Complexation of Titana- and Zirconadihydrofuran Metallacycles with Organoaluminium Compounds and Catalytic Activity of the Resulting Complexes in Polymerization of ϵ-Caprolactoneстатья
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Аннотация:The interaction of metalladihydrofurans Cp2Ti[η2‐C(SiMe3)=C(Ph)‐CR1(R2)O] (R1=R2=Me (1); R1=H, R2=Ph) and Cp2Zr[η2‐C(SiMe3)=C(SiMe3)‐C(Me)2O] with iBu2AlH gives 1:1 complexes containing the Al−H−M bridge (M=Ti, Zr) along with the coordination Al−O bond. By contrast, the reaction of 1 with EtAlCl2 yields a 1:1 adduct containing only the coordination Al−O unit. All the complexes obtained are capable of catalysing the ring‐opening polymerization of ϵ‐caprolactone.