title: BN-phenanthryne: cyclotetramerization of an 1,2-azaborine derivative.
abstract: Thermolysis of 9-azido-9-borafluorene in heptane solution produces the tetramer of a BN-phenanthryne. The isolation of the self-trapping product provides evidence for the involvement of the BN-aryne in the thermolysis reaction. Its formation may be rationalized by denitrogenation of the azide and ring enlargement.
authors.affiliation: Institut für Organische Chemie, Universität Tübingen, Auf der Morgenstelle 18, 72076 Tübingen (Germany), Fax: (+) +49 7071 29 5244 http://www.poc.uni-tuebingen.de.
authors.forename: Matthias
authors.initials: M
authors.lastname: Müller
authors.forename: Cäcilia
authors.initials: C
authors.lastname: Maichle-Mössmer
authors.forename: Holger F
authors.initials: HF
authors.lastname: Bettinger
keywords: arynes; azaborines; azides; reactive intermediates; thermolysis