The role of ‘internal’ and ‘external’ Lewis bases in controlling the stereochemistry of highly active Ziegler–Natta catalysts
- 1 January 1987
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Chemical Communications
- No. 2,p. 94-95
- https://doi.org/10.1039/c39870000094
Abstract
Chiral discrimination of the enantiomers of racemic α-alkenes in polymerization with highly active MgCl2-supported Ziegler-Natta catalysts is observed when (–)-menthyl benzoate is used as internal Lewis base; using (–)-menthyl benzoate as an external Lewis base leads to opposite but lower stereoelectivity.Keywords
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