Synthesis of unsymmetrical 1, 3-diynes via alkyne cross-metathesis

ST Li, T Schnabel, S Lysenko, K Brandhorst…

Index: Li, Sin Ting; Schnabel, Tobias; Lysenko, Sergej; Brandhorst, Kai; Tamm, Matthias Chemical Communications, 2013 , vol. 49, # 65 p. 7189 - 7191

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Citation Number: 16

Abstract

The tungsten benzylidyne complex [PhC [triple bond, length as m-dash] W {OSi (O t Bu) 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).