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  • 1980-1984  (1)
  • Inorganic Chemistry  (1)
  • NADH
  • 1
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Zwei Verfahren zur Darstellung α-trimethylsubstituierter Methylphosphane von genereller Anwendungsbreite werden vorgestellt. Phenylierte Vertreter PhPR—CH2—Tms (2a - ) lassen sich durch Na-Spaltung in NH3 und nachfolgende Kondensation mit Cl—CH2—Tms gewinnen. Metallierung mit n-BuLi und TmsCl—Einwirkung führt zur Zweitsilylierung in αPosition (3a - d, f. Diorganylamino-funktionelle Derivate 5a - e und 6 sind vorteilhaft über eine Primäraktivierung (Grignardierung oder Lithiierung) der Silylmethan-Komponenten zu erhalten. Die oxidative Ylidierung mit CCl4 ergibt nach Gl. (7) in allen Fällen P-Chlor-methylphosphorane. Außer durch Elementaranalyse wird die Konstitution sämtlicher Verbindungen durch die 31P{1H}- und komplementären 13C{1H}-Daten gesichert.Phosphorus-Carbon-Halogen Compounds. XXV. α-Trimethylsilyl-substituted Methylphosphanes: Synthesis and CCl4—Oxidation to P-Chlor-methylene-phosphoranesTwo procedures of general applicability for the synthesis of αxyltrimethylsilyl-substituted methylphosphanes are reported. Phenylated species PhPR—CH2—Tms (2a - e) can be obtained by Na cleavage in NH3 and subsequent condensation with Cl—CH2—Tms. Metallation with n-BuLi and treatment with TmsCl causes two-fold silylation in α-position (3a - d, f). Diorganylamino-functionalized derivatives 5a - e and 6 are preferrably prepared by initial activation (grignardation or lithiation) of the silylmethane component. Oxidative ylidation with CCl4 yields in all cases P-chloro-methylenephosphoranes according to eq. (7). The constitution of all compounds has been confirmed by 31P{1H} and complementary 13C{1H} data in addition to elemental analyses.
    Additional Material: 6 Tab.
    Type of Medium: Electronic Resource
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