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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 115 (1982), S. 1437-1447 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Cyclopentenone Derivatives, V. Stereoselective Cyclopentanone Anellations1,3 or 1,4 located donating centers in additions to 4-acetoxy-2-cyclopenten-1-one (1) stereoselectively give rise to cyclic cis anellation products (5, 13, 16, 20-22) which depending on substituents may be opened to cis disubstituted cyclopentanone derivatives (5 → 10). Starting with the 1,5 located donor 19d corresponding trans hydroazulene derivative (23) is formed. This way an intermediate for a simple total synthesis of vetivazulene (29) is obtained.
    Notes: 1,3- oder 1,4-ständige Doppeldonatoren erbringen bei der Addition an 4-Acetoxy-2-cyclopenten-1-on (1) stereoselektiv cyclische cis-Anellierungsprodukte (5, 13, 16, 20-22), die bei geeigneter Substitution auch zu cis-disubstituierten Cyclopentanon-Derivaten geöffnet werden können (5 → 10). Erst beim 1,5-ständigen Doppeldonator 19d erfolgt Bildung des korrespondierenden trans-Hydroazulens (23). Auf diese Weise gewinnt man ein Zwischenprodukt für eine einfache Totalsynthese des Vetivazulens (29).
    Type of Medium: Electronic Resource
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