Issue 30, 2022

A cavity-shaped cis-chelating P,N ligand for highly selective nickel-catalysed ethylene dimerisation

Abstract

The presence of a permethylated α-cyclodextrin (α-CD) cavity in a chelating P,N ligand promotes exclusive formation of 1 : 1 ligand/metal complexes. In MX2 complexes, one of the two halido ligands is forced to reside inside the CD hollow while the second one is pointing outside. Unlike its cavity-free analogue, a Ni(II) complex of the CD ligand is a highly selective precatalyst for ethylene dimerisation (96% C4 selectivity with up to 95% of 1-butene within the C4 fraction).

Graphical abstract: A cavity-shaped cis-chelating P,N ligand for highly selective nickel-catalysed ethylene dimerisation

Supplementary files

Article information

Article type
Communication
Submitted
18 Maijs 2022
Accepted
28 Jūn. 2022
First published
21 Jūl. 2022
This article is Open Access
Creative Commons BY-NC license

Dalton Trans., 2022,51, 11226-11230

A cavity-shaped cis-chelating P,N ligand for highly selective nickel-catalysed ethylene dimerisation

Y. Li, K. Pelzer, D. Sechet, G. Creste, D. Matt, P. Braunstein and D. Armspach, Dalton Trans., 2022, 51, 11226 DOI: 10.1039/D2DT01553F

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