Synthesis of Zirconium Aryloxide Complexes Containing Pendent Vinyl Groups

The attachment of pendent olefin groups to oxygen-ligated zirconium complexes using olefin-substituted phenols
and alcohols and readily accessible zirconium reagents is described. Syntheses of three crystallographically
characterizable complexes isolable in 55−90% yield are reported. Eugenol, HOC6H3(OMe-2)(CH2CHCH2-4)
(HOAr) reacts with [Zr(OiPr)4(HOiPr)]2 in toluene to form [(iPrO)2(ArO)Zr(μ-OiPr)]2, 1. CH2CHCH2OH reacts
with [Zr(NMe2)4]2 in the presence of 2,6-dimethylphenol to form the mixed ligand salt, {Me2NH2}{[(2,6-Me2C6H3O)3Zr]2(μ-OCH2CHCH2)3}, 2. The potassium salt derived from eugenol, KOAr, reacts with “Zr(OEt)4”
in THF to form [K2Zr(OAr)4(OEt)]2(O), 3.