title: Multiple sonogashira reactions of polychlorinated molecules. Synthesis and photophysical properties of the first pentaalkynylpyridines.
abstract: Hitherto unknown pentaalkynylpyridines have been prepared in high yields by Sonogashira cross-coupling reactions of pentachloropyridine. Their photophysical properties were studied and compared to those of penta- and hexaalkynylbenzenes which were efficiently prepared by the first Sonogashira reactions of pentachlorobenzene and hexachlorobenzene. The pentaalkynylpyridines show promising fluorescence properties because of their high quantum yields.
authors.affiliation: Institut für Chemie, Universität Rostock, Albert-Einstein-Str. 3a, 18059 Rostock, Germany.
authors.forename: Peter
authors.initials: P
authors.lastname: Ehlers
authors.forename: Antje
authors.initials: A
authors.lastname: Neubauer
authors.forename: Stefan
authors.initials: S
authors.lastname: Lochbrunner
authors.forename: Alexander
authors.initials: A
authors.lastname: Villinger
authors.forename: Peter
authors.initials: P
authors.lastname: Langer