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

Damir Barisic; Jakob Lebon; Cäcilia Maichle-Mössmer; Reiner Anwander

doi:10.1039/c9cc02857a

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

Chem Commun (Camb). 2019 Jun 13;55(49):7089-7092. doi: 10.1039/c9cc02857a.

Authors

Damir Barisic¹, Jakob Lebon, Cäcilia Maichle-Mössmer, Reiner Anwander

Affiliation

¹ Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany. reiner.anwander@uni-tuebingen.de.

PMID: 31150028
DOI: 10.1039/c9cc02857a

Abstract

Aluminabenzene complex [(1-Me-3,5-tBu2-C5H3Al)(μ-Me)Y(2,4-dtbp)] (2,4-dtbp = 2,4-di-tert-butylpentadienyl) reacts with LiN(SiHMe2)2 according to a methyl/silylamido exchange and formation of [(1-Me-3,5-tBu2-C5H3Al){μ-N(SiHMe2)2}Ln(2,4-dtbp)] which engages in a donor(THF)-dependent reversible Ln-to-Al-pentadienyl migration. The reaction of [(1-Me-3,5-tBu2-C5H3Al)(μ-Me)Y(2,4-dtbp)] with [CPh3][B(C6F5)4] results in pentadienyl group abstraction affording cationic complex [(1-Me-3,5-tBu2-C5H3Al)(μ-Me)Y(benzene)][B(C6F5)4] which acts as a single-component catalyst in isoprene polymerization.