6533b834fe1ef96bd129df43
RESEARCH PRODUCT
ortho-Metalation of aromatic ethers by yttrium alkyl complexes that contain a linked amido-cyclopentadienyl ligand
Masanori KitamuraThomas P. SpaniolJun OkudaTamotsu Takahashisubject
chemistry.chemical_classificationMetalationStereochemistryLigandOrganic ChemistryThioanisoleFluorobenzeneAnisoleBiochemistryMedicinal chemistryInorganic Chemistrychemistry.chemical_compoundchemistryCyclopentadienyl complexMaterials ChemistryPhysical and Theoretical ChemistryAlkylMethyl groupdescription
Abstract The reaction of the half-sandwich alkyl complex [Y(η5:η1-C5Me4CH2SiMe2NtBu)(CH2SiMe3)(THF)] (1) with anisole smoothly gives the ortho-metalation product [Y(η5:η1-C5Me4CH2SiMe2NtBu)(2-C6H4OMe)(THF)] (2). 3- and 4-Methylanisole as well as phenetole analogously undergo ortho-metalation, whereas thioanisole, N,N′-dimethylaniline, fluorobenzene, and trifluorobenzene do not react with yttrium complex 1. 2-Methylanisole reacts with 1 under activation of the ring methyl group to give the 2-methoxybenzyl complex [Y(η5:η1-C5Me4CH2SiMe2NtBu)(CH2C6H4OMe-2)(THF)] (6). A single-crystal X-ray structure analysis of the 2-anisyl complex 2 revealed a four-legged piano-stool configuration with the methoxy group coordinated cis to the amido-function of the ancillary ligand.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2003-11-01 | Journal of Organometallic Chemistry |