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  • 1
    Electronic Resource
    Electronic Resource
    Unusual C=C Bond Migration in 3-Ylidene-2,5-piperazinediones (2000)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 2000 (2000), S. 1993-1999 
    Details
    ISSN: 1434-193X
    Keywords: Ketones ; Tautomerism ; Double bond migration ; Peptides ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: ---Treatment of 3-alkylidene or 3-benzylidene-2,5-piperazinediones 6 with catalytic amounts of acid gives rise to the formation of isomers 7 by migration of the C=C bond into the alkyl substituent at position 6, or results in mixtures of racemic 7 and E isomers 8. The existence of tautomeric equilibria is discussed.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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