Half-sandwich η-cycloheptatri-ene and -enyl derivatives of titanium and zirconium
作者:Gary M. Diamond、Malcolm L. H. Green、Philip Mountford、Neil M. Walker
DOI:10.1039/dt9920002259
日期:——
Treatment of [Zr(eta-6-C7H8)2] 1 in tetrahydrofuran with iodine gives [Zr(eta-C7H7)(thf)2l] 2 which reacts with PMe3 forming [Zr(eta-C7H7)(PMe3)2l] 3. The latter reacts with iodotrimethylsilane to give the exo-trimethylsilylcycloheptatriene compound [Zrexo-eta-6-C7H7(SiMe3)}(PMe3)2l2] 4. Thermolysis of 4 gives [Zr(eta-6-C7H8)(PMe3)2l2] 5. The compounds [M(eta-C7H7)L2Cl] [M = Ti, L2 = (PMe3)2 6, Me2NCH2CH2NMe2 7 or Me2PCH2CH2PMe2 8; M = Zr, L2 = Me2NCH2CH2NMe2 9] have been prepared in one-pot reactions.