1971–1976 – Profiting from a New Beginning in Geneva
Keywords:Electronically integrating actinometer, Excited state-selective photoreactions, Intramolecular energy transfer dependence on donor–acceptor topology, Time-resolved ir spectroscopy, α,β-and β,γ-unsaturated ketones
AbstractA few projects of organic photochemistry, which have been investigated in Geneva in 1971–76, are reviewed summarily. They include excited state-selective processes from the n,?* and ?,?* triplets and selectively occurring ? ? ?* induced reactions of ?,?-unsaturated cyclic ketones, oxadi-?-methane rearrangements and 1,3-acetyl shifts of ?,?-unsaturated methyl ketones, and di-?-methane rearrangements of benzoylnaphthobarrelene compounds. Furthermore, intramolecular triplet energy transfer dependence on rigid donor–acceptor syn-anti topologies between indanone and naphthalene moieties most likely reflects competition between radiationless energy dissipation by through-space aromatic ? interaction (amounting to intramolecular exciplex action) and through-?-bond exchange transfer. Finally, electronically integrating actinometry and time-resolved IR spectroscopy of excited states and reaction intermediates are mentioned.
How to Cite
K. Schaffner, Chimia 2009, 63, 846, DOI: 10.2533/chimia.2009.846.
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