title: Gold-catalyzed allene cycloisomerization for pyrrole synthesis: towards highly fluorinated BODIPY dyes.
abstract: A novel synthetic strategy toward highly fluorinated BODIPY dyes with exceptional photostabilities relying on sustainable gold catalysis has been developed. A key to the tailored pyrrole precursors is the gold catalysis performed in ionic liquids as the reaction medium, allowing a facile recycling of the catalysts. The dyes prepared are well-matching with the spectral windows of popular rhodamine dyes and possess high brightness while showing a distinctly higher photostability than the rhodamines especially in aprotic solvents.
authors.affiliation: Organic Chemistry, Dortmund University of Technology, Otto-Hahn-Str. 6, D-44227 Dortmund, Germany. norbert.krause@tu-dortmund.de.
authors.forename: Linda
authors.initials: L
authors.lastname: Lempke
authors.forename: Tobias
authors.initials: T
authors.lastname: Fischer
authors.forename: Jérémy
authors.initials: J
authors.lastname: Bell
authors.forename: Werner
authors.initials: W
authors.lastname: Kraus
authors.forename: Knut
authors.initials: K
authors.lastname: Rurack
authors.forename: Norbert
authors.initials: N
authors.lastname: Krause