title: Rational synthesis of tripyrranes.
abstract: The rational, chromatography-free synthesis of two regioisomeric 5,10-diaryltripyrranes from pyrrole and aromatic acids has been developed. The strategy is general and should be applicable to a broad range of acids. This methodology was successfully applied to the synthesis of monoprotected dipyrrane. The oxidation of N,N'-bis-mesyltripyrrane under basic conditions led to the formation of both known tripyrrin-1-one and unknown 1-methoxytripyrrin-a fluorescent dye strongly absorbing green light.
authors.affiliation: Institute of Organic Chemistry of the Polish Academy of Sciences, Warsaw, Poland.
authors.forename: Michał
authors.initials: M
authors.lastname: Gałeezowski
authors.forename: Jarosław
authors.initials: J
authors.lastname: Jaźwiński
authors.forename: Jan P
authors.initials: JP
authors.lastname: Lewtak
authors.forename: Daniel T
authors.initials: DT
authors.lastname: Gryko