title: Rearrangement from the heteroantiaromatic borole to the heteroaromatic azaborine motif.
abstract: Treatment of 9-chloro-9-borafluorene with N,O-bis(trimethylsilyl)hydroxylamine results in 10-trimethylsilyloxy-9-aza-10-boraphenanthrene 6b. NMR spectroscopy shows that the expected antiaromatic 9-(trimethylsilyloxyamino)-9-borafluorene 5b rearranges to the formally aromatic phenanthrene 6b at room temperature.
authors.affiliation: Institut für Organische Chemie, Universität Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany.
authors.forename: Sunanda
authors.initials: S
authors.lastname: Biswas
authors.forename: Cäcilia
authors.initials: C
authors.lastname: Maichle-Mössmer
authors.forename: Holger F
authors.initials: HF
authors.lastname: Bettinger