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A Highly Selective Ethylene Tetramerization Catalyst

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  • This work was supported by the Natural Science and Engineering Council of Canada (NSERC), the University of Ottawa and the Eindhoven University of Technology.

Abstract

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Small change, big difference: The introduction of an additional CH2 group into the bridge of ligands with two P/N units leads to a different selectivity of the corresponding chromium-based catalysts. Whereas 1 produces an ethylene trimerization system, 2 provides an unprecedented ethylene tetramerization system that produces 1-octene with high purity and little or no polymer side products (see scheme; DMAO=Me3Al-depleted methylaluminoxane).

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