title: Synthesis of unsymmetrical 1,3-diynes via alkyne cross-metathesis.
abstract: The tungsten benzylidyne complex [PhC≡W{OSi(OtBu)3}3] (1) efficiently catalyses the metathetic conversion between symmetrical and unsymmetrical 1,3-diynes, which provides the opportunity to prepare the latter species directly from terminal alkynes by a combination of copper-catalysed homocoupling and catalytic alkyne cross-metathesis (ACM).
authors.affiliation: Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany.
authors.forename: Sin Ting
authors.initials: ST
authors.lastname: Li
authors.forename: Tobias
authors.initials: T
authors.lastname: Schnabel
authors.forename: Sergej
authors.initials: S
authors.lastname: Lysenko
authors.forename: Kai
authors.initials: K
authors.lastname: Brandhorst
authors.forename: Matthias
authors.initials: M
authors.lastname: Tamm