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  • 1
    Publication Date: 1985-09-01
    Print ISSN: 0044-2313
    Electronic ISSN: 1521-3749
    Topics: Chemistry and Pharmacology
    Published by Wiley
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 528 (1985), S. 7-21 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Contributions to the Chemistry of Phosphorus. 152. Functionalized Cyclotriphosphanes of the Type (t-BuP)2PX (X = K, SiMe3, SnMe3, Cl, Br, PCl2, P(t-Bu)Cl, P(t-Bu)I)Functionalized cyclotriphosphanes of the type (t-BuP)2PX with electropositive or electronegative substituents X have been prepared on various synthetic routes: KP(t-BuP)2 (1) can be obtained in 50-55 per cent purity by reacting (t-BuP)4 or (t-BuP)3 with potassium. Reaction of 1 with Me3SiCl or Me3SnCl leads to the cyclotriphosphanes (t-BuP)2PSiMe3 (2) and (t-BuP)2PSnMe3 (3), respectively; the cyclocondensation of Cl(t-Bu)P—P(t-Bu)Cl with P(SnMe3)3, however, is more convenient for the preparation of 3. In a similar way the halogenated compounds (t-BuP)2PCl (4) and (t-BuP)2PBr (5) can be obtained from Me3Sn(t-Bu)P—P(t-Bu)SnMe3 (6) and PX3 (X = Cl, Br). The phosphino-substituted cyclotriphosphanes (t-BuP)2P—PCl2 (7), (t-BuP)2P—P(t-Bu)Cl (8), and (t-BuP)2P—P(t-Bu)I (9) are accessible by the reaction of 3 with PCl3 and t-BuPX2 (X = Cl, I), respectively. 2-9 could be obtained free from phosphorus-containing by-products and were 31P-NMR spectroscopically characterized as compounds with a cyclic P3 skeleton.
    Notes: Funktionalisierte Cyclotriphosphane des Typs (t-BuP)2PX mit elektropositiven oder elektronegativen Substituenten X wurden auf verschiedenen Synthesewegen dargestellt: KP(t-BuP)2 (1) kann durch Reaktion von (t-BuP)4 oder (t-BuP)3 mit Kalium in 50-55proz. Reinheit gewonnen werden. Umsetzung von 1 mit Me3SiCl oder Me3SnCl ergibt die Cyclotriphosphane (t-BuP)2PSiMe3 (2) bzw. (t-BuP)2PSnMe3 (3); doch ist für 3 die Cyclokondensation von Cl(t-Bu)P—P(t-Bu)Cl mit P(SnMe3)3 präparativ günstiger. In entsprechender Weise werden aus Me3Sn(t-Bu)P—P(t-Bu)SnMe3 (6) und PX3 (X = Cl, Br) die halogenierten Verbindungen (t-BuP)2PCl (4) bzw. (t-BuP)2PBr (5) erhalten. Durch Reaktion von 3 mit PCl3 oder t-BuPX2 (X = Cl, I) sind die phosphino-substituierten Cyclotriphosphane (t-BuP)2P—PCl2 (7), (t-BuP)2P—P(t-Bu)Cl (8) bzw. (t-BuP)2P—P(t-Bu)I (9) zugänglich. 2-;9 konnten frei von phosphorhaltigen Nebenprodukten gewonnen und 31P-NMR-spektroskopisch eindeutig als Verbindungen mit P3-Ringgerüst charakterisiert werden.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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