Dunsford, Jay J, Clark, Ewan R., Ingleson, Michael J. (2015) Highly nucleophilic dipropanolamine chelated boron reagents for aryl-transmetallation to iron complexes. Dalton Transactions, 44 (47). pp. 20577-20583. ISSN 1477-9226. (doi:10.1039/c5dt03835a) (KAR id:60051)
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Official URL: http://doi.org/10.1039/c5dt03835a |
Abstract
New aryl- and heteroarylboronate esters chelated by dipropanolamine are synthesised directly from boronic acids. The corresponding anionic borates are readily accessible by deprotonation and demonstrate an increase in hydrocarbyl nucleophilicity in comparison to other common borates. The new borates proved competent for magnesium or zinc additive-free, direct boron-to-iron hydrocarbyl transmetallations with well-defined iron(II) (pre)catalysts. The application of the new borate reagents in representative Csp2–Csp3 cross-coupling led to almost exclusive homocoupling unless coupling is performed in the presence of a zinc additive.
Item Type: | Article |
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DOI/Identification number: | 10.1039/c5dt03835a |
Divisions: | Divisions > Division of Natural Sciences > Physics and Astronomy |
Depositing User: | Ewan Clark |
Date Deposited: | 23 Jan 2017 16:48 UTC |
Last Modified: | 10 Dec 2022 04:58 UTC |
Resource URI: | https://kar.kent.ac.uk/id/eprint/60051 (The current URI for this page, for reference purposes) |
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