Simple generation of cationic aluminum alkyls and alkoxides based on the pendant arm tridentate schiff base

Janusz Lewiński; Paweł Horeglad; Maciej Dranka; Iwona Justyniak

doi:10.1021/ic049337i

Simple generation of cationic aluminum alkyls and alkoxides based on the pendant arm tridentate schiff base

Inorg Chem. 2004 Sep 20;43(19):5789-91. doi: 10.1021/ic049337i.

Authors

Janusz Lewiński¹, Paweł Horeglad, Maciej Dranka, Iwona Justyniak

Affiliation

¹ Department of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland. [email protected]

PMID: 15360224
DOI: 10.1021/ic049337i

Abstract

The prepared in situ methyl(chloro)aluminum complex (2) from Me2AlCl and the pendant arm tridentate Schiff base (H-SchNMe2) was used to generate the methylaluminum cationic species [(SchNMe2)AlMe]+ in further reaction with 1 equiv of AlCl3 or NaBPh4 as the chloride abstracting reagents. The exposure of the resulting methylaluminum cationic species to an excess of dry dioxygen at 0 degrees C afforded the alkoxyaluminum cationic species, [(SchNMe2)AlOMe]+ or [(SchNMe2)AlOPh]+. The alkoxylaluminum cations proved to be a very efficient catalyst in the polymerization of epsilon-caprolactone.