Reaction of AlR3 with [CPh3][B(C6F5)4]:  Facile Degradation of [B(C6F5)4]- by Transient “[AlR2]+”

Trimethylaluminum reacts with [CPh3][B(C6F5)4] at elevated temperatures to give a mixture of AlMe3-x(C6F5)x compounds, depending on the Al/B ratio. AlBui 3 reacts significantly faster under β-hydride abstraction. The Al−C6F5 species rapidly react with Cp2ZrMe2 or [Cp2ZrMe]+ under C6F5 transfer to gi...

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Bibliographic Details
Published in:Organometallics 1998-12, Vol.17 (26), p.5908-5912
Main Authors: Bochmann, Sarsfield, Mark J
Format: Article
Language:English
Online Access:Get full text
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Summary:Trimethylaluminum reacts with [CPh3][B(C6F5)4] at elevated temperatures to give a mixture of AlMe3-x(C6F5)x compounds, depending on the Al/B ratio. AlBui 3 reacts significantly faster under β-hydride abstraction. The Al−C6F5 species rapidly react with Cp2ZrMe2 or [Cp2ZrMe]+ under C6F5 transfer to give poorly active Cp2ZrMe(C6F5); this reaction may have implications for the deactivation of Cp2ZrMe2/AlR3/[CPh3][B(C6F5)4] olefin polymerization catalysts.
ISSN:0276-7333
1520-6041
DOI:10.1021/om980400j