Library

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 439 (1978), S. 121-133 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthese and Properties of Acylphosphanes. V. Tert. Butyl- and PhenylpivaloylphosphanesSynthese and properties of P-alkyl/arylmono and dipivaloylphosphanes are described using the tert. butyl and phenyl compounds as examples. Monopivaloylphoshanes are formed in the reaction of P-alkyl/arylpivaloyltrimethylsilylphosphanes (enol forms) with methanole and of P-alkyl/aryltrimethylsilylphosphanes or P-alkyl/arylmonolithiumphosphides with pivaloyl chloride; side reactions give 1,2-di(alkyl, aryl)-1,2-dipivaloyldiphosphanes. Tert. butylpivaloylphosphane is a rather stable compound; under the influence of light phenylpivaloylphosphane decomposes to pentaphenylcyclopentaphosphane, 2,2-dimethylpropionaldehyde, carbon monoxide and isobutane. With methyllithium P-alkyl/aryllithiumpivaloylphosphides are obtained, and subsequent reactions with pivaloylchloride yield P-alkyl/aryldipivaloylphosphanes. These compounds are also synthesized from P-alkyl/arylpivaloyltrimethylsilylphosphanes (enol forms) or P-alkyl/aryldilithiumphosphides and pivaloyl chloride.
    Notes: Am Beispiel der tert. Butyl- und Phenylderivate wird über Synthese und Eigenschaften von P-Alkyl/arylmono- und -dipivaloylphosphanen berichtet. Die Monopivaloylverbindungen entstehen bei der Umsetzung der P-Alkyl/arylpivaloyltrimethylsilylphosphane (Enolformen) mit Methanol sowie der P-Alkyl/aryltrimethylsilylphosphane und der P-Alkyl/arylmonolithiumphosphide mit Pivaloylchlorid. Nebenreaktionen führen zur Bildung von 1,2-Di(alkyl, aryl)-1,2-dipivaloyldiphosphanen. Tert. Butylpivaloylphosphan ist thermisch recht beständig; Phenylpivaloylphosphan zersetzt sich unter Lichteinwirkung zu Pentaphenylcyclopentaphosphan, 2,2-Dimethylpropionaldehyd, Kohlenmonoxid und Isobutan. Mit Methyllithium können die P-Alkyl/aryllithiumpivaloylphosphide dargestellt werden. Umsetzung mit Pivaloylchlorid führt dann zu den P-Alkyl/aryldipivaloylphosphanen. Diese Verbindungen sind auch aus P-Alkyl/arylpivaloyltrimethylsilylphosphanen (Enolformen) sowie P-Alkyl/aryldilithiumphosphiden und Pivaloylchlorid zugänglich.
    Additional Material: 7 Tab.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...