Issue 39, 2024

Z-selective dimerization of terminal alkynes by a (PNNP)FeII complex

Abstract

A tetradentate bis(amido)bis(phosphine) FeII complex, (PNNP)Fe, is shown to activate the terminal C–H bond of aryl alkynes across its Fe–Namide bonds. (PNNP)Fe is also shown to catalytically dimerize terminal aryl alkynes to produce 1,3-enynes with Z : E ratios as high as 96 : 4 with yields up to 95% and loadings as low as 1 mol% at 30 °C in 2 h. A plausible metal–ligand cooperative mechanism invoking a vinylidene intermediate is proposed.

Graphical abstract: Z-selective dimerization of terminal alkynes by a (PNNP)FeII complex

Supplementary files

Article information

Article type
Communication
Submitted
30 Jan 2024
Accepted
07 Apr 2024
First published
19 Apr 2024

Chem. Commun., 2024,60, 5169-5172

Z-selective dimerization of terminal alkynes by a (PNNP)FeII complex

J. E. Stevens, J. D. Miller, M. C. Fitzsimmons, C. E. Moore and C. M. Thomas, Chem. Commun., 2024, 60, 5169 DOI: 10.1039/D4CC00469H

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