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  • Organic Chemistry  (1)
  • 1985-1989  (1)
  • 1975-1979
  • 1985  (1)
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  • 1985-1989  (1)
  • 1975-1979
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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1985 (1985), S. 589-598 
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Photolyse von Enolacetaten und α-Bromderivaten von o-(Acyloxy)acetophenonenUV-Bestrahlung der Enolacetate 3a - g in Benzol liefert o-(Acetoxy)acetophenone 2 und 2-Methyl-chromone 4 als Hauptprodukte. Unter den gleichen experimentellen Bedingungen bleiben die Dimethylderivate 3h und 3i unverändert. Das α-Bromketon 5a liefert in Abhängigkeit von den Bestrahlungsbedingungen Mischungen aus o-(Acetoxy)acetophenon (2a), dem Diketon 6 und/oder α-Acetoxy-o-hydroxyacetophenon (7). Die Ähnlichkeiten und Unterschiede zwischen beiden Reihen von Experimenten sowie mechanistische Überlegungen werden diskutiert.
    Notes: UV irradiation of enol acetates 3a - g in benzene gives mainly o-(acetoxy)acetophenones 2 and 2-methylchromones 4. Under the same conditions, the dimethyl derivatives 3h and 3i remain unaffected. The α-bromo ketone 5a gives rise to mixtures of o-(acetoxy)acetophenone (2a), the diketone 6, and/or α-acetoxy-o-hydroxyacetophenone (7), depending on the irradiation conditions. The similarities and differences between the two series of experiments, as well as their possible mechanistic implications, are discussed.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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