Research on Chemical Intermediates

, Volume 12, Issue 3, pp 263–268 | Cite as

Decarbonylation vs. ketene elimination α- vs. β-cleavage) in acyl-alkyl-1,4-biradicals

  • Klaus Hobel
  • Paul Margaretha
Article

Abstract

Decarbonylation is the major reaction path for acyl-alkyl-1,4-biradical 6a formed by photochemical cleavage of the lactone O-CO bond in benzopyrandione 7a. While the α- vs β-cleavage product ratio is not affected by R = CF3 as substituntt on C(3) of the biradical (6b), ketene elimination becomes the major reaction path for 6c (R = tert-butyl).

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Copyright information

© Springer 1989

Authors and Affiliations

  • Klaus Hobel
    • 1
  • Paul Margaretha
    • 1
  1. 1.Instutut für Organische Chemie UniversitätHamburg 13Germany

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