title: A general palladium-catalyzed amination of aryl halides with ammonia.
abstract: A new robust palladium/phosphine catalyst system for the selective monoarylation of ammonia with different aryl bromides and chlorides has been developed. The active catalyst is formed in situ from [Pd(OAc)(2)] and air- and moisture-stable phosphines as easy-to-handle pre-catalysts. The productivity of the catalyst system is comparable to that of competitive Pd/phosphine systems; full conversion is achieved with most substrates with 1-2 mol % of Pd source and a fourfold excess of ligand (L).
authors.affiliation: Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Strasse 29a, 18059 Rostock, Germany.
authors.forename: Thomas
authors.initials: T
authors.lastname: Schulz
authors.forename: Christian
authors.initials: C
authors.lastname: Torborg
authors.forename: Stephan
authors.initials: S
authors.lastname: Enthaler
authors.forename: Benjamin
authors.initials: B
authors.lastname: Schäffner
authors.forename: Andreas
authors.initials: A
authors.lastname: Dumrath
authors.forename: Anke
authors.initials: A
authors.lastname: Spannenberg
authors.forename: Helfried
authors.initials: H
authors.lastname: Neumann
authors.forename: Armin
authors.initials: A
authors.lastname: Börner
authors.forename: Matthias
authors.initials: M
authors.lastname: Beller