title: Selective dimerization of arylalkynes to (E)-1,4-diaryl enynes catalyzed by the [Ru(p-cymene)Cl(2)](2)/acetic acid system under phosphine-free conditions.
abstract: The commercially available di-mu-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.
authors.affiliation: CNR, Istituto di Metodologie Chimiche, Dipartimento di Progettazione Molecolare, Università La Sapienza, 00185 Roma, Italy. mauro.bassetti@uniroma1.it
authors.forename: Mauro
authors.initials: M
authors.lastname: Bassetti
authors.forename: Chiara
authors.initials: C
authors.lastname: Pasquini
authors.forename: Antonino
authors.initials: A
authors.lastname: Raneri
authors.forename: Deborah
authors.initials: D
authors.lastname: Rosato