bluuebunny/crossref_metadata_2025_split huggingface dataset:
Ag/polyaniline nanocomposites: Synthesize, characterization, and application to the detection of dopamine and tyrosine
Authors: Massoumi Bakhshali , Fathalipour Soghra , Massoudi Abdolhossein , Hassanzadeh Mohammad , Entezami Ali Akbar 
Published: June 2013

ABSTRACTIn this research, Ag/Polyaniline (PANI) nanocomposites were synthesized successfully by the chemical oxidative polymerization of aniline in the presence of 4‐aminothiophenol (4‐ATP) capped colloidal Ag nanoparticles (NPs). First, Ag colloidal NPs were prepared by borohydride reduction of AgNO3 in the presence of 4‐ATP as a stabilizer. Then, polymerization of aniline in the presence of Ag NPs was carried out by ammonium persulfate as an oxidant at room temperature. TEM, SEM, XRD, FTIR, EDX, TGA, and UV–vis studies were done for the morphological, structural, thermal, and optical characterization of the Ag/PANI nanocomposite. Furthermore, Ag/PANI nanocomposites were immobilized on the surface of a glassy carbon electrode (GCE) and electroactivity behavior was investigated by cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The obtained Ag/PANI modified GCE showed high catalytic activity for the oxidation of dopamine (DA) and tyrosine (Tyr). The peak current of differential pulse voltammograms of DA and Tyr increased linearly with their concentration in the ranges of 2.17–5.74 μM Tyr and 18.5–72.2 μM DA. The detection limits for DA and Tyr were 0.002 and 0.009 μM, respectively. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 130: 2780–2789, 2013
The Effects of co‐solvents on the reaction of amino‐terminated polystyrene with fullerene
Authors: Alexander Amy , Eller Jonathan , Ali Shariq , Berry Brian C. 
Published: June 2013

ABSTRACTPolymer tethered C60 fullerenes (PTFs) were synthesized by reacting amine terminated polystyrenes with fullerene under ambient conditions. While toluene was employed as the primary solvent in the synthesis, polar co‐solvents were incorporated in various ratios to determine their effect on the reaction yield and nature of the product. The resultant PTFs were analyzed by GPC and UV–Vis spectroscopy to determine the number of adducts. The addition of a polar co‐solvent was found to significantly affect the reaction rate, yield, and total number of substitutions on the fullerene. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 130: 2796–2800, 2013
Synthesis and properties of methyl hexahydrophthalic anhydride‐cured fluorinated epoxy resin 2,2‐bisphenol hexafluoropropane diglycidyl ether
Authors: Yin Miao , Yang Li , Li Xiu‐yun , Ma Han‐bing 
Published: June 2013

ABSTRACTThe fluorinated epoxy resin, 2,2‐bisphenol hexafluoropropane diglycidyl ether (DGEBHF) was synthesized through a two‐step procedure, and the chemical structure was confirmed by 1H nuclear magnetic resonance (NMR), 13C NMR, and Fourier transform infrared (FTIR) spectra. Moreover, DGEBHF was thermally cured with methyl hexahydrophthalic anhydride (MHHPA). The results clearly indicated that the cured DGEBHF/MHHPA exhibited higher glass transition temperature (Tg 147°C) and thermal decomposition temperature at 5% weight loss (T5 372°C) than those (Tg 131.2°C; T5 362°C) of diglycidyl ether of bisphenol A (DGEBA)/MHHPA. In addition, the incorporation of bis‐trifluoromethyl groups led to enhanced dielectric properties with lower dielectric constant (Dk 2.93) of DGEBHF/MHHPA compared with cured DGEBA resins (Dk 3.25). The cured fluorinated epoxy resin also gave lower water absorption measured in two methods relative to its nonfluorinated counterparts. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 130: 2801–2808, 2013
Alterung von Bewehrungsgittern aus Polyester
Authors: Müller Werner 
Published: June 2013

AbstractDurch die hydrolytische Alterung ändert sich die Zugfestigkeit eines Polyester‐Bewehrungsgitters im Laufe der Zeit. Nach den Empfehlungen für den Entwurf und die Berechnung von Erdkörpern mit Bewehrung aus Geokunststoffen (EBGEO) der DGGT wird dieser Effekt durch einen Abminderungsfaktor bei der Bemessung berücksichtigt. Es ist zwar im Prinzip festgelegt, wie man bei der Bestimmung eines solchen Faktors für eine chemisch bedingte Materialveränderung vorgehen soll (ISO/TR 20432), es bleiben jedoch große Freiheiten bei der Umsetzung. Die Fragen, die sich daraus bei Bewehrungsgittern aus Polyester ergeben, werden diskutiert. Es werden Bausteine eines einheitlichen Verfahrens vorgeschlagen, das sich nicht nur auf den Festigkeitsverlust, sondern auch auf die molekulare Veränderung konzentriert.Aging of PET geodridsDue to hydrolytic aging of the polyester material the tensile strength of PET‐geogrids will change with time. According to the design recommendations (EBGEO) of the German Geotechnical Society DGGT this effect has to be taken into account by a factor of reduction. In principle the determination of the factor for chemical degradation is described in ISO/TR 20432. However, there is a considerable discretionary leeway in realizing the procedure for a special type of product. The questions, which occur from this for PET‐geogrids, will be discussed in detail. Against this background building stones of a well‐defined procedure are suggested, which considers not only mechanical degradation but also degradation in molecular weight.
Ganzheitliche Planung eines Hochwasserrückhaltebeckens
Authors: Küenzlen Jürgen H. R. , Lind Dieter 
Published: June 2013

AbstractDie vorgestellte private Planungsvariante eines Hochwasserrückhaltebeckens zeigt, dass auch rein technische Ingenieurbauwerke unter ganzheitlicher Betrachtung ein Gewinn für die gesamte Umgebung – und nicht alleine für den Hochwasserschutz – sein können. Bei der Planung und Ausführung derartiger Bauwerke darf sich der planende Ingenieur nicht von seinem Technikbauwerk einnehmen lassen. Es ist viel mehr notwendig, das Projekt in seiner ganzen Dimension und unter Einbeziehung aller Belange zu betrachten und zu lösen. Dabei ist es unerlässlich, frühzeitig alle Beteiligten einzubeziehen und sich mit deren Vorstellungen auseinanderzusetzen, wobei auch für einen Ingenieur ein gewisses “Fingerspitzengefühl” im Umgang mit von der Baumaßnahme besonders betroffenen Anwohnern unverzichtbar ist. Ein reines “sich darauf verlassen”, dass bei öffentlichen Bauprojekten die Projektlösung alleine durch “Verwaltungsmacht” bzw. gerichtliche Auseinandersetzungen herbeigeführt werden kann, ist im 21. Jahrhundert auf keinen Fall mehr zeitgemäß. Auch das bequeme Zurückziehen auf das einfache und fast immer zutreffende Argument “Kosteneinsparung” kann nicht allein gelten, da bei Bauwerken mit Veränderung und Verlegung ganzer Flussläufe über zeitliche Dimensionen von 100 Jahren und mehr nachgedacht werden muss.Holistic planning of a flood control reservoirThe presented private planning option of a flood control reservoir shows that even solely technical engineering structures like flood control reservoirs can prove to be beneficial for the whole environment and not only with regard to flood prevention when looked at in their entirety. The planning engineer, however, must not only concentrate on the technical structure when it comes to planning and execution of structures like that. In fact, it is necessary to regard and solve this project in its whole dimension, involving all issues. It is essential to include all parties involved and to deal with their conceptions at an early stage. This makes it indispensable for the engineer to have a certain intuition when it comes to dealing with residents who are strongly affected by the building project. In the 21st century it is not contemporary anymore to just “rely” on the notion that the solution for a project can simply be brought about by “administrative power” respectively judicial dispute. Moreover, the convenient retraction to the simple and almost always applicable argument of “cost savings” cannot solely apply because structures like this kind of retention reservoirs including the transformation and relocation of complete river courses require the need to take dimensions of 100 years and more into account.
Valproate prescriptions for nonepilepsy disorders in reproductive‐age women
Authors: Adedinsewo Demilade A. , Thurman David J. , Luo Yao‐Hua , Williamson Rebecca S. , Odewole Oluwaseun A. , Oakley Godfrey P. 
Published: June 2013

BACKGROUNDScientific evidence has consistently shown taking valproate during pregnancy increases risks of congenital malformations and cognitive impairment. As such, elimination of its use would be an important step in birth defects prevention. There are guidelines discouraging its use among women with epilepsy, but none exists for women without epilepsy, nor is the prevalence of valproate for nonepilepsy indications known.METHODSUsing de‐identified data from the National Hospital and Ambulatory Medical Care Surveys (1996–2007), we examined individual prescriptions for reproductive‐age adolescent girls and adult women ages 15 to 44 years in the United States, and estimated the number of antiepileptic drug and valproate prescriptions in the aggregate. We classified our study population using International Classification of Diseases, Ninth Revision, Clinical Modification diagnosis codes, as women with epilepsy and women without epilepsy. The prevalence of antiepileptic drug and valproate prescriptions among women without epilepsy was estimated as prescriptions per 1000 patient visits for every 3‐year time interval and the overall study period.RESULTSWe found 83% of valproate prescriptions were issued to women without epilepsy and 74% of these were for psychiatric diagnoses. The prevalence of antiepileptic drug prescriptions among women without epilepsy tripled during the study period (10.3 [1996–1998] vs. 34.9 [2005–2007] per 1000 patient visits), whereas valproate prescriptions remained relatively stable (3.1 [1996–1998] vs. 3.7 [2005–2007] per 1000 patient visits).CONCLUSIONMost women of reproductive age who receive a valproate prescription do not have epilepsy. Valproate prescriptions did not decline, despite increasing knowledge of its teratogenicity. Reducing valproate use among women of reproductive age, especially among those who use the drug for psychiatric indications, would prevent birth defects and cognitive deficits. Birth Defects Research (Part A) 97:403–408, 2013. © 2013 Wiley Periodicals, Inc.
Ein Fahrbahnübergangssystem als Fingerkonstruktion mit einer direkten Einleitung der Verankerungskräfte in den Beton
Authors: Braun Joachim , Tusche Jens 
Published: June 2013

AbstractDie Fingerkonstruktion ist eine seit Jahrzehnten eingesetzte Fahrbahnübergangskonstruktion. Durch die Form der Finger erzeugt dieser Fahrbahnübergang besonders geringe Schallemissionen und zeichnet sich durch einen hervorragenden Überfahrkomfort aus. Eine neuartige Verankerungslösung, welche die Verankerungskraft mithilfe spezieller Verankerungskörper direkt aus dem Finger in die Brückenkonstruktion weiterleitet, wird derzeit für die Regelprüfung entwickelt und hier vorgestellt. Für die Sicherstellung der Wasserdichtigkeit stehen inzwischen dauerhafte Lösungen zur Verfügung.An expansion joint system as a finger construction with direct transfer of the anchoring forces into the concreteFinger construction is an expansion joint construction that has been employed for decades. The finger form means that this expansion joint produces particularly low noise emissions and gives it an excellent comfort when passing by vehicles. An innovative anchoring solution, which transfers the anchoring force with the help of special anchoring elements directly from the finger into the bridge construction, is currently in development for standard testing and is presented here. To ensure water‐tightness of the finger joint, durable solutions have been developed in the meantime.
Diazido Mixed‐Amine Platinum(IV) Anticancer Complexes Activatable by Visible‐Light Form Novel DNA Adducts
Authors: Zhao Yao , Woods Julie A. , Farrer Nicola J. , Robinson Kim S. , Pracharova Jitka , Kasparkova Jana , Novakova Olga , Li Huilin , Salassa Luca , Pizarro Ana M. , Clarkson Guy J. , Song Lijiang , Brabec Viktor , Sadler Peter J. 
Published: June 2013

AbstractPlatinum diam(m)ine complexes, such as cisplatin, are successful anticancer drugs, but suffer from problems of resistance and side‐effects. Photoactivatable PtIV prodrugs offer the potential of targeted drug release and new mechanisms of action. We report the synthesis, X‐ray crystallographic and spectroscopic properties of photoactivatable diazido complexes trans,trans,trans‐[Pt(N3)2(OH)2(MA)(Py)] (1; MA=methylamine, Py=pyridine) and trans,trans,trans‐[Pt(N3)2(OH)2(MA)(Tz)] (2; Tz=thiazole), and interpret their photophysical properties by TD‐DFT modelling. The orientation of the azido groups is highly dependent on H bonding and crystal packing, as shown by polymorphs 1 p and 1 q. Complexes 1 and 2 are stable in the dark towards hydrolysis and glutathione reduction, but undergo rapid photoreduction with UVA or blue light with minimal amine photodissociation. They are over an order of magnitude more potent towards HaCaT keratinocytes, A2780 ovarian, and OE19 oesophageal carcinoma cells than cisplatin and show particular potency towards cisplatin‐resistant human ovarian cancer cells (A2780cis). Analysis of binding to calf‐thymus (CT), plasmids, oligonucleotide DNA and individual nucleotides reveals that photoactivated 1 and 2 form both mono‐ and bifunctional DNA lesions, with preference for G and C, similar to transplatin, but with significantly larger unwinding angles and a higher percentage of interstrand cross‐links, with evidence for DNA strand cross‐linking further supported by a comet assay. DNA lesions of 1 and 2 on a 50 bp duplex were not recognised by HMGB1 protein, in contrast to cisplatin‐type lesions. The photo‐induced platination reactions of DNA by 1 and 2 show similarities with the products of the dark reactions of the PtII compounds trans‐[PtCl2(MA)(Py)] (5) and trans‐[PtCl2(MA)(Tz)] (6). Following photoactivation, complex 2 reacted most rapidly with CT DNA, followed by 1, whereas the dark reactions of 5 and 6 with DNA were comparatively slow. Complexes 1 and 2 can therefore give rapid potent photocytotoxicity and novel DNA lesions in cancer cells, with no activity in the absence of irradiation.
Diastereoselective Hydrogen‐Transfer Reactions: An Experimental and DFT Study
Authors: Godin François , Prévost Michel , Gorelsky Serge I. , Mochirian Philippe , Nguyen Maud , Viens Frédérick , Guindon Yvan 
Published: June 2013

AbstractRadical reductions of halogenated precursors bearing a heterocycle exo (α) to the carbon‐centered radical proceed with enhanced anti‐selectivity, a phenomenon that we termed “exocyclic effect”. New experimental data and DFT calculations at the BHandHLYP/TZVP level demonstrate that the origin of the exocyclic effect is linked to the strain energy required for a radical intermediate to reach its reactive conformation at the transition state (ΔE≠strain). Furthermore, radical reductions of constrained THP systems indicate that high 2,3‐anti inductions are reached only when the radical chain occupies an equatorial orientation. Hydride deliveries to different acyclic substrates and calculations also suggest that the higher anti‐selectivities obtained with borinate intermediates are not related to the formation of a complex mimicking an exocycle. From a broader standpoint, this study reveals important conformational factors for reactions taking place at a center vicinal to a heterocycle or an α‐alkoxy group.
ChemInform Abstract: Structural Complexity Meets Transport and Magnetic Anisotropy in Single Crystalline Ln30Ru4Sn31 (Ln: Gd, Dy).
Authors: Schmitt Devin C. , Haldolaarachchige Neel , Prestigiacomo Joseph , Karki Amar , Young David P. , Stadler Shane , Jin Rongying , Chan Julia Y. 
Published: June 2013

AbstractSingle crystals of the title compounds are grown from the elements (Ln:Ru:Sn = 12:6:11; evacuated silica tube, 1260 °C, 36 h).
ChemInform Abstract: Synthesis and Structure Determination of CaSi1/3B2/3O8/3: A New Calcium Borosilicate.
Authors: Veron Emmanuel , et al. et al. 
Published: June 2013

AbstractCrystalline CaSi1/3B2/3O8/3 is observed in situ by high‐temperature XRD during heating (first XRD reflections at 740 °C) from a corresponding glassy composition in the CaO—SiO2—B2O3 ternary system prepared by CaCO3, SiO2, and B2O3 mixtures (Pt crucible, 1200—1500 °C, 2 h, quenching).
ChemInform Abstract: Structure and Luminescence Properties of Bi3+ Activated Ca12Al14O32Cl2 Phosphors.
Authors: Yang Zhigang , Zhao Zhengyan , Wen Yan , Wang Yuhua 
Published: June 2013

AbstractCa12Al14O32Cl2:xBi3+ (0.005 ≤ x ≤ 0.7) phosphors are synthesized by solid state reaction of CaCO3, Al2O3, SiO2, NH4Cl, and Bi2O3 (air, alumina crucible, 1150 °C, 10 h).
ChemInform Abstract: Spin and Dipole Ordering in Ni2InSbO6 and Ni2ScSbO6 with Corundum‐Related Structure.
Authors: Mathieu R. , et al. et al. 
Published: June 2013

AbstractThe title compounds are prepared by solid state reaction of NiO, Sc2O3 or In2O3, and Sb2O5 (1300 °C, 24 h).
ChemInform Abstract: Polymer‐Assisted Synthesis of LiNi2/3Mn1/3O2 Cathode Material with Enhanced Electrochemical Performance.
Authors: Lu Yang‐Xuan , Jiang Yan , Yang Ze , Han Jian‐Tao , Huang Yun‐Hui , Ma Jun 
Published: June 2013

AbstractThe title cathode material for Li‐ion batteries is synthesized by a polymer‐assisted solid state reaction method starting with the metal acetates, oxalic acid, and polyethylene glycol (PEG) 400 (800 °C, 5 and 10 h).
ChemInform Abstract: Reactions of Hydrated Singly Charged First‐Row Transition‐Metal Ions M+(H2O)n (M: V, Cr, Mn, Fe, Co, Ni, Cu, and Zn) Toward Nitric Oxide in the Gas Phase.
Authors: van der Linde Christian , Hoeckendorf Robert F. , Balaj O. Petru , Beyer Martin K. 
Published: June 2013

AbstractReactions of M+(H2O)n (M: V, Cr, Mn, Fe, Co, Ni, Cu, and Zn; n ≤ 40) with NO are investigated by Fourier transform ion cyclotron resonance mass spectrometry.
ChemInform Abstract: Charge Separation Promoted Activation of Molecular Oxygen by Neutral Gold Clusters.
Authors: Woodham Alex P. , Meijer Gerard , Fielicke Andre 
Published: June 2013

AbstractThe interactions of neutral gold clusters Aun (4 ≤ n ≤ 21) with molecular oxygen in the gas phase are investigated by infrared multiple photon dissociation spectroscopy and quantum chemical DFT calculations in order to get more information of the origin of the high catalytic activity of gold nano‐ and sub‐nanoparticles in low‐temperature oxidation reactions.
ChemInform Abstract: closo‐Hydroborates from Liquid Ammonia: Synthesis and Crystal Structures of [Li(NH3)4]2 [B12H12]·2NH3, Rb2[B12H12]·8NH3, Cs2[B12H12]·6NH2 and Rb2[B10H10]·5NH3.
Authors: Kraus Florian , Panda Monalisa , Mueller Thomas , Albert Barbara 
Published: June 2013

AbstractThe title compounds containing 20.04—52.23 wt.% NH3 and 5.94—13.01 wt.% hydrogen are obtained by reacting the distilled alkali metals with (NBu4)2[B12H12] and liq.
ChemInform Abstract: Crystal and Magnetic Structures and Physical Properties of a New Pyroxene NaMnGe2O6 Synthesized under High Pressure.
Authors: Zhou Jianshi , et al. et al. 
Published: June 2013

AbstractThe new title compound is synthesized by reaction of a stoichiometric mixture of Na2CO3, Mn2O3, and GeO2 in a Walker‐type multianvil module (3 GPa, 800 °C, 24 h).
ChemInform Abstract: SrFe0.5Ru0.5O2: Square‐Planar Ru2+ in an Extended Oxide.
Authors: Romero Fabio Denis , Burr Steven J. , McGrady John E. , Gianolio Diego , Cibin Giannantonio , Hayward Michael A. 
Published: June 2013

AbstractThe title compound is prepared by reduction of SrFe0.5Ru0.5O3 with CaH2 at 400 °C for 96 h.
ChemInform Abstract: Synthesis of Ce2Rh3Ge5 Crystals from a Bismuth Flux.
Authors: Vosswinkel Daniel , Poettgen Rainer 
Published: June 2013

AbstractThe title compound is prepared from the elements in a bismuth flux (Ce:Rh:Ge = 2:1:2; evacuated silica ampule, 1320 K, 1 h) and characterized by single crystal XRD.
ChemInform Abstract: Sugar‐Based Monodentate Phosphoramidite Ligands for Cu‐Catalyzed Enantioselective Conjugate Addition to Enones.
Authors: Bauer Tomasz , Majdecki Maciej , Jurczak Janusz 
Published: June 2013

AbstractNovel monodentate phosphoramidite ligands (I) based on amines derived from α‐D‐xylofuranose are synthesized and applied to the cuprous triflate‐catalyzed conjugate addition to acyclic and cyclic enones.
ChemInform Abstract: Enantio‐ and Regioselective Intermolecular Benzylic and Allylic C—H Bond Amination.
Authors: Nishioka Yota , Uchida Tatsuya , Katsuki Tsutomu 
Published: June 2013

AbstractThe new Ru(CO)—salen complex RUCAL is used as an effective catalyst for asymmetric benzylic and allylic C—H bond amination using 2‐(trimethylsilyl)ethanesulfonyl azide as the nitrene source.
ChemInform Abstract: Solid‐State and Solvent‐Free Synthesis of Azines, Pyrazoles, and Pyridazinones Using Solid Hydrazine.
Authors: Lee Byeongno , Kang Philjun , Lee Kyu Hyung , Cho Jaeheung , Nam Wonwoo , Lee Won Koo , Hur Nam Hwi 
Published: June 2013

AbstractSolid hydrazinium carboxylate reacts with α, β, or γ‐diketo compounds under neat conditions A) or B).
ChemInform Abstract: Selective Synthesis of Unsymmetrical Ethers from Different Alcohols Catalyzed by Sodium Bisulfite.
Authors: Yu Jun‐Lai , Wang Hui , Zou Kai‐Feng , Zhang Jia‐Rui , Gao Xiang , Zhang Dan‐Wei , Li Zhan‐Ting 
Published: June 2013

AbstractThe reaction is proposed to proceed via intermediary benzylcations.
ChemInform Abstract: Stereocontrolled Routes to 4‐Methoxypentadienoates for Use in Natural Product Synthesis.
Authors: Craven Philip G. E. , Taylor Richard J. K. 
Published: June 2013

AbstractMethanolysis of epoxides (I) and (VI) is achieved in complementary ways by employing either Pd‐catalyzed or acid‐mediated procedures.
ChemInform Abstract: Pyrrolidine‐Catalyzed Novel Domino Reaction for the Synthesis of Polysubstituted 4‐Oxocyclohexanecarbaldehyde Derivatives.
Authors: Bao Feng‐Zu , Wang Xiao‐Bing , Kong Ling‐Yi 
Published: June 2013

AbstractThe novel reaction of ketones with α,β‐unsaturated aldehydes allows the synthesis of the title compounds via aldol condensation followed by a tandem inter‐Michael — intra‐Michael addition.
ChemInform Abstract: An Easy Access to Fluoroalkanes by Deoxygenative Hydrofluorination of Carbonyl Compounds via Their Tosylhydrazones.
Authors: Yadav Arvind K. , Srivastava Vishnu P. , Yadav Lal Dhar S. 
Published: June 2013

AbstractAn efficient synthesis of monofluoroalkanes (II) by deoxygenative hydrofluorination of carbonyl compounds via their tosylhydrazones surrogates (I) is presented.
ChemInform Abstract: Stereoselective Synthesis of anti‐1,3‐Aminoalcohols via Reductive Opening of 4‐Amidotetrahydropyrans Derived from the Prins/Ritter Sequence.
Authors: Yadav J. S. , Reddy Y. Jayasudhan , Reddy P. Adi Narayana , Reddy B. V. Subba 
Published: June 2013

Abstract4‐Amidotetrahydropyrans (IV), prepared by a Prins/Ritter reaction sequence, are readily converted into desired N‐acyl‐aminoalcohols (VI) by a Finkelstein reaction of tosylates (IV) followed by reductive opening of the tetrahydropyran ring of resulting iodides (V).
ChemInform Abstract: Reaction of Benzyne with Fluorinated 1,3‐Dicarbonyl Compounds.
Authors: Zahid Muhammad , Ibad Muhammad Farooq , Abilov Zharylkasyn A. , Langer Peter 
Published: June 2013

AbstractVarious fluorinated 1,5‐dicarbonyl compounds (III) are regioselectively obtained by the insertion of fluorinated 1,3‐dicarbonyl compounds (II) to benzyne.
ChemInform Abstract: Highly Enantioselective Three‐Component Reactions of tert‐Butyl Diazoacetate with Arylamines and Imines: An Efficient Synthesis of α,β‐Bis(arylamino) Acid Derivatives.
Authors: Jiang Liqin , Zhang Dan , Wang Zhongqing , Hu Wenhao 
Published: June 2013

Abstractas important structural motifs of natural products and therapeutic agents
ChemInform Abstract: Redox‐Controlled Selectivity of C—H Activation in the Oxidative Cross‐Coupling of Arenes.
Authors: Cambeiro Xacobe C. , Boorman Tanya C. , Lu Pengfei , Larrosa Igor 
Published: June 2013

AbstractElectron‐poor and electron‐rich arenes are readily converted to the corresponding biaryls through double C—H activation whereby one arene is used as an arylgold complex.