Phosphine- and amine-borane dehydrocoupling using a three-coordinate iron(II) β-diketiminate precatalyst

Coles, Nathan T. ORCID: https://orcid.org/0000-0001-6190-9080, Mahon, Mary F. and Webster, Ruth L. 2017. Phosphine- and amine-borane dehydrocoupling using a three-coordinate iron(II) β-diketiminate precatalyst. Organometallics 36 (11) , 2262–2268. 10.1021/acs.organomet.7b00326

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Abstract

Dehydrocoupling of phosphine- and amine-boranes is reported using an iron(II) β-diketiminate complex. Dehydrocoupling of amine-boranes is far more facile than the phosphine counterpart, the former proceeding at room temperature with 1 mol% iron precatalyst. This low loading is sufficient to allow in situ kinetic analysis and deuterium labeling studies to be carried out. An iron amido-borane complex has also been isolated, which is believed to be the catalyst resting state. Overall, this has allowed us to postulate a catalytic cycle which proceeds via release of diborazane, iron hydride, and iron amido-borane intermediates.

Item Type:	Article
Status:	Published
Schools:	Chemistry
Publisher:	American Chemical Society
ISSN:	0276-7333
Last Modified:	13 Nov 2024 11:30
URI:	https://orca.cardiff.ac.uk/id/eprint/173573

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