Abstract

Treatment of a triruthenium complex having μ3-methylidyne and μ3-propyne ligands, (Cp*Ru)3(μ3-CH)(μ3-η2-HCCMe)(μ-H)2 (6), with benzene results in arylation of the propyne ligand via the C−H bond activation of benzene to yield the μ3-phenylmethylacetylene complex (Cp*Ru)3(μ3-CH)(μ3-η2:η2(⊥)-PhCCMe) (7). An X-ray diffraction study of 7 clearly established that regiospecific arylation occurred at the terminal position of the propyne ligand.

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