H
Harry M. O'Brien
Researcher at University of Bristol
Publications - 6
Citations - 138
Harry M. O'Brien is an academic researcher from University of Bristol. The author has contributed to research in topics: Molecular wire & Moiety. The author has an hindex of 5, co-authored 6 publications receiving 97 citations. Previous affiliations of Harry M. O'Brien include University of Liverpool.
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Journal ArticleDOI
Iron-catalysed substrate-directed Suzuki biaryl cross-coupling
Harry M. O'Brien,Mattia Manzotti,Roman Abrams,David Elorriaga,Hazel A. Sparkes,Sean A. Davis,Robin B. Bedford +6 more
TL;DR: This article showed that a simple N-pyrrole amide and related directing groups on the aryl halide substrates facilitate this process by transient π-coordination to the iron center.
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The highly surprising behaviour of diphosphine ligands in iron-catalysed Negishi cross-coupling
Antonis M. Messinis,Stephen L. J. Luckham,Peter P. Wells,Diego Gianolio,Emma K. Gibson,Emma K. Gibson,Harry M. O'Brien,Hazel A. Sparkes,Sean A. Davis,June Callison,June Callison,David Elorriaga,Oscar Hernandez-Fajardo,Robin B. Bedford +13 more
TL;DR: In this article, it was shown that the activity of iron-diphosphine pre-catalysts in the Negishi coupling of benzyl halides is strongly dependent on the diphosphines, but the ligand does not appear to be coordinated to the iron during turnover.
Journal ArticleDOI
Gateway state-mediated, long-range tunnelling in molecular wires
Sara Sangtarash,Andrea Vezzoli,Hatef Sadeghi,Nicolò Ferri,Harry M. O'Brien,Iain Grace,Laurent Bouffier,Simon J. Higgins,Richard J. Nichols,Colin J. Lambert +9 more
TL;DR: In this paper, the authors examined the attenuation coefficient β for a series of molecules which contain a central conjugated moiety (phenyl, viologen or α-terthiophene) connected on either side to alkane chains of varying length, with each end terminated by thiol or thiomethyl anchor groups.
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Ligand-Free Iron-Catalyzed C–F Amination of Diarylamines: A One-Pot Regioselective Synthesis of Diaryl Dihydrophenazines
TL;DR: A one-pot synthesis of various 5, 10-diaryl-5,10-dihydrophenazines from diarylamines has been achieved by using an iron-catalyzed C-F amination, indicating that amination proceeds via an SNAr mechanism facilitated by iron.
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The surprisingly facile formation of Pd(i)-phosphido complexes from ortho-biphenylphosphines and palladium acetate.
Michelle Montgomery,Harry M. O'Brien,Carolina Méndez-Gálvez,Caitlin R. Bromfield,Jack P.M. Roberts,Anna M. Winnicka,Andrew Horner,David Elorriaga,Hazel A. Sparkes,Robin B. Bedford +9 more
TL;DR: The widely-used ortho-biphenylphosphine ligands SPhos and RuPhos not only undergo facile orthometallation with palladium acetate, but also yield unusual dinuclear Pd(i) complexes, in which the Pd-centers are bridged by both a phosphide ligand and by the arene of a coordinated phosphine donor.