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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 108 (1975), S. 3271-3280 
    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-Aryl-1-hetero-substituted λ5-Phosphorins by Arylation of λ3-phosphorins with Aryldiazonium Salts in the Presence of Nucleophiles2,4,6-Trisubstituted λ3-phosphorins react in acetonitrile or dimethoxyethane with aryldiazonium tetrafluoroborates to give 1-aryl-1-fluoro-λ5-phosphorins 4 (Nu = F). In the presence of alcohols or phenols 1-alkyloxy (or 1-aryloxy)-1-aryl-λ5-phosphorins 4 (Nu = OR) are produced; in the presence of water 1,1′-oxybis(1-aryl-λ5-phosphorins) 10 are formed. The latter can also be transformed into 1-alkoxy(or 1-aryloxy-)-1-aryl-λ5-phosphorins 4 (Nu = OR) by nucleophilic displacement with alcohols or phenols. With alkanthiols in the presence of Lewis acids 1-alkylthio-1-aryl-λ5-phosphorins 11 (Nu = SR) are produced, which are inaccessible by the former method. The mechanism is discussed especially in connection with some unexpected products which were observed.
    Notes: Bei der Umsetzung von 2,4,6-trisubstituierten λ3-Phosphorinen mit Aryldiazonium-tetrafluoroboraten in Acetonitril oder Dimethoxyäthan entstehen 1-Aryl-1-fluor-λ5-phosphorine 4 (Nu = F). In Gegenwart von Alkoholen und Phenolen bilden sich 1-Alkoxy(bzw. 1-Aryloxy)-1-aryl-λ5-phosphorine 4 (Nu = OR), in Gegenwart von Wasser 1,1′-Oxybis(1-aryl-λ5-phosphorine) 10. Letztere können durch nucleophile Verdrängung mit Alkoholen oder Phenolen ebenfalls in 1-Alkoxy-(bzw. 1-Aryloxy)-1-aryl-λ5-phosphorine 4 (Nu = OR) übergeführt werden; mit Alkanthiolen in Gegenwart von Lewis-Säuren entstehen nach dem ersten Verfahren nicht zugängliche 1-Alkylthio-1-aryl-λ5-phosphorine 11 (Nu = SR). Der Mechanismus wird insbesondere im Zusammenhang mit einigen beobachteten, unerwarteten Reaktionsprodukten diskutiert.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
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