bluuebunny/crossref_metadata_2025 huggingface dataset:
Using anchor text for homepage and topic distillation search tasks
Authors: Wu Mingfang , Hawking David , Turpin Andrew , Scholer Falk
Published: March 2012

Past work suggests that anchor text is a good source of evidence that can be used to improve web searching. Two approaches for making use of this evidence include fusing search results from an anchor text representation and the original text representation based on a document's relevance score or rank position, and combining term frequency from both representations during the retrieval process. Although these approaches have each been tested and compared against baselines, different evaluations have used different baselines; no consistent work enables rigorous cross‐comparison between these methods. The purpose of this work is threefold. First, we survey existing fusion methods of using anchor text in search. Second, we compare these methods with common testbeds and web search tasks, with the aim of identifying the most effective fusion method. Third, we try to correlate search performance with the characteristics of a test collection. Our experimental results show that the best performing method in each category can significantly improve search results over a common baseline. However, there is no single technique that consistently outperforms competing approaches across different collections and search tasks.
Photocurrent Enhancement of Dye‐Sensitized Solar Cells owing to Increased Dye‐Adsorption onto Silicon‐Nanoparticle‐Coated Titanium‐Dioxide Films
Authors: Ha Eun‐Sung , Yoo Beomjin , Baik Hionsuck , Lee Yeonhee , Kim Kang‐Jin
Published: March 2012

The inverse‐micellar preparation of Si nanoparticles (Nps) was improved by utilizing sodium naphthalide. The Si Nps were subsequently functionalized with 4‐vinylbenzoic acid for their attachment onto TiO2 films of dye‐sensitized solar cells (DSSCs). The average diameter of the COOH‐functionalized Si (SiCOOH) Nps was 4.6(±1.7) nm. Depth profiling by secondary‐ion mass spectrometry revealed that the Si Nps were uniformly attached onto the TiO2 films. The number of RuII dye molecules adsorbed onto a TiO2 film that was treated with the SiCOOH Nps was 42 % higher than that on the untreated TiO2 film. As a result, DSSCs that incorporated the SiCOOH Nps exhibited higher short‐circuit photocurrent density and an overall energy‐conversion efficiency than the untreated DSSCs by 22 % and 27 %, respectively. This enhanced performance, mostly owing to the intramolecular charge‐transfer to TiO2 from the dye molecules that were anchored to the SiCOOH Nps, was confirmed by comparing the performance with two different RuII–bipyridine dyes (N719 and N749).
Advances in Copper‐Catalyzed CC Coupling Reactions and Related Domino Reactions Based on Active Methylene Compounds
Authors: Liu Yunyun , Wan Jie‐Ping
Published: March 2012

Active methylene compounds are a major class of reaction partners for CC bond formation with sp2 CX (X=halide) fragments. As one of the most‐classical versions of the Ullmann‐type coupling reaction, activated‐methylene‐based CC coupling reactions have been efficiently employed in a large number of syntheses. Although this type of reaction has long relied on noble‐metal catalysis, the renaissance of copper catalysis at the end of last century has led to dramatic developments in Ullmann CC coupling reactions. Owing to its low cost, abundance, as well as excellent catalytic activity, the exceptional atom economy of copper catalysis is gaining widespread attention in various organic synthesis. This review summarizes the advances in copper‐catalyzed intermolecular and intramolecular CC coupling reactions that use activated methylene species as well as in tandem reactions that are initiated by this transformation.
Carbazolyl Benzo[1,2‐b:4,5‐b′]difuran: An Ambipolar Host Material for Full‐Color Organic Light‐Emitting Diodes
Authors: Mitsui Chikahiko , Tsuji Hayato , Sato Yoshiharu , Nakamura Eiichi
Published: March 2012

We have designed an ambipolar material, 3,7‐bis[4‐(N‐carbazolyl)‐phenyl]‐2,6‐diphenylbenzo[1,2‐b:4,5‐b′]difuran (CZBDF), and synthesized it by zinc‐mediated double cyclization. Its physical properties clarified that CZBDF possesses a wide‐gap character, well‐balanced and high hole and electron mobilities of larger than 10−3 cm2 V−1 s−1, and a high thermal stability. Using CZBDF as a host material for heterojunction OLED devices, a full range of visible emission was obtained. Notably, CZBDF also enabled us to fabricate RGB‐emitting homojunction OLEDs, with performances comparable or superior to the heterojunction devices composed of several materials.
Subspace methods for dynamic model estimation in PAT applications
Authors: Thygesen Jonas Hoeg , van den Berg Frans W. J.
Published: March 2012

One primary goal in the application of process analytical technology tools is improved process monitoring and control. A second is to obtain a better understanding of how a normal process behaves (i.e. the normal dynamics). In order to perform feed‐forward control, time series models of the process data are required. Such models could be developed on the basis of known physical/chemical knowledge of the system (i.e. first principal or mechanistic modeling). However, very often, this is not possible because of the lack of sufficient information. This leads to the need of system identification (SI). One class of models within SI is the state space models, linear models that relate the input of the system at time k to the output at time k via estimation of the so‐called system states. State space models may be fitted using what is known as the subspace methods. Subspace methods are based on the projection of data on subspaces identified by, for example, the singular value decomposition of time‐shifted data during a training phase. This paper introduces state space models, illustrates how subspace methods are closely related to known chemometric tools, and how they can be applied in, for example, model‐based feed‐forward process monitoring and control. The concepts are illustrated using a data set from an intrinsically nonlinear milk coagulation process that can be approximated well by a linear dynamic model using a small set of virtual (or principal) states. We present an alternative process‐monitoring strategy where the dynamic components and boundary conditions of a developing milk coagulation batch are estimated in real‐time and compared to normal operating conditions. Copyright © 2012 John Wiley & Sons, Ltd.
Highly Hydrophilic Copolymers of N,N‐Dimethylacrylamide, Acrylamido‐2‐methylpropanesulfonic acid, and Ethylenedimethacrylate: Nanoscale Morphology in the Swollen State and Use as Exotemplates for Synthesis of Nanostructured Ferric Oxide
Authors: Centomo Paolo , Jeřábek Karel , Canova Davide , Zoleo Alfonso , Maniero Anna Lisa , Sassi Alessandro , Canton Patrizia , Corain Benedetto , Zecca Marco
Published: March 2012

The polymer framework of water‐swollen copolymers of N,N‐dimethylacrylamide, acrylamido‐2‐methylpropanesulfonic acid, and ethylenedimethacrylate (nominal cross‐linking degrees of 4, 8, and 20 mol %) is composed of highly expanded domains, with “pores” not less than 6 nm in diameter. When the 4 % cross‐linked copolymer (DAE 26‐4) is swollen with a 10−4 M solution of 4‐hydroxy‐2,2,6,6‐tetramethylpiperidine‐1‐oxyl (TEMPOL) in water, MeOH, EtOH, or nBuOH, the molecules of the paramagnetic probe rotate rapidly (τ<1000 ps) and as fast as in the bulk liquid in the case of water. The swelling degree of DAE 26‐4 is related to the Hansen solubility parameters of a number of liquids, including linear alcohols up to n‐octanol. It is also found that the rotational correlation time of TEMPOL in the copolymer swollen by water and the lightest alcohols increases with decreasing specific absorbed volume. Time‐domain NMR spectrometry of water‐swollen DAE 26‐4 shows that sorption of only 14 % of the liquid required for its complete swelling is enough for full hydration of the polymer chains. Accordingly, in fully swollen DAE 26‐4 the longitudinal relaxation time of water closely approaches the value of pure water. {13C} CP‐MAS NMR on partially and fully water swollen samples of DAE 26‐4 shows that swelling increases the mobility of the polymer chains, as clearly indicated by the narrowing of the best‐resolved peaks. DAE 26‐4 was used as an exotemplate for the synthesis of nanocomposites composed of the polymer and nanostructured Fe2O3 through a series of ion‐exchange/precipitation cycles. After the first cycle the nanoparticles are 3–4 nm in diameter, with practically unchanged size after subsequent cycles (up to five). In fact, the nanoparticle size never exceeded the diameter of the largest available pores. This suggests that the polymer framework controls the growth of the nanoparticles according to the template‐controlled synthesis scheme. Selected‐area electron diffraction, TEM, and high‐resolution electron microscopy show that the nanostructured inorganic phase is composed of hematite.
What Controls the Magnetic Interaction in bis‐μ‐Alkoxo MnIII Dimers? A Combined Experimental and Theoretical Exploration
Authors: Berg Nelly , Rajeshkumar Thayalan , Taylor Stephanie M. , Brechin Euan K. , Rajaraman Gopalan , Jones Leigh F.
Published: March 2012

The synthesis and magnetic characterisation of a series of bis‐μ‐alkoxide bridged MnIII dinuclear complexes of general formula [MnIII2(μ‐OR)2(biphen)2(ROH)x(L)y] (where R=Me, Et; H2biphen=2,2′‐biphenol and L=terminally bonded N‐donor ligand) is described, doubling the literature basis set for this type of complex. Building on these findings we have categorised all known μ‐OR bridged MnIII dinuclear complexes into one of three classifications with respect to their molecular structures. We have then employed DFT and MO calculations to assess all potential magneto‐structural correlations for this class of compound in order to identify the structural requirements for constructing ferromagnetic family members. Our analysis indicates that the most influential parameter which governs the exchange interaction in this class of compounds is the relative orientation of the JT axes of the MnIII atoms. A perpendicular orientation of the JT axes leads to a large ferromagnetic contribution to the exchange. These results also suggest that a large ferromagnetic interaction and a large anisotropy are unlikely to co‐exist in such structural types.
Design, Synthesis, and Miniemulsion Polymerization of New Phosphonate Surfmers and Application Studies of the Resulting Nanoparticles as Model Systems for Biomimetic Mineralization and Cellular Uptake
Authors: Sauer Rüdiger , Froimowicz Pablo , Schöller Katrin , Cramer Jens‐M. , Ritz Sandra , Mailänder Volker , Landfester Katharina
Published: March 2012

Heterophase polymerizations have gained increasing attention in the past decades, especially as the decoration and functionalization of the particle surface for further applications gets more and more into focus. One promising approach for the functionalization exclusively on the particle surface is the use of surfmers (surfactant and monomer). Herein, we present the synthesis of a new family of surfmers and their use for decorating nanoparticles with phosphonate groups through miniemulsion polymerization. Furthermore the synthesis of a dye‐labeled functional surfmer provided an elegant manner to evaluate and get deeper insights about its copolymerization. Additionally, potential applications of the synthesized particles in biological studies as well as their use as template for biomimetic mineralization are presented.
Biocompatible Triplex Ag@SiO2@mTiO2 Core–Shell Nanoparticles for Simultaneous Fluorescence‐SERS Bimodal Imaging and Drug Delivery
Authors: Wang Yunqing , Chen Lingxin , Liu Ping
Published: March 2012

Herein, we report the synthesis of biocompatible triplex Ag@SiO2@mTiO2 core–shell nanoparticles (NPs) for simultaneous fluorescence‐surface‐enhanced Raman scattering (F‐SERS) bimodal imaging and drug delivery. Stable Raman signals were created by typical SERS tags that were composed of Ag NPs for optical enhancement, a reporter molecule of 4‐mercaptopyridine (4‐Mpy) for a spectroscopic signature, and a silica shell for protection. A further coating of mesoporous titania (mTiO2) on the SERS tags offered high loading capacity for a fluorescence dye (flavin mononucleotide) and an anti‐cancer drug (doxorubicin (DOX)), thereby endowing the material with fluorescence‐imaging and therapeutic functions. The as‐prepared F‐SERS dots exhibited strong fluorescence when excited by light at 460 nm whilst a stable, characteristic 4‐Mpy SERS signal was detected when the excitation wavelength was changed to longer wavelength (632.8 nm), both in solution and after incorporation inside living cells. Their excellent biocompatibility was demonstrated by low cytotoxicity against MCF‐7 cells, even at a high concentration of 100 μg mL−1. In vitro cell cytotoxicity confirmed that DOX‐loaded F‐SERS dots had a comparable or even greater therapeutic effect compared with the free drug, owing to the increased cell‐uptake, which was attributed to the possible endocytosis mechanism of the NPs. To the best of our knowledge, this is the first proof‐of‐concept investigation on a multifunctional nanomedicine that possessed a combined capacity for fast and multiplexed F‐SERS labeling as well as drug‐loading for cancer therapy.
Polychloride Monoanions from [Cl3]− to [Cl9]−: A Raman Spectroscopic and Quantum Chemical Investigation
Authors: Brückner Robin , Haller Heike , Ellwanger Mathias , Riedel Sebastian
Published: March 2012

Polychloride monoanions stabilized by quaternary ammonium salts are investigated using Raman spectroscopy and state‐of‐the‐art quantum‐chemical calculations. A regular V‐shaped pentachloride is characterized for the [N(Me)4][Cl5] salt, whereas a hockey‐stick‐like structure is tentatively assigned for [N(Et)4][Cl2⋅⋅⋅Cl3−]. Increasing the size of the cation to the quaternary ammonium salts [NPr4]+ and [NBu4]+ leads to the formation of the [Cl3]− anion. The latter is found to be a pale yellow liquid at about 40 °C, whereas all the other compounds exist as powders. Further to these observations, the novel [Cl9]− anion is characterized by low‐temperature Raman spectroscopy in conjunction with quantum‐chemical calculations.
Carbon‐Decorated Single‐Crystalline Ni2P Nanotubes Derived from Ni Nanowire Templates: A High‐Performance Material for Li‐Ion Batteries
Authors: Lu Yi , Tu Jiangping , Xiong Qinqin , Qiao Yanqiang , Zhang Jun , Gu Changdong , Wang Xiuli , Mao Scott X.
Published: March 2012

Single‐crystalline Ni2P nanotubes (NTs) were facilely synthesized by using a Ni nanowire template. The mechanism for the formation of the tubular structures was related to the nanoscale Kirkendall effect. These NTs exhibited a core/shell structure with an amorphous carbon layer that was grown in situ by employing oleylamine as a capping agent. Galvanostatic charge/discharge measurements indicated that these Ni2P/C NTs exhibited superior high‐rate capability and good cycling stability. There was still about 310 mAh g−1 retained after 100 cycles at a rate of 5 C. Importantly, the tubular nanostructures and the single‐crystalline nature of the Ni2P NTs were also preserved after prolonged cycling at a relatively high rate. These improvements were attributed to the stable nanotubular structure of Ni2P and the carbon shell, which enhanced the conductivity of Ni2P, suppressed the aggregation of active particles, and increased the electrode stability during cycling.
Sonochemical Synthesis of Ag/AgCl Nanocubes and Their Efficient Visible‐Light‐Driven Photocatalytic Performance
Authors: Chen Deliang , Yoo Seung Hwa , Huang Qingsong , Ali Ghafar , Cho Sung Oh
Published: March 2012

A novel one‐step sonochemical approach to synthesize a plasmonic photocatalyst of AgCl nanocubes (ca. 115 nm in edge length) with a small amount of Ag metal species is presented. The nanoscale Ag/AgCl hybrid photocatalysts with cubic morphology are readily formed under ambient ultrasonic conditions and neither external heat treatment nor reducing agents are required. The size of the Ag/AgCl photocatalysts could be controlled by changing the concentrations of Ag+ ions and polyvinylpyrrolidone molecules in precursor solutions. The compositions, microstructures, influencing factors, and possible growth mechanism of the Ag/AgCl hybrid nanocubes were systematically investigated. The Ag/AgCl photocatalysts show excellent photocatalytic performance for degradation of various dye molecules under visible light.
Amide‐Based Nonheme Cobalt(III) Olefin Epoxidation Catalyst: Partition of Multiple Active Oxidants CoVO, CoIVO, and CoIIIOO(O)CR
Authors: Song Young Joo , Hyun Min Young , Lee Jun Ho , Lee Hong Gyu , Kim Jin Hoon , Jang Seung Pyo , Noh Jin Young , Kim Youngmee , Kim Sung‐Jin , Lee Suk Joong , Kim Cheal
Published: March 2012

A mononuclear nonheme cobalt(III) complex of a tetradentate ligand containing two deprotonated amide moieties, [Co(bpc)Cl2][Et4N] (1; H2bpc=4,5‐dichloro‐1,2‐bis(2‐pyridine‐2‐carboxamido)benzene), was prepared and then characterized by elemental analysis, IR, UV/Vis, and EPR spectroscopy, and X‐ray crystallography. This nonheme CoIII complex catalyzes olefin epoxidation upon treatment with meta‐chloroperbenzoic acid. It is proposed that complex 1 shows partitioning between the heterolytic and homolytic cleavage of an OO bond to afford CoVO (3) and CoIVO (4) intermediates, proposed to be responsible for the stereospecific olefin epoxidation and radical‐type oxidations, respectively. Moreover, under extreme conditions, in which the concentration of an active substrate is very high, the CoOOC(O)R (2) species is a possible reactive species for epoxidation. Furthermore, partitioning between heterolysis and homolysis of the OO bond of the intermediate 2 might be very sensitive to the nature of the solvent, and the OO bond of the CoOOC(O)R species might proceed predominantly by heterolytic cleavage, even in the presence of small amounts of protic solvent, to produce a discrete CoVO intermediate as the dominant reactive species. Evidence for these multiple active oxidants was derived from product analysis, the use of peroxyphenylacetic acid as the peracid, and EPR measurements. The results suggest that a less accessible CoVO moiety can form in a system in which the supporting chelate ligand comprises a mixture of neutral and anionic nitrogen donors.
ChemInform Abstract: Structural Transformation and Oxidation of Sr2MnO3.5+x Determined by in situ Neutron Powder Diffraction.
Authors: Munnings Christopher N. , Sayers Ruth , Stuart Paul A. , Skinner Stephen J.
Published: March 2012

The title compound with 0 ≤ x ≤ 0.5 crystallizes in the monoclinic space group P21/c at room temperature.
ChemInform Abstract: Synthesis and Tunable Thermal Expansion Property of Al2‐δScδW3O12.
Authors: Zhu Junjun , Yang Juan , Cheng Xiaonong
Published: March 2012

Title solid solutions are synthesized over the whole composition range (δ = 0—2) by solid state reaction of Al2O3, Sc2O3, and WO3 (800 °C for 8 h followed by sintering between 1000 and 1100 °C for 10 h).
ChemInform Abstract: Intrinsic Optical Properties and Divergent Doping Effects of Manganese(II) on Luminescence for Tin(II) Phosphite Grown from a Deep‐Eutectic Solvent.
Authors: Huang Hui‐Lin , Lai Yei‐Chen , Chiang Yun‐Wei , Wang Sue‐Lein
Published: March 2012

SnHPO3 (I) is ionothermally synthesized from a mixture of SnC2O4 and H3PO3 in a mixture of pyrazole and choline chloride as a new deep‐eutectic solvent (autoclave, 180 °C, 72 h, 70% yield).
ChemInform Abstract: BaZnRu5O11: Novel Compound with Frustrated Magnetic Lattice Based on a Distorted Kagome Network
Authors: Shlyk L. , Strobel S. , Rose E. , Niewa R.
Published: March 2012

Single crystals of the new title compound in the form of black, hexagonal plates are grown in a BaCl2 flux.
ChemInform Abstract: Double‐Shelled CoMn2O4 Hollow Microcubes as High‐Capacity Anodes for Lithium‐Ion Batteries.
Authors: Zhou Liang , Zhao Dongyuan , Lou Xiong Wen
Published: March 2012

New double‐shelled CoMn2O4 hollow microcubes with nanometer‐sized building blocks are prepared by annealing Co0.33Mn0.67CO3 (600 °C, 5 h in air) obtained by coprecipitation from aqueous solutions of Co(NO3)2, MnSO4, EtOH, (NH4)2SO4, and NH4HCO3 (50 °C, 9 h).
ChemInform Abstract: Elusive O=PN, a Rare Example of Phosphorus σ2λ5‐Coordination.
Authors: Zeng Xiaoqing , Beckers Helmut , Willner Helge
Published: March 2012

ArF laser (193 nm) photolysis of OP(N3)3 in an Ar matrix at 16 K leads to the formation of two linear isomers OPN and ONP which are characterized by mid‐ and far‐IR spectroscopy, and DFT and ab initio CCSD(T)/cc‐pVTZ calculations.
ChemInform Abstract: Synthesis of Alkaline Earth Diazenides MAEN2 (MAE: Ca, Sr, Ba) by Controlled Thermal Decomposition of Azides under High Pressure.
Authors: Schneider Sebastian B. , Frankovsky Rainer , Schnick Wolfgang
Published: March 2012

The title compounds are synthesized by controlled decomposition of the corresponding azides in a multianvil press at 12 GPa and 800 °C (20 min) for CaN2, 9 GPa and 550 °C (15 min) for SrN2, and 3 GPa and 450 °C (15 min) for BaN2.
ChemInform Abstract: Synthesis and Structure Resolution of RbLaF4.
Authors: Rollet Anne‐Laure , et al. et al.
Published: March 2012

RbLaF4 is synthesized by solid state reaction of a 1:1 mixture of LaF3 and RbF (Ar, 425 °C, 2 d).
ChemInform Abstract: Expansion of Antimonato Polyoxovanadates with Transition Metal Complexes: (Co(N3C5H15)2)2 [{Co(N3C5H15)2}V15 Sb6O42(H2O)]·5H2O and (Ni(N3C5H15)2)2 [{Ni(N3C5H15) 2}V15Sb6O42(H2O)] ·8H2O.
Authors: Antonova Elena , Naether Christian , Koegerler Paul , Bensch Wolfgang
Published: March 2012

The new title compounds are solvothermally synthesized from mixtures of Sb2O3, NH4VO3, CoCl2 or NiCl2, N‐2‐aminoethyl‐1,3‐propanediamine, and water (autoclave, 130—150 °C, 7 d, 45 and 60% yield for the Co and Ni compound, respectively).
ChemInform Abstract: Double Sandwich Polyoxometalate and Its Fe(III) Substituted Derivative, [As2Fe5Mo21O82]17‐ and [As2Fe6Mo20O80 (H2O)2]16‐.
Authors: Dong Xiangqian , Zhang Yanping , Liu Bin , Zhen Yanzhong , Hu Huaiming , Xue Ganglin
Published: March 2012

Compounds (IV) and (V) are characterized by single crystal XRD, IR, UV, and fluorescence spectroscopy, electrospray ionization mass spectrometry, and magnetic measurements.
ChemInform Abstract: Intriguing Interconnections Among Phase Transition, Magnetic Moment, and Valence Disproportionation in 2H‐Perovskite Related Oxides.
Authors: Zhao Qingbiao , Darriet Jacques , Whangbo Myung‐Hwan , Ye Longfei , Stackhouse Chavis , zur Loye Hans‐Conrad
Published: March 2012

The reaction of Co3O4 in a Sr(OH)2/KOH reactive flux yields high quality commensurate single crystals of Sr5Co4O12 (Ag crucible, 750 °C, 5 h, 80% yield) and Sr6Co5O15 (Ag crucible, 500 °C, 5 h, 80% yield).
ChemInform Abstract: The New High‐Pressure Borate Hydrate Cu3B6O12·H2O.
Authors: Neumair Stephanie C. , Kaindl Reinhard , Hoffmann Rolf‐Dieter , Huppertz Hubert
Published: March 2012

The title compound is synthesized by high‐pressure reaction of CuO and H3BO3 (Walker‐type multianvil apparatus, 7.5 GPa, 700 °C, 10 min).
ChemInform Abstract: A Highly Efficient Kinetic Resolution of Morita—Baylis—Hillman Adducts Achieved by N—Ar Axially Chiral Pd‐Complexes Catalyzed Asymmetric Allylation.
Authors: Wang Feijun , Li Shengke , Qu Mingliang , Zhao Mei‐Xin , Liu Lian‐Jun , Shi Min
Published: March 2012

A novel axially chiral palladium complex is prepared and successfully applied as a catalyst in the asymmetric allylic arylation of Morita—Baylis—Hillman adducts (I), (V), and (VIII).
ChemInform Abstract: Boron‐ and Silicon‐Substituted [3]‐1‐Heterodendralenes as Versatile Building Blocks for the Rapid Construction of Polycyclic Architectures.
Authors: Tripoteau Fabien , Verdelet Tristan , Hercouet Alain , Carreaux Francois , Carboni Bertrand
Published: March 2012

Efficient and stereoselective formation of diverse polycyclic compounds is described starting from the heterodendralenes (I).
ChemInform Abstract: Flash Vacuum Pyrolysis of Naphthalen‐1‐yl and ‐2‐yl Prop‐2‐ynoate.
Authors: Lellek Vit , Hansen Hans‐Juergen
Published: March 2012

In general flash vacuum pyrolysis of phenyl prop‐2‐ynoates afford the corresponding cycloheptafuranones in acceptable yields, although the cycloheptafuranone (II) is obtained in a yield distinctly lower than in comparable cases.
ChemInform Abstract: Divergent Pd(II) and Au(III) Mediated Nitroalkynol Cycloisomerizations.
Authors: Patel Pitambar , Ramana Chepuri V.
Published: March 2012

The intramolecular simultaneous addition of nitro and alcohol units across the alkyne in nitroalkynols (I) and (IV) leading to spiro‐indolin‐3‐ones (II) and (V) and spiro‐benzoxazin‐4‐ones (III) and (VI) is revealed by employing Pd and Cu catalysis.
ChemInform Abstract: Reaction of Acetylenedicarboxylic Acids Esters with 4,5‐Dihydro‐1H‐pyrazole‐1‐carbothioamides and 3,4,5,6‐Tetrahydro‐2H‐1,2,4‐triazepine‐3‐thiones.
Authors: Danilkina N. A. , Mikhaylov L. E. , Ivin B. A.
Published: March 2012

The reaction of thioamides (I) with mono‐ and diesters of acetylenecarboxylic acids proceeds differently leading to thiazines, e.g. (III), or thiazole derivatives such as (V).
ChemInform Abstract: The Intramolecular Morita—Baylis—Hillman‐Type Alkylation Reaction.
Authors: Cran John W. , Krafft Marie E. , Seibert Kimberly A. , Haxell Thomas F. N. , Wright James A. , Hirosawa Chitaru , Abboud Khalil A.
Published: March 2012

Recently published results for the title cycloalkylation reactions in the presence of stoichiometric or substoichiometric amounts of trialkylphosphines are summarized.
ChemInform Abstract: Friedel—Crafts Alkylation Between Chalcone Epoxides and Heteroarenes Induced by Triarylaminium Salt.
Authors: Huo Congde , Xu Xiaolan , Jia Xiaodong , Wang Xicun , An Jinzhu , Sun Chougu
Published: March 2012

A metal‐ and halogen‐free Friedel—Crafts alkylation induced by catalytic amounts of triarylaminium salt is reported.
ChemInform Abstract: Metal‐Free Relay Oxidation: Valuable Synthesis of Acylsilane and Ketones under Aerobic Oxidation.
Authors: Bai Xing‐Feng , Gao Guang , Zheng Zhan‐Jiang , Li Fei , Lai Guo‐Qiao , Jiang Kezhi , Li Fuwei , Xu Li‐Wen
Published: March 2012

The catalyst‐ and metal free oxidation of α‐hydroxysilanes and structurally related secondary alcohols is based on a hydroperoxidated carbonyl compound generated in situ from air and Michael adduct CHD.
ChemInform Abstract: A New Efficient Iron Catalyst for Olefin Epoxidation with Hydrogen Peroxide.
Authors: Mikhalyova Elena A. , Makhlynets Olga V. , Palluccio Taryn D. , Filatov Alexander S. , Rybak‐Akimova Elena V.
Published: March 2012

A novel bipiperidine iron complex is prepared and successfully used as a catalyst in the epoxidation of alkenes (I).
ChemInform Abstract: Unprecedented Catalytic Hydrogenation of Urea Derivatives to Amines and Methanol.
Authors: Balaraman Ekambaram , Ben‐David Yehoshoa , Milstein David
Published: March 2012

A ruthenium—bipyridine‐based PNN pincer complex efficiently catalyzes the reductive C—N bond cleavage of urea derivatives to give amines and methanol in moderate to good yields.
ChemInform Abstract: Oxidative Bromination of Ketones Using Ammonium Bromide and Oxone®.
Authors: Macharla Arun Kumar , Nappunni Rohitha Chozhiyath , Marri Mahender Reddy , Peraka Swamy , Nama Narender
Published: March 2012

Unsymmetrical dialkylketones react with moderate regioselectivity.
ChemInform Abstract: Ruthenium‐Catalyzed Reaction of Alkenyl Triflates with Zinc Thiolates.
Authors: Imazaki Yusuke , Shirakawa Eiji , Hayashi Tamio
Published: March 2012

Different alkenyl sulfides are obtained by reaction of alkenyl triflates and iodides with in situ generated zinc dithiolates in the presence of a ruthenium/phenanthroline catalyst.
ChemInform Abstract: Reticulated Pd(II)/Cu(I) Cyclodextrin Complexes as Recyclable Green Catalyst for Sonogashira Alkynylation.
Authors: Cintas Pedro , Cravotto Giancarlo , Gaudino Emanuela Calcio , Orio Laura , Boffa Luisa
Published: March 2012

A new green solid catalyst system consisting of Pd2+ and Cu+ nanoparticles supported on β‐cyclodextrin is developed and screened in Sonogashira coupling reactions of phenylacetylene and p‐iodoanisole in water or glycerol giving the desired products with excellent GC yields.
ChemInform Abstract: Rh‐Catalyzed Asymmetric Hydroformylation of Functionalized 1,1‐Disubstituted Olefins.
Authors: Wang Xiao , Buchwald Stephen L.
Published: March 2012

In the presence of a P‐chiral phosphine ligand the title reaction affords linear aldehydes with β‐chirality in a highly enantioselective fashion with good chemo‐ and regioselectivity.
ChemInform Abstract: Benzylation of Hydroxy Groups with Tertiary Amine as a Base.
Authors: Gathirwa Jeremiah W. , Maki Toshihide
Published: March 2012

The benzylation of hydroxy groups under weak basic conditions is reported.
ChemInform Abstract: Cross‐Coupling of Nonactivated Alkyl Halides with Alkynyl Grignard Reagents: A Nickel Pincer Complex as the Catalyst.
Authors: Vechorkin Oleg , Godinat Aurelien , Scopelliti Rosario , Hu Xile
Published: March 2012

A wide variety of alkynyl Grignard reagents is successfully coupled with diverse alkyl bromides and iodides in the presence of bis(dimethylaminoethyl) ether and a Ni pincer complex at room temperature.
ChemInform Abstract: Efficient Trifluoromethylation of Activated and Non‐activated Alkenyl Halides by Using (Trifluoromethyl)trimethylsilane.
Authors: Hafner Andreas , Braese Stefan
Published: March 2012

The present protocol for reaction of vinyl halides with in situ generated trifluoromethyl copper provides trifluoromethylated alkenes in up to a gram scale.
ChemInform Abstract: Regioselective Ring‐Opening Reaction of 2‐Mono‐Substituted Azetidin‐3‐ones Promoted by the Combined Use of Titanium Tetraiodide and Its Chloro or Bromo Counterpart.
Authors: Hata Shingo , Fukuda Daisuke , Hachiya Iwao , Shimizu Makoto
Published: March 2012

The ring‐opening reaction of azetidinones (I) in the presence of a combination of titanium iodide and titanium chloride occurs at the more substituted bond to afford the ketones (II) and (III) in moderate to high yields with high regioselectivity.
ChemInform Abstract: One‐Pot Synthesis of Isocyanides from Alcohols.
Authors: Okada Iku , Kitano Yoshikazu
Published: March 2012

The products are formed via reaction of tertiary and bezylic alcohols with trimethylsilyl cyanide and subsequent dehydration with tosyl chloride.
ChemInform Abstract: Base‐Promoted Synthesis of Activated Cyclopropanes Bearing Homologated Carbonyl Groups via Tandem Michael Addition—Intramolecular Enolate Trapping.
Authors: Russo Alessio , Lattanzi Alessandra
Published: March 2012

Base‐promoted reaction of indandione (I) with γ‐hydroxyenone‐derived diphenyl phosphinates (II) provides access towards spirocyclic cyclopropane derivatives.
ChemInform Abstract: Unusual Base‐Induced Rearrangement of exo‐9‐Oxabicyclo[4.2.1]non‐7‐ene Oxide to exo‐8‐Hydroxybicyclo[3.3.0]octan‐2‐one.
Authors: Hodgson David M. , Stent Matthew A. H. , Paton Robert S. , Wilson Francis X.
Published: March 2012

The exo‐selectivity in the formation of title product (IV) can be explained by the classic transannular chemistry studies by Cope.
ChemInform Abstract: The Application of a Recyclable Organocatalytic System to the Asymmetric Domino Michael/Henry Reaction in Aqueous Media.
Authors: Chintala Poornima , Ghosh Subrata K. , Long Elizabeth , Headley Allan D. , Ni Bukuo
Published: March 2012

The recyclable catalytic system can be used in up to four consecutive cycles with nearly constant activity and selectivity.
ChemInform Abstract: Reusable and Sustainable Nanostructured Skeleton Catalyst: Heck Reaction with Nanoporous Metallic Glass Pd (PdNPore) as a Support, Stabilizer and Ligand‐Free Catalyst.
Authors: Kaneko Tetsuro , Tanaka Shinya , Asao Naoki , Yamamoto Yoshinori , Chen Mingwei , Zhang Wei , Inoue Akihisa
Published: March 2012

PdNPore can be used in at least five runs without loss activity.
ChemInform Abstract: Reactions of Nitroalkenes with Nitroalkanes or Sulfur Ylides Catalyzed by Amine—Thiourea Bifunctional Polymeric Organocatalysts.
Authors: Lu Jinni , Toy Patrick H.
Published: March 2012

A bifunctional non‐crosslinked polystyrene bearing amine and thiourea groups is developed and used as homogeneous catalyst in reactions of nitroalkenes with nitropropane or sulfur ylides.
ChemInform Abstract: Cationic Late‐Transition‐Metal Complexes Catalyze the Ring Opening of Aziridines with Amines.
Authors: Marti Alex , Peruncheralathan Saravanan , Schneider Christoph
Published: March 2012

Novel catalyst systems consisting of Pg/Ag‐ or Ni/Ag‐complexes are discovered to promote the aminolysis of meso‐aziridines to give 1,2‐diamines in excellent yields.
ChemInform Abstract: Enantio‐ and Diastereoselective Nitro‐Mannich Reactions with in situ Generated N‐Boc‐imines Catalyzed by a Bifunctional Thiourea—Guanidine Catalyst.
Authors: Huang Wei , Peng Cheng , Guo Li , Hu Rong , Han Bo
Published: March 2012

The title reaction affords pure diastereomers (III) as precursors of optically active diamines.
ChemInform Abstract: Green Catalysts Derived from Agricultural and Industrial Waste Products: The Preparation of Phenols from CsOH and Aryl Iodides Using CuO on Mesoporous Silica.
Authors: Chan Chien‐Ching , Chen Yan‐Wun , Su Chi‐Shen , Lin Hong‐Ping , Lee Chin‐Fa
Published: March 2012

The new copper catalyst is prepared from semiconductor copper from chemical mechanical planarization wastewater and silica derived from rice husks by hydroxide‐precipitation and hydrothermal treatment at 100°C followed by calcination at 600°C in air.
ChemInform Abstract: Novel Chiral Bisformamide‐Promoted Asymmetric Allylation of Benzaldehyde with Allyltrichlorosilane.
Authors: Ishimaru Kaori , Ono Kaori , Tanimura Yuya , Kojima Takakazu
Published: March 2012

The first application of novel chiral bis(formamides) (I) to the asymmetric allylation of benzaldehyde is described.
ChemInform Abstract: Asymmetric Synthesis of Chiral 1,3‐Diaminopropanols: Bisoxazolidine‐Catalyzed C—C Bond Formation with α‐Keto Amides.
Authors: Xu Hanhui , Wolf Christian
Published: March 2012

The enantioselective addition of nitromethane (II) to α‐keto amides (I) affords alcohols (III) whose conversion to chiral 1,3‐diaminopropanols (V) is demonstrated.
ChemInform Abstract: Highly Efficient Copper Catalytic System for the O‐Arylation of Phenol with Iodoarene.
Authors: Cheng An‐Yi , Hsieh Jen‐Chieh
Published: March 2012

Cu2O/imidazole‐4‐carboxylic acid are successful for the synthesis of a broad spectrum of diaryl ether derivatives.
ChemInform Abstract: A Modified and Highly Useful Protocol for the Broensted Acid Catalyzed, Enantioselective, Vinylogous Mannich Reaction with Aliphatic Aldimines.
Authors: Abels Falko , Schneider Christoph
Published: March 2012

The optimized protocol is developed for the enantio‐ and diastereoselective synthesis of esters (IV) and (VIII).
ChemInform Abstract: Lewis Acid Catalyzed Diastereoselective Vinylogous Mannich Reaction Induced by O‐Pivaloylated D‐Galactosylamine as the Chiral Auxiliary: Stereoselective Synthesis of 6‐Arylpiperidin‐2‐ones.
Authors: Cui Bing , Kong Shasha , Wu Guiping , Miao Zhiwei , Chen Ruyu
Published: March 2012

Under optimized conditions with FeCl3 as the catalyst, the reaction of galactosyl derived aldimines with silyl dienolate proceeds with good to excellent diastereoselectivity.
ChemInform Abstract: Simple, Clean and Highly Efficient Synthesis of Polyphenolic Amides Catalyzed by Ferric Exchanged Montmorillonite.
Authors: Mahanta Dhrubajyoti , Handique Jyotirekha G.
Published: March 2012

A recyclable and inexpensive strong acidic solid catalyst is used for the synthesis of the title compounds (III), (V), and (VII).
ChemInform Abstract: Bis‐ortho‐metalation/silylation of Unprotected o‐Phthalic Acids. Straightforward Access to New Silylated N‐Hydroxyphthalimide (NHPI) Analogues.
Authors: Michaux Jerome , Bessieres Bernard , Einhorn Jacques
Published: March 2012

The bissilylated products (III) are transformed into N‐hydroxyphthalimides.
ChemInform Abstract: Palladium Complex of 6‐(2‐Hydroxy‐5‐methylphenyl)‐3‐(pyridin‐2‐yl)‐1,2,4‐triazin‐5(2H)‐one: Synthesis, Structure, and Catalytic Activity.
Authors: Mekhaev A. V. , Pestov A. V. , Slepukhin P. A. , Yatluk Yu. G. , Pervova M. G. , Samorukova M. A. , Chupakhin O. N.
Published: March 2012

The title complex is prepared for the first time and used as a catalyst in the Mizoroki—Heck reaction.
ChemInform Abstract: An Efficient Copper‐Catalyzed One‐Pot Synthesis of Diaryl Thioethers by Coupling of Arylboronic Acids with Potassium Ethyl Xanthogenate under Mild Conditions.
Authors: Wang Liang , Zhou Wei‐You , Chen Sheng‐Chun , He Ming‐Yang , Chen Qun
Published: March 2012

KS‐CS‐O‐Et is used as thiol surrogate for in situ formation of arylthiols.
ChemInform Abstract: Synthesis of Sulfonyl Chlorides and Thiosulfonates from H2O2—TiCl4.
Authors: Bahrami Kiumars , Khodaei Mohammad , Khaledian Donya
Published: March 2012

A simple oxidative chlorination procedure for thiols is developed.
ChemInform Abstract: Biogenous Iron Oxide Immobilized Palladium Catalyst for the Solvent‐Free Suzuki—Miyaura Coupling Reaction.
Authors: Mandai Kyoko , Korenaga Toshinobu , Ema Tadashi , Sakai Takashi , Furutani Mitsuaki , Hashimoto Hideki , Takada Jun
Published: March 2012

The catalyst can be easily recovered and reused at least 5 times with only slight decay of activity.
ChemInform Abstract: sp3‐sp2 C—C Bond Formation via Broensted Acid Trifluoromethanesulfonic Acid Catalyzed Direct Coupling Reaction of Alcohols and Alkenes.
Authors: Yue Hui‐Lan , Wei Wei , Li Ming‐Ming , Yang Yong‐Rong , Ji Jian‐Xin
Published: March 2012

The reaction allows a new and efficient access to a number of di‐, tri‐, and tetrasubstituted olefins and proceeds with high regio‐ and stereoselectivity.
ChemInform Abstract: Copper(I)‐Catalyzed Synthesis of 1,3‐Enynes via Coupling Between Vinyl Halides and Alkynes or Domino Coupling of Vinyl Halides.
Authors: Zhu Yan , Li Tingyi , Qu Xiaoming , Sun Peng , Yang Hailong , Mao Jincheng
Published: March 2012

The double bond geometry of the vinyl halide (I) and (V) is retained during the reaction.
ChemInform Abstract: New Palladium‐Catalyzed Cascades: 4‐exo‐Dig Cyclocarbopalladation Reaction Followed by Suzuki—Miyaura or Sonogashira Cross‐Coupling.
Authors: Charpenay Melanie , Boudhar Aicha , Siby Acetou , Schigand Sophie , Blond Gaelle , Suffert Jean
Published: March 2012

The method produces tricyclic structures bearing dienyne and trienyne side chains.
ChemInform Abstract: [MeC(OH)2]+ClO4‐: A New Efficient Organocatalyst for the Preparation of 1‐Amido‐ and 1‐Carbamato‐alkyl Naphthols.
Authors: Tamaddon Fatemeh , Bistgani Javad Moazeni
Published: March 2012

The title compounds (IV) and (VII) are synthesized by a three‐component condensation in the presence of a super ionic liquid catalyst, generated by mixing equimolar amounts of glacial acetic acid and nonaqueous perchloric acid.
ChemInform Abstract: Nanoporous Gold Catalyzed [4 + 2] Benzannulation Between ortho‐Alkynylbenzaldehydes and Alkynes.
Authors: Asao Naoki , Menggenbateer Menggenbateer , Seya Yohei , Yamamoto Yoshinori , Chen Mingwei , Zhang Wei , Inoue Akihisa
Published: March 2012

A nanoporous gold material (pore size 25 nm) is prepared by selectively leaching of silver from an alloy foil (thickness 40 μm) consisting of 30 mol% Au and 70 mol% Ag in 70% aqueous HNO3.
ChemInform Abstract: A Flexible Approach to Hexahydronaphthalene‐1‐carboxylates.
Authors: Li Zhi , Alameda‐Angulo Celia , Quiclet‐Sire Beatrice , Zard Samir Z.
Published: March 2012

The title method is based on the Favorskii rearrangement of an α,α‐dichloroketone.
ChemInform Abstract: Synthesis of Benzyl‐Substituted Naphthalenes from Benzylidene Tetralones.
Authors: Deck Lorraine M. , Mgani Quintino , Martinez Andrea , Martinic Alice , Whalen Lisa J. , Vander Jagt David L. , Royer Robert E.
Published: March 2012

Starting with the cross‐aldol condensation of tetralones (I) and aromatic aldehydes, a short strategy is developed to synthesize a variety of title compounds (VI).
ChemInform Abstract: Synthesis of Functionalized 1H‐Indenes via Copper‐Catalyzed Arylative Cyclization of Arylalkynes with Aromatic Sulfonyl Chlorides.
Authors: Zeng Xiaoming , Ilies Laurean , Nakamura Eiichi
Published: March 2012

In addition to a variety of functionalized indenes (18 examples), a bis(indene) and an indacene are prepared.
ChemInform Abstract: Copper‐Catalyzed Dimerization Fragmentation Cyclization Reactions of (E)‐1‐en‐4‐yn‐3‐ols as a Versatile Approach for the Synthesis of Multisubstituted 1H‐Cyclopenta[b]naphthalenes.
Authors: Wang Xiang‐Chuan , Hu Jie , Sun Peng‐Shuai , Zhong Mei‐Jin , Ali Shaukat , Liang Yong‐Min
Published: March 2012

An intermolecular condensation reaction of 1,3,5‐triarylenynols (I), (III), and (V) affords highly conjugated systems.
ChemInform Abstract: Enantioselective Synthesis of the Spirotryprostatin A Scaffold.
Authors: Antonchick Andrey P. , Schuster Hannah , Bruss Hanna , Schuermann Markus , Preut Hans , Rauh Daniel , Waldmann Herbert
Published: March 2012

Catalytic enantioselective cycloaddition of azomethine ylides (II) to methylene oxindoles (I) gives pyrrolidinyl‐spirooxindoles after acylation with high diastereoselectivity in most cases with exception of ortho‐substituted azomethine ylides.
ChemInform Abstract: Highly Enantioselective Epoxidation of α,β‐Unsaturated Ketones Catalyzed by Primary‐Secondary Diamines.
Authors: Lu Yingpeng , Zheng Changwu , Yang Yingquan , Zhao Gang , Zou Gang
Published: March 2012

The diamine CDAC combined with TFA efficiently promotes the process.
ChemInform Abstract: Facile Synthesis of γ‐Alkylidenebutenolides from Morita—Baylis—Hillman Adducts.
Authors: Park Bo Ram , Kim Ko Hoon , Lim Jin Woo , Kim Jae Nyoung
Published: March 2012

A convenient three‐step synthesis of the target compounds including bovolide (Vd) is developed.
ChemInform Abstract: Highly Regioselective Lewis Acid‐Catalyzed [3 + 2] Cycloaddition of Alkynes with Donor—Acceptor Oxiranes by Selective Carbon—Carbon Bond Cleavage of Epoxides.
Authors: Liu Renrong , Zhang Mei , Zhang Junliang
Published: March 2012

The scandium‐catalyzed cycloaddition of alkynes (II) with epoxides (I) proceeds regioselectively to afford 2,5‐dihydrofuran derivatives (III) as single products.
ChemInform Abstract: A Versatile Combined N‐Heterocyclic Carbene and Base‐Catalyzed Multiple Cascade Approach for the Synthesis of Functionalized Benzofuran‐3‐(2H)‐ones.
Authors: Franz Johannes F. , Fuchs Patrick J. W. , Zeitler Kirsten
Published: March 2012

The one‐pot process involves a NHC‐catalyzed hydroacylation/Stetter cascade followed by a three‐step Broensted rearrangement.
ChemInform Abstract: 2‐Thiophenecarbohydrazides: A Novel Efficient Method for the Synthesis of 2‐Thiophenecarbohydrazide.
Authors: Elshaarawy Reda F. M. , Janiak Christoph
Published: March 2012

All products are purified by recrystallization.
ChemInform Abstract: Development of Naphtho[1,2‐b:5,6‐b′]dithiophene Based Novel Small Molecules for Efficient Bulk‐Heterojunction Organic Solar Cells.
Authors: Dutta Pranabesh , Yang Wooseung , Eom Seung Hun , Lee Woo‐Hyung , Kang In Nam , Lee Soo‐Hyoung
Published: March 2012

Organic solar cells based on compound (IIIb) exhibit promising photovoltaic device performance with a maximum power conversion efficiency up to 2.20% under the illumination of AM 1.5G, 100 mW cm‐2.
ChemInform Abstract: Inhibition of the Procoagulant Activity of Blood Platelets by Vinylsulfonyl Derivatives of Pyrrolidine‐2‐carboxylic Acid.
Authors: Kudryavtsev K. V. , Podoplelova N. A. , Novikova A. A. , Panteleev M. A. , Zabolotnev D. V. , Zefirov N. S.
Published: March 2012

Cycloaddition of divinyl sulfone (II) to the azomethine ylides, generated from imino esters (I) under action of Lewis acids, proceeds stereoselectively to form racemic pyrrolidines (III).
ChemInform Abstract: Fast, Mild, Eco‐Friendly Synthesis of Polyfunctionalized Pyrroles from β‐Nitroacrylates and β‐Enaminones.
Authors: Palmieri Alessandro , Gabrielli Serena , Cimarelli Cristina , Ballini Roberto
Published: March 2012

The reaction is conducted under solvent‐free conditions.
ChemInform Abstract: Direct Synthesis of Pyrroles via a Silver‐Promoted Three‐Component Reaction Involving Unusual Imidazole Ring Opening.
Authors: Zeng Jing , Bai Yaguang , Cai Shuting , Ma Jimei , Liu Xue‐Wei
Published: March 2012

A novel method for the preparation of substituted pyrroles (IV) is elaborated using a silver‐catalyzed three‐component reaction of imidazole aldehyde (I), secondary amines (II) and alkynes (III).
ChemInform Abstract: Binap—Gold(I) versus Binap—Silver Trifluoroacetate Complexes as Catalysts in 1,3‐Dipolar Cycloadditions of Azomethine Ylides.
Authors: Martin‐Rodriguez Maria , Najera Carmen , Sansano Jose M. , de Cozar Abel , Cossio Fernando P.
Published: March 2012

The BINAP‐gold(I) catalyst shows similar or improved activity in a series of enantioselective Diels—Alder reactions, when compared to the BINAP‐silver catalyst.
ChemInform Abstract: Novel and Simple Methodology for the Synthesis of 3‐Acetylindoles and Their N‐Alkyl Derivatives Using TBAB as Phase Transfer Catalyst.
Authors: Venkatanarayana M. , Dubey Pramod K.
Published: March 2012

The title indoles (II) can also be prepared from the corresponding carboxamides with slightly lower yields.
ChemInform Abstract: A Selective, Tin‐Free Radical Mediated Synthesis of Indoles Based on a Sulfonate Template.
Authors: Gray Vincent James , Wilden Jonathan D.
Published: March 2012

The synthesis of N‐methylindoles (VII) is achieved by radical‐mediated cyclization and oxidation of substrates (III).
ChemInform Abstract: Unexpected Aspect on the Fischer Indolization of Propiophenone (5‐Chloro‐2‐methoxyphenyl)hydrazone.
Authors: Kokurkina Galina V. , Dutov Mikhail D. , Shevelev Svyatoslav A. , Kachala Vadim V. , Chizhov Alexander O. , Nelyubina Yulia V.
Published: March 2012

The title reaction leads to the unexpected product (IV) formed via migration of the methoxy group.
ChemInform Abstract: A One‐Pot Synthesis of 7‐Phenylindolo[3,2‐a]carbazoles from Indoles and β‐Nitrostyrenes, via an Unprecedented Reaction Sequence.
Authors: Dupeyre Gregory , Lemoine Pascale , Ainseba Nabila , Michel Sylvie , Cachet Xavier
Published: March 2012

A multi‐step one‐pot reaction for the synthesis of title compounds (III) is designed.
ChemInform Abstract: On the Stereoselective Bicyclization of Aminodienes Catalyzed by Chelating Diamide Complexes of the Group 3 Metals. A Direct Comparison of Sc(III) and Y(III) Bis(amide)s with an Application to the Synthesis of Alkaloid 195F.
Authors: Jiang Tao , Livinghouse Tom , Lovick Helena M.
Published: March 2012

Highly diastereoselective bicyclization of aminodienes such as (I) and (IV) furnishing pyrrolizidines (II) or indolizidine (V), resp., is achieved using chelating diamide complexes of Sc(III) and Y(III) as catalysts.
ChemInform Abstract: Highly Efficient Condensation of Glycerol to Cyclic Acetals Catalyzed by Titanium‐Exchanged Montmorillonite.
Authors: Mitsudome Takato , Matsuno Tsuyoshi , Sueoka Shoichiro , Mizugaki Tomoo , Jitsukawa Koichiro , Kaneda Kiyotomi
Published: March 2012

Titanium‐exchanged montmorillonite shows high activity for the condensation reaction of glycerol with ketones or aldehydes to provide cyclic acetals.
ChemInform Abstract: Synthetic Studies Toward 3‐(Acylamino)‐1H‐indazoles and Development of a One‐Pot, Microwave‐Assisted, Oxadiazole Condensation/Boulton—Katritzky Rearrangement.
Authors: Ott Gregory R. , Anzalone Andrew V.
Published: March 2012

An improved protocol is developed for the rearrangement of oxadiazoles (I) to give title compounds (II).
ChemInform Abstract: Skeletal Fusion of Small Heterocycles with Amphoteric Molecules.
Authors: Cheung Lawrence L. W. , He Zhi , Decker Shannon M. , Yudin Andrei K.
Published: March 2012

The [3 + 2] cycloaddition of (1,3) amphoteric aziridine aldehydes [released from dimers (I) and (VII)] with isocyanates provides access towards reduced aziridino‐fused hydantoins (III) and (IX), resp., with three contiguous stereocenters.