Synthesis of cyclopentadienyl ruthenium complexes bearing pendant chelating picolinates through an electrophilic precursor

This note reports the facile synthesis of two ruthenium cyclopentadienyl half-sandwich complexes functionalized with coordinating alpha-picolinates. The synthetic approach involves the (eta(5)-chlorometliylcyclopentadienyl)(eta(6)-benzeneftuthenium(II) cation as a useful common building block for cyclopentadienyl complexes bearing anchored ligands. (C) 2007 Elsevier B.V. All rights reserved.