Catalytic Asymmetric (catalytic + asymmetric)

Distribution by Scientific Domains
Chemistry100%
Distribution within Chemistry
Organic Chemistry60%
General & Introductory Chemistry40%

Terms modified by Catalytic Asymmetric

  • catalytic asymmetric addition
  • catalytic asymmetric aldol reaction
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  • catalytic asymmetric alkylation
  • catalytic asymmetric dihydroxylation
    		•
  • catalytic asymmetric hydrogenation
  • catalytic asymmetric mannich-type reaction
    		•
  • catalytic asymmetric synthesis

    • Selected Abstracts

    Entropy-Controlled Catalytic Asymmetric 1,4-Type Friedel,Crafts Reaction of Phenols Using Conformationally Flexible Guanidine/Bisthiourea Organocatalyst,

    ANGEWANDTE CHEMIE, Issue 40 2010
    Dr. Yoshihiro Sohtome
    Soft Skills: Organische Verbindungen mit flexibler Konformation (,weiche" Organokatalysatoren) vermitteln die Titelreaktion. Sie sind in der Lage, Prozesse durch die unterschiedlichen Aktivierungsentropien (,,S,S,R) der reaktiven Intermediate zu steuern, und ergeben hohe Stereoselektivitäten, ohne dass eine Abstimmung der Reaktionstemperaturen erforderlich wäre (siehe Schema). Ar=3,5-(CF3)2C6H3. [source]

    Catalytic Asymmetric 6, Electrocyclization: Enantioselective Synthesis of Functionalized Indolines,

    ANGEWANDTE CHEMIE, Issue 52 2009
    Eleanor
    Wie man einen Ring schließt: Ein neuer Ansatz für die katalytische asymmetrische 6,-Elektrocyclisierung führt zu einem hoch enantioselektiven Prozess, der für die Synthese von chiralen Indolinen genutzt wurde (siehe Schema). Die Behandlung von N -Aryliminen unter Phasentransferbedingungen in Gegenwart von N -Benzylcinchonidiniumchlorid erzeugt ein delokalisiertes 2-Azapentadienyl-Anion, das mit bis zu 99,% Ausbeute und 98,%,ee cyclisiert. [source]

    Catalytic Asymmetric Conjugate Addition of Nitroalkanes to 4-Nitro-5-styrylisoxazoles,

    ANGEWANDTE CHEMIE, Issue 49 2009
    Andrea Baschieri
    Zweimal Nitro: 4-Nitro-5-styrylisoxazole dienten als maskierte ,,,-ungesättigte Carbonsäuren in der katalytischen asymmetrischen Titelreaktion. Der 4-Nitroisoxazolkern aktiviert das konjugierte Alken und eine latente Carboxylatfunktion. Die Reaktion läuft mit 5,Mol-% eines einfach zugänglichen Phasentransferkatalysators bei Raumtemperatur mit bemerkenswerter Diastereo- und Enantioselektivität ab (siehe Schema). [source]

    ChemInform Abstract: Catalytic Asymmetric 1,3-Dipolar Cycloaddition of ,-Iminonitriles.

    CHEMINFORM, Issue 38 2010
    Rocio Robles-Machin
    Abstract The catalytic asymmetric 1,3-cycloaddition of ,-iminonitriles is developed. [source]

    ChemInform Abstract: Catalytic Asymmetric 6, Electrocyclization: Enantioselective Synthesis of Functionalized Indolines.

    CHEMINFORM, Issue 20 2010
    Eleanor E. Maciver
    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 Catalytic Asymmetric 6, Electrocyclization: Enantioselective Synthesis of 2-Pyrazolines.

    CHEMINFORM, Issue 20 2010
    Steffen Mueller
    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: Catalytic Asymmetric Conjugate Addition of Nitroalkanes to 4-Nitro-5-styrylisoxazoles.

    CHEMINFORM, Issue 13 2010
    Andrea Baschieri
    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: Catalytic Asymmetric Conjugate Addition of Nitroalkanes to 4-Nitro-5-styrylisoxazoles.

    CHEMINFORM, Issue 13 2010
    Andrea Baschieri
    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: Catalytic Asymmetric 1,3-Dipolar Cycloaddition of Azomethine Ylides with ,,,-Unsaturated Ketones.

    CHEMINFORM, Issue 24 2009
    Jorge Hernandez-Toribio
    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]

    Synthesis of Functionalized Cyclopentenes Through Catalytic Asymmetric [3 + 2] Cycloadditions of Allenes with Enones.

    CHEMINFORM, Issue 24 2006
    Jonathan E. Wilson
    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]

    Catalytic Asymmetric [2,3]-Sigmatropic Rearrangement of Sulfur Ylides Generated from Copper(I) Carbenoids and Allyl Sulfides.

    CHEMINFORM, Issue 2 2003
    Xiaomei Zhang
    No abstract is available for this article. [source]

    Catalytic Asymmetric 1,3-Dipolar Cycloaddition of ,-Iminonitriles

    CHEMISTRY - A EUROPEAN JOURNAL, Issue 18 2010
    Rocío Robles-Machín
    Improving the structural scope: A catalytic asymmetric 1,3-dipolar cycloaddition involving ,-iminonitriles as azomethine precursors has been developed. In the presence of AgOAc/Taniaphos as the catalyst system the reaction of ,-iminonitriles with dimethyl fumarate and N -methyl maleimide affords 2-cyanopyrrolidines with good endo selectivity and enantioselectivity (68,,99,%,ee; see scheme). [source]

    Ligand-Accelerated Asymmetric [1,2]-Stevens Rearrangment of Sulfur Ylides via Decomposition of Diazomalonates Catalyzed by Chiral Bisoxazoline/Copper Complex

    ADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 3 2009
    Jian-Ping Qu
    Abstract The first example of catalytic asymmetric [1,2]-Stevens rearrangement reaction of 1,3-oxathiolanes with diazomalonates has been developed and up to 90% ee is achieved by the bisoxazoline 4e/copper(II) triflate [Cu(OTf)2] complex. [source]

    A catalytic route to acyclic chiral building blocks: Applications of the catalytic asymmetric conjugate addition of organozinc reagents to cyclic enones

    ISRAEL JOURNAL OF CHEMISTRY, Issue 4 2001
    Richard B. C. Jagt
    Through the Cu-phosphoramidite-catalyzed asymmetric conjugate addition a number of chiral cyclic enones are available with high ee. Here we report the sequential conjugate addition to these enones as a route towards multisubstituted chiral cyclic ketones. A subsequent Baeyer,Villiger oxidation followed by ring-opening results in various linear synthons containing multiple stereocenters. This procedure represents a short, catalytic, and highly enantioselective route to a variety of acyclic chiral building blocks. [source]

    Catalytic Asymmetric 1,3-Dipolar Cycloaddition of ,-Iminonitriles

    CHEMISTRY - A EUROPEAN JOURNAL, Issue 18 2010
    Rocío Robles-Machín
    Improving the structural scope: A catalytic asymmetric 1,3-dipolar cycloaddition involving ,-iminonitriles as azomethine precursors has been developed. In the presence of AgOAc/Taniaphos as the catalyst system the reaction of ,-iminonitriles with dimethyl fumarate and N -methyl maleimide affords 2-cyanopyrrolidines with good endo selectivity and enantioselectivity (68,,99,%,ee; see scheme). [source]