A sequential Sonogashira cross-coupling/Pd-mediated oxidative homocoupling strategy affords two-dimensional dehydrobenzoannulene trefoils containing different sizes of the central annulenic ring system. Use of these conditions instead of Cu-mediated homocoupling conditions yields a structural isomer possessing a triphenylene (annulene) core. Noticeable differences in the absorption and emission spectra are observed depending upon the core unit.
ASJC Scopus subject areas
- Organic Chemistry
- Physical and Theoretical Chemistry