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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 116 (1983), S. 3624-3630 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis of 1,2,3,3,6,6-Hexamethyl-l-cyclohexene - A Cascade of C12H+ Carbenium Ion Rearrangements6-Chloro-2,6,7,7-tetramethyl-2-octene (4), prepared via prenyl chloride addition to 2,3,3-trimethyl-1-butene, at room temperature undergoes a zinc chloride/hydrogen chloride-catalysed cyclocondensation to yield 1,2,3,3,6,6-hexamethyl-1-cyclohexene (1). The reaction mechanism is elucidated by isolation of intermediate five-membered carbocycles and by force field calculations.
    Notes: 6-Chlor-2,6,7,7-tetramethyl-2-octen (4), das Prenylchlorid-Additionsprodukt an 2,3,3-Trimethyl-1-buten, geht bei Raumtemperatur in Gegenwart von Zinkchlorid und Chlorwasserstoff eine Cyclokondensation unter Bildung von 1,2,3,3,6,6-Hexamethyl-1-cyclohexen (1) ein. Der Reaktionsmechanismus wird durch die Isolierung intermediär auftretender fünfgliedriger Ringe und durch Kraftfeldrechnungen aufgeklärt.
    Type of Medium: Electronic Resource
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