Selective Dimerization of Arylalkynes to (E)-1, 4-Diaryl Enynes Catalyzed by the [Ru (p-cymene) Cl2] 2/Acetic Acid System under Phosphine-Free Conditions

M Bassetti, C Pasquini, A Raneri…

Index: Bassetti, Mauro; Pasquini, Chiara; Raneri, Antonino; Rosato, Deborah Journal of Organic Chemistry, 2007 , vol. 72, # 12 p. 4558 - 4561

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Citation Number: 40

Abstract

The commercially available di-μ-chlorobis [(p-cymene) chlororuthenium (II)] complex catalyzes the dimerization of aromatic alkynes in acetic acid at room temperature to form the corresponding (E)-1, 4-diarylbut-1-ene-3-yne derivatives, with high stereoselectivity. The procedure does not require the use of additives and can be carried out in the presence of water or aprotic cosolvents, under homogeneous conditions.