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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 113 (1980), S. 1245-1263 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Sensitized Photooxygenation of Silyl Enol Ethers of Cyclic Ketonesα,β-Unsaturated and α-hydroxy ketones are accessible in prototropic ene-reactions with singlet oxygen by sensitized photooxygenation of cyclic silyl enol ethers and subsequent reduction and solvolysis. In a competing silatropic ene-reaction α-silyloxyketones are formed. Formation of different products depends on ring size, configuration and substitution. At C-6 chirally substituted 2-cyclohexenones are synthesized for the first time by sensitized photooxygenation of chiral silyl enol ethers of optically active starting ketones.
    Notes: Die sensibilisierte Photooxygenierung cyclischer Silylenolether liefert durch prototrope En-Reaktion mit Singulett-Sauerstoff nach Reduktion und Solvolyse α,β-ungesättigte Ketone sowie α-Hydroxyketone. Durch eine konkurrierende silatrope En-Reaktion werden α-Silyloxyketone gebildet. Die Produktverteilung wurde in Abhängigkeit von Ringgröße, Konfiguration und Substitution untersucht. Ausgehend von chiralen Silylenolethern optisch aktiver Ausgangsketone wurden erstmals an C-6 chiral alkylsubstituierte 2-Cyclohexenone synthetisiert.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
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