bluuebunny/crossref_metadata_2025 huggingface dataset:
Study on the Relationship between Transparency and Mineral Compositions of Shoushan Stone
Authors: Jiang Guo Jian , Tao Qing , Liu Wei Dong , Xu Jia Yue , Zhao Hong Yang , Xiong Ying Fei , Fang Yong Zheng , Zhang Cheng
Published: November 2010

The Shoushan Stone is one of the famous craft carving stones in China and transparency is one of the key indicators to evaluate the value of Shoushan Stone. The better the transparency is, the higher the value is. In this study, the mineral compositions and morphologies were investigated by XRD and SEM, respectively. Combining with the characterization of Shoushan Stone samples, the relationships between mineral composition, morphology and transparency were studied. The results show that the transparency of Shoushan Stone is determined by the mineral categories and microstructures. The sample with high transparency is fewer mineral composition numbers, similar mineral compositions and bigger crystal particles
Novel Azobenzene Homopolymers via Atom Transfer Radical Polymerization Initiated by an Azobenzene Derivative
Authors: Tang Xin De , Zhou De Jie , Han Nian Feng
Published: November 2010

An azobenzene derivative substituted with a 2-bromoisobutyryl group was used as an initiator for the atom transfer radical polymerization of 2-[4-(4-ethoxyphenylazo)phenoxy]ethyl methacrylate) (MAZO). The resulting homopolymers (AZO-PMAZO) possess azobenzene moieties both in the main chain and in the side chain. Differential scanning calorimetry (DSC) and polarized optical microscopy (POM) preliminarily revealed the liquid crystalline property of these polymers. The novel liquid crystalline polymers are expected to act as the candidates in some promising areas including optical data storage, optical switch, and molecular devices.
A New Underwater Acoustic Sensor Based on Fiber Bragg Grating Packaged with Polymer Material
Authors: Li Zhi Zhong , Zheng Yuan , Dai Wei Guo , Wang Yi Chuan
Published: November 2010

A new kind of passive underwater acoustic sensor based on fiber Bragg grating is reported. The pressure sensitivity of the sensor is enhanced three orders of magnitude being packaged with polymer material, which is a foundation for underwater acoustic detection. An intensity modulation scheme is adopted to realize high-accuracy detection due to the extra-narrow line-width laser. The experimental results show that the sensor’s noise-limited pressure detection resolution is about 61dB (0dB＝1μPa/ Hz ) at 500 Hz, which satisfies the application of underwater target detection.
Synthesis of Ethyl Cellulose-Based Thermal- and Photodual- Responsive Copolymer via ATRP and their Aggregates in Aqueous Solution
Authors: Tang Xin De , Zhou De Jie , Han Nian Feng
Published: November 2010

Ethyl cellulose-graft-poly(N-isopropylacrylamide-co-6-[4-(4-ethoxyphenylazo)phenoxy] hexyl methacrylate) (EC-g-P(NIPAM-co-MAZO)) were synthesized through atom transfer radical polymerization (ATRP). Ethyl cellulose-based macroinitiator was prepared by direct acrylation of ethyl cellulose with excess 2-bromoisobutyryl bromide at room temperature, the bromo-ester groups of which were known to be efficient initiator for ATRP. Statistical copolymerization of N-isopropylacrylamide (NIPAM) and 6-[4-(4-ethoxyphenylazo)phenoxy] hexyl methacrylate (MAZO) onto ethyl cellulose (EC) was achieved using CuCl/Me6TREN as the catalyst system and N,N-dimethylformamide/water mixture (DMF/H2O, v/v = 4:1) as solvent. Appropriate solvent concentration and polymerization temperature can minimize the intermolecular coupling and render the polymerization controllable. The aggregates formed by EC-g-P (NIPAM-co-MAZO) copolymer in aqueous solution were investigated by varying temperature and irradiation under UV/visible light. The results indicated that the copolymer had thermal- and photo- dual-responsive properties. The copolymer formed a comparatively stable suspension in water at room temperature and underwent a hydrophilic-hydrophobic transition when the temperature raised. Furthermore, their aggregates in water were influenced by isomerization of azobenzene groups under UV/visible light irradiation.
Preparation of TiO2/Ga2O3 Nanowires by a Sol-Gel-Solvothermal Method
Authors: Wang Yue Hui , Wang Dong Jun , Song Ai Jun , Zhang Zhi Gang , Song Shi Tao
Published: November 2010

TiO2/Ga2O3 nanowires were successfully prepared by a sol–gel-solvothermal method using tetrabutyl titanate as precursor, alcohol as solvent, Ga2O3 as templet and dopants, alginate as dispersant. The structures, morphologies,compositions and catalytic activity of products have been characterized by powder X-ray diffraction (XRD), transmission electron microscopy (TEM), field emission scanning electron microscopy ( FESEM ), nitrogen adsorption test, ultraviolet-visible near-infrared spectroscopy (UV–vis–NIR ),energy dispersive X-ray (EDX) analysis and spectrophotometer. The results revealed that the as-synthesized TiO2/Ga2O3 nanowires grew along [001] direction,which is reported for the first time, and the as-prepared product had better optical activity than TiO2 nanoparticles. Finally, the nanowires have a good adsorption capacity of 128.2 m2/g tested through nitrogen adsorption.
Hanle Effect in Semiconductor with Weak Spin-Orbit Coupling
Authors: Mi Yi Lin , Zhao Xiao Qing , Wang Lan
Published: November 2010

A theoretical model to study Hanle effect for materials with weak spin-orbit coupling is developed. It considers the contributions from not only the drift current but also the diffusion part, which pronouncedly enlarges the application scope of the model. The spin lifetime in spin drift diffusion equation is also corrected by considering the thermal effect and the influence of external electrical field.
Template-Free Microwave-Assisted Preparation of ZnO Spherical Microcrystals
Authors: Deng Chong Hai , Hu Han Mei , Shao Guo Quan
Published: November 2010

Large-scaled and monodispersed ZnO nanospheres have been synthesized successfully using zinc nitrate hexhydrate and triethanolamine (TEA) aqueous solutions as precursors through a facile one-pot microwave-assisted process in the absence of any template. The as-prepared products were characterized by XRD, EDX, FESEM, TEM, HRTEM and PL. The results reveal that solid ZnO nanospheres possess a hexagonal wurtzite structure with diameters of 240-440 nm, which are self-assembled by single-crystal polygonal nanoflakes with 20-30 nm in side lengths. Room temperature photoluminescence (PL) spectrum shows a strong ultraviolet (UV) emission around 387 nm and a broad green band at the center of 530 nm. The possible formation mechanism was also investigated.
Nonlinear Infrared Transmission through and Reflection off Antiferromagnetic Sandwich
Authors: Bai Jing , Fu Shu Fang , Zhou Sheng , Niu Li , Wang Xuan Zhang
Published: November 2010

The reflection and transmission of antiferromagnetic sandwich (SiO2/MnF2/ZnF2), which impacted by third-order nonlinear modification from antiferromagnetic film (MnF2), is analyzed. The obvious effect on the reflection can be observed in the vicinity of the resonant frequency. In order to illustrate the influence of medium on the refection and transmission, the case air/MnF2/air also is considered.
A Naturally Occurring, Soluble Antagonist of Human IL-23 Inhibits the Development and In Vitro Function of Human Th17 Cells
Authors: Yu Raymond Y. , Gallagher Grant
Published: November 2010

Th17 CD4 cells are critical to inflammation. Their secretion of IL-17 drives inflammation in human diseases, including inflammatory bowel disease. Differentiation of mature Th17 cells depends on stimulation with IL-6, TGF-β, and IL-21 and the induction of RORγt, but IL-23 is essential to Th17 phenotype, stability, and function. Induction of Th17 cells can be antagonized by IL-4 or IFN-γ, but mechanisms through which terminal differentiation can be inhibited have not been identified. Human IL-23Rα (HuIL23Rα)-chain mRNA transcripts exist that lack exon 9 (“Δ9”); these are translated to a truncated receptor containing the entire external domain. This soluble variant of the HuIL23Rα-chain antagonizes Th17 maturation. It is secreted and present at low levels in the blood. It represents 10% of HuIL23Rα-chain mRNA, binds IL-23 in solution, and inhibits the phosphorylation of STAT3 caused by IL-23. In in vitro Th17 cell differentiation experiments, Δ9 inhibits the production of the Th17-associated cytokines IL-17A and IL-17F. Δ9 does not bind IL-12; thus, it is a specific inhibitor of IL-23 and a modulator of Th17 cells. Our results indicate that this soluble form of HuIL23Rα likely functions to regulate Th17 activity.
Height Constitutes an Important Predictor of Mortality in End-Stage Renal Disease
Authors: Takenaka Tsuneo , Sato Takahiko , Hoshi Hitoshi , Kato Nobutaka , Sueyoshi Keita , Tsuda Masahiro , Watanabe Yusuke , Takane Hiroshi , Ohno Yoichi , Suzuki Hiromichi
Published: November 2010

Aim. Height is an important determinant of augmentation index (AI) that anticipates cardiovascular prognosis. There is a scanty of the data whether short height predicts survival in patients with end-stage renal diseases, a high risk population.Methods. Fifty two hypertensive patients with type 2 diabetic nephropathy receiving hemodialysis and 52 patients with nondiabetic nephropathy were enrolled. In addition to AI estimated with radial artery tonometry, classical cardiovascular risk factors were considered. Patients were followed for 2 years to assess cardiovascular prognosis.Results. Cox hazards regression revealed that both smoking and shortness in height independently contributed to total mortality and indicated that smoking as well as the presence of left ventricular hypertrophy predicted cardiovascular mortality. Our findings implicated that high AI, the presence of diabetes, and low high-density lipoprotein cholesterol were significant contributors to cardiovascular events.Conclusions. Our findings provide new evidence that shortness in height independently contributes to total mortality in hemodialysis patients.
A missiological glance at South African Black theology
Authors: Mwambazambi Kalemba
Published: November 2010

Black South African theologians created South African Black theology during the late 1960s and early 1970s as a conscious and theological dimension of the liberation struggle against apartheid. They drew inspiration from African-American theology, biblical hermeneutics and the raw material of their own experiences and suffering, whilst simultaneously creating a new theological paradigm and political orientation to liberate Black South Africans from apartheid and European domination. Inevitably, South African Black theology was a liberation theology aimed at helping to eradicate the existing socio-political order. This article gave a missiological overview of Black theology and examined and assessed the relevance of this theology to contemporary post-apartheid South Africa. The critical-theological research method was used.
NOx and O3 above a tropical rainforest: an analysis with a global and box model
Authors: Pike R. C. , Lee J. D. , Young P. J. , Carver G. D. , Yang X. , Warwick N. , Moller S. , Misztal P. , Langford B. , Stewart D. , Reeves C. E. , Hewitt C. N. , Pyle J. A.
Published: November 2010

Abstract. A cross-platform field campaign, OP3, was conducted in the state of Sabah in Malaysian Borneo between April and July of 2008. Among the suite of observations recorded, the campaign included measurements of NOx and O3 – crucial outputs of any model chemistry mechanism. We describe the measurements of these species made from both the ground site and aircraft. We then use the output from two resolutions of the chemistry transport model p-TOMCAT to illustrate the ability of a global model chemical mechanism to capture the chemistry at the rainforest site. The basic model performance is good for NOx and poor for ozone. A box model containing the same chemical mechanism is used to explore the results of the global model in more depth and make comparisons between the two. Without some parameterization of the nighttime boundary layer – free troposphere mixing (i.e. the use of a dilution parameter), the box model does not reproduce the observations, pointing to the importance of adequately representing physical processes for comparisons with surface measurements. We conclude with a discussion of box model budget calculations of chemical reaction fluxes, deposition and mixing, and compare these results to output from p-TOMCAT. These show the same chemical mechanism behaves similarly in both models, but that emissions and advection play particularly strong roles in influencing the comparison to surface measurements.
Confidence intervals for the coefficient of L-variation in hydrological applications
Authors: Viglione A.
Published: November 2010

Abstract. The coefficient of L-variation (L-CV) is commonly used in statistical hydrology, in particular in regional frequency analysis, as a measure of steepness for the frequency curve of the hydrological variable of interest. As opposed to the point estimation of the L-CV, in this work we are interested in the estimation of the interval of values (confidence interval) in which the L-CV is included at a given level of probability (confidence level). Several candidate distributions are compared in terms of their suitability to provide valid estimators of confidence intervals for the population L-CV. Monte-Carlo simulations of synthetic samples from distributions frequently used in hydrology are used as a basis for the comparison. The best estimator proves to be provided by the log-Student t distribution whose parameters are estimated without any assumption on the underlying parent distribution of the hydrological variable of interest. This estimator is shown to also outperform the non parametric bias-corrected and accelerated bootstrap method. An illustrative example of how this result can be used in hydrology is presented, namely in the comparison of methods for regional flood frequency analysis. In particular, it is shown that the confidence intervals for the L-CV can be used to assess the amount of spatial heterogeneity of flood data not explained by regionalization models.
Anti‐Estrogen‐Loaded Superparamagnetic Liposomes for Intracellular Magnetic Targeting and Treatment of Breast Cancer Tumors
Authors: Plassat Vincent , Wilhelm Claire , Marsaud Véronique , Ménager Christine , Gazeau Florence , Renoir Jack‐Michel , Lesieur Sylviane
Published: November 2010

The selective delivery of the steroid anti‐estrogen RU 58668 (RU) to human breast cancer MCF‐7 cells by using nanoscaled hybrid liposomes, labelled with rhodamine, coated by poly(ethylene glycol) and entrapping superparamagnetic nanocrystals of maghemite (γ‐Fe2O3) was investigated. Stable drug incorporation within the vesicle bilayer was ascertained by differential scanning calorimetry and small‐angle X‐ray diffraction. The study of the interactions with living tumor cells of the magnetic‐fluid‐loaded liposomes containing RU molecules (RU‐MFLs) showed a significant improvement in RU‐MLF uptake through their guidance by a magnetic field gradient of 155 T m−1 produced by a 0.44 T external magnet placed in the near vicinity of the cells. RU‐MFLs enter the cells by endocytosis, as revealed by electron microscopy, and greatly accumulate therein as intact structures, as supported by confocal fluorescence microscopy images, which revealed a lipid vesicle pathway, as well as by independent iron oxide quantification by magnetophoresis or electron spin resonance. Inhibition assay of estradiol‐induced transcription of the luciferase reporter gene in MELN cells confirmed that RU anti‐estrogenic activity was entirely preserved upon its liposome‐mediated intracellular uptake. This work provides a proof of concept of intracellular magnetic targeting of a therapeutic substance by means of superparamagnetic liposomes, which is especially promising as a tool for cancer therapy.
Nano‐fibers produced by viral infection of amoeba visualized by atomic force microscopy
Authors: Kuznetsov Yurii G. , McPherson Alexander
Published: November 2010

In the course of an atomic force microscopy investigation of mimivirus, we observed that disrupted virions released masses of fibers that were several hundreds of nanometers in length and that could not be explained as nucleic acid or polysaccharide. The fibers exhibited a strong 7 nm periodicity along their lengths. They existed singly, and also as ribbons, cables, and in multi stranded coils. In the aggregate structures, the periodic bands of the individual fibers aligned laterally to produce ribbons and other superstructures having a corresponding pattern of 7 nm periodic transverse bands. We have not observed such fibers in studies of other virus and cellular systems. The fibers are mechanically flexible and resistant to breakage. Occasionally fibers were associated with toroidal protein complexes, assumed to be processive enzyme complexes, apparently in the act of modifying the fibers. © 2010 Wiley Periodicals, Inc. Biopolymers 95: 234–239, 2011.
ChemInform Abstract: Redetermination of Iron Dialuminide, FeAl2.
Authors: Chumak Ihor , Richter Klaus W. , Ehrenberg Helmut
Published: November 2010

The crystal structure of FeAl2 is redetermined by single crystal XRD.
ChemInform Abstract: SrAu0.5Pt0.5 and CaAu0.5Pt0.5, Analogues to the Respective Ba Compound, but Featuring Purely Intermetallic Behavior.
Authors: Saltykov Vyacheslav , Nuss Juergen , Konuma Mitsuharu , Jansen Martin
Published: November 2010

The title compounds are obtained from mixtures of the corresponding elements (Ta tube, Ar, 1223 K, 2 d) and characterized by single crystal XRD, ESCA, electrical resistivity, and magnetic measurements.
ChemInform Abstract: Photocoercivity of Nano‐Stabilized Au:Fe Superparamagnetic Nanoparticles.
Authors: Bogani Lapo , Cavigli Lucia , de Julian Fernandez Cesar , Mazzoldi Paolo , Mattei Giovanni , Gurioli Massimo , Dressel Martin , Gatteschi Dante
Published: November 2010

Au:Fe (Fe38Au62) nanoparticles, prepared by ion implantation, show light‐induced switching of the coercive field with exceptionally good magneto‐optical response.
ChemInform Abstract: Alternative Approach to Increasing Li Mobility in Li—La—Nb/Ta Garnet Electrolytes.
Authors: Nyman May , Alam Todd M. , McIntyre Sarah K. , Bleier Grant C. , Ingersoll David
Published: November 2010

The tetrahedral, less mobile Li sites of the solid state lithium electrolytes Li5La3Ta2O12 and Li5La3Nb2O12 are vacated by repeated mixing and heating solid state processing or by aqueous H+/Li+ exchange, followed by water vaporization.
ChemInform Abstract: Self‐Doped Ti3+ Enhanced Photocatalyst for Hydrogen Production under Visible Light.
Authors: Zuo Fan , Wang Le , Wu Tao , Zhang Zhenyu , Borchardt Dan , Feng Pingyun
Published: November 2010

TiO2‐x is prepared by combustion of an EtOH solution containing HCl, Ti(OiPr)4, and 2‐ethylimidazole at 500 °C in air followed by annealing for 5 h.
ChemInform Abstract: Dissolving Silicides: Syntheses and Crystal Structures of New Ammoniates Containing Si52‐ and Si94‐ Polyanions and the Role of Ammonia of Crystallization.
Authors: Joseph Stefanie , Suchentrunk Christof , Korber Nikolaus
Published: November 2010

Dissolution of (I) in liquid ammonia yields the compounds (II) and (III) which are characterized by single crystal XRD.
ChemInform Abstract: “One‐Step” Synthesis of Nonsolvated Aluminum Hydride.
Authors: Bulychev B. M. , Storozhenko P. A. , Fokin V. N.
Published: November 2010

Nonsolvated AlH3 is prepared by direct reaction of LiAlH4 with AlCl3 in a 1:1 ether—toluene mixture (≥90 °C, ≥80% yield).
ChemInform Abstract: Homoatomic Stella Quadrangula [TI8]6‐ in Cs18TI8O6, Interplay of Spin—Orbit Coupling, and Jahn—Teller Distortion.
Authors: Wedig Ulrich , Saltykov Vyacheslav , Nuss Juergen , Jansen Martin
Published: November 2010

Cs18TI8O6 is prepared by reaction of an equimolar mixture of CsTl and Cs2O (Ta tube, 573 K, 7 d) and characterized by single crystal XRD, magnetization measurements, and relativistic DFT calculations.
ChemInform Abstract: Tunable and Rapid Crystallization of Phase Pure Bi2MoO6 (Koechlinite) and Bi2Mo3O12 via Continuous Hydrothermal Synthesis.
Authors: Gruar Robert , Tighe Christopher James , Reilly Lee M. , Sankar Gopinathan , Darr Jawwad Arshad
Published: November 2010

Phase pure nanoparticles of Bi2MoO6 and Bi2Mo3O12 are prepared in a continuous hydrothermal flow synthesis reactor from solutions of acidified Bi(NO3)3 and basic H2MoO4 with Bi:Mo ratios of 2:1, and 2:3, respectively, using supercritical water of 375—450 °C at a pressure of 24.1 MPa as a crystallization medium (82 and 86% yield of Bi2Mo3O12 and Bi2MoO6, respectively).
ChemInform Abstract: NaMnFe2(PO4)3 Alluaudite Phase: Synthesis, Structure, and Electrochemical Properties As Positive Electrode in Lithium and Sodium Batteries.
Authors: Trad Khiem , Carlier Dany , Croguennec Laurence , Wattiaux Alain , Amara Mongi Ben , Delmas Claude
Published: November 2010

The title compound is prepared by solid state reaction of Na2CO3, MnCO3, FeC2O4, and NH4H2PO4 at 900 °C, and by the Pechini sol—gel method starting with stoichiometric mixtures of the same educts in aqueous solutions containing citric acid (800 °C, 30 min).
ChemInform Abstract: Noncentrosymmetric Cation Order in the Cubic Perovskite Ba4CaFe3O9.5.
Authors: Turp Sarah A. , Hargreaves Joanna , Baek Jaewook , Halasyamani P. Shiv , Hayward Michael A.
Published: November 2010

The title compound is prepared by solid state reaction of BaCO3, Fe2O3, and CaCO3 (Ar, 1250 °C, 80 h).
ChemInform Abstract: Modular Inorganic Polyoxometalate Frameworks Showing Emergent Properties: Redox Alloys.
Authors: Cronin Leroy , et al. et al.
Published: November 2010

Two new members (IIIa,b) of the “Keggin net” family of extended modular frameworks are synthesized.
ChemInform Abstract: Aza‐Michael Addition Reactions of Hydrazones with Activated Alkynes Catalyzed by Nitrogen‐Containing Organic Bases.
Authors: Yuan Zhi‐Liang , Wei Yin , Shi Min
Published: November 2010

The title reactions proceed smoothly and the corresponding adducts are achieved in moderate to excellent yield and with high Z‐selectivity.
ChemInform Abstract: Hypervalent Iodine Oxidation of Phenol Derivatives Using a Catalytic Amount of 4‐Iodophenoxyacetic Acid and Oxone® as a Cooxidant.
Authors: Yakura Takayuki , Omoto Masanori , Yamauchi Yu , Tian Yuan , Ozono Ayaka
Published: November 2010

The title reaction provides an efficient and practical method for the preparation of p‐quinols and p‐quinones.
ChemInform Abstract: Hypervalent Iodine‐Mediated Oxygenative Phenol Dearomatization Reactions.
Authors: Pouysegu Laurent , Sylla Tahiri , Garnier Tony , Rojas Luis B. , Charris Jaime , Deffieux Denis , Quideau Stephane
Published: November 2010

Hypervalent iodine compounds are useful reagents in the dearomatization of phenols and in the chemo‐ and regioselective demethylation of 2‐methoxyphenols into catechols.
ChemInform Abstract: A Convergent Approach to (R)‐Tiagabine by a Regio‐ and Stereocontrolled Hydroiodination of Alkynes.
Authors: Bartoli Giuseppe , Cipolletti Roberto , Di Antonio Giustino , Giovannini Riccardo , Lanari Silvia , Marcolini Mauro , Marcantoni Enrico
Published: November 2010

A variety of terminal or internal alkynes are iodinated by the NaI/CeCl3·7H2O system to give the corresponding iodoalkenes with high regioselectivity.
ChemInform Abstract: Copper‐Catalyzed Alkynylation of Amides with Potassium Alkynyltrifluoroborates: A Room‐Temperature, Base‐Free Synthesis of Ynamides.
Authors: Jouvin Kevin , Couty Francois , Evano Gwilherm
Published: November 2010

The process allows an easy access to a broad spectrum of useful building blocks.
ChemInform Abstract: Efficient in situ Three‐Component Formation of Chiral Oxazoline‐Schiff Base Copper(II) Complexes: Towards Combinatorial Library of Chiral Catalysts for Asymmetric Henry Reaction.
Authors: Yang Wen , Liu Han , Du Da‐Ming
Published: November 2010

A library of chiral oxazoline—Schiff base catalysts for asymmetric Henry reactions is synthesized which can be used as in situ generated ones.
ChemInform Abstract: Zinc(II)‐Catalyzed Addition of Grignard Reagents to Ketones.
Authors: Hatano Manabu , Ito Orie , Suzuki Shinji , Ishihara Kazuaki
Published: November 2010

The simple, efficient, and widely applicable method allows the preparation of tertiary alcohols as well as secondary alcohols and amines.
ChemInform Abstract: Novel One‐Pot Method for Chemoselective Bromination and Sequential Sonogashira Coupling.
Authors: Kutsumura Noriki , Niwa Kentaro , Saito Takao
Published: November 2010

The dibromoalkane formation in the first step is followed by DBU‐promoted selective elimination to produce 2‐bromoalkenes with high selectivity and generally good to excellent yields.
ChemInform Abstract: Organocatalytic Asymmetric Cyanosilylation of Nitroalkenes.
Authors: Bernal Pablo , Fernandez Rosario , Lassaletta Jose M.
Published: November 2010

The unprecedented cyanosilylation of nitroalkenes is accomplished by using a cinchona‐based bifunctional catalyst, which incorporates the active nucleophile (cyanide) and binds the substrate via thiourea/nitronate hydrogen bonds.
ChemInform Abstract: Catalytic SN2′‐Selective Substitution of Allylic Chlorides with Arylboronic Esters.
Authors: Whittaker Aaron M. , Rucker Richard P. , Lalic Gojko
Published: November 2010

Optimized conditions lead to a nearly exclusive formation of the desired products and only low to trace amounts of alkenes resulting from SN2 arylation are identified [cf.
ChemInform Abstract: Silver‐Catalyzed Difunctionalization of Terminal Alkynes: Highly Regio‐ and Stereoselective Synthesis of (Z)‐β‐Haloenol Acetates.
Authors: Chen Zhengwang , Li Jinghao , Jiang Huanfeng , Zhu Shifa , Li Yibiao , Qi Chaorong
Published: November 2010

The products are attractive intermediates, since the halogen function can be used for further transformations [cf.
ChemInform Abstract: Bromophilic Substitution/Carbophilic Substitution Cascade Reactions of α,α‐Dibromo‐2‐methoxyacetophenone with C‐, N‐ and O‐Nucleophiles.
Authors: Tatar Jovana , Markovic Rade , Stojanovic Milovan , Baranac‐Stojanovic Marija
Published: November 2010

Generall, α‐monosubstituted 2‐methoxyacetophenones are obtained from the title reaction.
ChemInform Abstract: syn‐Selective Catalytic Asymmetric 1,4‐Addition of α‐Ketoanilides to Nitroalkenes under Dinuclear Nickel Catalysis.
Authors: Xu Yingjie , Matsunaga Shigeki , Shibasaki Masakatsu
Published: November 2010

The syn‐selectivity is complementary to the anti‐selective reaction carried out with a mononuclear Nickel catalyst.
ChemInform Abstract: Pd‐Catalyzed Cross‐Coupling of Carboxylic Acids with Nitroethane via Combination of Decarboxylation and Dehydrogenation.
Authors: Zhang Min , Zhou Jun , Kan Jian , Wang Min , Su Weiping , Hong Maochun
Published: November 2010

The first metal‐catalyzed methodology for the cross‐coupling of a broad range of benzoic acids with nitroethane furnishing exclusively (E)‐β‐nitrostyrenes is described.
ChemInform Abstract: An Efficient, Recoverable Fluorous Organocatalyst for Direct Reductive Amination of Aldehydes.
Authors: Huang Yi‐Bo , Yi Wen‐Bin , Cai Chun
Published: November 2010

The reductive amination procedure in the presence of Hantzsch dihydropyridine as reducing agent and a fluorous thiourea catalyst can be applied to a wide range of substrates.
ChemInform Abstract: Synthesis of Functionalized Resorcinols by Rhodium‐Catalyzed [5 + 1] Cycloaddition Reaction of 3‐Acyloxy‐1,4‐enynes with CO.
Authors: Brancour Celia , Fukuyama Takahide , Ohta Yuko , Ryu Ilhyong , Dhimane Anne‐Lise , Fensterbank Louis , Malacria Max
Published: November 2010

A mechanism involving Rh‐catalyzed cyclocarbonylation of 3‐acyloxy‐1,4‐enynes accompanied by 1,2‐acyloxy‐shift is proposed for the novel [5 + 1] type cycloaddition reaction.
ChemInform Abstract: Mixed Ligand Cobalt(II) Complex as an Efficient Catalyst for Oxidative Deoximation Using Hydrogen Peroxide.
Authors: Das Pranab J. , Das Amal , Baruah Akashi
Published: November 2010

The catalyst (no details given) can be successfully used for the regeneration of aldehydes and ketones.
ChemInform Abstract: The First Example of Saccharin—Lithium Bromide Catalysis: Direct Synthesis of N‐Tosylimines from Alcohols.
Authors: Patel Rajesh , Srivastava Vishnu P. , Yadav Lal Dhar S.
Published: November 2010

Chloramine‐T (II) oxidizes the alcohols (I) and (IV) to the corresponding aldehydes and thereby produces p‐toluenesulfonamide, which subsequently condenses with the aldehydes to generate N‐tosylimines (III) and (V), respectively.
ChemInform Abstract: Regioselective Synthesis of 5‐Chlorosalicylates by One‐Pot Cyclization of 1,3‐Bis(trimethylsilyloxy)buta‐1,3‐dienes with 2‐Chloro‐3‐ethoxy‐2‐alken‐1‐ones.
Authors: Fatunsin Olumide , Shkoor Mohanad , Toguem Serge‐Mitherand Tengho , Riahi Abdolmajid , Aiyelaagbe Olapeju O. , Akintayo Emmanuel T. , Fischer Christine , Langer Peter
Published: November 2010

The reaction proceeds with very good regioselectivity, but with moderate yields only.
ChemInform Abstract: Gold‐Catalyzed Regiospecific Intermolecular Hydrothiolation of Allenes.
Authors: Menggenbateer Menggenbateer , Narsireddy Meda , Ferrara Giovanni , Nishina Naoko , Jin Tienan , Yamamoto Yoshinori
Published: November 2010

The reaction takes place at the central carbon of the allenes and is successful if aromatic substrates are used.
ChemInform Abstract: New Cyclopalladated Benzothiophenes: A Catalyst Precursor for the Suzuki Coupling of Deactivated Aryl Chlorides.
Authors: Subhas Madavu Salian , Racharlawar Shailesh S. , Sridhar B. , Kennady P. Kavin , Likhar Pravin R. , Kantam Mannepalli Lakshmi , Bhargava Suresh K.
Published: November 2010

Newly synthesized trans‐bis(tricyclohexylphosphine) palladium complex obtained by treatment of dimeric benzothiophene‐based palladacycles with an excess of phosphine, is found to be an active catalyst in the Suzuki coupling of electron rich aryl chlorides.
ChemInform Abstract: A Novel, Air‐Stable Phosphine Ligand for the Palladium‐Catalyzed Suzuki—Miyaura Cross‐Coupling Reaction of Chloro Arenes.
Authors: Ghosh Raju , Adarsh N. N. , Sarkar Amitabha
Published: November 2010

The new phosphine (IPL) is an efficient ligand for the process.
ChemInform Abstract: AlCl3 and BDMAEE: A Pair of Potent Reactive Regulators of Aryl Grignard Reagents and Highly Catalytic Asymmetric Arylation of Aldehydes.
Authors: Fan Xin‐Yuan , Yang Yong‐Xin , Zhuo Fang‐Fang , Yu Sheng‐Li , Li Xiao , Guo Qi‐Peng , Du Zhi‐Xue , Da Chao‐Shan
Published: November 2010

A highly asymmetric catalytic addition of various aryl Grignard reagents to aldehydes is achieved at room temperature with (S)‐H8‐BINOL and inexpensive commercially available Ti(OiPr)4.
ChemInform Abstract: Palladium‐Catalyzed Cyclocoupling of 2‐Halobiaryls with Isocyanides via the Cleavage of Carbon—Hydrogen Bonds.
Authors: Tobisu Mamoru , Imoto Shinya , Ito Sana , Chatani Naoto
Published: November 2010

The process provides a new and efficient approach to fluorenone imine derivatives and the nature of the isocyanide has a strong influence on the success.
ChemInform Abstract: Polymer‐Supported Oxone and tert‐Butyl Hydroperoxide: New Reagents for the Epoxidation of α,β‐Unsaturated Aldehydes and Ketones.
Authors: Pourali Ali Reza
Published: November 2010

Polyvinylpyrrolidone‐supported Oxone and tBuOOH are mild, stable, recyclable and environmentally friendly reagents for the selective, clean and safe epoxidation of α,β‐unsaturated carbonyl compounds.
ChemInform Abstract: Intramolecular Michael Addition Reaction for the Synthesis of Benzylbutyrolactones.
Authors: He Hu , Dai Li‐Xin , You Shu‐Li
Published: November 2010

Intramolecular Michael reaction of nitro‐substituted aryl allyl β‐ketocarboxylates, e.g. (I), (III) and (V), proceeds smoothly under mild conditions to give benzylbutyrolactones (II), (IV) and (VI), resp., in good to excellent yields.
ChemInform Abstract: Selective and Efficient Cycloisomerization of Alkynols Catalyzed by a New Ruthenium Complex with a Tetradentate Nitrogen—Phosphorus Mixed Ligand.
Authors: Liu Pei Nian , Su Fu Hai , Wen Ting Bin , Sung Herman H.‐Y. , Williams Ian D. , Jia Guochen
Published: November 2010

Five‐, six‐, and seven‐membered endocyclic enol ethers are prepared in good to excellent yield by the title reaction.
ChemInform Abstract: Chiral Hypervalent Iodine‐Catalyzed Enantioselective Oxidative Kita Spirolactonization of 1‐Naphthol Derivatives and One‐Pot Diastereoselective Oxidation to Epoxyspirolactones.
Authors: Uyanik Muhammet , Yasui Takeshi , Ishihara Kazuaki
Published: November 2010

A chiral catalyst for the enantioselective Kita oxidative spirolactonization of naphthol derivatives (I) is developed.
ChemInform Abstract: Hydroxyterphenylphosphine—Palladium Catalyst for Benzo[b]furan Synthesis from 2‐Chlorophenols. Bifunctional Ligand Strategy for Cross‐Coupling of Chloroarenes.
Authors: Wang Jia‐Rui , Manabe Kei
Published: November 2010

2‐Chlorophenols undergo efficient coupling with alkynes to afford various benzofuran derivatives in one‐pot.
ChemInform Abstract: Base Catalyzed Intramolecular Cycloaddition of Dialkyl(4‐hydroxybutyn‐2‐yl)[3‐(p‐tolyl)propyn‐2‐yl]ammonium Chlorides and Intramolecular Recyclization of the Products Obtained.
Authors: Chukhajian E. O. , Ayrapetyan L. V. , Chukhajian El. O. , Panosyan H. A.
Published: November 2010

Isoindolinium chlorides (IV) are obtained in a diene synthesis type intramolecular cyclization in aqueous base medium starting from ammonium chlorides (III).
ChemInform Abstract: A Simple Primary Amine Thiourea Catalyzed Highly Enantioselective Conjugate Addition of α,α‐Disubstituted Aldehydes to Maleimides.
Authors: Xue Fei , Liu Lu , Zhang Shilei , Duan Wenhu , Wang Wei
Published: November 2010

The approach serves as a powerful tool for the preparation of synthetically and biologically important chiral disubstituted α‐branched succinimides.
ChemInform Abstract: Organocatalytic Enantioselective Hydroxymethylation of Oxindoles with Paraformaldehyde as C‐1 Unit.
Authors: Liu Xiong‐Li , Liao Yu‐Hua , Wu Zhi‐Jun , Cun Lin‐Feng , Zhang Xiao‐Mei , Yuan Wei‐Cheng
Published: November 2010

It allows a mild, efficient, and highly enantioselective access to a number of 3,3‐disubstituted oxindoles.
ChemInform Abstract: Pd(OAc)2‐Catalyzed Regioselective Arylation of Indoles with Arylsiloxane in Acidic Medium.
Authors: Liang Zunjun , Yao Bangben , Zhang Yuhong
Published: November 2010

The optimized mild conditions allow the use of electron‐deficient silanes for a selective arylation at C‐2 of the indole nucleus.
ChemInform Abstract: 2,3‐Disubstituted Indoles via Palladium‐Catalyzed Reaction of 2‐Alkynyltrifluoroacetanilides with Arenediazonium Tetrafluoroborates.
Authors: Cacchi Sandro , Fabrizi Giancarlo , Goggiamani Antonella , Perboni Alcide , Sferrazza Alessio , Stabile Paolo
Published: November 2010

Various substituents including halogen permit further coupling reactions.
ChemInform Abstract: Organocatalytic Michael Addition of Unprotected 3‐Substituted Oxindoles to Nitroolefins.
Authors: Ding Miao , Zhou Feng , Qian Zi‐Qing , Zhou Jian
Published: November 2010

The first Michael addition of unprotected 3‐substituted oxindoles to nitroolefins is presented.
ChemInform Abstract: Palladium on Carbon‐Catalyzed Synthesis of 2‐ and 2,3‐Substituted Indoles under Heterogeneous Conditions.
Authors: Monguchi Yasunari , Mori Shigeki , Aoyagi Satoka , Tsutsui Azusa , Maegawa Tomohiro , Sajiki Hironao
Published: November 2010

Palladium‐catalyzed heteroannulation of o‐iodoanilines (I) with various alkynes proceeds smoothly under mild LiCl‐free conditions to give title indoles in moderate to good yields.
ChemInform Abstract: Reactions of 2‐Aryl‐1,1‐dicyanoethenes with L‐Proline and Aldehydes.
Authors: Nosachev S. B. , Poddubnyi O. Yu. , Velikorodov A. V. , Tyrkov A. G.
Published: November 2010

Previously unknown pyrrolysine derivatives (IV) are obtained by three‐component heterocyclization of L‐proline with 2‐aryl‐1,1‐dicyanoethenes and aldehydes.
ChemInform Abstract: A Modular Sydnone Cycloaddition/Suzuki—Miyaura Cross‐Coupling Strategy to Unsymmetrical 3,5‐Bis(hetero)aromatic Pyrazoles.
Authors: Delaunay Thierry , Genix Pierre , Es‐Sayed Mazen , Vors Jean‐Pierre , Monteiro Nuno , Balme Genevieve
Published: November 2010

The introduction of C‐3 and C‐5 substituents at the protected pyrazole ring is possible in a one‐pot reaction with a wide scope of boronic acids.
ChemInform Abstract: Synthesis of Pyrazolines by a Site Isolated Resin‐Bound Reagents Methodology.
Authors: Gembus Vincent , Bonnet Jean‐Jacques , Janin Francois , Bohn Pierre , Levacher Vincent , Briere Jean‐Francois
Published: November 2010

An organocatalytic domino aza‐Michael—transimination reaction sequence of hydrazones with various enones is smoothly achieved using a mixture of polystyrene‐bound acid/base reagents.
ChemInform Abstract: General Regioselective Synthesis and Crystal Structure of Racemic 5‐Substituted 2,2‐Dimethyl‐3‐hydroxyimidazolidin‐4‐ones.
Authors: Vystorop Igor V. , Nelyubina Yulia V. , Voznesensky Vladimir N. , Sun Wen‐Hua , Lodygina Vera P. , Lyssenko Konstantin A. , Kostyanovsky Remir G.
Published: November 2010

Cyclic hydroxamic acids (III) are regioselectively obtained in a self‐catalytic cyclocondensation reactions of racemic valine, leucine, and β‐phenylalanine hydroxamic acids with acetone under mild reaction conditions.
ChemInform Abstract: Polyethylene Glycol: A Recyclable Solvent System for the Synthesis of Benzimidazole Derivatives Using CAN as Catalyst.
Authors: Kidwai Mazaahir , Jahan Anwar , Bhatnagar Divya
Published: November 2010

A novel and highly efficient procedure for the synthesis of benzimidazoles (III) (15 examples) from o‐phenylenediamine and aryl aldehydes is given.
ChemInform Abstract: Efficient Synthesis of 2‐Arylbenzothiazole Derivatives with the Aid of a Low‐Valent Titanium Reagent.
Authors: Shi Da‐Qing , Rong Shao‐Feng , Dou Guo‐Lan
Published: November 2010

Advantages of the title procedure are the easily accessible starting materials and the short reaction time.
ChemInform Abstract: Synthesis of 4(6)‐Amino‐6(4)‐halo‐2,1,3‐benzoxadiazoles.
Authors: Gornostaev L. M. , Bocharova E. A. , Dolgushina L. V. , Bagryanskaya I. Yu. , Gatilov Yu. V.
Published: November 2010

Synthetic strategies for 4,6‐disubstituted 2,1,3‐benzoxadiazoles are presented.
ChemInform Abstract: Modular Synthesis of 1,2‐Diamine Derivatives by Palladium‐Catalyzed Aerobic Oxidative Cyclization of Allylic Sulfamides.
Authors: McDonald Richard I. , Stahl Shannon S.
Published: November 2010

The cyclizations are performed with molecular oxygen as the sole stoichiometric oxidant in the presence of an optimized catalyst system to give the desired cyclic sulfamide products.
ChemInform Abstract: One‐Pot Synthesis of Furocoumarins via Sequential Pd/Cu‐Catalyzed Alkynylation and Intramolecular Hydroxyalkoxylation.
Authors: Chen Lei , Li Yi , Xu Ming‐Hua
Published: November 2010

A novel method for the synthesis of furocoumarins is presented starting from 3‐bromo‐4‐acetoxycoumarins and terminal alkynes.
ChemInform Abstract: Microwave‐Promoted, One‐Pot, Solvent‐Free Synthesis of 4‐Arylcoumarins from 2‐Hydroxybenzophenones.
Authors: Crecente‐Campo Jose , Vazquez‐Tato M. Pilar , Seijas Julio A.
Published: November 2010

A highly efficient, microwave‐assisted, solvent‐free synthesis of neoflavonoids is developed.
ChemInform Abstract: Palladium‐Catalyzed Synthesis of 4‐Arylcoumarins Using Triarylbismuth Compounds as Atom‐Efficient Multicoupling Organometallic Nucleophiles.
Authors: Rao Maddali L. N. , Venkatesh Varadhachari , Jadhav Deepak N.
Published: November 2010

A wide range of arylcoumarin derivatives, e.g. (III), (VI), (VIII) and (X), is synthesized by reaction of the corresponding bromo‐ or triflyloxycoumarins with triarylbismuth (II) and (V).
ChemInform Abstract: Rearrangement of 3‐Aminoisoxazolo[4,5‐c]coumarins into 2‐Amino‐oxazolo[4,5‐c]coumarins Mediated by Carboxylic Acid Anhydrides.
Authors: Sosnovskikh Vyacheslav Ya. , Moshkin Vladimir S. , Kodess Mikhail I.
Published: November 2010

3‐Aminoisoxazolocoumarins (I) smoothly react with carboxylic acid anhydrides affording the corresponding N‐acyl derivatives, which rearrange into 2‐aminochromenooxazolones [cf.
ChemInform Abstract: HClO4—SiO2‐Catalyzed Synthesis of 12‐Aryl‐12H‐benzo[i][1,3]dioxolo[4,5‐b]xanthene‐6,11‐diones and 10‐Aryl‐6,7,8,10‐tetrahydro‐7,7‐dimethyl‐9H‐[1,3]dioxolo [4,5‐b]xanthen‐9‐ones.
Authors: Wu Liqiang , Wu Yanfang , Yan Fulin , Fang Lizhen
Published: November 2010

A simple, efficient, and green method for the synthesis of the title compounds (IV) and (VII), resp., is developed using HClO4‐SiO2 as catalyst in appropriate three‐component reactions under solvent‐free conditions.
ChemInform Abstract: A Three‐Component Synthesis of β‐Alkoxy‐β‐keto‐enamides — Flexible Precursors for 4‐Hydroxypyridine Derivatives and Their Palladium‐Catalyzed Reactions.
Authors: Lechel Tilman , Dash Jyotirmayee , Eidamshaus Christian , Bruedgam Irene , Lentz Dieter , Reissig Hans‐Ulrich
Published: November 2010

The present new three‐component reactions of lithiated alkoxyallene (I) and (XIX) with nitriles and carboxylic acids provide highly functionalized ‐alkoxy‐‐ketoenamides (IV) and (X) which are further cyclized into different pyridine derivatives.
ChemInform Abstract: Efficient One‐Pot Synthesis of Substituted Pyridines Through Multicomponent Reaction.
Authors: Xin Xin , Wang Yan , Kumar Santosh , Liu Xu , Lin Yingjie , Dong Dewen
Published: November 2010

The present new facile and convenient synthesis of substituted pyridines involves a one‐pot four‐component reaction of easily available 1,3‐dicarbonyl compounds, aromatic aldehydes, malononitrile and alcohol in the presence of NaOH under mild conditions.
ChemInform Abstract: Titanium‐Mediated Spirocyclization Reactions of 4‐Alkylpyridines.
Authors: Parameswarappa Sharavathi G. , Pigge F. Christopher
Published: November 2010

The method can be applied to various types of substrates.
ChemInform Abstract: A General Methodology for the Enantioselective Synthesis of 1‐Substituted Tetrahydroisoquinoline Alkaloids.
Authors: Amat Mercedes , Elias Viviane , Llor Nuria , Subrizi Fabiana , Molins Elies , Bosch Joan
Published: November 2010

Starting from the known tricyclic lactam (I), a three‐step synthetic route to 1‐substituted tetrahydroisoquinoline alkaloids is presented.
ChemInform Abstract: Room Temperature, Copper‐Catalyzed Amination of Bromonaphthyridines with Aqueous Ammonia.
Authors: Anderson Cyrus A. , Taylor Phillip G. , Zeller Mary A. , Zimmerman Steven C.
Published: November 2010

The resulting aminonaphthyridines can smoothly be converted into synthetically useful nonsymmetric 2,7‐diamidonaphthyridines.
ChemInform Abstract: Two‐Component Approach Toward a Fully Substituted N‐Fused Pyrrole Ring.
Authors: Chernyak Dmitri , Skontos Cathy , Gevorgyan Vladimir
Published: November 2010

Propargylic esters are coupled with aryl iodides via an arylation/cyclization cascade.
ChemInform Abstract: Stereoselective Synthesis of Pyrano[3,2‐c]‐ and Furano[3,2‐c]quinolines: Gadolinium Chloride Catalyzed One‐Pot Aza‐Diels—Alder Reactions.
Authors: Yu Yong , Zhou Jun , Yao Zhigang , Xu Fan , Shen Qi
Published: November 2010

The three‐component aza‐Diels—Alder reaction between dihydrofuran or dihydropyran (I), aromatic amines (II), and aromatic aldehydes (III) proceeds stereoselectively providing the cis products (IV) with 86% selectivity on average.
ChemInform Abstract: Reduction of Dipyrido Ureas via 6‐Alkyloxydipyrido[1,2‐c;2′,1′‐e]imidazolium Salts.
Authors: Kunz Doris , Deissler Christine , Gierz Verena , Rominger Frank , Oeser Thomas
Published: November 2010

Reduction of dipyrido uronium salts (VI), which are readily synthesized by alkylation of dipyrido ureas (IV) with Meerwein′s reagent, offers a new and mild synthetic route to dipyridoimidazolium salts (VII).
ChemInform Abstract: Silver Triflate‐Catalyzed Three‐Component Reaction of 2‐Alkynylbenzaldehyde, Sulfonohydrazide, and α,β‐Unsaturated Carbonyl Compound.
Authors: Ye Shengqing , Yang Xiaodi , Wu Jie
Published: November 2010

A variety of pyrazolo[5,1‐a]isoquinolines (III) is readily prepared by a silver‐catalyzed three‐component reaction (26 examples).
ChemInform Abstract: Synthesis of Pyridazinedione Derivatives Starting from Anhydrides of 2,3‐Pyridine‐ and 2,3‐Quinolinedicarboxylic Acids.
Authors: Sakhautdinov I. M. , Tukhvatullin O. R. , Fatykohov A. A. , Galin F. Z.
Published: November 2010

A similar reaction sequence with comparable yields is carried out starting from 2,3‐quinolinedicarboxylic acid anhydride.
ChemInform Abstract: Alkoxy‐5‐nitrosopyrimidines: Useful Building Block for the Generation of Biologically Active Compounds.
Authors: Marchal Antonio , Nogueras Manuel , Sanchez Adolfo , Low John N. , Naesens Lieve , De Clercq Erik , Mulguizo Manuel
Published: November 2010

The substitution of methoxy groups of nitrosobis(methoxy)pyrimidine (I) by various aliphatic and aromatic amines is studied.
ChemInform Abstract: Mild and Efficient Synthesis of Aryliodonium Ylides of 2,6‐Dimethylpyrimidin‐4‐ol.
Authors: Kumar Ravi , Nair Reshmi R. , Prakash Om
Published: November 2010

The reaction of dimethylpyrimidinol (I) with dichloroiodoarenes (II) in aqueous medium provides an easy access to aryliodonium ylides (III).
ChemInform Abstract: The Specific Character of the Reaction of Derivatives of 2‐Thioxo‐2,3‐dihydropyrimidin‐4(1H)‐one with Iodomethane and Alkyl Chloromethyl Sulfides.
Authors: Novakov I. A. , Orlinson B. S. , Nawrozkij M. B. , Mai A. , Artico M. , Rotili D. , Eremiychuk A. S. , Gordeeva E. A. , Brunilina L. L. , Este J. A.
Published: November 2010

The 2‐{[(allylsulfanyl)methyl]sulfanyl}pyrimidin‐4(3H)‐one derivatives (IIIb)‐(IIId) show high anti‐HIV‐1 activities.
ChemInform Abstract: A Novel and Efficient Methodology for the Construction of Quinazolines Based on Supported Copper Oxide Nanoparticles.
Authors: Zhang Jintang , Yu Chenmin Yu , Wang Sujing , Wan Changfeng , Wang Zhiyong
Published: November 2010

The reaction of aminobenzophenones (I) with benzylic amines (II) in the presence of a new heterogeneous catalyst based on CuO nanoparticles and tert‐butyl hydroperoxide as oxidant leads to the desired quinazolines (III) (28 examples) in moderate to high yields.
ChemInform Abstract: Direct B‐Alkyl Suzuki—Miyaura Cross‐Coupling of 2‐Halopurines. Practical Synthesis of ST1535 (VII), a Potent Adenosine A2A Receptor Antagonist.
Authors: Bartoccini Francesca , Cabri Walter , Celona Diana , Minetti Patrizia , Piersanti Giovanni , Tarzia Giorgio
Published: November 2010

Pd‐catalyzed treatment of the halopurines (I) with BBu3 and BEt3 allows mild, efficient, and regioselective access to 2‐alkylated purines.
ChemInform Abstract: A Convenient Preparation of Diastereomerically Pure, Diversely Substituted Piperazine‐2,5‐diones from N‐Protected α‐Amino Acids.
Authors: Nikulnikov Mikhail , Shumsky Alexei , Krasavin Mikhail
Published: November 2010

A convenient protocol for the synthesis of diastereomerically pure trans‐products is demonstrated.
ChemInform Abstract: A Facile Synthesis of Annulated Thiatriazine Dioxides.
Authors: Khodachenko Alexander N. , Shivanyuk Alexander N. , Shishkina Svetlana V. , Shishkin Oleg V. , Nazarenko Konstantin G. , Tolmachev Andrey A.
Published: November 2010

Sulfamoylamidines react with carbonyl compounds (generally aromatic aldehydes) to give the title compounds (III)(34 examples) which can be further functionalized at the free NH position.
ChemInform Abstract: Furan Ring Opening—Pyrrole Ring Closure: A New Synthetic Route to Aryl(heteroaryl)‐Annulated Pyrrolo[1,2‐a][1,4]diazepines.
Authors: Butin Alexander V. , Nevolina Tatyana A. , Shcherbinin Vitaly A. , Trushkov Igor V. , Cheshkov Dmitry A. , Krapivin Gennady D.
Published: November 2010

Acid‐mediated recyclization of N‐(furfuryl)anthranilamides, e.g. (I), affords title (het)aryl‐annulated pyrrolo[1,2‐a]diazepines in moderate yields.
ChemInform Abstract: Conjugate Additions, Aza‐Cope, and Dissociative Rearrangements and Unexpected Electrocyclic Ring Closures in the Reactions of 2‐(2‐Pyrrolidinyl)‐Substituted Heteroaromatic Systems with Acetylenic Sulfones.
Authors: Weston Mitchell H. , Parvez Masood , Back Thomas G.
Published: November 2010

The pyrrolidines (I) and the imidazolidine (IV) react with acetylenic sulfones to afford the 7‐membered heterocycles (III) and (VI) via conjugative addition, dissociation of the C—N bond, and subsequent cyclization.