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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1979 (1979), S. 1881-1889 
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis of cis- and trans-3-Phenoxyproline**Allylic bromination of the 1,2-dehydroproline ester 4 and reaction of the resulting bromoimine 3 with thallium phenolate affords 3-phenoxy-1,2-dehydroproline methyl ester (9). Reduction experiments with 9 and 10 are described, which lead in the most favorable case to a mixture of the corresponding cis/trans-isomeric prolines 11a and 11b in a ratio of 2:3. A “one-pot” procedure starting from 3 is described for the preparation of 7a.
    Notes: Allylbromierung des 1,2-Dehydroprolinesters 4 und Umsetzung des entsprechenden Bromimins 3 mit Thalliumphenolat gibt den 3-Phenoxy-1,2-dehydroprolin-methylester (9). Reduktionsversuche an 9 sowie 10 werden beschrieben und führen im günstigsten Fall zu einer Mischung der entsprechenden cis/trans-isomeren Proline 11a und 11b im Verhältnis 2:3. Ausgehend von 3 wird eine“Eintopf”-Reaktion zur Darstellung von 7a beschrieben.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
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