Synthesis of novel photochromic pyrans via palladium-mediated reactions

Böttcher, C., Zeyat, G., Ahmed, S. A., Irran, E., Cordes, T., Elsner, C., Zinth, W. & Rueck-Braun, K., 27-May-2009, In : Beilstein Journal of Organic Chemistry. 5, 25, p. 1-7 7 p.

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  • Christoph Böttcher
  • Gehad Zeyat
  • Saleh A. Ahmed
  • Elisabeth Irran
  • Thorben Cordes
  • Cord Elsner
  • Wolfgang Zinth
  • Karola Rueck-Braun
Photochromic pyrans for applications in material and life sciences were synthesized via palladium-mediated cyanation, carbonylation and Sonogashira cross-coupling starting from a bromo-substituted naphthopyran and benzopyrans. A novel photoswitchable benzopyran-based ω-amino acid for Fmoc-based solid-phase peptide synthesis is presented. The photochromic behaviour of the 3-cyano-substituted benzopyran was investigated by time-resolved absorption spectroscopy in the picosecond time domain.
Original languageEnglish
Pages (from-to)1-7
Number of pages7
JournalBeilstein Journal of Organic Chemistry
Issue number25
Publication statusPublished - 27-May-2009
Externally publishedYes


  • photochromism, palladium-mediated coupling reactions, naphthopyrans, chromenes, benzopyrans, OPTICAL SWITCHES, CHANNEL OPENERS, CHROMENES, HALIDES, LIGHT

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