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  • 1
    Electronic Resource
    Electronic Resource
    Phasentransferkatalysierte Wittig-Reaktionen ohne Basenzusatz (1979)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 112 (1979), S. 2342-2346 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Basefree Wittig Reactions with Phase Transfer CatalytsKetones like trifluoroacetyl compounds  -  giving the haloform reaction in basic solutions  -  are able to react with mono or bis phosphonium fluorides without bases via Wittig reactions with very good yields. The phosphonium fluorides are prepared very easily from other phosphonium halides under phase transfer catalysis of crown ethers. The ratio of the stereoisomeric alkenes in the product and the spectra of the trans- respectively trans-trans alkenes are given.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19791120642
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