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Quaternary Carbons (quaternary + carbon)

Distribution by Scientific Domains
Chemistry100%

Terms modified by Quaternary Carbons

  • quaternary carbon center
    		•

    Selected Abstracts

    ChemInform Abstract: Application of Rh-Catalyzed Cyclization to the Formation of a Chiral Quaternary Carbon.

    CHEMINFORM, Issue 19 2001
    Miyuki Takahashi
    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: Zinc Bromide as Catalyst for the Stereoselective Construction of Quaternary Carbon: Improved Synthesis of Diastereomerically Enriched Spirocyclic Diols.

    CHEMINFORM, Issue 13 2001
    Yong Qiang Tu
    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]

    Construction of Two Vicinal Quaternary Carbons by Asymmetric Allylic Alkylation: Total Synthesis of Hyperolactone,C and (,)-Biyouyanagin,A,

    ANGEWANDTE CHEMIE, Issue 49 2009
    Chao Du
    No abstract is available for this article. [source]

    Construction of Two Vicinal Quaternary Carbons by Asymmetric Allylic Alkylation: Total Synthesis of Hyperolactone,C and (,)-Biyouyanagin,A,

    ANGEWANDTE CHEMIE, Issue 42 2009
    Chao Du
    Aller Anfang ist AAA: Ausgehend von einer palladiumkatalysierten asymmetrischen allylischen Alkylierung (Pd-AAA; siehe Schema) benötigten die kurzen und effizienten Synthesen von Hyperolacton,C und (,)-Biyouyanagin,A nur sechs bzw. sieben Schritte bei 20,% bzw. 8,% Gesamtausbeute. Die Enantiomere dieser Naturstoffe waren mit der gleichen Sequenz ebenfalls zugänglich. [source]

    ChemInform Abstract: Construction of Two Vicinal Quaternary Carbons by Asymmetric Allylic Alkylation: Total Synthesis of Hyperolactone C and (-)-Biyouyanagin A.

    CHEMINFORM, Issue 6 2010
    Chao Du
    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]

    Ferric Chloride Hexahydrate-Catalyzed Highly Regio- and Stereoselective Conjugate Addition Reaction of 2,3-Allenoates with Grignard Reagents: An Efficient Synthesis of ,,,-Alkenoates

    ADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 11-12 2009
    Guobi Chai
    Abstract Ferric chloride hexahydrate was shown to be an efficient catalyst for the conjugate addition of 2,3-allenoates with alkyl-, aryl-, or vinyl-Grignard reagents to synthesize polysubstituted ,,,-unsaturated alkenoates with high regio- and stereoselectivity. The in situ formed magnesium dienolate may readily react with different electrophilic reagents under different reaction conditions with or without a catalyst to construct an allylic quaternary carbon at the ,-position of the ester group and a stereocontrollable retention of the carbon-carbon double bond. [source]