Ruthenium(III) Schiff base complexes of [ONNO]-type mediated transfer hydrogenation of ketones

摘要

Stable ruthenium(III) Schiff base complexes of general formula [RuX(EPh_3)(LL')] (X = Cl or Br;E = P or As;LL' = [ONNO] donor of the heterocyclic Schiff base ligands) are accessible via simple and convenient synthesis.The complex [RuCl(PPh_3)(DHA-phen)] is found to be efficient catalyst in the transfer hydrogenation of ketones in an excellent conversion up to 99% in the presence of isopropanol/KOH.