Efficient intermolecular [2 + 2 + 2] alkyne cyclotrimerization in aqueous medium using a ruthenium(IV) precatalyst.
The dimeric bis(allyl)-ruthenium(IV) complex [{Ru(eta3:eta3-C10H16)(mu-Cl)Cl}2] (C10H16 = 2,7-dimethylocta-2,6-diene-1,8-diyl) was found to catalyze efficiently the [2 + 2 + 2] cyclization of terminal and internal alkynes in aqueous medium.
Cadierno
Victorio
V
Departamento de Química OrgAnica e InorgAnica, Instituto Universitario de Química Organometálica Enrique Moles (Unidad Asociada al CSIC), Universidad de Oviedo, JuliAn Claveria 8, E-33006 Oviedo, Spain. vcm@uniovi.es
García-Garrido
Sergio E
SE
Gimeno
José
J