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  • 2,4,6-Triphenylpyrylium tetrafluoroborate  (2)
  • 3-Phenylpropiophenones  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Direct photolysis and electron transfer photooxygenation of enol acetates of 3-phenylpropiophenones (1993)
    Springer
    Monatshefte für Chemie 124 (1993), S. 209-215 
    Details
    ISSN: 1434-4475
    Keywords: Enol acetates of 3-phenylpropiophenones ; 1,3-Acyl migration ; Photoinduced electron transfer ; 2,4,6-Triphenylpyrylium tetrafluoroborate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die direkte Photolyse von Enolacetaten der 3-Phenylpropiophenone1a–c ergab die zugrundeliegenden Propiophenone2a–c und die 1,3-acyl-verschobenen Produkte3a–c. Im Gegensatz dazu ergab die 2,4,6-Triphenylpyrylium-tetrafluorborat-sensitivierte Photolyse der Substrate1a–c die α-Acetyloxypropiophenone7a–c als generelle Produkte. Diese Ergebnisse sind mit der Erzeugung von Radikalpaaren bei der direkten Photolyse und der Bildung von Radikalkationen beim photoinduzierten Elektronen-Transfer-Prozess zu erklären.
    Notes: Summary Direct photolysis of enol acetates of 3-phenylpropiophenones1a–c gives rise to the parent propiophenones2a–c and the 1,3-acyl shift products3a–c. By contrast, 2,4,6-triphenylpyrylium tetrafluoroborate sensitized photolysis of substrates1a–c affords the α-acetyloxypropiophenones7a–c as the most general products. These results have been rationalized according to the generation of radical pairs in the direct photolysis and radical cations in the photoinduced electron transfer processes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00808680
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  • 2
    Electronic Resource
    Electronic Resource
    Electron transfer photofragmentations of 3-phenylpropiophenones (1990)
    Springer
    Monatshefte für Chemie 121 (1990), S. 371-375 
    Details
    ISSN: 1434-4475
    Keywords: Photosensibilization ; Electron transfer ; 2,4,6-Triphenylpyrylium tetrafluoroborate ; 3-Phenylpropiophenones
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Photolyse der 3-Phenylpropiophenone1 a–d in Gegenwart von 2,4,6-Triphenyl-pyrylium-tetrafluoroborat (TPT) ergeben die entsprechenden α,β-ungesättigten Ketone2 a–c und1 d (aus1 c), neben Acetophenon (3), Benzophenon (4), Benzoesäure (5) und Benzaldehyd (6), vermutlich durch Fragmentierung des Radikal-Kations1 + ·, das mittels Übertragung eines Elektrons von1 zuTPT im angeregten Zustand erzeugt wird.
    Notes: Summary Photolysis of 3-phenylpropiophenones1 a–d in the presence of 2,4,6-triphenylpyrylium tetrafluoroborate (TPT) yields the corresponding α,β-unsaturated ketones2 a–c and1 d (from1 c), together with acetophenone (3), benzophenone (4), benzoic acid (5) and benzaldehyde (6), presumably by fragmentations of the radical cation1 + ·, generated via a single electron transfer process from1 to the excitedTPT.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00809453
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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