Triphenylpyrylium tetrafluoroborate-sensitized photochemistry of the terpenes sabinene, α-phellandrene, and α- and γ-terpinene

María José Climent, Miguel Angel Miranda, Heinz Roth

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The triphenypyrylium tetrafluoroborate (TPT)-sensitized reactions of several terpene donor molecules, including sabinene (1), α-phellandrene (4), α-terpinene (5) and γ-terpinene (6) give rise to significantly different products than reactions induced by other electron-transfer sensitizers, such as 1,4-dicyanobenzene (DCB). The divergent reactions require decidedly different key intermediates; the products obtained with TPT can be explained by dissociative recombination of the intermediate radical-radical cation pair in the triplet state, generating donor-derived biradicals.

Original languageEnglish (US)
Pages (from-to)1563-1567
Number of pages5
JournalEuropean Journal of Organic Chemistry
Issue number8
Publication statusPublished - Apr 1 2000


All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Organic Chemistry


  • Electron transfer reactions
  • Photochemistry
  • Radical ions
  • Terpenes
  • Triplet recombination

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