Phosphanyl Methanimine (PCN) Ligands for the Selective Trimerization/Tetramerization of Ethylene with Chromium

Radcliffe, James E.; Batsanov, Andrei S.; Smith, David M.; Scott, John A.; Dyer, Philip W.; Hanton, Martin J.

doi:10.1021/acscatal.5b02106

Phosphanyl Methanimine (PCN) Ligands for the Selective Trimerization/Tetramerization of Ethylene with Chromium

Radcliffe, James E.; Batsanov, Andrei S.; Smith, David M.; Scott, John A.; Dyer, Philip W.; Hanton, Martin J.

Authors

James E. Radcliffe

Andrei S. Batsanov

David M. Smith

John A. Scott

Professor Philip Dyer p.w.dyer@durham.ac.uk
Professor

Martin J. Hanton

Abstract

1-Phosphanyl methanimine ligands, R2P–C(Ph)═NR′, may be prepared via a modular, convergent synthesis in good overall yield. Coordination chemistry studies with chromium confirm that they bind in a bidentate κ2-P,N mode. In combination with chromium and an activator, these ligands promote the selective oligomerization of ethylene to 1-hexene and 1-octene with high activity. Notably, an exceptionally high liquid fraction selectivity to saleable products (1-hexene + 1-octene) is observed (>95%), along with a potent ligand dependence, such that selectivity can be varied from pure trimerization through to mixed trimerisation/tetramerisation with a 1-octene:1-hexene (OTH) ratio of 1.7.

Citation

Radcliffe, J. E., Batsanov, A. S., Smith, D. M., Scott, J. A., Dyer, P. W., & Hanton, M. J. (2015). Phosphanyl Methanimine (PCN) Ligands for the Selective Trimerization/Tetramerization of Ethylene with Chromium. ACS Catalysis, 5(12), 7095-7098. https://doi.org/10.1021/acscatal.5b02106

Journal Article Type	Article
Acceptance Date	Oct 30, 2015
Online Publication Date	Nov 2, 2015
Publication Date	Dec 4, 2015
Deposit Date	Nov 2, 2015
Publicly Available Date	Oct 30, 2016
Journal	ACS Catalysis
Publisher	American Chemical Society
Peer Reviewed	Peer Reviewed
Volume	5
Issue	12
Pages	7095-7098
DOI	https://doi.org/10.1021/acscatal.5b02106
Keywords	Oligomerization, Trimerization, Tetramerization, Ethylene, Catalysis, α-olefins, Chromium, P,N-ligands.

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Copyright Statement
This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Catalysis, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://dx.doi.org/10.1021/acscatal.5b02106.