Simple generation of cationic aluminum alkyls and alkoxides based on the pendant arm tridentate schiff base |
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Authors: | Lewiński Janusz Horeglad Paweł Dranka Maciej Justyniak Iwona |
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Institution: | Department of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland. lewin@ch.pw.edu.pl |
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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. |
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