Issue 4, 1989

Propentdyopents and related compounds. Part 4. Propentdyopent–alkanol adducts by the photo-oxygenation of pyrromethenones

Abstract

Photo-oxygenation of tetraethylpyrromethenone and of tetramethylpyrromethenone in methanol in the presence of oxygen and a porphyrin photosensitises gives the corresponding methanol–propentdyopent adducts in good yields. The photo-oxygenation reaction is shown not to be a satisfactory route to the analogous adducts with ethanol, propanol and butanol, but these compounds can be prepared by the acid-catalysed alcoholysis of the zinc(II) bis(tetra-alkylpropentdyopent) complexes. The photooxygenation is applied to [meso-13C]tetraethylpyrromethenone, and the result confirms the formulation of the methanol–propentdyopents as valley methoxy derivatives.

Article information

Article type
Paper

J. Chem. Soc., Perkin Trans. 1, 1989, 711-714

Propentdyopents and related compounds. Part 4. Propentdyopent–alkanol adducts by the photo-oxygenation of pyrromethenones

R. Bonnett, S. Ioannou and F. J. Swanson, J. Chem. Soc., Perkin Trans. 1, 1989, 711 DOI: 10.1039/P19890000711

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