Molybdenum(II) Complexes Containing Cyclopentadienyl-Functionalized N-Heterocyclic Carbenes: Synthesis, Structure, and Application in Olefin Epoxidation

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A set of four different (Cp-x-NHC)Mo(CO)(2)I (CPx = CP, CP*, and Cp-BZ,Cp- NHC= N-heterocyclic carbenes) complexes has been prepared from the one-pot reaction of [MoCl(eta(3)-C-3-H-5)(CO)(2)-(NCMe)(2)] and the corresponding lithium NHC-cyclopentadienides. The modification of the Cp-x-NHC affords a smooth Way to tune the stereoelectronic properties of these new molybdenum complexes. These compounds are air stable both in solution and in the solid state. Preliminary studies on the catalytic expoxidation wich cis-cyclooctene and TBHP as oxidant show that the activity of the catalysts clearly depends on the nature of Cp-x-NHC ligand. The reaction proceeds smoothly toward epoxide; no diols or any other byproduct was detected along the reaction course.
Original languageUnknown
Pages (from-to)4544-4549
Issue number15
Publication statusPublished - 1 Jan 2009

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