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  • Electronic Resource  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Kondensierte Ringsysteme, IV. Synthese und spektroskopische Eigenschaften von Dithia- und Oxathia-propellanen (1973)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 106 (1973), S. 2298-2304 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Condensed Ring Systems, IV. Synthesis and Spectroscopic Properties of Dithia- and Oxathia-propellanesThe synthesis of 8,11-dithia- (1, n-4) and 8-oxa-11-thia[4.3.3]propellane (2, n = 4) as well as of 9,12-dithia- (1, n-5) and 9-oxa-12-thia[5.3.3]propellane (2, n = 5) is reported. The n.m.r. spectra of the dithia- (1, n = 1-5) and oxathia-propellanes (2, n-1-5) known to date are compared an discussed.
    Notes: Die Synthese des 8,11-Dithia- (1, n-4) and 8-Oxa-11-thia[4.3.3]propellane (2, n = 4) sowie des 9,12-Dithia- (1, n-5) und 9-Oxa-12-thia[5.3.3]propellans (2, n = 5) wird beschrieben. Die NMR-Spektren (Abb. 1 und 2) der bisher bekannten Dithia- (1, n = 1-5) und Oxathia-propellane (2, n = 1-5) werden verglichen und diskutiert.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19731060725
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  • 2
    Electronic Resource
    Electronic Resource
    Kondensierte Ringsysteme, XIII. Konstitutions- und Konfigurationsaufklärung der isomeren Dichlordithiapropellantetroxide mit Hilfe der 13C-NMR-Spektroskopie (1977)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 110 (1977), S. 2978-2985 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Condensed Ring Systems, XIII. Elucidation of Constitutions and Configurations of Isomeric Dichlorodithiapropellane Tetroxides with the Aid of 13C NMR SpectroscopyDithiapropellanes 1 with n 〉 1 can be converted to the isomeric dichlorodithiapropellane tetroxides 2 (n = 2-5), while 1 with n = 1 decomposes under identical reaction conditions. Even mild oxidation of 3,7-dithia[3.3.1]propellane (1, n = 1) with hydrogen peroxide in glacial acetic acid at room temperature results in elimination of sulfur dioxide and isomerisation to 3,5-dimethylene-tetrahydrothiopyran-1,1-dioxide (5). The constitutions and configurations of the isomeric dichlorodisulfones 2 (n = 2-5) are elucidated with the aid of 13C NMR spectroscopy. - The dichlorodisulfones 2 can be converted to 1,4-polymethylene-Dewar benzenes 3 by a double Ramberg-Bäcklund reaction only if the saturated carbocycle contains at least four methylene groups.
    Notes: Aus den Dithiapropellanen 1 mit n 〉 1 lassen sich die isomeren Dichlordithiapropellantetroxide 2 (n = 2-5) herstellen, während sich 1 mit n = 1 unter den gleichen Reaktionsbedingungen zersetzt. Schon bei der gelinden Oxidation des 3,7-Dithia[3.3.1]propellans (1, n = 1) mit Wasserstoffperoxid in Eisessig bei Raumtemperatur bildet sich unter Abspaltung von Schwefeldioxid und Isomerisierung das 3,5-Dimethylen-tetrahydrothiopyran-1,1-dioxid (5). Die Konstitutionen und Konfigurationen der isomeren Dichlordisulfone 2 (n = 2-5) werden mit Hilfe der 13C-NMR-Spektroskopie aufgeklärt. - Die Dichlordisulfone 2 lassen sich durch doppelte Ramberg-Bäcklund-Reaktion nur dann in die 1,4-Polymethylen-Dewar-Benzole (3) überführen, wenn der gesättigte Carbocyclus mindestens vier Methylengruppen enthält.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19771100903
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    Paper (German National Licenses)
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