title: A simple cobalt catalyst system for the efficient and regioselective cyclotrimerisation of alkynes.
abstract: The intermolecular cyclotrimerisation of terminal and internal alkynes can be catalysed by simple cobalt complexes such as a CoBr2(diimine) under mild reaction conditions when treated with zinc and zinc iodide with high regioselectivity in excellent yields.
authors.affiliation: Fachbereich Chemie, Philipps-Universitat Marburg, Hans-Meerwein-Strasse, 35032, Marburg, Germany. Hilt@chemie.uni-marburg.de
authors.forename: Gerhard
authors.initials: G
authors.lastname: Hilt
authors.forename: Thomas
authors.initials: T
authors.lastname: Vogler
authors.forename: Wilfried
authors.initials: W
authors.lastname: Hess
authors.forename: Fabrizio
authors.initials: F
authors.lastname: Galbiati