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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 494 (1982), S. 55-66 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Metalation of Benzyl Phosphines. IIWhereas o-bromobenzyldiorganophosphines react with n-BuLi in ether to give o-metalated products only, o-chlorobenzyldiorganophosphines leads to α-metalation and/or nucleophilic substitution at phosphorus, depending on the size of the substituents at phosphorus and the acidity of the CH2-protons. Under standard conditions o-ClC6H4CH2P(t-Bu)2 does not react with n-BuLi. A preliminary structure of [ (t-Bu)2]2 determined by X-ray diffraction reveals the large steric requirements of the t-butyl groups.
    Notes: Während die o-Brombenzyldiorganophosphine ausnahmslos mit n-BuLi in Ether unter o-Metallierung reagieren, findet im Falle der o-Chlorbenzyldiorganophosphine in Abhängigkeit von der Größe der am Phosphor fixierten Substituenten und der Acidität der CH2-Protonen α-Metallierung und/oder nucleophile Substitution am Phosphor statt. Unter Standard-Bedingungen reagiert das o-ClC6H4CH2P(t-Bu)2 nicht mit n-BuLi. Eine Röntgenkristallstrukturanalyse von [(t-Bu)2]2 beweist den großen Raumbedarf der t-Butylgruppen am Phosphor.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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