Half-sandwich nickel(II) complexes bearing 1,3-di(cycloalkyl)imidazol-2-ylidene ligands

Two new nickel catalysts have been prepared using a convenient procedure where nickelocene, the NHC·HBF(4) salts, and [Et(4)N]Cl were heated in THF using microwave irradiation. The resulting [NiCl(Cp)(NHC)] complexes are air- and moisture stable in the solid state, and represent two new members of t...

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Autores principales: Yau, Johnathon, Hunt, Kaarel E, McDougall, Laura, Kennedy, Alan R, Nelson, David J
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Beilstein-Institut 2015
Materias:
Full Research Paper
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4660989/
https://www.ncbi.nlm.nih.gov/pubmed/26664639
http://dx.doi.org/10.3762/bjoc.11.235
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author Yau, Johnathon
Hunt, Kaarel E
McDougall, Laura
Kennedy, Alan R
Nelson, David J
author_facet Yau, Johnathon
Hunt, Kaarel E
McDougall, Laura
Kennedy, Alan R
Nelson, David J
author_sort Yau, Johnathon
collection PubMed
description Two new nickel catalysts have been prepared using a convenient procedure where nickelocene, the NHC·HBF(4) salts, and [Et(4)N]Cl were heated in THF using microwave irradiation. The resulting [NiCl(Cp)(NHC)] complexes are air- and moisture stable in the solid state, and represent two new members of this valuable and practical class of nickel catalysts. The new species were fully characterised using methods including NMR spectroscopy and X-ray crystallography. When tested in model Suzuki–Miyaura cross-coupling reactions, these complexes were found to be active for the cross-coupling of aryl bromides and aryl chlorides.
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spelling pubmed-46609892015-12-09 Half-sandwich nickel(II) complexes bearing 1,3-di(cycloalkyl)imidazol-2-ylidene ligands Yau, Johnathon Hunt, Kaarel E McDougall, Laura Kennedy, Alan R Nelson, David J Beilstein J Org Chem Full Research Paper Two new nickel catalysts have been prepared using a convenient procedure where nickelocene, the NHC·HBF(4) salts, and [Et(4)N]Cl were heated in THF using microwave irradiation. The resulting [NiCl(Cp)(NHC)] complexes are air- and moisture stable in the solid state, and represent two new members of this valuable and practical class of nickel catalysts. The new species were fully characterised using methods including NMR spectroscopy and X-ray crystallography. When tested in model Suzuki–Miyaura cross-coupling reactions, these complexes were found to be active for the cross-coupling of aryl bromides and aryl chlorides. Beilstein-Institut 2015-11-12 /pmc/articles/PMC4660989/ /pubmed/26664639 http://dx.doi.org/10.3762/bjoc.11.235 Text en Copyright © 2015, Yau et al. https://creativecommons.org/licenses/by/2.0https://www.beilstein-journals.org/bjoc/termsThis is an Open Access article under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The license is subject to the Beilstein Journal of Organic Chemistry terms and conditions: (https://www.beilstein-journals.org/bjoc/terms)
spellingShingle Full Research Paper
Yau, Johnathon
Hunt, Kaarel E
McDougall, Laura
Kennedy, Alan R
Nelson, David J
Half-sandwich nickel(II) complexes bearing 1,3-di(cycloalkyl)imidazol-2-ylidene ligands
title Half-sandwich nickel(II) complexes bearing 1,3-di(cycloalkyl)imidazol-2-ylidene ligands
title_full Half-sandwich nickel(II) complexes bearing 1,3-di(cycloalkyl)imidazol-2-ylidene ligands
title_fullStr Half-sandwich nickel(II) complexes bearing 1,3-di(cycloalkyl)imidazol-2-ylidene ligands
title_full_unstemmed Half-sandwich nickel(II) complexes bearing 1,3-di(cycloalkyl)imidazol-2-ylidene ligands
title_short Half-sandwich nickel(II) complexes bearing 1,3-di(cycloalkyl)imidazol-2-ylidene ligands
title_sort half-sandwich nickel(ii) complexes bearing 1,3-di(cycloalkyl)imidazol-2-ylidene ligands
topic Full Research Paper
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4660989/
https://www.ncbi.nlm.nih.gov/pubmed/26664639
http://dx.doi.org/10.3762/bjoc.11.235
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