<i>m</i>-Terphenyl-Substituted Amidinates: Useful Ligands in
the Preparation of Robust Aluminum Alkyls
Deepa Abeysekera
Katherine N. Robertson
T. Stanley Cameron
Jason A. C. Clyburne
10.1021/om010752h.s001
https://acs.figshare.com/articles/journal_contribution/_i_m_i_-Terphenyl-Substituted_Amidinates_Useful_Ligands_in_the_Preparation_of_Robust_Aluminum_Alkyls/3767433
The syntheses of <i>m</i>-terphenyl-substituted amidines and their corresponding dialkylaluminum amidinate complexes are reported. The amidines are prepared in a one-pot reaction
using 2,4,6-triphenylphenyllithium (formed <i>in situ</i> by the reaction of 2,4,6-triphenylphenylbromide with <i>n</i>-butyllithium) with dialkylcarbodiimides (RNCNR, R = cyclohexyl or
isopropyl). An aqueous workup of the reaction mixtures results in the formation of sterically
demanding amidines <b>2H</b> and <b>3H</b>. The amidines react readily with trimethylaluminum to
form dialkylaluminum amidinate complexes. Two complexes have been prepared and
comprehensively characterized in the solid state using single-crystal X-ray crystallography.
In the crystalline state, dialkylaluminum amidinates are robust complexes that can be easily
handled in air for short periods of time without noticeable decomposition.
2001-11-29 00:00:00
dialkylaluminum amidinates
dialkylaluminum amidinate complexes
RN
3 H
Robust Aluminum Alkyls
reaction mixtures results
amidines 2 H
form dialkylaluminum amidinate complexes