Collect. Czech. Chem. Commun. 2009, 74, 433-442
Published online 2009-02-28 16:06:46

Rh- and Ru-complex-catalyzed dimerization of arylethynes in aqueous environment

Petr Nováka and Martin Kotoraa,b,*

a Department of Organic and Nuclear Chemistry, Faculty of Science, Charles University, Hlavova 8, 128 43 Prague 2, Czech Republic
b Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, v.v.i., Flemingovo nám. 2, 166 10 Prague 6, Czech Republic


Complexes [RhCl(PPh3)3] and [Ru(CHPh)Cl2(PCy3)2] efficiently catalyzed the dimerization of arylethynes to the corresponding 1,4-substituted enynes in aqueous environment in the presence of sodium dodecyl sulfate. The Rh catalyst exhibited almost exclusive preference for the formation of E-isomers, the Ru one exhibits strong preference for the formation of Z-isomers.

Keywords: Dimerizations; Rhodium; Ruthenium; Water chemistry; Terminal alkines; Enynes; Arylacetylenes.

References: 53 live references.