crumb as activator for sulfur vulcanization
Authors: Guzmán Manuel , Agulló Núria , Giese Ulrich , Borrós Salvador
Published: June 2013

In this study, a new approach to reduce the environmental effects of end of life and waste rubber and, at the same time, to minimize the ZnO levels in rubber compounds is presented. The use of tire crumb as activator for sulfur vulcanization is investigated. To give an insight into the reaction mechanism, the approach is tested using model compound vulcanization (MCV) with squalene as a model molecule. The results showed that the use of the new recipe does not alter the kinetics of the vulcanization and that the cross‐link degree achieved is nearly equivalent to using ZnO. However, in real rubber mixtures [natural rubber (NR), butadiene rubber (BR), and styrene–butadiene rubber (SBR)], there is not a correlation between the promising characteristics seen in MCV and the actual performance of tire crumb. The extent of cross‐linking is significantly lower and the mechanical properties are worst in most of the cases. In spite of that, the results found in MCV suggest that further research should be carried out in order to take advantage of the features observed by improving or facilitating the interaction between the chemicals present in the tire crumb and the ingredients added to the rubber matrix. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 130: 2809–2820, 2013
Morphology and properties of highly talc‐ and CaCO3‐filled poly(vinyl alcohol) composites prepared by melt processing
Authors: Wang Bin , Wang Qi , Li Li
Published: June 2013

Highly filled poly(vinyl alcohol) (PVA) composites, PVA/talc and PVA/CaCO3, were successfully prepared through melt‐processing technology without use of coupling agents or compatibilizers. Morphology analysis showed that both of the two fillers well dispersed in PVA matrix. Differently, the flaky talc obviously oriented, while the particulate CaCO3 was randomly scattered in PVA matrix. Rheological analysis showed that the two filled systems exhibited a common shear‐thinning phenomenon, confirming their pseudoplastic nature. Compared with the particulate CaCO3, the flaky talc exhibited a closer arrangement in the composite, resulting in a lower threshold filler content to form the network structure. Therefore, PVA/talc composite showed higher melt viscosity and lower extrudate‐swell ratio. The orientation of the flaky talc particles in the system also resulted in the higher melting and heat‐deflection temperatures, as well as a greater reinforcement effect on the composite, but a lower elongation at break. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 130: 3050–3057, 2013
The use of different information and communication technologies to support knowledge sharing in organizations: From e‐mail to micro‐blogging
Authors: Yuan Y. Connie , Zhao Xuan , Liao Qinying , Chi Changyan
Published: June 2013

Previous research has revealed the following three challenges for knowledge sharing: awareness of expertise distribution, motivation for sharing, and network ties. In this case study, we examine how different generations of information and communication technologies (ICTs), ranging from e‐mail to micro‐blogging, can help address these challenges. Twenty‐one interviews with employees from a multinational company revealed that although people think social media can better address these challenges than older tools, the full potential of social media for supporting knowledge sharing has yet to be achieved. When examining the interconnections among different ICTs, we found that employees′ choice of a combination of ICTs, as affected by their functional backgrounds, could create “technological divides” among them and separate resources. This finding indicates that having more ICTs is not necessarily better. ICT integration, as well as support for easy navigation, is crucial for effective knowledge search and sharing. Adaptation to local culture is also needed to ensure worldwide participation in knowledge sharing.
Degenerate Two‐Photon Absorption and Effective Optical‐Power‐Limiting Properties of Multipolar Chromophores Derived from 2,3,8‐Trisubstituted Indenoquinoxaline
Authors: Lin Tzu‐Chau , Guo Fang‐Ling , Li May‐Hui , Liu Che‐Yu
Published: June 2013

Two analogous multipolar chromophores (1 and 2) that contained 2,3,8‐trisubstituted indenoquinoxaline moieties have been synthesized and characterized for their two‐photon absorption properties, both in the femtosecond and nanosecond time regimes. We demonstrated that their multi‐branched framework structures, which incorporated appropriately functionalized indenoquinoxaline units, afforded large molecular nonlinear absorptivities within the studied spectroscopic range. Effective optical‐power‐limiting and stabilization behaviors in the nanosecond regime of dye molecule (2) were also investigated and the results indicated that such a structural motif could be a useful approach to the molecular design of highly active two‐photon systems for quick‐response and related broadband optical‐suppressing applications, in particular for confronting laser pulses of a long duration.
Energieausweis+ für Plusenergie‐Wohngebäude mit zusätzlichen Informationen gemäß § 17 Absatz 4 der Energieeinsparverordnung (EnEV)
Authors: Stockinger Volker , Grunewald John , Jensch Werner
Published: June 2013

Sie werden als mögliche Gebäude der Zukunft in der Bundesrepublik Deutschland gesehen: Häuser, welche bei nachhaltiger Planung und Umsetzung sowie ressourcenschonender Nutzung mehr regenerative Energie erzeugen als sie verbrauchen. Bisher eilte der Energie+‐Standard jedoch der aktuellen Gesetzgebung voraus. Der “ENERGIEAUSWEIS+ für Plusenergie‐Wohngebäude“ ist als Ergänzung zum Energieausweis für Wohngebäude gedacht, welchem nach § 17 Absatz 4 Energieeinsparverordnung (EnEV) zusätzliche Informationen beigefügt werden dürfen [18]. Mit dem “ENERGIEAUSWEIS+ für Plusenergie‐Wohngebäude“ steht ein Werkzeug zur Verfügung, mit dem Energie+‐Konzepte unter Berücksichtigung aller nutzer‐ und planungsabhängigen Energieströme beurteilt werden können.

Energy performance certificate for PlusEnergy residential buildings, containing additional information in accordance with § 17 (4) of the German Building Energy Conservation Ordinance (EnEV). These could represent the future of buildings in Germany: homes that generate more renewable energy than they consume, thanks to sustainable planning and construction coupled with efficient, responsible use. But legislation has been lagging behind the PlusEnergy standard. The new Energieausweis+ certificate for PlusEnergy residential buildings was designed as an add‐on to the energy performance certificate for residential buildings, given the option provided in § 17 (4) of the German Building Energy Conservation Ordinance to include additional information [18]. The Energieausweis+ certificate for PlusEnergy residential buildings is a tool which can be deployed to assess PlusEnergy designs in terms of all user‐ and planning‐dependent energy flows.
Effects of whole‐body exposure to 915 MHz RFID on secretory functions of the thyroid system in rats
Authors: Kim Hye Sun , Paik Man‐Jeong , Kim Yeon Ju , Lee Gwang , Lee Yun‐Sil , Choi Hyung‐Do , Kim Byung Chan , Pack Jeong‐Ki , Kim Nam , Ahn Young Hwan
Published: June 2013

As a part of an investigation on the potential risks of radiofrequency identification (RFID) on human health, we studied whether exposure to 915 MHz RFID in rats significantly affected the secretory function of the thyroid system. A reverberation chamber was used as a whole‐body exposure system. Male Sprague–Dawley rats were exposed for 8 h per day, 5 days per week, for a duration of 2, 4, 8, or 16 weeks. The estimated whole‐body average specific absorption rate (SAR) varied from 3.2 to 4.6 W/kg depending on the age/mass of the animals for the field of the 915 MHz RFID reader. Plasma levels of triiodothyronine (T3), thyroxine (T4), and thyroid‐stimulating hormone (TSH) were evaluated via enzyme‐linked immunosorbent assay. Morphological changes in the thyroid gland were then analyzed. No changes in T3, T4, or TSH were observed over time between the sham‐ and RFID‐exposed groups. We suggest that subchronic exposure to 915 MHz RFID at a SAR of 4 W/kg does not cause significant effects on thyroid secretory function. Bioelectromagnetics. 34:521–529. © 2013 Wiley Periodicals, Inc.
Multi‐phosphorylation of the Intrinsically Disordered Unique Domain of c‐Src Studied by In‐Cell and Real‐Time NMR Spectroscopy
Authors: Amata Irene , Maffei Mariano , Igea Ana , Gay Marina , Vilaseca Marta , Nebreda Angel R. , Pons Miquel
Published: June 2013

Intrinsically disordered regions (IDRs) are preferred sites for post‐translational modifications essential for regulating protein function. The enhanced local mobility of IDRs facilitates their observation by NMR spectroscopy in vivo. Phosphorylation events can occur at multiple sites and respond dynamically to changes in kinase–phosphatase networks. Here we used real‐time NMR spectroscopy to study the effect of kinases and phosphatases present in Xenopus oocytes and egg extracts on the phosphorylation state of the “unique domain” of c‐Src. We followed the phosphorylation of S17 in oocytes, and of S17, S69, and S75 in egg extracts by NMR spectroscopy, MS, and western blotting. Addition of specific kinase inhibitors showed that S75 and S69 are phosphorylated by CDKs (cyclin‐dependent kinases) differently from Cdk1. Moreover, although PKA (cAMP‐dependent protein kinase) can phosphorylate S17 in vitro, this was not the major S17 kinase in egg extracts. Changes in PKA activity affected the phosphorylation levels of CDK‐dependent sites, thus suggesting indirect effects of kinase–phosphatase networks. This study provides a proof‐of‐concept of the use of real‐time in vivo NMR spectroscopy to characterize kinase/phosphatase effects on intrinsically disordered regulatory domains.
Iridium(III)‐Catalyzed Approach for the Synthesis of Fused Arenes: Access to Isoindolines, Indanes, and Dihydroisobenzofurans
Authors: Auvinet Anne‐Laure , Ez‐Zoubir Mehdi , Bompard Savinien , Vitale Maxime R. , Brown Jack A. , Michelet Véronique , Ratovelomanana‐Vidal Virginie
Published: June 2013

A facile and efficient method for the synthesis of isoindoline, indane, and dihydroisobenzofuran derivatives has been developed through the application of a halogen‐bridged iridium(III) complex to the [2+2+2] cycloaddition of α,ω‐diynes with alkynes. The cycloaddition tolerates a broad range of substitution groups, such as alcohol, alkyl, ether, and halogen, and the chemistry can be extended to prepare the corresponding borylated fused arenes. The reaction shows that hindered starting materials are also good partners, which provide the desired fused arenes in good yields.
Encapsulation of Lavandin Essential Oil in Poly‐(ϵ‐caprolactones) by PGSS Process
Authors: Varona S. , Martín Á. , Cocero M. J. , Duarte C. M. M.
Published: June 2013

Lavandin essential oil has been encapsulated in poly‐(ϵ‐caprolactone) (MW: 4000 g mol–1) by means of the particles from gas saturated solutions (PGSS) process. The influence of process conditions, i.e., pre‐expansion temperature and pressure, and oil/polymer mass ratio, on the morphology of particles and the efficiency of encapsulation has been analyzed. Spherical particles with particle sizes of 100–700 μm were obtained, with increasing particle sizes and more agglomeration as the oil/polymer ratio was increased. The efficiency of encapsulation was increased by conditions that favored a fast solidification of the polymer shell, including high pre‐expansion pressures, reaching efficiencies up to 50 % with oil loads up to 120 mg oil/g particles.
Drying Kinetics Prediction of Solid Waste Using Semi‐Empirical and Artificial Neural Network Models
Authors: Perazzini H. , Freire F. B. , Freire J. T.
Published: June 2013

The drying process of organic solid waste is investigated, based on an experimental study involving its drying kinetics. The experiments were conducted in a thin‐layer fixed‐bed dryer under various operational conditions. The problem of selecting the best fit for solid waste moisture content as a function of time is addressed as well, using artificial neural network (ANN) models and four well‐known drying kinetics correlations commonly applied to biological materials. According to the statistical analysis employed, the simulations showed good results for the ANN, and the Overhults model provided optimum agreement with experimental data among all other models evaluated. Empirical correlations between the Overhults model parameters and the drying operational conditions using nonlinear regression techniques were determined.
Nanocrystalline Zeolite Tetraethylammonium‐Beta Membrane for Preferential Sorption and Transport of CO2 over N2
Authors: Singh P. S. , Selvam T. , Reuß S. , Avhale A. , Lopez‐Orozco S. , Schwieger W.
Published: June 2013

CO2/N2 gas separation was performed over a nanocrystalline zeolite tetraethylammonium (TEA)‐beta membrane prepared on a stainless‐steel porous disc by repeated hydrothermal crystallization. Two to three consecutive hydrothermal syntheses were required to form a membrane comprised of a continuous and compact layer of zeolite beta nanocrystals on the support. The membrane TEA‐BEA3 obtained by three consecutive syntheses, in which the membrane from two consecutive syntheses was used as support, exhibited the highest structural order. When the separation experiment was performed over this membrane without applying any external applied pressure, 100 % selectivity of CO2 over N2 was observed. The separation was driven by differences in chemical potentials of the molecules generated only by the adsorption‐desorption behavior of the gases into the membrane. The novel zeolite TEA‐beta membrane provided promising results for the separation of small gas molecules due to the combined influence of diffusion and sorption selectivity.
CFD Study on the Local Mass Transfer Efficiency in the Gas Phase of Structured Packing
Authors: Zhang Y.‐L. , Zhu H.‐M. , Yin Q.‐X.
Published: June 2013

Visualization of local mass transfer coefficients over the dry surface of corrugated‐sheet structured packing is essential for optimizing the existing geometry of structured packing and for improving mass transfer efficiency to develop new structured packing. The local flow patterns between packing sheets and the gas‐phase mass transfer coefficient at each point over the surface are illustrated by employing a wall‐surface reaction model. Different turbulence models are utilized, i.e., a standard κ‐ϵ model and three different low‐Re‐κ‐ϵ models. The numerical calculation results with the Lam‐Bremhorst low‐Re‐κ‐ϵ turbulence model is found to agree well with experimental data. There are three similar regions with enhanced mass transfer efficiency in each mass transfer unit cell of structured packing.
ChemInform Abstract: Site Preference, Magnetism and Lattice Vibrations of Intermetallics Lu2Fe17‐xTx (T: Cr, Mn, Ru).
Authors: Li Jin‐Chun , Qian Ping , Zhang Zhen‐Feng , Yuan Xiao‐Jian , Wang Yi‐Wen , Shen Jiang , Chen Nan‐Xian
Published: June 2013

An atomistic study on the phase stability, site preference and lattice constants of the rare earth intermetallics Lu2Fe17‐xMx (M: Cr, Mn, Ru) is presented.
ChemInform Abstract: Structural Consideration on the Emission Properties of Eu2+‐Doped Ba(Sr, Ca)2MgSi2O8.
Authors: Yonesaki Yoshinori
Published: June 2013

Eu2+‐doped Ba(Sr,Ca)2MgSi2O8 are prepared by solid state reaction of a stoichiometric mixture of BaCO3, SrCO3, CaCO3, Mg carbonate hydroxide, SiO2, and Eu2O3 plus NH4Cl as flux (1100 °C, 4 h, 2% H2/N).
ChemInform Abstract: Cs2B4SiO9: A Deep‐Ultraviolet Nonlinear Optical Crystal.
Authors: Wu Hongping , Yu Hongwei , Pan Shilie , Huang Zhenjun , Yang Zhihua , Su Xin , Poeppelmeier Kenneth R.
Published: June 2013

Single crystals of the new nonlinear optical compound of title are obtained from a stoichiometric melt of CsCO3, H3BO3, and SiO2 (Pt crucible, 750 °C, 10 h).
ChemInform Abstract: Synthesis and Relative Optical Properties of Eu3+/Tb3+‐Activated Li3InB2O6.
Authors: Cai G. M. , Fan J. J. , Li H. K. , Zhao Z. , Su L. M. , Jin Z. P.
Published: June 2013

The new title phosphors are prepared by solid state reaction of Li2CO3, In2O3, Eu2O3, Tb4O7, and H3BO3 (1.
ChemInform Abstract: Superconducting Phases in Potassium‐Intercalated Iron Selenides.
Authors: Ying Tianping , Chen Xiaolong , Wang Gang , Jin Shifeng , Lai Xiaofang , Zhou Tingting , Zhang Han , Shen Shijie , Wang Wanyan
Published: June 2013

From a series of KxFe2Se2(NH3)y (x = 0.1—1.0) samples prepared by intercalation of K into β‐FeSe in liquid NH3, K0.3Fe2Se2(NH3)0.47 and K0.6Fe2Se2(NH3)0.37 are obtained as pure phases of the 44 K and 30 K superconducting systems, respectively.
ChemInform Abstract: Disorder‐Controlled Electrical Properties in the Ho2Sb1‐xBixO2 Systems.
Authors: Wang Peng L. , Kolodiazhnyi Taras , Yao Jinlei , Mozharivskyj Yurij
Published: June 2013

Samples of the title phases are prepared over the whole composition range (x = 0—1.0) from mixtures of Ho, Sb, Bi, and Ho2O3 (pressed pellets, evacuated silica tubes, 800 °C, 48 h and 1000 °C, 20 h).
ChemInform Abstract: Ferromagnetism in the Half‐Heusler XCsBa Compounds from First‐Principles Calculations (X: C, Si, and Ge).
Authors: Lakdja Abdelaziz , Rozale Habib , Chahed Abbes , Benhelal Omar
Published: June 2013

DFT calculations predict the title compounds to be half‐metallic ferromagnets with an integer magnetic moment of 1 μB.
ChemInform Abstract: Synthesis, Characterization of Co—Ni—Cu Trimetallic Alloy Nanocrystals and Their Catalytic Properties. Part 91.
Authors: Singh Supriya , Srivastava Pratibha , Singh Gurdip
Published: June 2013

The title alloy particles are prepared by addition of a solution of hydrazine and NaOH to a solution of the metal chlorides in ethylene glycol (60 °C, 1 h).
ChemInform Abstract: Disordered Co1.28Mn1.71O4 as a Visible‐Light‐Responsive Photocatalyst for Hydrogen Evolution.
Authors: Chen Zu Peng , Xing Jun , Jiang Ha Bo , Yang Hua Gui
Published: June 2013

The title compound is prepared by injecting a solution of NaBH4 and NaOH into an aqueous mixture of MnO2 and CoCl2.
ChemInform Abstract: Kinetically Controlling Phase Transformations of Crystalline Mercury Selenidostannates Through Surfactant Media.
Authors: Xiong Wei‐Wei , Li Pei‐Zhou , Zhou Tian‐Hua , Tok Alfred Iing Yoong , Xu Rong , Zhao Yanli , Zhang Qichun
Published: June 2013

It is found that the novel mercury selenidostannate (IV) undergoes a structural phase transition to the thermodynamically stable phase (V) under prolonged reaction time.
ChemInform Abstract: Synthesis, Crystal and Electronic Structures and Magnetic Properties of Li2SnMo3O8: A Novel Reduced Molybdenum Oxide Containing Mo3O13 Cluster Units.
Authors: Gall Philippe , Al Orabi Rabih Al Rahal , Guizouarn Thierry , Cuny Jerome , Fontaine Bruno , Gautier Regis , Gougeon Patrick
Published: June 2013

Single crystals of the quaternary title oxide are obtained by arc welding of a stoichiometric mixture of Li2MoO4, SnO2, MoO3, and Mo (Mo crucible 1650 °C, 72 h).
ChemInform Abstract: Synthesis and Crystal Structure of Cs2U3Se7.
Authors: Mesbah Adel , Oh George N. , Bellott Brian J. , Ibers James A.
Published: June 2013

The new title compound is synthesized by solid state reaction of U, Se, As, and Cs2Se3 (evacuated silica tube, 1.
ChemInform Abstract: Diversity‐Oriented Enantioselective Synthesis of Highly Functionalized Cyclic and Bicyclic Alcohols.
Authors: Mao Bin , Fananas‐Mastral Martin , Lutz Martin , Feringa Ben L.
Published: June 2013

A highly regio‐ and enantioselective Cu‐catalyzed hetero‐allylic asymmetric alkylation with functionalized Grignard reagents is developed.
ChemInform Abstract: Binap‐Silver Salts as Chiral Catalysts for the Enantioselective 1,3‐Dipolar Cycloaddition of Azomethine Ylides and Alkenes.
Authors: Mancebo‐Aracil Juan , Martin‐Rodriguez Maria , Najera Carmen , Sansano Jose M. , Costa Paulo R. R. , de Lima Evanoel Crizanto , Dias Ayres G.
Published: June 2013

The application of AgSbF6 in the Binap‐catalyzed enantioselective cycloaddition between azomethine ylides and alkenes is compared with previously reported analogous transformations mediated by AgClO4.
ChemInform Abstract: Diastereoselective Synthesis of β‐Heteroaryl syn‐α‐Methyl‐β‐amino Acid Derivatives via a Double Chiral Auxiliary Approach.
Authors: Bian Jianwei , Blakemore David , Warmus Joseph S. , Sun Jianmin , Corbett Matthew , Rose Colin R. , Bechle Bruce M.
Published: June 2013

The addition of chiral auxiliary (II) to heterocyclic tert‐butyl sulfinimines (I) proceeds with high diastereoselectivity (92—98% d.e.
ChemInform Abstract: Oxidative C—C Bond Cleavage of Aldehydes via Visible‐Light Photoredox Catalysis.
Authors: Sun Hongnan , Yang Chao , Gao Fei , Li Zhe , Xia Wujiong
Published: June 2013

The visible‐light mediated oxidative C—C bond cleavage of aldehydes (I) leads to the corresponding ketones (II).
ChemInform Abstract: Reduction of Alkenes Catalyzed by Copper Nanoparticles Supported on Diamond Nanoparticles.
Authors: Dhakshinamoorthy Amarajothi , Navalon Sergio , Sempere David , Alvaro Mercedes , Garcia Hermenegildo
Published: June 2013

Copper nanoparticles supported on diamond nanoparticles are highly efficient and reusable heterogeneous catalysts for hydrogenation of styrene derivatives (I) and other alkenes to the corresponding alkane derivatives (20 examples).
ChemInform Abstract: A Formal Metal‐Free N‐Arylation via the Schmidt Reaction of Aromatic Aldehydes with an Azido Amine.
Authors: Gu Peiming , Sun Jian , Kang Xiao‐Yan , Yi Ming , Li Xue‐Qiang , Xue Ping , Li Rui
Published: June 2013

12 examples of substituted aromatic aldehydes are reported to give the corresponding fully aryl‐migrated disubstituted formamides in good to excellent yields.
ChemInform Abstract: New Preparation of TMPZnCl·LiCl by Zn Insertion into TMPCI. Application to the Functionalization of Dibromodiazines.
Authors: Unsinn Andreas , Ford Mark J. , Knochel Paul
Published: June 2013

The reported procedure involves cheap and safe reagents under mild conditions.
ChemInform Abstract: Concise Asymmetric Synthesis of Orthogonally Protected syn‐ and anti‐1,3‐Aminoalcohols.
Authors: Lee Jae Seung , Kim Dongeun , Lozano Lucia , Kong Suk Bin , Han Hyunsoo
Published: June 2013

The reaction of aldehydes (II) with novel chiral allylation reagent (I) leads to allyl carbonates (III), which are converted into orthogonally protected anti‐aminoalcohols (V) by an iridium‐catalyzed allylic amidation.
ChemInform Abstract: 1‐O‐Alkyl (Di)glycerol Ethers Synthesis from Methyl Esters and Triglycerides by Two Pathways: Catalytic Reductive Alkylation and Transesterification/Reduction.
Authors: Sutter Marc , Dayoub Wissam , Metay Estelle , Raoul Yann , Lemaire Marc
Published: June 2013

Title compounds (III) and (VI) are prepared from bio‐sourced methyl ethers (I) in both good yields and selectivities by two different pathways.
ChemInform Abstract: Synthesis of Hydrazine and Azapeptide Derivatives by Alkylation of Carbazates and Semicarbazones.
Authors: Garcia‐Ramos Yesica , Proulx Caroline , Lubell William D.
Published: June 2013

Initial alkylation studies of carbazates (I) with propargyl bromide (IIa) using different bases show that superior conversion is achieved with fluorene derivative (Ib).
ChemInform Abstract: Synthesis of γ‐Azido‐β‐ureido Ketones and Their Transformation into Functionalized Pyrrolines and Pyrroles via Staudinger/Aza‐Wittig Reaction.
Authors: Fesenko Anastasia A. , Shutalev Anatoly D.
Published: June 2013

Hydrolysis of acetals of type (I) and (XII) followed by treatment with the sulfinic acid (III), α‐functionalized ketones, and urea or urea derivatives allows a simple and efficient access to γ‐azido‐β‐ureido ketones and/or their cyclic isomers.
ChemInform Abstract: One‐Step Method for the Synthesis of Aryl Olefins from Aryl Aldehydes and Aliphatic Aldehydes.
Authors: Borate Hanumant B. , Gaikwad Supriya H. , Kudale Ananada S. , Chavan Subhash P. , Pharande Shrikant G. , Wagh Vitthal D. , Sawant Vikram S.
Published: June 2013

The reaction of aromatic aldehydes with aliphatic ones in the presence of malononitrile proceeds via Knoevenagel products as intermediates (reaction mechanism).
ChemInform Abstract: Palladium‐Catalyzed Trifluoroethylation of Terminal Alkynes with 1,1,1‐Trifluoro‐2‐iodoethane.
Authors: Feng Yi‐Si , Xie Chuan‐Qi , Qiao Wen‐Long , Xu Hua‐Jian
Published: June 2013

An efficient Pd‐catalyzed 2,2,2‐trifluoroethylation reaction of terminal alkyl and aryl alkynes using readily available trifluoroiodoethane is developed.
ChemInform Abstract: Evidence for Metal—Ligand Cooperation in a Pd—PNF Pincer‐Catalyzed Cross‐Coupling.
Authors: Scharf Adam , Goldberg Israel , Vigalok Arkadi
Published: June 2013

The first Pd‐pincer complex bearing a fluorine atom (PPC) is prepared via dearomatization of a phosphine‐quinoline precursor (not shown).
ChemInform Abstract: Iron‐Catalyzed Aromatic Amination for Nonsymmetrical Triarylamine Synthesis.
Authors: Hatakeyama Takuji , Imayoshi Ryuji , Yoshimoto Yuya , Ghorai Sujit K. , Jin Masayoshi , Takaya Hikaru , Norisuye Kazuhiro , Sohrin Yoshiki , Nakamura Masaharu
Published: June 2013

The key to the success of this novel protocol is the use of in situ generated magnesium amides in the presence of a lithium halide, which dramatically increases the product yield.
ChemInform Abstract: One‐Pot Synthesis of Aryloxypropanediols from Glycerol: Towards Valuable Chemicals from Renewable Sources.
Authors: Truscello Ada M. , Gambarotti Cristian , Lauria Mirvana , Auricchio Sergio , Leonardi Gabriella , Shisodia Suresh U. , Citterio Attilio
Published: June 2013

The title compounds are obtained by a regioselective reaction of phenols and glycerol using diethyl carbonate as promoter.
ChemInform Abstract: Synthesis of α‐Alkylated β‐Ketoesters by Alkoxycarbonylation/Michael Addition Domino Reaction.
Authors: Wahl Benoit , Philipson Yann , Bonin Helene , Mortreux Andre , Sauthier Mathieu
Published: June 2013

Highly functionalized α‐alkylated β‐ketoesters are prepared in a novel two‐step one‐pot domino alkoxycarbonylation and Michael addition reactions.
ChemInform Abstract: Preparation of Arylpropynamides and Their Reaction with Malonyl Acid Derivatives.
Authors: Petina Olga A. , Yakovlev Igor P. , Geffken Detlef
Published: June 2013

Malonyl chloride reacts to give 2H‐pyranones, whereas monosubstituted derivatives give 1,3‐oxazin‐6‐ones under similar conditions.
ChemInform Abstract: Nickel‐Catalyzed Novel β,γ‐Unsaturated Nitrile Synthesis.
Authors: Tang Shan , Liu Chao , Lei Aiwen
Published: June 2013

A novel route for the synthesis of β,γ‐unsaturated nitriles is developed using the Ni‐catalyzed direct Heck‐type coupling of alkenes with α‐cyanoalkyl bromides.
ChemInform Abstract: Synthesis of 6‐Substituted Salicylates via Biomimetic Aromatization Utilizing the Cross Metathesis of a Vinyl Dioxinone with Homoallylic Alcohols.
Authors: Blencowe Peter S. , Barrett Anthony G. M.
Published: June 2013

Isopropyl alkyl and aryl salicylate esters (VI) and (X) are prepared by cross metathesis of vinyl dioxinone (II) with homoallylic alcohols (I) and (VII), resp., followed by oxidation and aromatization via generation and trapping of enedione‐ketenes.
ChemInform Abstract: Solvent‐Free Synthesis of α‐Amino Nitrile‐Derived Ureas.
Authors: Ventosa‐Andres Pilar , Gonzalez‐Vera Juan A. , Garcia‐Lopez M. Teresa , Herranz Rosario
Published: June 2013

The reaction of aminonitriles (I) with isocyanates leads to desired ureas (III) in high isolated yields, whilst crude ureas derived from aminonitriles (IV) are prone to a cyclization during chromatographic purification affording hydantoins (V).
ChemInform Abstract: Dilithium Tetrachlorocuprate(II) Catalyzed Oxidative Homocoupling of Functionalized Grignard Reagents.
Authors: Hua Si‐Kai , Hu Qiu‐Peng , Ren Jiangmeng , Zeng Bu‐Bing
Published: June 2013

A practical method is demonstrated, which is applicable to alkyl, alkynyl, and aromatic magnesium halides.
ChemInform Abstract: Scope of the Desulfinylative Palladium‐Catalyzed Cross‐Coupling of Aryl Sulfinates with Aryl Bromides.
Authors: Ortgies Dirk H. , Barthelme Alexandre , Aly Sara , Desharnais Brigitte , Rioux Steven , Forgione Pat
Published: June 2013

Optimized conditions are developed to provide the synthesis of biphenyls by Pd(0)‐catalyzed coupling.
ChemInform Abstract: Simple Oxazolidine Chiral Diene Ligands for Enantioselective Rh‐Catalyzed Conjugate Additions.
Authors: Fairhurst Nathan W. G. , Munday Rachel H. , Carbery David R.
Published: June 2013

OAD is found to be the most efficient ligand for the process.
ChemInform Abstract: Expedient Synthesis of Phenanthrenes via In(III)‐Catalyzed 6‐exo‐dig Cycloisomerization.
Authors: Kwon Yongseok , Cho Hyunkyung , Kim Sanghee
Published: June 2013

Numerous functionalized phenanthrenes are obtained via In(III)‐catalyzed electrophile‐promoted nucleophilic cyclization of o‐propargylbiaryls.Various functionalized groups are tolerated on the alkynyl carbon.
ChemInform Abstract: DMAP‐Catalyzed [3 + 2] and [4 + 2] Cycloaddition Reactions Between [60]Fullerene and Unmodified Morita—Baylis—Hillman Adducts in the Presence of Ac2O.
Authors: Yang Hai‐Tao , Ren Wen‐Long , Miao Chun‐Bao , Dong Chun‐Ping , Yang Yang , Xi Hai‐Tao , Meng Qi , Jiang Yan , Sun Xiao‐Qiang
Published: June 2013

DMAP and Ac2O‐mediated coupling of fullerene (I) with arylated and alkenylated Morita—Baylis—Hillman adducts is found to allow a new and easy access to cylopentene‐fused fullerenes.
ChemInform Abstract: Room‐Temperature Arylation of Arenes and Heteroarenes with Diaryliodonium Salts by Photoredox Catalysis.
Authors: Liu Yu‐Xia , Xue Dong , Wang Jia‐Di , Zhao Cong‐Jun , Zou Qing‐Zhu , Wang Chao , Xiao Jianliang
Published: June 2013

Aryl radicals, generated by Ru‐catalyzed photolytic cleavage of diaryliodonium salt, undergo efficient coupling with arenes and hetarenes to afford a wide range of biaryls.
ChemInform Abstract: α‐Lithiation—Electrophile Trapping of N‐Thiopivaloylazetidin‐3‐ol: Stereoselective Synthesis of 2‐Substituted 3‐Hydroxyazetidines.
Authors: Hodgson David M. , Pearson Christopher I. , Thompson Amber L.
Published: June 2013

Treatment of the azetidinol (I) with sBuLi followed by reaction with various electrophiles results in stereoselective formation of 2,3‐trans‐substituted derivatives with exception of CD3OD which predominantly yields the cis‐product.
ChemInform Abstract: Ruthenium‐Triggered Ring Opening of Ethynylcyclopropanes: [3 + 2] Cycloaddition with Aldehydes and Aldimines Involving Metal Allenylidene Intermediates
Authors: Miyake Yoshihiro , Endo Satoshi , Moriyama Taichi , Sakata Ken , Nishibayashi Yoshiaki
Published: June 2013

The title reaction of ethynylcyclopropanes with aldehydes and aldimines gives the corresponding 2‐ethynyltetrahydrofurans or ‐pyrrolidines in high yields.
ChemInform Abstract: Hydroxorhodium/Chiral Diene Complexes as Effective Catalysts for the Asymmetric Arylation of 3‐Aryl‐3‐hydroxyisoindolin‐1‐ones.
Authors: Nishimura Takahiro , Noishiki Akira , Ebe Yusuke , Hayashi Tamio
Published: June 2013

Title reaction leads to isoindoline‐1‐ones bearing an α‐triaryl‐substituted stereogenic center in the presence of a hydroxorhodium/chiral diene catalyst.
ChemInform Abstract: Copper‐Promoted Decarboxylative Direct C3‐Acylation of N‐Substituted Indoles with α‐Oxocarboxylic Acids.
Authors: Yu Lin , Li Pinhua , Wang Lei
Published: June 2013

Indole derivatives bearing a highly electron‐withdrawing cyano group or a free NH moiety failed to give the described acylation.
ChemInform Abstract: Sequential Deprotection—Cyclization Reaction: Stereoselective Synthesis of Azabicyclic β‐Enamino Ester Derivatives and (—)‐Indolizidine 209D.
Authors: Ponpandian Thanasekaran , Muthusubramanian Shanmugam
Published: June 2013

The key reaction in the present approach involves deprotection and subsequent ring closure of N‐Boc amino‐β‐ketoesters.
ChemInform Abstract: One‐Pot Synthesis of Disubstituted Imidazole Derivatives from α‐Azido Ketones Catalyzed by Potassium Ethylxanthate.
Authors: Chen Jun , Chen Wenteng , Yu Yongping , Zhang Guolin
Published: June 2013

Dimerization of aryl‐ or alkyl glyoxal imines generated in situ from α‐azido ketones in the presence of potassium ethylxanthate gives rise to new imidazole derivatives.
ChemInform Abstract: “All‐Water” One‐Pot Diverse Synthesis of 1,2‐Disubstituted Benzimidazoles: Hydrogen Bond Driven ′Synergistic Electrophile—Nucleophile Dual Activation′ by Water.
Authors: Kommi Damodara N. , Jadhavar Pradeep S. , Kumar Dinesh , Chakraborti Asit K.
Published: June 2013

The regiodefined synthesis of title compounds (IV) via a tandem arylaminoarylation‐reduction‐cyclization sequence is described.
ChemInform Abstract: Copper‐Catalyzed Synthesis of 2‐Arylbenzoxazoles in Tetrabutylammonium Bromide.
Authors: Ali Md Ashif , Suri Mamta , Punniyamurthy Tharmalingam
Published: June 2013

The cyclocondensation of 1‐bromo‐2‐iodobenzenes with benzamides is studied under conditions A).
ChemInform Abstract: Conjugate Addition versus Cycloaddition/Condensation of Nitro Compounds in Water: Selectivity, Acid—Base Catalysis, and Induction Period.
Authors: Guideri Luca , De Sarlo Francesco , Machetti Fabrizio
Published: June 2013

The reaction of nitroacetic esters or amides with electron‐deficient dipolarophiles in water affords selectively isoxazole derivatives as a result of cycloaddition‐condensation.
ChemInform Abstract: Copper(II) Triflate Promoted Multicomponent Catalytic Clubbing of Piperazinyl‐Thiazoloquinolines and Thiazolocoumarins as Antimicrobials.
Authors: Patel Rahul V. , Patel Jigar K. , Nile Shivraj H. , Park Se Won
Published: June 2013

38 Title compounds of type (IV) and (VI) are prepared.
ChemInform Abstract: Palladium‐Catalyzed Cross‐Coupling of 1,4‐Disubstituted 5‐Iodo‐1,2,3‐triazoles with Organotin Reagents.
Authors: Carcenac Yvan , David‐Quillot Franck , Abarbri Mohamed , Duchene Alain , Thibonnet Jerome
Published: June 2013

The desired 5‐vinyl‐1,2,3‐triazoles can be prepared as synthetically important subunits in an efficient manner from title compounds (III).
ChemInform Abstract: Enantioselective Synthesis of 3,4‐Disubstituted cis‐ and trans‐1,2,5‐Thiadiazolidine‐1,1‐dioxides as Precursors for Chiral 1,2‐Diamines.
Authors: Schuettler Christian , Li‐Boehmer Zhen , Harms Klaus , von Zezschwitz Paultheo
Published: June 2013

For the first time the transformation in both cis‐ and trans‐thiadiazolines is achieved via diastereoselective hydride addition [(II) → (III)] and subsequent novel isomerization [(III) → (IV)].
ChemInform Abstract: Unusual Annulation Reaction of Electron‐Deficient Alkenes with Enamines: An Easy Access to Stereocontrolled 4‐Fluoroalkylated 3,4‐Dihydro‐2H‐pyrans.
Authors: Morigaki Atsunori , Tsukade Kazuki , Arimitsu Satoru , Konno Tsutomu , Kubota Toshio
Published: June 2013

The one‐pot reaction of enamines (I) and (VII) with enones (II) and (V) affords 4‐fluoroalkylated dihydropyrans as major products.
ChemInform Abstract: Palladium‐Catalyzed Cascade Reactions of 3‐Iodochromones with Aryl Iodides and Norbornadiene Leading to Annulated Xanthones.
Authors: Cheng Ming , Yan Jianwei , Hu Feng , Chen Hong , Hu Youhong
Published: June 2013

The reaction is proposed to proceed via an initial Heck reaction followed by a sp2‐sp3‐coupling, reductive elimination and a final retro‐Diels—Alder step.
ChemInform Abstract: Design, Synthesis and Biological Evaluation of Novel 7‐Mercaptocoumarin Derivatives as α1‐Adrenoceptor Antagonists.
Authors: Xie Sai‐Sai , Wang Xiao‐Bing , Li Jiang‐Yan , Kong Ling‐Yi
Published: June 2013

Starting compound (I) is prepared in a 4‐step sequence from resorcinol.
ChemInform Abstract: Direct Site‐Selective Arylation of Enamides via a Decarboxylative Cross‐Coupling Reaction.
Authors: Gigant Nicolas , Chausset‐Boissarie Laetitia , Gillaizeau Isabelle
Published: June 2013

The mono‐ or difunctionalization by the new site‐selective arylation of enamides can be controlled by the electronic density of protecting group on the N‐atom.
ChemInform Abstract: A Versatile C—H Functionalization of Tetrahydroisoquinolines Catalyzed by Iodine at Aerobic Conditions.
Authors: Dhineshkumar Jayaraman , Lamani Manjunath , Alagiri Kaliyamoorthy , Prabhu Kandikere Ramaiah
Published: June 2013

A novel iodine‐catalyzed oxidative cross‐coupling reaction of tetrahydroisoquinolines with various nucleophiles is described and a tentative reaction mechanism involving a radical intermediate is discussed briefly.
ChemInform Abstract: Molecular Iodine Catalyzed Cross‐Dehydrogenative Coupling Reaction Between Two sp3 C—H Bonds Using Hydrogen Peroxide.
Authors: Nobuta Tomoya , Tada Norihiro , Fujiya Akitoshi , Kariya Atsumasa , Miura Tsuyoshi , Itoh Akichika
Published: June 2013

A variety of 1‐substituted N‐aryltetrahydroisoquinolines is synthesized by aza‐Henry and by oxidative Mannich reactions.
ChemInform Abstract: Synthesis of Functionalized Indolizidines Through Pauson—Khand Cycloaddition of 2‐Allylpyrrolidines.
Authors: McCormack Michael P. , Waters Stephen P.
Published: June 2013

It allows a mild, convenient, and stereoselective approach to functionalized indolizidines of biological interest.
ChemInform Abstract: “Base Effect” in the Auto‐Tandem Palladium‐Catalyzed Synthesis of Amino‐Substituted 1‐Methyl‐1H‐α‐carbolines.
Authors: Yadav Ashok K. , Verbeeck Stefan , Hostyn Steven , Franck Philippe , Sergeyev Sergey , Maes Bert U. W.
Published: June 2013

A regioselective auto‐tandem Pd‐catalyzed process consisting of intramolecular direct arylation and a consecutive intermolecular Buchwald‐Hartwig reaction is developed.
ChemInform Abstract: Catalytic Alkene Cyclization Reactions for the Stereoselective Synthesis of Complex “Terpenoid‐Like” Heterocycles.
Authors: Moore Jared T. , Soldi Cristian , Fettinger James C. , Shaw Jared T.
Published: June 2013

The active catalyst in this reaction is demonstrated to be protic acid.
ChemInform Abstract: One‐Pot Three‐Component Synthesis of Functionalized Spirooxindoles in Gluconic Acid Aqueous Solution.
Authors: Guo Rui‐Yun , Wang Ping , Wang Guo‐Dong , Mo Li‐Ping , Zhang Zhan‐Hui
Published: June 2013

This is a general, efficient, and green method for the synthesis of the title compounds in high yields.
ChemInform Abstract: Efficient Access to 2,7‐Diarylated Pyrido[3,2‐d]pyrimidines Involving Regioselective Pallado‐dehalogenation and Suzuki Cross‐Coupling Reactions.
Authors: Tikad Abdellatif , Dehbi Oussama , Akssira Mohamed , Aadil Mina , Massip Stephane , Leger Jean‐Michel , Jarry Christian , Guillaumet Gerald , Routier Sylvain
Published: June 2013

The selective monodechlorination of substrate (I) to the 2,7‐dichloro derivative (II) is developed and mono‐ and bis‐coupling reactions of the latter are studied.
ChemInform Abstract: Multifold Bond Cleavage and Formation Between MeOH and Quinoxalines (or Benzothiazoles): Synthesis of Carbaldehyde Dimethyl Acetals.
Authors: Liu Yunkui , Jiang Bo , Zhang Wei , Xu Zhenyuan
Published: June 2013

K2S2O8‐mediated treatment of various quinoxalines with MeOH allows a convenient, acid‐, aldehyde‐, and transition metal‐free access to carbaldehyde dimethyl acetals of type (III).
ChemInform Abstract: Palladium‐Catalyzed Oxidative Cycloaddition Through C—H/N—H Activation: Access to Benzazepines.
Authors: Wang Lei , Huang Jiayao , Peng Shiyong , Liu Hui , Jiang Xuefeng , Wang Jian
Published: June 2013

Benzazepines are readily prepared by a one‐pot palladium‐catalyzed oxidative cycloaddition of isatins with various alkynes.
ChemInform Abstract: Synthesis of Novel Benzotriazoloazepine Derivatives.
Authors: Zhang Wei , Han Rong‐Bi , Zhang Wen‐Bin , Jiang Ri‐Shan , Piao Feng‐Yu
Published: June 2013

Benzotriazoloazepine derivatives with different anticonvulsant activities are synthesized starting from 7‐methoxy‐2,3,4,5‐tetrahydro‐1H‐2‐benzo[c]azepin‐1‐one (I).
ChemInform Abstract: Chiral NHC/Cu(I)‐Catalyzed Asymmetric Hydroboration of Aldimines: Enantioselective Synthesis of α‐Amido Boronic Esters.
Authors: Zhang Shu‐Sheng , Zhao Yi‐Shuang , Tian Ping , Lin Guo‐Qiang
Published: June 2013

The transformation proceeds smoothly at room temperature providing the desired esters (III) with enantioselectivities up to 84%.
ChemInform Abstract: Bespoke Synthesis of Unsymmetrical Diaminoboranes by Alkaline Earth Catalysis.
Authors: Bellham Peter , Hill Michael S. , Kociok‐Koehn Gabriele , Liptrot David J.
Published: June 2013

Ca or Mg(NTms2)2 are found to be effective catalysts for the formation of unsymmetrical diaminoboranes (III), by dehydrocoupling of amine boranes (I) and protic amines (II).
ChemInform Abstract: Generation and Alkylation of 2‐Boryl Allylic Sulfone Anions.
Authors: Altenhofer Erich F. , Harmata Michael
Published: June 2013

The deprotonation and electrophilic trapping of borylated allylic sulfone (I) results in the formation of the corresponding alkylated products (III).
ChemInform Abstract: Synthesis of Cyclic α‐Aminophosphonates Through Copper‐Catalyzed Enamine Activation.
Authors: Han Junbin , Paton Robert S. , Xu Bo , Hammond Gerald B.
Published: June 2013

The methodology represents a convenient approach to α‐phosphoryl‐substituted 5‐ and 6‐membered N‐heterocycles, which are of biological significance.
ChemInform Abstract: Collective Total Synthesis of Englerin A (Ia) and B (Ib), Orientalol E (Ic) and F (II), and Oxyphyllol (Id): Application of the Organocatalytic [4 + 3] Cycloaddition Reaction.
Authors: Wang Jie , Chen Shu‐Guang , Sun Bing‐Feng , Lin Guo‐Qiang , Shang Yong‐Jia
Published: June 2013

The key step of this synthesis of the title compounds (respectively their enantiomers) is an organocatalyzed asymmetric [4 + 3] cycloaddition yielding key intermediate (V).
ChemInform Abstract: New ent‐Abietane and ent‐Kaurane Diterpenoids from Isodon rubescens.
Authors: Sun Han‐Dong , et al. et al.
Published: June 2013

isolation, structure elucidation and cytotoxicity of ent‐abierubesins A—E (I)—(IV) and new ent‐kauranoids, hubeirubesins A (V) and B (VI)
ChemInform Abstract: Water‐Dependent Reduction of Carbohydrate Azides by Dithiothreitol.
Authors: Komarova Bozhena S. , Maryasina Sofia S. , Tsvetkov Yury E. , Nifantiev Nikolay E.
Published: June 2013

A broad spectrum of carbohydrate‐derived azides can be efficiently reduced by DTT in the presence or absence of base to the corresponding amines.
ChemInform Abstract: Schisphenlignans A—E: Five New Dibenzocyclooctadiene Lignans from Schisandra sphenanthera
Authors: Sun Han‐Dong , et al. et al.
Published: June 2013

isolation, structure and insulin sensitivity activity
ChemInform Abstract: The Structure of Pd—M Supported Catalysts Used in the Hydrogen Transfer Reactions (M: In, Bi and Te)
Authors: Witonska Izabela A. , Walock Michael J. , Dziugan Piotr , Karski Stanislaw , Stanishevsky Andrei V.
Published: June 2013

Review: 51 refs.
ChemInform Abstract: Mesoporous TiO2: Preparation, Doping, and as a Composite for Photocatalysis
Authors: Zhou Wei , Fu Honggang
Published: June 2013

Review: 99 refs.