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Photophysics and photochemistry of 4-Dihydropyridinones

Aeby D. ; Eichenberger, Eugen ; Haselbach, E. ; Suppan, P. ; Guerry, Philippe ; Neier, Reinhard

In: Photochemistry & Photobiology, 1990, vol. 52, no. 2, p. 283-292

Dihydropyridinones (DHP) react photochemically with olefins to form cycloaddition products. The reactions proceed through the lowest excited state T, of the DHPs, with rate constants which depend on the olefin and can approach the diffusional limit in the most favourable cases. Intra- and inter-molecular sensitization and quenching have been investigated, as well as spectroscopic properties such... More

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    Title
    • Photophysics and photochemistry of 4-Dihydropyridinones
    Author
    • Aeby D.. Institute of Physical Chemistry of the University of Fribourg, Switzerland
    • Eichenberger, Eugen. Institute of Physical Chemistry of the University of Fribourg, Switzerland
    • Haselbach, E.. Institute of Physical Chemistry of the University of Fribourg, Switzerland
    • Suppan, P.. Institute of Physical Chemistry of the University of Fribourg, Switzerland
    • Guerry, Philippe. Institute of Organic Chemistry of the University of Fribourg, Switzerland
    • Neier, Reinhard. Institut de Chimie, Université de Neuchâtel, Switzerland
    Document Type
    • Postprint
    Publication Date
    • 1990
    OAI-PMH Identifier
    • oai:doc.rero.ch:20070827145447-IO
    Submission No.
    • 20070827145447-IO
    Summary
    Dihydropyridinones (DHP) react photochemically with olefins to form cycloaddition products. The reactions proceed through the lowest excited state T, of the DHPs, with rate constants which depend on the olefin and can approach the diffusional limit in the most favourable cases. Intra- and inter-molecular sensitization and quenching have been investigated, as well as spectroscopic properties such as absorption and luminescence spectra, and in particular electron energy loss spectra which have established the energy of the reactive T, state as 295 kJ mol"' (3.07 eV).