title: From bifunctional nucleophilic behavior of DBU to a new heterocyclic fluorescent platform.
abstract: [structure: see text] An unexpected discovery of a novel cyclocondensation reaction of 1,8-diazabicyclo[5.4.0]undec-8-ene (DBU) with activated 1,2-dichloro compounds is described. The 2-aminopyrrole skeleton is generated through the concomitant formation of new nitrogen-carbon and carbon-carbon bonds. A new pentacyclic derivative formed upon the reaction of 2,3-dichloroquinoxaline with DBU exhibits strong fluorescence both in solutions (Phi in hexane = 0.4) and in the solid state.
authors.affiliation: Institute of Organic Chemistry of the Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland. daniel@icho.edu.pl
authors.forename: Daniel T
authors.initials: DT
authors.lastname: Gryko
authors.forename: Joanna
authors.initials: J
authors.lastname: Piechowska
authors.forename: Mariusz
authors.initials: M
authors.lastname: Tasior
authors.forename: Jacek
authors.initials: J
authors.lastname: Waluk
authors.forename: Grazyna
authors.initials: G
authors.lastname: Orzanowska