848814-69-7Relevant articles and documents
Synthesis, structure, and reactivity of novel ruthenium(II) phenolate complexes
Kondo, Teruyuki,Tsunawaki, Fumiaki,Ura, Yasuyuki,Sadaoka, Kazuo,Iwasa, Tomomichi,Wada, Kenji,Mitsudo, Take-Aki
, p. 905 - 910 (2005)
Reaction of Ru(η6-cot)(dmfm)2 (1) [cot = 1,3,5-cyclooctatriene, dmfin = dimethyl fumarate] with phenol was investigated. At 110°C, a novel ruthenium(II) phenolate complex, Ru(η5- C6H5O)(η5-C8H11) (2), was obtained by the reaction of 1 with phenol in an isolated yield of 52% (74% by NMR). When the reaction was carried out at 130°C, further dehydrogenative ring-closure in an η5-cyclooctadienyl ligand occurred to give Ru(η5-C6H5O)(η5-C 8H9) (3) in an isolated yield of 61% (76% by NMR). For both complexes, the η5-oxocyclohexadienyl bonding mode of a phenoxo ligand was clearly shown by X-ray crystallography and DFT calculation. Complex 2 was smoothly transformed into complex 3 in the presence of dmfm at 130°C for 3 h. Selective O-methylation of an η5- oxocyclohexadienyl ligand in complex 3 proceeded with methyl p-toluenesulfonate to give a novel cationic ruthenium(II) complex, [Ru(η6-C 6H5OMe)(η5-C8H 9)]+OTs- (4), in an isolated yield of 74%.
