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  • 1
    ISSN: 0044-2313
    Keywords: Diaminophosphanylethylene ; mono- and bis(difluorophosphoranyl)-ethylene ; n-hexylidene-fluorophosphorane ; 2,4-di-n-pentyl-1λ5, 3λ5 -diphosphete; n. m. r., ir spectra ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Mono- and Bis(difluorophosphoranyl)ethylene, n-Hexylidene-fluorophosphorane, and a 2,4-Di-n-pentyl-1λ5, 3λ5 -diphospheteBis(diethylamino)phosphanylethylene, 1, is converted by SF4 into bis(diethylamino)difluorophosphoranylethylene, 2. Analogously trans-1,2-bis(diphenylphosphanyl)ethylene, 3, is converted into trans-1,2-bis(difluorodiphenylphoranyl)ethylene, 4. 2 reacts with n-butyllithium to give n-hexylidene-bis(diethylamino)fluorophosphorane, 5. With more n-butyllithium, the main product n-hexylidene-bis(diethylamino)-n-butylphosphorane, 7, and the by-product 2,4-di-n-pentyl-1,1,3,3-tetrakis(diethylamino)-1λ5, 3λ5 -diphosphete, 8, are formed. With t-butyllithium 2 yields 3,3-dimethyl-butylidene-bis(diethylamino)fluorophosphorane, 6. All new compounds 1, 2, 4-8 are characterized by their nmr and ir spectra.
    Notes: Bis(diethylamino)phosphanylethylen, 1, wird durch SF4 in Bis(diethylamino)difluorphosphoranylethylen, 2, übergeführt. Auf analoge Weise entsteht aus trans-1,2-Bis(diphenylphosphanyl)ethylen, 4. 2 reagiert mit n-Butyllithium zu n-Hexyliden-bis(diethylamino)fluorphosphoran, 5, aus dem mit weiterem n-Butyllithium als Hauptprodukt n-Hexyliden-bis(diethylamino)-n-butylphosphoran, 7, und als Nebenprodukt 2,4-Di-n-pentyl-1,1,3,3-tetrakis(diethylamino)-1λ5, 3λ5-diphosphet, 8, entsteht. Mit t-Butyllithium bildet 2 3,3-Dimethyl-butyliden-bis(diethylamino)fluorphosphoran, 6. Alle neuen Verbindungen 1, 2, 4-8 werden durch ihre NMR- und IR-Spektren charakterisiert.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 33 (1995), S. 553-556 
    ISSN: 0749-1581
    Keywords: NMR ; 13C NMR ; 31P NMR ; 1,4-dihydro-1λ5,4λ5-diphosphinines ; ABX spin systems ; sign of 2J(PC),4J(PC) coupling constants ; isotope effects ; 3J(PP) ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The ABX spin systems of the [mono-13C]isotopomers with vinylic and phenyl ipso-13C atoms of a number of symmetrical 1,4-dihydro-1,4-diphenyl-1λ5,4λ5-diphosphinines were analysed. The substituent dependence of the absolute signs and magnitudes of 2J(PC) between the two 31P nuclei and two vinylic 13C atoms and of the 4J(PC) and 3J(PP) are reported. 13C isotope effects on δ(31P) and 3J(PP) are discussed.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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