摘要:
The prepared in situ methyl(chloro)aluminum complex (2) from Me(2)AD and the pendant arm tridentate Schiff base (H-SchNMe(2)) was used to generate the methylaluminum cationic species [(SchNMe(2))AIMe](+) in further reaction with 1 equiv of AICI(3) or NaBPh4 as the chloride abstracting reagents. The exposure of the resulting methylaluminum cationic species to an excess of dry dioxygen at 0 degreesC afforded the alkoxyaluminum cationic species, [(SchNMe(2))AIOMe](+) or [(SchNMe(2))AIOPh](+). The alkoxylaluminum cations proved to be a very efficient catalyst in the polymerization of 6-caprolactone.