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  • 1
    Electronic Resource
    Electronic Resource
    Neue Untersuchungen zur Reaktivität von Formaldehyd-O-oxid, Acetaldehyd-O-oxid und Propionaldehyd-O-oxid (1992)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 125 (1992), S. 2493-2501 
    Details
    ISSN: 0009-2940
    Keywords: Ozonolysis ; Carbonyl oxides ; Ketene acetals ; 1,2-Dioxolanes ; Ozonides, primary ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: New Studies Concerning the Reactivity of Formaldehyde Oxide, Acetaldehyde Oxide, and Propionaldehyde OxideReactivity and selectivity of formaldehyde oxide (1a), acetaldehyde oxide (1b), and propionaldehyde oxide (1c) is tested by adding a cooled solution of one or two dipolarophiles to a solution of the primary ozonides of the olefins 2a, 2b or the ketene acetals 7a-c, respectively. Different selectivities are observed for the different carbonyl oxides. Only 1a is able to react with non-activated olefins like methylenecyclopentane (4a), norbornene (4b), 3-methylstyrene (4c), and cyclopentadiene (4d) under these conditions. Activated olefins turn out to be good quenchers for 1a. Both 1a and 1b react with fulvene 4e in completely different ways. Contrary to 1a, the carbonyl oxides 1b and 1c clearly prefer carbonyl compounds to activated olefins.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19921251123
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  • 2
    Electronic Resource
    Electronic Resource
    Synthese von 1,2-Dioxolanen durch Ozonolyse 1,1-disubstituierter nichtaktivierter Olefine (1992)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 125 (1992), S. 191-195 
    Details
    ISSN: 0009-2940
    Keywords: Ozonolysis ; Alkylidenecycloalkanes ; Carbonyl oxides ; 1,2-Dioxolanes ; 1,2,4-Trioxolanes ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Synthesis of 1,2-Dioxolanes by Ozonolysis of 1,1-Disubstituted Nonactivated OlefinsOzonolyses of the cyclopropyl-substituted olefins 2a, 2b, and 2c do not produce the carbonyl oxides 1a, 1b, and 1c but formaldehyde oxide (1d); 1d can be trapped by the starting olefin and provides the 1,2-dioxolanes 6a, 6b, and 6c, respectively, in ca. 10% yield. Other dioxolanes and normal ozonides may be obtained by the addition of olefins or aldehydes to solutions of the primary ozonides of 2a and 2b.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19921250131
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