title: Preferential oxidative addition in Suzuki cross-coupling reactions across one fluorene unit.
abstract: The Suzuki-type cross-coupling reaction of 2,7-dihalofluorenes with 1 equiv of arylboronic acid and Pd2(dba)3/P(t-Bu3) as a catalyst system is investigated. The exclusive formation of the diarylated coupling product demonstrates that "preferential oxidative addition" is also applicable to fluorene monomers due to a controlled intramolecular motion of the regenerated Pd(0) catalyst across the "large" distance between the 2- and the 7-position of one fluorene monomer.
authors.affiliation: Makromolekulare Chemie and Institut für Polymertechnologie, Bergische Universität Wuppertal, Gauss-Strasse 20, D-42097 Wuppertal, Germany.
authors.forename: Sven K
authors.initials: SK
authors.lastname: Weber
authors.forename: Frank
authors.initials: F
authors.lastname: Galbrecht
authors.forename: Ullrich
authors.initials: U
authors.lastname: Scherf