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Synthetic Approach (synthetic + approach)

Distribution by Scientific Domains
Chemistry77%
Polymers and Materials Science12%
Life Sciences4%
Humanities and Social Sciences2%
2 Other Domains5%
Distribution within Chemistry
Organic Chemistry71%
General & Introductory Chemistry16%
6 Other Subdomains13%

Kinds of Synthetic Approach

  • modular synthetic approach
    		•
  • new synthetic approach
    		•
  • novel synthetic approach
    		•

    Selected Abstracts

    NUTRIENT LOADING ASSESSMENT IN THE ILLINOIS RIVER USING A SYNTHETIC APPROACH,

    JOURNAL OF THE AMERICAN WATER RESOURCES ASSOCIATION, Issue 4 2003
    Baxter E. Vieux
    ABSTRACT: A synthetic relationship is developed between nutrient concentrations and discharge rates at two river gauging sites in the Illinois River Basin. Analysis is performed on data collected by the U.S. Geological Survey (USGS) on nutrients in 1990 through 1997 and 1999 and on discharge rates in 1988 through 1997 and 1999. The Illinois River Basin is in western Arkansas and northeastern Oklahoma and is designated as an Oklahoma Scenic River. Consistently high nutrient concentrations in the river and receiving water bodies conflict with recreational water use, leading to intense stakeholder debate on how best to manage water quality. Results show that the majority of annual phosphorus (P) loading is transported by direct runoff, with high concentrations transported by high discharge rates and low concentrations by low discharge rates. A synthetic relationship is derived and used to generate daily phosphorus concentrations, laying the foundation for analysis of annual loading and evaluation of alternative management practices. Total nitrogen (N) concentration does not have as clear a relationship with discharge. Using a simple regression relationship, annual P loadings are estimated as having a root mean squared error (RMSE) of 39.8 t/yr and 31.9 t/yr and mean absolute percentage errors of 19 percent and 28 percent at Watts and Tahlequah, respectively. P is the limiting nutrient over the full range of discharges. Given that the majority of P is derived from Arkansas, management practices that control P would have the most benefit if applied on the Arkansas side of the border. [source]

    [Re6Q7O(3,5-Me2PzH)6]Br2·3,5-Me2PzH (Q = S, Se) , New Octahedral Rhenium Cluster Complexes with Organic Ligands: Original Synthetic Approach and Unexpected Ligand Exchange in the Cluster Core

    EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, Issue 4 2005
    Yuri V. Mironov
    Abstract Two new octahedral rhenium cluster complexes, [Re6S7O(3,5-Me2PzH)6]Br2·3,5-Me2PzH (1) and [Re6Se7O(3,5-Me2PzH)6]Br2·3,5-Me2PzH (2), with the organic ligand 3,5-dimethylpyrazole (3,5-Me2PzH), have been synthesised by reaction of rhenium chalcobromides Cs3[Re6(µ3 -Q7Br)Br6] (Q = S, Se) with molten dimethylpyrazole. During the reaction, all six apical bromine ligands of the cluster complexes are substituted by the organic ligand, which is coordinated through the aromatic nitrogen atom N2. Additionally, the inner ligand µ3 -Br in the cluster core [Re6(µ3 -Q7Br)]3+ is substituted by oxygen, giving cluster cores [Re6(µ3 -Q7O)]2+ with mixed chalcogen/oxygen ligands. Compounds 1 and 2 have been characterised by single-crystal X-ray diffraction analysis. They are isostructural and crystallise with four formula units in the unit cell. Absorption spectra and luminescence characteristics of these two cluster compounds have been investigated in methanol. Absorption starts below 400 nm. For both compounds, broad emissions were found. The fluorescence decays of the two compounds follow a diexponential decay behaviour. The main fluorescence intensity decays have longer fluorescence lifetimes of 3.07 ± 0.03 (1) and 3.96 ± 0.02 µs (2). Studying the thermal stability of both compounds in vacuo showed that the release of 3,5-dimethylpyrazole ligands begins near 200 °C, and decomposition, with the removal of 7 molecules of 3,5-Me2PzH, is complete at 330 °C. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005) [source]

    Cyclic Allyl Carbamates in Stereoselective syn SE, Processes: Synthetic Approach to Sarcodictyins and Eleutherobin

    EUROPEAN JOURNAL OF ORGANIC CHEMISTRY, Issue 31 2007
    Sylvie Dhulut
    Abstract Our synthetic approach of marine diterpenoids sarcodictyins A and B and eleutherobin relies on the one-step attachment of a C5,C9 side chain at the C10 position. The C1,C10 cis -disubstituted cyclohexene derivative is obtained in 86,% yield with total stereoselectivity. The reaction is based on a syn SE, process involving a cyclic (Z)-allyl diisopropylcarbamate. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007) [source]

    Magnetic Janus Particles Prepared by a Flame Synthetic Approach: Synthesis, Characterizations and Properties

    ADVANCED MATERIALS, Issue 2 2009
    Nan Zhao
    Spherical Janus particles consisting of ,-Fe2O3 and SiO2 bicompartments are effectively prepared through a flame synthetic route. The excellent colloidal stability of these particles offers versatile choices for further manipulating them to form different types of assembled structures. As an example, the synthesis of hollow capsules with a magnetic core and a soft Au/PVP-film shell is demosntrated. [source]

    New Synthetic Approach to a [1.1.6] Metapara Cyclophane Derivative via Suzuki,Miyaura Cross-Coupling and Ring-Closing Metathesis,

    ADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 9 2005
    Sambasivarao Kotha
    Abstract The synthesis of a [1.1.6] metapara cyclophane derivative, 1,5(1,4),3(1,3)-tribenzenacycloundecaphan-8-ene-6,11-dione, has been achieved via the Suzuki,Miyaura cross-coupling of ,,,,-dibromo- m -xylene with an arylboronic acid derivative followed by an allylation and ring-closing metathesis reaction sequence. [source]

    A Modular Synthetic Approach to Conjugated Pentacene Di-, Tri-, and Tetramers,

    ANGEWANDTE CHEMIE, Issue 35 2010
    Dan Lehnherr
    Achtung, Bandlücke! Di-, tri- und tetramere Pentacene können aus einem vielfältig einsetzbaren Baustein durch Hay-Homokupplungen und auch durch Cadiot-Chodkiewicz-Kreuzkupplungen synthetisiert werden. Durch diese modulare Herangehensweise können Löslichkeit, Stabilität und HOMO-LUMO-Bandlücke der Verbindungen in Abhängigkeit von ihrer Länge bewertet werden. Im iBu3Si-substituierten Pentacen-Dimer treten weit reichende dreidimensionale ,-Überlappungen auf (siehe Bild; n=2). [source]

    A General Synthetic Approach to Interconnected Nanowire/Nanotube and Nanotube/Nanowire/Nanotube Heterojunctions with Branched Topology,

    ANGEWANDTE CHEMIE, Issue 39 2009
    Guowen Meng Prof.
    Ein kombinatorisches Verfahren macht eine breite Vielfalt von Nanodraht/Nanoröhren(NW/NT)- und Nanoröhren/Nanodraht/Nanoröhren(NT/NW/NT)-Architekturen mit Verzweigungstopologie zugänglich. Die Nanodrähte werden durch Elektroabscheidung in den verzweigten Kanälen anodischer Aluminiumoxidtemplate erzeugt und selektiv geätzt, anschließend werden in den leeren Kanälen Nanoröhren an die Nanodraht-Enden gezüchtet. [source]

    ChemInform Abstract: Asymmetric [2,3]-Wittig Rearrangement of Oxygenated Allyl Benzyl Ethers in the Presence of a Chiral Di-tBu-bis(oxazoline) Ligand: A Novel Synthetic Approach to THF Lignans.

    CHEMINFORM, Issue 5 2010
    Maria Kitamura
    Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

    ChemInform Abstract: New Synthetic Approach for the Construction of Multisubstituted 2-Acyl Furans by the IBX-Mediated Cascade Oxidation/Cyclization of cis-2-En-4-yn-1-ols (IBX = 2-Iodoxybenzoic Acid).

    CHEMINFORM, Issue 9 2009
    Xiangwei Du
    Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

    ChemInform Abstract: New Synthetic Approach to Epoxyisoindolo[2,1-a]quinolines Based on Cycloaddition Reactions of 2-Furyl-Substituted Tetrahydroquinolines with Maleic Anhydride and Acryloyl Chloride.

    CHEMINFORM, Issue 10 2008
    F. I. Zubkov
    Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

    ChemInform Abstract: The First Example of a Diastereoselective Thio-Ugi Reaction: A New Synthetic Approach to Chiral Imidazole Derivatives.

    CHEMINFORM, Issue 8 2008
    Anton V. Gulevich
    Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

    ,-Pentafluoroethylated Amines: A New Synthetic Approach.

    CHEMINFORM, Issue 46 2006
    Martin H. Koenigsmann
    Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source]

    A Novel Synthetic Approach to Fluorine-Containing Acetylenic Compounds Based on Nicholas Reaction.

    CHEMINFORM, Issue 38 2006
    Tsutomu Konno
    Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source]

    A New Synthetic Approach to Pyrrolo[3,4-a]indolizines.

    CHEMINFORM, Issue 22 2006
    Alexander D. Tereshchenko
    Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source]

    Asymmetric Cyclopropanantion of Optically Active Vinyl Sulfoxides: A New Synthetic Approach to Biologically Active Compounds

    CHEMINFORM, Issue 34 2005
    Wanda H. Midura
    Abstract For Abstract see ChemInform Abstract in Full Text. [source]

    Heterocyclic Synthesis with Ethyl ,-(3-Carbamoyl-4,5,6,7-tetrahydrobenzo [b]thiophen-2-ylhydrazono)acetates: An Expeditious Synthetic Approach to Polyfunctionally Substituted Pyran, Pyridine, and Pyridazine Derivatives.

    CHEMINFORM, Issue 40 2004
    Rafat M. Mohareb
    Abstract For Abstract see ChemInform Abstract in Full Text. [source]

    A Novel Synthetic Approach to Benzo[d]isothiazole 1,1-Diones Having a Secondary Alkyl Substituent at the 3-Position.

    CHEMINFORM, Issue 30 2004
    Zhaopeng Liu
    Abstract For Abstract see ChemInform Abstract in Full Text. [source]

    New Synthetic Approach to [1]Benzopyrano[4,3-b]pyridin-5-one Derivatives.

    CHEMINFORM, Issue 30 2004
    Egle M. Beccalli
    Abstract For Abstract see ChemInform Abstract in Full Text. [source]

    New Synthetic Approach to ,-Chlorocinnamates: First Example of Synthesis of Functionally Substituted Alkenes Using Catalytic Olefination Reaction.

    CHEMINFORM, Issue 28 2004
    Valentine G. Nenajdenko
    Abstract For Abstract see ChemInform Abstract in Full Text. [source]

    A Synthetic Approach to Nomofungin/Communesin B.

    CHEMINFORM, Issue 1 2004
    Seth L. Crawley
    Abstract For Abstract see ChemInform Abstract in Full Text. [source]

    Efficient Synthesis of trans- or cis-4(5)-(5-Aminomethyltetrahydrofuran-2-yl)imidazoles via Diazafulvene Intermediates: Synthetic Approach Toward Human Histamine H4 -Ligands.

    CHEMINFORM, Issue 50 2003
    Shinya Harusawa
    Abstract For Abstract see ChemInform Abstract in Full Text. [source]

    A Facile Synthetic Approach to the Core Structure of 6,7-Didehydrocarnosoic Acid Type Derivatives.

    CHEMINFORM, Issue 46 2003
    Andreas Luxenburger
    Abstract For Abstract see ChemInform Abstract in Full Text. [source]

    Olefination of Methyl (1S,2R,4R)-N-Benzoyl-2-formyl-7-azabicyclo[2.2.1]heptane-1-carboxylate, a Synthetic Approach to New Conformationally Constrained Prolines.

    CHEMINFORM, Issue 40 2003
    Ana M. Gil
    Abstract For Abstract see ChemInform Abstract in Full Text. [source]

    Synthetic Approach to Tetrahydrofuran Units and Five-Membered Ring Lactones Fused to Hexopyranosides.

    CHEMINFORM, Issue 3 2003
    Amelia P. Rauter
    Abstract For Abstract see ChemInform Abstract in Full Text. [source]

    A New Synthetic Approach for Novel 4-Substituted-5-nitroimidazoles.

    CHEMINFORM, Issue 38 2002
    Maxime D. Crozet
    Abstract For Abstract see ChemInform Abstract in Full Text. [source]

    ChemInform Abstract: A New Synthetic Approach to N,N,-Disubstituted 1,n-Alkanediamines.

    CHEMINFORM, Issue 35 2001
    Liliana R. Orelli
    Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

    ChemInform Abstract: A Radical Synthetic Approach to the New Potentially Bioactive Pyrimidinones.

    CHEMINFORM, Issue 31 2001
    Serge Djekou
    Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

    ChemInform Abstract: Novel Synthetic Approach to 2-(1,-Hydroxyalkyl)- and 2-Amido-3-hydroxypyridin-4-ones.

    CHEMINFORM, Issue 30 2001
    Sirivipa Piyamongkol
    Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

    ChemInform Abstract: A Practical Synthetic Approach to Chiral ,-Aryl Substituted Ethylphosphonates.

    CHEMINFORM, Issue 27 2001
    Natalia S. Goulioukina
    Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

    ChemInform Abstract: New Synthetic Approach to Azuleno[1,2-c]pyrroles and Conversion to Benz[a]azulenes.

    CHEMINFORM, Issue 26 2001
    Dao-Lin Wang
    Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]