The synthesis of (η5-cyclopentadienyl)titanium(IV) alkoxides by alcoholysis of the Ti–π-ligand bond in permethyl η3:η4-allyldiene-(η5-cyclopentadienyl)titanium(II)

The η3:η4-allyldiene-(η5-cyclopentadienyl)titanium(II) complex [Ti(η5-C5Me5){η3:η4-C5Me3(CH2)2}] (1) reacts with three molar equivalents of substituted propargylic alcohols FcCCCMe2(OH) (2a) and PhCCCH2OH (2b) at elevated temperature to give (η5-pentamethylcyclopentadienyl)titanium(IV) alkoxides [Ti(η5-C5Me5)(FcCCCMe2O-κO)3] (3a) and [Ti(η5-C5Me5)(PhCCCH2O-κO)3] (3b), respectively. The crystal structure of 3a has been determined by single-crystal X-ray diffraction.