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- W2032084843 abstract "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. Condensed Ring Systems, XIII. Elucidation of Constitutions and Configurations of Isomeric Dichlorodithiapropellane Tetroxides with the Aid of 13C NMR Spectroscopy Dithiapropellanes 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." @default.
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- W2032084843 date "1977-09-01" @default.
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- W2032084843 title "Kondensierte Ringsysteme, XIII. Konstitutions- und Konfigurationsaufklärung der isomeren Dichlordithiapropellantetroxide mit Hilfe der13C-NMR-Spektroskopie" @default.
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- W2032084843 doi "https://doi.org/10.1002/cber.19771100903" @default.
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