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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 114 (1981), S. 909-915 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: New Synthetic Methods, 3. Tetrahydrothiopyran-3-one 1,1-Dioxide, a Usefull 4 C Synthon for the Stereoselective Synthesis of (Z)- (E)-γ,δ-Unsaturated Carboxylic AcidsBy alkylation and ring opening together with bromination, tetrahydrothiopyran-3-one 1,1-dioxide (2) is converted into α-halosufone intermediates, which can be transformed stereoselectively by Ramberg-Backlund rearrangement to (Z)-or (E)-γ,δ-unsaturated carboxylic acids 5.
    Notes: Tetrahydrothiopyran-3-on-1,1-dioxid (2) wird durch Alkylierung und Ringöffnung unter Bromierung zu α-Halosulfon-Zwischenstufen umgesetzt, die durch Ramberg-Backlund-Umlagerung stereoselektiv in γ,δ-ungesättigte Carbonsäuren 5 übergeführt werden.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
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