title: Efficient access to titanaaziridines by C-H activation of N-methylanilines at ambient temperature.
abstract: Titanaaziridines or η(2)-imine titanium complexes are considered key intermediates of the titanium-catalyzed hydroaminoalkylation of alkenes. Herein, we present an efficient synthetic route to this class of compounds, starting from N-methylanilines and a bis(η(5):η(1)-pentafulvene)titanium complex. Consecutive reactions on the η(2)-methyleneaniline complexes, characterized for the first time, prove a high chemical versatility. In particular, hydroaminoalkylation products were found in reactions of the three-membered titanacycles with alkenes. For the first time, all the intermediates of the hydroaminoalkylation of alkenes were isolated and characterized.
authors.affiliation: Institut für Chemie, Fakultät für Mathematik und Naturwissenschaften, Carl von Ossietzky Universität Oldenburg, Postfach 2503, 26111 Oldenburg (Germany).
authors.forename: Manfred
authors.initials: M
authors.lastname: Manßen
authors.forename: Nicolai
authors.initials: N
authors.lastname: Lauterbach
authors.forename: Jaika
authors.initials: J
authors.lastname: Dörfler
authors.forename: Marc
authors.initials: M
authors.lastname: Schmidtmann
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Saak
authors.forename: Sven
authors.initials: S
authors.lastname: Doye
authors.forename: Rüdiger
authors.initials: R
authors.lastname: Beckhaus
keywords: CH activation; alkene titanium; amine; titanaaziridine