bluuebunny/crossref_metadata_2025 huggingface dataset:
Adaptive robust control of a class of nonlinear systems in semi‐strict feedback form with non‐uniformly detectable unmeasured internal states
Authors: Lu Lu , Yao Bin
Published: May 2010

This paper proposes a novel control method for a special class of nonlinear systems in semi‐strict feedback form. The main characteristic of this class of systems is that the unmeasured internal states are non‐uniformly detectable, which means that no observer for these states can be designed to make the observation error exponentially converge to zero. In view of this, a projection‐based adaptive robust control law is developed in this paper for this kind of system. This method uses a projection‐type adaptation algorithm for the estimation of both the unknown parameters and the internal states. Robust feedback term is synthesized to make the system robust to uncertain nonlinearities and disturbances. Although the estimation error for both the unknown parameters and the internal states may not converge to zero, the tracking error of the closed‐loop system is proved to converge to zero asymptotically if the system has only parametric uncertainties. Furthermore, it is theoretically proved that all the signals are bounded, and the control algorithm is robust to bounded disturbances and uncertain nonlinearities with guaranteed output tracking transient performance and steady‐state accuracy in general. The class of system considered here has wide engineering applications, and a practical example—control of mechanical systems with dynamic friction—is used as a case study. Simulation results are obtained to demonstrate the applicability of the proposed control methodology. Copyright © 2010 John Wiley & Sons, Ltd.
Novel N‐ethyl‐2‐styrylquinolinium iodides as sensitizers in the photoinitiated free‐radical polymerization of trimethylolopropane triacrylate. II
Authors: Kabatc Janina , Krzyżanowska Edyta , Jędrzejewska Beata , Pietrzak Marek , Pączkowski Jerzy
Published: May 2010

Results of kinetic studies of two‐component photoinitiator systems used in the visible‐light photoinduced polymerization of 2‐ethyl‐2‐(hydroxymethyl)‐1,3‐propanediol triacrylate are presented. Nine different styrylquinolinum dyes coupled with n‐butyltriphenylborate as a coinitiator have been used as photoinitiating systems. Reactive radicals that initiate the polymerization are formed by the well‐known mechanism of photoinduced electron transfer between dye cations acting as electron acceptors and borate anions acting as electron donors. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010
Water‐soluble copolymers. V. Synthesis of low molecular weight amphoteric polyacrylamide by foamed copolymerization
Authors: Peng Xiaohong , Tao Zhenghong , Peng Xiaochun
Published: May 2010

Amphoteric polyacrylamide of acrylamide, acryloyloxyethyl trimethylammonium chloride, sodium acrylate, and acrylic acid was synthesized by foamed copolymerization. The effects of monomer concentration and composition, initiator concentration and composition, sodium bicarbonate and stabilizer content on the polymer intrinsic viscosity and monomer conversion were examined. The monomer conversion increased with increasing initiator concentration, sodium bicarbonate and stabilizer content. The polymer intrinsic viscosity decreased with increasing initiator concentration. The structure and low molecular weight of the amphoteric polymer were identified by fourier transform infrared spectroscopy (FTIR) and gel permeation chromatography (GPC), respectively. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010
Facile method for the synthesis of polystyrene–poly(ethylene glycol) block copolymers
Authors: Feng Libang , Gou Liuxiaohui , Yang Junliang , Luo Yajun , Wang Yulong
Published: May 2010

A facile method for synthesis of polystyrene–poly(ethylene glycol) block copolymers under mild conditions, for instance, ambient temperature and atmospheric pressure, by the direct esterification condensation reaction was developed. The block copolymers were characterized with such techniques as Fourier transform infrared spectroscopy, 1H‐NMR, gel permeation chromatography, differential scanning calorimetry, and X‐ray diffraction. The results show that block copolymers with a yield of over 80% were successfully synthesized with this facile approach, and the resulting block copolymers exhibited both glass‐transition and melting endothermal signals and both amorphous and crystal phases as well; this indicated that the block copolymers had a microphase‐separated structure. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010
Preparation of quaternized carboxymethyl chitosan and its capacity to flocculate COD from printing wastewater
Authors: Cai Zhao‐Sheng , Yang Chun‐Sheng , Zhu Xue‐Mei
Published: May 2010

A bioflocculant, quaternized carboxymethyl chitosan (QCMC), was developed by the quaternization of N,O‐carboxymethyl chitosan (N,O‐CMC) and characterized by FTIR, 1H‐NMR, GPC, and potentiometry. The efficiency of the removal of chemical oxygen demand (COD) in printing wastewater by this flocculant was further reported. Results indicated that the capacity of QCMC to remove the COD from tested wastewater was the best one among the investigated flocculants. The pH had great influence on this capacity and the suitable pH for QCMC to treat the tested wastewater was about 5.0. The utilization of aid‐flocculant, especially bentonite, could improve this capacity obviously, and the increase of mass ratio of bentonite to QCMC resulted in the increase of the capacities of complex flocculant to remove the COD from the tested wastewater. When the mass ratio of bentonite to QCMC was 40, pH of wastewater was 5.0 and amount of complex flocculant in the wastewater was from 2500 to 3142 mg L−1, the removal ratio of COD was more than 80%. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010
The influence of montmorillonite on the anti‐reversion in the rubber–clay composites
Authors: Zhang Peng , Huang Guangsu , Wang Xiao'an , Nie Yijing , Qu Liangliang , Wen Gengsheng
Published: May 2010

The influence of organically modified montmorillonate (OMMT) on the curing reversion of natural rubber (NR) and polychloroprene rubber (CR) blend has been demonstrated in this article. Characteristics of the NR/CR/OMMT hybrid composite were undertaken by combining the cure kinetics, thermal stability, and the detection of phase morphology. Compared to the neat rubber blend, thermal gravity analysis has shown improved thermal stability results during degradation for the nanofiller filled ones. Differential scanning calorimetry study has offered cure kinetic results; among which blending with NR has lifted the cure activation temperature of CR low toward. Meanwhile, transmission electron microscopy has shown the intercalation and immobilization of OMMT in the CR phase formed a barrier to NR phase. In addition, to discover the reversion source, infrared spectroscopy has been applied to trace the oxygenic function units in the neat NR vulcanizate. All of the experimental results and related analysis has offered us the base to explain the improvement of the anti‐reversion of the rubber blends. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010
Microcellular foaming of polymethylmethacrylate in a batch supercritical CO2 process: Effect of microstructure on compression behavior
Authors: Reglero Ruiz Jose Antonio , Viot Philippe , Dumon Michel
Published: May 2010

Microcellular foaming of reinforced core/shell Polymethylmethacrylate (PMMA) was carried out by means of supercritical CO2 in a single‐step process. Samples were produced using a technique based on the saturation of the polymer under high pressure of CO2 (300 bars, 40°C), and cellular structure was controlled by varying the depressurization rate from 0.5 bar/s to 1.6 × 10−2 bar/s leading to cell sizes from 1 μm to 200 μm, and densities from 0.8 to 1.0 g/cm3. It was found that the key parameter to control cell size was depressurization rate, and larger depressurization rates generated bigger cell sizes. On the other hand, variation of the density of the samples was not so considerable. Low rate compression tests were carried out, analyzing the dependence of mechanical parameters such as elastic modulus, yield stress and densification strain with cell size. Moreover, the calculation of the energy absorbed for each sample is presented, showing an optimum of energy absorption up to 50% of deformation in the micrometer cellular range (here at a cell size of about 5 μm). To conclude, a brief comparison between neat PMMA and the core/shell reinforced PMMA has been carried out, analyzing the effect of the core/shell particles in the foaming behavior and mechanical properties. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010
Structural, mechanical and thermal studies of double‐molded isotactic polypropylene nanocomposites with multiwalled carbon nanotubes
Authors: Mina Md. Forhad , Haque Md. Akramul , Bhuiyan Md. Khairul Hassan , Gafur Md. Abdul , Tamba Yukihiro , Asano Tsutomu
Published: May 2010

Nanocomposites of isotactic polypropylene (iPP) and multiwalled carbon nanotubes (MWCNTs) with various contents of MWCNTs were fabricated by double molding techniques. X‐ray diffraction measurements reveal a development of α‐crystal with lamellar stacks having a long period of 150 Å in the neat iPP that increases to 165 Å in 2 wt % MWCNTs‐loaded composites, indicating that MWCNTs enhance crystallization of iPP as a nucleating factor. Mechanical properties, such as tensile strength, flexural strength, Young's modulus, tangent modulus, and microhardness are found to increase with increasing MWCNTs content. Thermal analyses represent an increase of crystallization and melting temperatures and a decrease of thermal stability of the composites with increasing MWCNTs. Changes in structural, mechanical, and thermal properties of the composites due to the addition of MWCNTs are elaborately discussed. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010
Effects of diatomite on extrudate swell behavior of polypropylene composite melts
Authors: Liang J. Z.
Published: May 2010

Extrudate swell (i.e., die swell) is an important parameter for characterization of melt elasticity during extrusion of polymeric melts, and die swell ratio (B) is usually used to describe quantitatively the melt swell degree. The B of the polypropylene (PP) composites filled with diatomite particles was measured by means of a melt flow rate instrument to investigate the effects of the filler content and size on the die swell behavior of the composite system melts under the experimental conditions with temperature from 210 to 230°C and load varying from 1.2 to 7.5 kg. The particle diameters were 5, 7, and 13 μm, and the filler volume fractions were 5, 10, and 15%, respectively. The results showed that the B of the composites decreased nonlinearly with an increase of the filler volume fraction, whereas it increased as a quadratic function with an increase of the particle diameter when the load and temperature were fixed. It might be attributed to the interaction between the inclusions and the matrix, leading to blocking the recovery of the elastic deformation as the composite melts left from the die exit. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010
Surface modification of PHBV films with different functional groups: Thermal properties and in vitro degradation
Authors: Ke Yu , Wang Yingjun , Ren Li , Wu Gang , Xue Wei
Published: May 2010

Polyacrylamide was photografted on solution‐cast poly(3‐hydroxybutyric acid‐co‐3‐hydroxyvaleric acid) (PHBV) films (amide‐PHBV), on which amide groups were transformed into amine groups through Hofmann degradation reaction (amine‐PHBV), followed by collagen coupling reaction to prepare collagen‐modified PHBV (collagen‐PHBV). Amide‐, amine‐, and collagen‐PHBV had higher water absorption and d‐spacing values than PHBV, and melting temperatures and enthalpies decreased in the order of collagen‐PHBV < amine‐PHBV < amide‐PHBV < PHBV. Thermal decomposition kinetics of PHBV component in the films has been investigated by means of nonisothermal thermogravimetric and derivative thermogravimetric studies. Applying the Avrami‐Erofeev equation with index of 2/5 as the probable kinetic function, the suitable activation energy was calculated by the Friedman method through linear fitting (correlation coefficient > 0.98). The activation energy of PHBV was lower than that of amide‐PHBV but higher than that of amine‐ and collagen‐PHBV. Being incubated in phosphate‐buffered saline at 37°C, the modified PHBV films showed more weight loss than PHBV during 360 days; however, pH of degradation fluids was nearly neutral as the initial pH was recorded at 7.2. The modified PHBV films with different functional groups may provide an improved biodegradation rate for various cytocompatible biomaterials constructs. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010
Proteoglycans: Key Regulators of Pulmonary Inflammation and the Innate Immune Response to Lung Infection
Authors: Gill Sean , Wight Thomas N. , Frevert Charles W.
Published: May 2010

Exposure to viruses and bacteria results in lung infections and places a significant burden on public health. The innate immune system is an early warning system that recognizes viruses and bacteria, which results in the rapid production of inflammatory mediators such as cytokines and chemokines and the pulmonary recruitment of leukocytes. When leukocytes emigrate from the systemic circulation through the extracellular matrix (ECM) in response to lung infection they encounter proteoglycans, which consist of a core protein and their associated glycosaminoglycans. In this review, we discuss how proteoglycans serve to modify the pulmonary inflammatory response and leukocyte migration through a number of different mechanisms including: (1) The ability of soluble proteoglycans or fragments of glycosaminoglycans to activate Toll‐like receptor (TLRs) signaling pathways; (2) The binding and sequestration of cytokines, chemokines, and growth factors by proteoglycans; (3) the ability of proteoglycans and hyaluronan to facilitate leukocyte adhesion and sequestration; and (4) The interactions between proteoglycans and matrix metalloproteinases (MMP) that alter the function of these proteases. In conclusion, proteoglycans fine‐tune tissue inflammation through a number of different mechanisms. Clarification of the mechanisms whereby proteoglycans modulate the pulmonary inflammatory response will most likely lead to new therapeutic approaches to inflammatory lung disease and lung infection. Anat Rec, 293:968–981, 2010. © 2010 Wiley‐Liss, Inc.
Randomized controlled trial of bilateral superficial cervical plexus blockversusplacebo in thyroid surgery
Authors: Steffen T , Warschkow R , Brändle M , Tarantino I , Clerici T
Published: May 2010

Background

Bilateral superficial cervical block during thyroid surgery can reduce postoperative pain but its value is unclear. This randomized clinical trial assessed the efficacy of such regional anaesthesia on postoperative pain after thyroid surgery performed under general anaesthesia.

Methods

Patients undergoing thyroid surgery were randomized to one of four groups in a double-blind fashion. Patients received a cervical block with placebo or bupivacaine at the start or end of surgery. Postoperative pain, analgesic use and length of hospital stay were assessed.

Results

There were 159 patients eligible for analysis. The bupivacaine group had significantly less pain than the placebo group (P = 0·016). The timing of bupivacaine administration did not significantly influence pain (preoperative versus postoperative, P = 0·723). There was no difference between groups in the amount of analgesic used. Length of hospital stay was the same in the bupivacaine and placebo groups (P = 0·925) and when bupivacaine was administered at the beginning or end of surgery (P = 0·087).

Conclusion

Bilateral superficial cervical block with bupivacaine combined with general anaesthesia significantly reduced postoperative pain after thyroid surgery. Registration number: NCT00472446 (http://www.clinicaltrials.gov).
Use of baseline factors to predict complications and reinterventions after endovascular repair of abdominal aortic aneurysm
Authors: Brown L C , Greenhalgh R M , Powell J T , Thompson S G
Published: May 2010

Background

It is uncertain which baseline factors are associated with graft-related complications and reinterventions after endovascular aneurysm repair (EVAR) in patients with a large abdominal aortic aneurysm.

Methods

Patients randomized to elective EVAR in EVAR Trial 1 or 2 were followed for serious graft-related complications (type 2 endoleaks excluded) and reinterventions. Cox regression analysis was used to investigate whether any prespecified baseline factors were associated with time to first serious complication or reintervention.

Results

A total of 756 patients who had elective EVAR were followed for a mean of 3·7 years, by which time there were 179 serious graft complications (rate 6·5 per 100 person years) and 114 reinterventions (rate 3·8 per 100 person years). The highest rate was during the first 6 months, with an apparent increase again after 2 years. Multivariable analysis indicated that graft-related complications increased significantly with larger initial aneurysm diameter (P < 0·001) and older age (P = 0·040). There was also evidence that patients with larger common iliac diameters experienced higher complication rates (P = 0·011).

Conclusion

Graft-related complication and reintervention rates were common after EVAR in patients with a large aneurysm. Younger patients and those with aneurysms closer to the 5·5-cm threshold for intervention experienced lower rates.
Expression, purification, and characterization of a recombinant flavin reductase from the luminescent marine bacterium Photobacterium leiognathi
Authors: Crowley Thomas E.
Published: May 2010

In Photobacterium, the flavin reductase encoded by luxG regenerates the reduced form of flavin mononucleotide (FMN). Reduced FMN is one of the substrates of the luciferase enzyme that catalyzes a light‐emitting reaction. A set of experiments, that employs a luxG‐expression plasmid construct (pGhis) and is suitable for an undergraduate laboratory course, is presented. Hexahistidine‐tagged protein is expressed in E. coli from pGhis, with the T7 RNA polymerase/lac repressor induction system. Bacteria are lysed by sonication and the tag allows for purification by immobilized metal ion affinity chromatography. A gel filtration column is used to remove ions and the other small molecules. The Bradford assay, with multiwell plates and an automated plate reader, is used to identify protein concentration peaks from both columns. The concentration of purified enzyme is then calculated from its A280 using the predicted extinction coefficient. Yield and purity are further assayed with SDS‐PAGE. Activity of purified enzyme is measured with riboflavin or FMN as substrate. Reaction rate is quantified by monitoring decrease in A340 as the redox partner, NADH, is oxidized.
Mitochondrion
Authors: Goodsell David S.
Published: May 2010

Diverse biological data may be used to create illustrations of molecules in their cellular context. I describe the scientific results that support a recent textbook illustration of a mitochondrion. The image magnifies a portion of the mitochondrion by one million times, showing the location and form of membranes and individual macromolecules, revealing the molecular basis of its role in energy metabolism and apoptosis. Results from biochemistry, electron microscopy, and X‐ray crystallography were used to create the image.
Solanapyrone Synthase, a Possible Diels–Alderase and Iterative Type I Polyketide Synthase Encoded in a Biosynthetic Gene Cluster from Alternaria solani
Authors: Kasahara Ken , Miyamoto Takanori , Fujimoto Takashi , Oguri Hiroki , Tokiwano Tetsuo , Oikawa Hideaki , Ebizuka Yutaka , Fujii Isao
Published: May 2010

The solanapyrone biosynthetic gene cluster was cloned from Alternaria solani. It consists of six genes—sol1–6—coding for a polyketide synthase, an O‐methyltransferase, a dehydrogenase, a transcription factor, a flavin‐dependent oxidase, and cytochrome P450. The prosolanapyrone synthase (PSS) encoded by sol1 was expressed in Aspergillus oryzae and its product was identified as desmethylprosolanapyrone I (8). Although PSS is closely related to the PKSs/Diels–Alderases LovB and MlcA of lovastatin and compactin biosynthesis, it did not catalyze cycloaddition. Sol5, encoding a flavin‐dependent oxidase (solanapyrone synthase, SPS), was expressed in Pichia pastoris and purified. The purified recombinant SPS showed activity for the formation of (−)‐solanapyrone A (1) from achiral prosolanapyrone II (2), establishing that this single enzyme catalyzes both the oxidation and the subsequent cycloaddition reaction, possibly as a Diels–Alder enzyme.
Pseudo‐Isomerism by Different Jahn—Teller Ordering: Crystal Structures of the Hemihydrate and the Monohydrate of (pyH)[MnF(H2PO4)(HPO4)].
Authors: Stief Ronald , Massa Werner
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
Germanium(IV) Chloride at 193 K.
Authors: Merz Klaus , Driess Matthias
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
Magnetic Resonance Study of a Series of Phosphorus‐Containing Zintl Compounds: Ca14AlP11, Ca14MnP11, and Eu14MnP11.
Authors: Ratai Eva , Bruins Paul , Hernandez Carlos J. , Kauzlarich Susan M. , Augustine Matthew P.
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
Synthesis and Characterization of the Anionic Conductor System La2Mo2O9‐0.5xFx (x = 0.02—0.30).
Authors: Arulraj A. , Goutenoire F. , Tabellout M. , Bohnke O. , Lacorre P.
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
Cs2[PdCl4] — New Results on a “Wellknown” Compound.
Authors: Schuepp Barbara , Schroeder Liane , Schulte Helga , Baehtz Carsten , Mattern Norbert , Keller Hans‐Lothar
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
Pressure‐Induced Phase Transition in PrAlO3.
Authors: Kennedy Brendan J. , Vogt Thomas , Martin C. David , Parise John B. , Hriljac Joseph A.
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
Crystal Chemistry and Thermal Behavior of Anhydrous Phosphates. Part 32. New Orthophosphates of Divalent Chromium — Mg3Cr3(PO4)4, Mg3.75Cr2.25(PO4)4, Ca3Cr3(PO4)4, and Ca2.00Cr4.00(PO4)4.
Authors: Maass K. , Glaum R. , Gruehn R.
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
Polyoxomolybdenum(V) Sulfite Complexes: Synthesis, Structural, and Physical Studies.
Authors: Manos Manolis J. , Woollins J. Derek , Slawin Alexandra M. Z. , Kabanos Themistoklis A.
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
Electrochemical Oxidation of N‐p‐Toluenesulfinamides.
Authors: D'Oca Marcelo G. Montes , Russowsky Dennis , Canto Karen , Gressler Tanara , Goncalves Reinaldo S.
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
Asymmetric C—C Bond Formation by the Mixed Oxidative Coupling of 1,1′‐Bi‐2‐naphthyl Esters.
Authors: Csaky Aurelio G. , Mula M. Belen , Mba Myriam , Plumet Joaquin
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
Synthesis of Functionalized Indole‐ and Benzo‐Fused Heterocyclic Derivatives Through Anionic Benzyne Cyclization.
Authors: Barluenga Jose , Fananas Francisco J. , Sanz Roberto , Fernandez Yolanda
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
Broensted Acid‐Catalyzed Intramolecular Hydroamination of Protected Alkenylamines. Synthesis of Pyrrolidines and Piperidines.
Authors: Schlummer Bjoern , Hartwig John F.
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
Nickel‐Catalyzed Cyclizations and Couplings with Vinylzirconium Reagents.
Authors: Ni Yike , Amarasinghe Kande K. D. , Montgomery John
Published: May 2010

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New C6 Functionalized Acetylenic Synthetic Tool.
Authors: Michaud Sabine , Wavrin Laurence , Viala Jacques
Published: May 2010

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A One‐Pot Access to Cyclopropanes from Allylic Ethers via Hydrozirconation—Deoxygenative Ring Formation.
Authors: Gandon Vincent , Szymoniak Jan
Published: May 2010

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Asymmetric Synthesis of 1,2‐Diaryl‐2‐amino Ethanols.
Authors: Vicario Jose L. , Badia Dolores , Carrillo Luisa , Anakabe Eneritz
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
Expeditious Synthesis of Tri‐Substituted Cyclopentane Derivatives.
Authors: Desai Ranjit C. , Cicala Peter , Meurer Laura C. , Finke Paul E.
Published: May 2010

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Chiral Fluoro Ketones for Catalytic Asymmetric Epoxidation of Alkenes with Oxone.
Authors: Denmark Scott E. , Matsuhashi Hayao
Published: May 2010

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Synthesis and Resolution of BICOL, a Carbazole Analogue of BINOL.
Authors: Botman Peter N. M. , Postma Martijn , Fraanje Jan , Goubitz Kees , Schenk Henk , van Maarseveen Jan H. , Hiemstra Henk
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
RhSCl5 — A Hexameric, Molecular Rhodium(III) Complex with SCl2 Ligands.
Authors: Herzog Frank , Thiele Gerhard
Published: May 2010

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Structure of Dy13Zn57 a Binary Quasicrystal Approximant.
Authors: Gomez Cesar Pay , Lidin Seven
Published: May 2010

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Stability and Volatility of Group 8 Tetroxides MO4 (M: Ruthenium, Osmium, and Hassium (Z = 108)).
Authors: Duellmann Christoph E. , Eichler Bernd , Eichler Robert , Gaeggeler Heinz W. , Tuerler Andreas
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
Multianvil Synthesis, X‐Ray Powder Diffraction Analysis, 31P‐MAS‐NMR, and FTIR Spectroscopy as well as Material Properties of γ‐P3N5, a High‐Pressure Polymorph of Binary Phosphorus(V) Nitride, Built‐Up from Distorted PN5 Square Pyramids and PN4 Tetrahedra.
Authors: Landskron Kai , Huppertz Hubert , Senker Juergen , Schnick Wolfgang
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
Magnesium Amide Base‐Mediated Enantioselective Deprotonation Processes.
Authors: Henderson Kenneth W. , Kerr William J. , Moir Jennifer H.
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
BINOL‐Catalyzed Highly Enantioselective Terminal Alkyne Additions to Aromatic Aldehydes.
Authors: Moore David , Pu Lin
Published: May 2010

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Dibenzothiophene‐bis(oxazolines): New Sulfur‐Containing Ligands Tested in Asymmetric Palladium‐Catalyzed Allylic Substitutions.
Authors: Voituriez Arnaud , Fiaud Jean‐Claude , Schulz Emmanuelle
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
Practical Syntheses of N‐Substituted 3‐Hydroxyazetidines and 4‐Hydroxypiperidines by Hydroxylation with Sphingomonas sp. HXN‐200.
Authors: Chang Dongliang , Feiten Hans‐Juergen , Engesser Karl‐H. , van Beilen Jan B. , Witholt Bernard , Li Zhi
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
TMS Triflate Catalyzed Cleavage of Prenyl (3‐Methylbut‐2‐enyl) Ester.
Authors: Nishizawa Mugio , Yamamoto Hirofumi , Seo Ken , Imagawa Hiroshi , Sugihara Takumichi
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
Sulfur Ylides. Part 10. Modified Method for the Synthesis of Pyrrolizine‐ and Indolizinediones.
Authors: Lakeev S. N. , Mullagalin I. Z. , Maidanova I. O. , Galin F. Z. , Tolstikov G. A.
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
Synthesis of Bis(substituted benzylidene)cycloalkanone Using Supported Reagents and Microwave Irradiation.
Authors: Wang Jin‐Xian , Kang Liqin , Hu Yulai , Wei Bangguo
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
Catalytic Oxidation of Alcohols with Allyl Diethyl Phosphate and Palladium Acetate.
Authors: Shvo Youval , Goldman‐Lev Vered
Published: May 2010

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Reduction of Diaryl Alkenes by Hypophosphorous Acid—Iodine in Acetic Acid.
Authors: Fry Albert J. , Allukian Myron , Williams Allison D.
Published: May 2010

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Hydrogenation on Granular Palladium‐Containing Catalysts. Part 1. Hydrogenation of Tertiary Acetylene Alcohols.
Authors: Tolkacheva L. N. , Kislyi V. P. , Taits S. Z. , Semenov V. V.
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
Recognition and Catalysis in Allylic Alkylations.
Authors: Gibson Christoph , Rebek Jr. Julius
Published: May 2010

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Selective Deprotection of Either Alkyl or Aryl Silyl Ethers from Aryl, Alkyl Bis‐silyl Ethers.
Authors: Ankala Sudha V. , Fenteany Gabriel
Published: May 2010

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A Synthesis of Trisubstituted Alkenes by a Ru‐Catalyzed Addition.
Authors: Trost Barry M. , Shen Hong C. , Pinkerton Anthony B.
Published: May 2010

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An Efficient Approach to Bridged‐Bicyclic Rings via Intramolecular Diazo Ketone Insertion.
Authors: Chen Lei , Zhang Xuqing , Schultz Arthur
Published: May 2010

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A New Strategy for the Construction of Polycycles Bearing a Nitrogen Atom on the Ring Fusion.
Authors: Deleens Reynald , Gautier Arnaud , Piettre Serge R.
Published: May 2010

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Asymmetric Hydroformylation of Styrene Catalyzed by Carbohydrate Diphosphite‐Rh(I) Complexes.
Authors: Dieguez Montserrat , Pamies Oscar , Ruiz Aurora , Claver Carmen
Published: May 2010

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Synthesis of 2,3‐Dideuterioesters from 2‐Halo‐3‐hydroxyesters by Using Metallic Samarium and Diiodomethane.
Authors: Concellon Jose M. , Huerta Monica
Published: May 2010

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Study of the Stability of Carbocations by Chlorosulfonyl Isocyanate Reaction with Ethers.
Authors: Kim Ji Duck , Han Gyoonhee , Jeong Lak Shin , Park Hyun‐Ju , Zee Ok Pyo , Jung Young Hoon
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
Asymmetric Carbon—Carbon Coupling of Phenols or Anilines with Aryllead Triacetates
Authors: Kano Taichi , Ohyabu Yuki , Saito Susumu , Yamamoto Hisashi
Published: May 2010

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Stereoselective Aldol Condensation of Boron Enolates to trans α,β‐Epoxy Aldehydes.
Authors: Righi Giuliana , Spirito Francesca , Bonini Carlo
Published: May 2010

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Synthesis of Spirocyclic β‐Methylene‐γ‐lactone Utilizing Hydroxymethylation of Functionalized Allylsilane.
Authors: Kuroda Chiaki , Kasahara Takahiro , Akiyama Kouki , Amemiya Takuma , Kunishima Takashi , Kimura Yoshihiro
Published: May 2010

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Catalytic Asymmetric C—H Activation by Methyl Thiophen‐3‐yldiazoacetate Applied to the Synthesis of (+)‐Cetiedil.
Authors: Davies Huw M. L. , Walji Abbas M. , Townsend Robert J.
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
Uncatalyzed Addition of N‐(tert‐Butoxycarbonyl)‐2‐tert‐butyldimethylsilyloxypyrrole to Activated Quinones.
Authors: Brimble Margaret A. , Halim Rosliana , Petersson Maria
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
Synthesis of O‐Protected Mandelamide and Its Elaboration to 5‐Hydroxy‐1,5‐diphenylhydantoin.
Authors: Papakyprianou A. , Parkins A. W. , Prince P. D. , Steed J. W.
Published: May 2010

For Abstract see ChemInform Abstract in Full Text.
Synthesis and Properties of N‐Substituted Saccharin Derivatives.
Authors: Soubh L. , Besch A. , Otto H.‐H.
Published: May 2010

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Synthesis of 2‐(Imidazolylamino)benzothiazoles.
Authors: El'tsov O. S. , Mokrushin V. S.
Published: May 2010

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Synthesis of 1,2,4‐Triazolium 4N‐Nitroimides by the Nitration of 1‐Substituted 4‐Amino‐1,2,4‐triazolium Nitrates.
Authors: Shitov O. P. , Korolev V. L. , Tartakovsky V. A.
Published: May 2010

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Synthesis of Fused Heterocyclic Ring Systems Related to 6‐Amino‐1,4‐dihydro‐3‐methyl‐1‐phenyl‐4‐thioxothiopyrano [4,3‐c]pyrazole‐7‐carbonitrile.
Authors: Kandeel Maymona M. , Ahmed Ragaa A. , Youssef Mohamed Salah K.
Published: May 2010

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Synthesis of cis‐Fused Hexahydro‐4aH‐indeno[1,2‐b]pyridines via Intramolecular Ritter Reaction and Their Conversion into Tricyclic Analogues of NK‐1 and Dopamine Receptor Ligands.
Authors: Van Emelen Kristof , De Wit Tom , Hoornaert Georges J. , Compernolle Frans
Published: May 2010

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New Mechanistic Aspects on the Catalytic Transformation of Vinylthiiranes to Mono and Disubstituted 3,6‐Dihydro‐1,2‐dithiins by Tungsten Pentacarbonyl Monoacetonitrile.
Authors: Lupton David W. , Taylor Dennis K.
Published: May 2010

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Preparation of Enantiopure Sultams by Intramolecular Diels—Alder Reaction of Furan‐Containing Vinylsulfonamides.
Authors: Rogatchov Viktor O. , Bernsmann Heiko , Schwab Pia , Froehlich Roland , Wibbeling Birgit , Metz Peter
Published: May 2010

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Synthesis of Novel Chiral Macrolides and Their Antifungal Activity.
Authors: Gao Ming Zhang , Gao Jian , Xu Zun Le , Zingaro Ralph A.
Published: May 2010

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Reactions of Dibenzylphosphine Oxide with α,β‐Unsaturated Nitriles: Synthesis of Aminophospholene Oxides.
Authors: Kolesnik V. D. , Tkachev A. V.
Published: May 2010

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Synthesis and Properties of 2‐(Diorganylphosphorylhydroxymethyl)‐1‐organylimidazoles.
Authors: Gusarova N. K. , Arbuzova S. N. , Reutskaya A. M. , Ivanova N. I. , Baikalova L. V. , Sinegovskaya L. M. , Chipanina N. N. , Afonin A. V. , Zyryanova I. A.
Published: May 2010

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A Novel Method for the Synthesis of 2,5‐Diarylselenophenes.
Authors: Arsenyan Pavel , Pudova Olga , Lukevics Edmunds
Published: May 2010

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Stereoselective Hydrostannation of Substituted Alkynes with Trineophyltin Hydride.
Authors: Dodero Veronica I. , Koll Liliana C. , Mandolesi Sandra D. , Podesta Julio C.
Published: May 2010

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Synthesis of Carbasugars from Nucleophilic Addition—Ring Closure (NARC)—Derived Cycloalkenes.
Authors: Perlmutter Patrick , Rose Mark
Published: May 2010

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Norditerpenoid Alkaloids from the Roots of Aconitum leave Royle
Authors: Ulubelen A. , Mericli A. H. , Mericli F. , Kolak U. , Arfan M. , Ahmad M. , Ahmad H.
Published: May 2010

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A New Tetracyclic Phenol and Other Constituents from the Roots of Bauhinia racemosa.
Authors: Jain Renuka , Alam Shahla , Saxena Umesh
Published: May 2010

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Total Synthesis of (.+‐.)‐Otteliones A and B.
Authors: Mehta Goverdhan , Islam Kabirul
Published: May 2010

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Applications of Chiral Sulfoxides in Enantioselective Synthesis of Diols and Total Synthesis of Natural Products.
Authors: Solladie Guy
Published: May 2010

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Mg15Ir5Si2, a Magnesium Iridium Silicide with Isolated Ir5Si2 Building Groups.
Authors: Lorenz Peter , Schoolaert Stephan , Jung Walter
Published: May 2010

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Hydrogen Bonds in the Monoammoniates of Potassium and Cesium Amide.
Authors: Peters Dieter , Tenten Andreas , Jacobs Herbert
Published: May 2010

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Intergrowth Phases of Tetragonal Rare Earth Boride Carbides.
Authors: Oeckler Oliver , Duppel Viola , Bauer Josef , Mattausch Hansjuergen , Simon Arndt
Published: May 2010

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[Ag(NH3)2]ClO4: Crystal Structures, Phase Transition, and Vibrational Spectra.
Authors: Nockemann Peter , Meyer Gerd
Published: May 2010

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Thermal Decomposition and Solution Calorimetry of Ammonium Samarium Bromides.
Authors: Oppermann H. , Hennig C.
Published: May 2010

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A New Synthetic Route for Preparing LiFePO4 with Enhanced Electrochemical Performance.
Authors: Prosini Pier Paolo , Carewska Maria , Scaccia Silvera , Wisniewski Pawel , Passerini Stefano , Pasquali Mauro
Published: May 2010

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Conversion of Aurivillius Phases Bi2ANaNb3O12 (A: Sr or Ca) into the Protonated Forms of Layered Perovskite via Acid Treatment.
Authors: Sugimoto Wataru , Shirata Masashi , Kuroda Kazuyuki , Sugahara Yoshiyuki
Published: May 2010

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The Structure of Twinned Ag4Mn3O8, a Novel Octahedral Framework with a Topology Related to the Archetype Cubic {10,3} Net.
Authors: Ahlert S. , Friese K. , Jansen M.
Published: May 2010

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Synthesis and Structure of a Tetragonal Fluoroperovskite Variant with Cation Deficiency — Cs4PdMn2F12.
Authors: Fischer R. , Mueller B. G.
Published: May 2010

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Asymmetric Construction of Quaternary Centers by Enantioselective Allylation: Application to the Synthesis of the Serotonin Antagonist LY426965.
Authors: Denmark Scott E. , Fu Jiping
Published: May 2010

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Diastereoselective Silacyclopropanations of Functionalized Chiral Alkenes.
Authors: Driver Tom G. , Franz Annaliese K. , Woerpel K. A.
Published: May 2010

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Remarkable Dependence of Diastereoselectivity on Anhydrous or Aqueous Solvent in the Indium Hydride Promoted Reductive Aldol Reaction of α,β‐Unsaturated Ketones.
Authors: Inoue Katsuyuki , Ishida Tatsuya , Shibata Ikuya , Baba Akio
Published: May 2010

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Optimization of Catalyst Enantioselectivity and Activity Using Achiral and Meso Ligands.
Authors: Costa Anna M. , Jimeno Ciril , Gavenonis Jason , Carroll Patrick J. , Walsh Patrick J.
Published: May 2010

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Stereoselective Formation of Quaternary Carbon Centers: Alkylation of α,α‐Disubstituted Amide Enolates.
Authors: Manthorpe Jeffrey M. , Gleason James L.
Published: May 2010

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The First General Method for Z‐Selective Olefination of Acylsilanes via Ynolate Anions Providing Multisubstituted Alkenes.
Authors: Shindo Mitsuru , Matsumoto Kenji , Mori Seiji , Shishido Kozo
Published: May 2010

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Isothiazoles. Part 13. Synthesis of Sulfamic Esters, [1,2]Thiazete S,S‐Dioxides, Benzo[e][1,2]thiazine S,S‐Dioxides or Triazoles by Reaction of Isothiazole Dioxides with Sodium Azide.
Authors: Clerici Francesca , Gelmi Maria Luisa , Soave Raffaella , Lo Presti Leonardo
Published: May 2010

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A One‐Pot Synthesis of β‐Chloro Acetates/Benzoates from Epoxides.
Authors: Chandra Kusum L. , Bisai Alakesh , Saravanan P. , Singh Vinod K.
Published: May 2010

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Selective Oxidation of Alkylarenes in Dry Media with Potassium Permanganate Supported on Montmorillonite K10.
Authors: Shaabani Ahmad , Bazgir Ayoob , Teimouri Fatemeh , Lee Donald G.
Published: May 2010

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ROMPgel‐Supported Triphenylphosphine with Potential Application in Parallel Synthesis.
Authors: Aarstad Erik , Barrett Anthony G. M. , Hopkins Brian T. , Koebberling Johannes
Published: May 2010

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Cobalt‐Catalyzed Heck‐Type Reaction of Alkyl Halides with Styrenes.
Authors: Ikeda Yousuke , Nakamura Tomoaki , Yorimitsu Hideki , Oshima Koichiro
Published: May 2010

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Syntheses of Pentafulvenes from 4‐Alkylidenecyclopentenones.
Authors: Antras Frederic , Ahmar Mohammed , Cazes Bernard
Published: May 2010

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Towards the Rehabilitation of the Mathews′ “Dry” Hydrolysis Reaction Using Microwave Technology.
Authors: Chemat Farid
Published: May 2010

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Platinum Catalysts for Suzuki Biaryl Coupling Reactions.
Authors: Bedford Robin B. , Hazelwood Samantha L. , Albisson David A.
Published: May 2010

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Fabrication of Hollow Palladium Spheres and Their Successful Application to the Recyclable Heterogeneous Catalyst for Suzuki Coupling Reactions.
Authors: Kim Sang‐Wook , Kim Minsuk , Lee Wha Young , Hyeon Taeghwan
Published: May 2010

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Diastereocontrolled Synthesis of trans‐ and cis‐meso‐Cyclopentene Aziridines.
Authors: Caine Darren , O'Brien Peter , Rosser Clare M.
Published: May 2010

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Synthesis of a New α‐Methylene‐γ‐butyrolactone Skeleton with the Use of Cobaloxime as Catalyst.
Authors: Tabatabaian K. , Mamagkhani M. , Navai‐Dyva T.
Published: May 2010

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Design, Synthesis, and Evaluation of Postulated Transient Intermediate and Substrate Analogues as Inhibitors of 4‐Hydroxyphenylpyruvate Dioxygenase.
Authors: Lin Yun‐Loung , Huang Jian‐Lin , Wu Chung‐Shieh , Liu Hung‐Ge , Yang Ding‐Yah
Published: May 2010

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Studies on Sulfoxide Rearrangement: Synthesis of Dimedone‐Anellated Heterocycles.
Authors: Majumdar K. C. , Samanta S. K.
Published: May 2010

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Chemoselective Michael Reactions on Pyroglutamates. Expeditious Synthesis of Spiro‐bis‐γ‐lactams as β‐Turn Peptidomimetics.
Authors: Brana Miguel F. , Garranzo Maria , de Pascual‐Teresa Beatriz , Perez‐Castells Javier , Torres Maria Rosario
Published: May 2010

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A Simple and Efficient Asymmetric Synthesis of 3‐Alkyl‐isoindolin‐1‐ones.
Authors: Perard‐Viret Joelle , Prange Thierry , Tomas Alain , Royer Jacques
Published: May 2010

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Highly Diastereoselective Condensation of α‐Nitro‐esters with Aldehydes Catalyzed by Zinc Complexes of Amino Acids.
Authors: Chatterjee A. , Jha S. C. , Joshi N. N.
Published: May 2010

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Synthesis of 6‐Aroyl‐3,3,5,5‐tetramethyl‐2,3,5,6‐tetrahydropyran‐2,4‐diones and Their Reaction with Phenylhydrazine.
Authors: Shchepin V. V. , Korzun A. E. , Nedugov A. N. , Sazhneva Yu. Kh. , Shurov S. N.
Published: May 2010

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A Convenient Synthesis of Psoralens.
Authors: Chimichi Stefano , Boccalini Marco , Cosimelli Barbara , Viola Giampietro , Vedaldi Daniela , Dall'Acqua Francesco
Published: May 2010

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Synthesis of New Derivatives of 4‐Quinolinecarboxylic Acid.
Authors: Shvekhgeimer M.‐G. A. , Kondrashova N. N.
Published: May 2010

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Indium(III) Bromide‐Catalyzed Preparation of Dihydropyrimidinones: Improved Protocol Conditions for the Biginelli Reactions.
Authors: Fu Nan‐Yan , Yuan Yao‐Feng , Cao Zhong , Wang Shan‐Wei , Wang Ji‐Tao , Peppe Clovis
Published: May 2010

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New Aspects on the Selective Synthesis of 7‐Arylpyrido[2,3‐d]pyrimidines.
Authors: Quiroga Jairo , Insuasty Henry , Insuasty Braulio , Abonia Rodrigo , Cobo Justo , Sanchez Adolfo , Nogueras Manuel
Published: May 2010

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Some Reactions with Quinoxaline‐2,3‐dicarboxylic Acid Anhydride. Synthesis of Quinazolinoquinoxalines and Quinazolino[2,3:6,1]pyridazino[4,5‐b]quinoxalines.
Authors: Zahran Medhat A.
Published: May 2010

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Adamantylation of 3‐Nitro‐ and 3‐Ethoxycarbonyl‐1,2,4‐triazolo[5,1‐c]‐1,2,4‐triazin‐4‐ones.
Authors: Ulomskii E. N. , Deev S. L. , Tkachev A. V. , Moiseev I. K. , Rusinov V. L.
Published: May 2010

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Reaction of 1‐Trimethylsilyl‐3‐chloro‐1‐propyne with α‐Nitroacetophenone.
Authors: Yurchenko O. I. , Dybova T. N. , Gritsai N. V. , Buikliskii V. D. , Mel'nikova E. D.
Published: May 2010

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Intramolecular P=S and P=N Alkylation. General Method for Synthesizing 1,2‐Heteraphosphacyclanes.
Authors: Aladzheva I. M. , Bykhovskaya O. V. , Lobanov D. I. , Petrovskii P. V. , Lysenko K. A. , Mastryukova T. A.
Published: May 2010

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Migration of the O‐Acetyl Group in the Acetonation of Guaianolide Rhaposerin.
Authors: Berdin A. G. , Raldugin V. A. , Shakirov M. M. , Druganov A. G. , Bagryanskaya I. Yu. , Gatilov Yu. V. , Kulyyasov A. T. , Adekenov S. M. , Tolstikov G. A.
Published: May 2010

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3β‐Methoxyolean‐18‐ene (Miliacin) from the Marine Fungus Chaetomium olivaceum.
Authors: Smetanina O. F. , Kuznetzova T. A. , Denisenko V. A. , Pivkin M. V. , Khudyakova Yu. V. , Gerasimenko A. V. , Popov D. Yu. , Il'in S. G. , Elyakov G. B.
Published: May 2010

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Improved Synthesis and Molecular Modeling of 4β,19‐Dihydroxyandrost‐5‐en‐17‐one, an Excellent Inhibitor of Aromatase.
Authors: Numazawa Mitsuteru , Yamada Keiko , Watari Yoko , Ando Momoko
Published: May 2010

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A Multi‐Gram Synthesis of 1,2:5,6‐Di‐O‐isopropylidene‐3‐C‐trimethylsilylmethyl‐α‐D‐allofuran ose. An Improved Preparation of 3‐C‐Hydroxymethyl‐α‐D‐gluco‐ and 3‐C‐Methyl‐α‐D‐allofuranose Derivatives.
Authors: Funabashi Masuo , Ooshiro Yukinori
Published: May 2010

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Synthesis of Oxa‐aza Spirobicycles by Intramolecular Hydrogen Abstraction Promoted by N‐Radicals in Carbohydrate Systems.
Authors: Freire Raimundo , Martin Angeles , Perez‐Martin Ines , Suarez Ernesto
Published: May 2010

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Novel α‐Glucosidase Inhibitors, CKD‐711 and CKD‐711a Produced by Streptomyces sp. CK‐4416. Part 3. Physico‐chemical Properties and Structure Elucidation.
Authors: Han Kyou‐Hoon , et al. et al.
Published: May 2010

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A Concise and Convergent Route to 5,8‐Disubstituted Indolizidine and 1,4‐Disubstituted Quinolizidine Ring Cores by Diastereoselective Aza‐Diels—Alder Reaction.
Authors: Barluenga Jose , Mateos Carlos , Aznar Fernando , Valdes Carlos
Published: May 2010

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Acetogenic Isoquinoline Alkaloids. Part 150. Dioncophylline E from Dioncophyllum thollonii, the First 7,3′‐Coupled Dioncophyllaceous Naphthylisoquinoline Alkaloid.
Authors: Bringmann Gerhard , Messer Kim , Wolf Kristina , Muehlbacher Joerg , Gruene Matthias , Brun Reto , Louis Adriaan M.
Published: May 2010

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Synthesis of Dibromophakellstatin and Dibromoisophakellin.
Authors: Wiese Kevin J. , Yakushijin Kenichi , Horne David A.
Published: May 2010

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Hericenols A—D and a Chromanone from Submerged Cultures of a Stereum Species.
Authors: Omolo Josiah Ouma , Anke Heidrun , Sterner Olov
Published: May 2010

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Syntheses of E‐ and Z‐2‐ and 4‐Fluorourocanic Acids.
Authors: Fan Junfa , Dolensky Bohumil , Kim In Ho , Kirk Kenneth L.
Published: May 2010

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Bismuth Selective Antimony(III) Silicate Inorganic Ion‐Exchanger.
Authors: Reetha C. , Aravindakshan K. K. , Janardanan C.
Published: May 2010

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