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Pentadienyl migration and abstraction in yttrium aluminabenzene complexes including a single-component catalyst for isoprene polymerization

Chemical Communications, ISSN: 1364-548X, Vol: 55, Issue: 49, Page: 7089-7092
2019
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Article Description

Aluminabenzene complex [(1-Me-3,5-tBu-CHAl)(μ-Me)Y(2,4-dtbp)] (2,4-dtbp = 2,4-di-tert-butylpentadienyl) reacts with LiN(SiHMe) according to a methyl/silylamido exchange and formation of [(1-Me-3,5-tBu-CHAl){μ-N(SiHMe)}Ln(2,4-dtbp)] which engages in a donor(THF)-dependent reversible Ln-to-Al-pentadienyl migration. The reaction of [(1-Me-3,5-tBu-CHAl)(μ-Me)Y(2,4-dtbp)] with [CPh][B(CF)] results in pentadienyl group abstraction affording cationic complex [(1-Me-3,5-tBu-CHAl)(μ-Me)Y(benzene)][B(CF)] which acts as a single-component catalyst in isoprene polymerization.

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