A simple method of regenerating areneruthenium dichloride dimers, 6-arene)>2, from their monomeric adducts with amines or tertiary phosphines, RuCl2(η6-arene)L

Article abstract of DOI:10.1016/0022-328X(88)80645-4

The monomeric amine or tertiary phosphine complexes RuCl2(η⁶-arene)L (arene=benzene, p-cymen) can be reconverted into their dimeric precursors 6-arene)>2 by heating with 1,5-cyclooctadiene (COD), 2-propanol, and anhydrous Na2CO3 and subsequent treatment of the resulting ruthenium(0) complexes Ru(η⁶-arene)(η⁴-COD) with HCl; the ligand L can be recovered.