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Haloselective Cross-Coupling via Ni/Photoredox Dual Catalysis
[Image: see text] The chemoselective functionalization of polyfunctional aryl linchpins is crucial for rapid diversification. Although well-explored for C(sp(2)) and C(sp) nucleophiles, the chemoselective introduction of C(sp(3)) groups remains notoriously difficult and is virtually undocumented usi...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American
Chemical Society
2017
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5548095/ https://www.ncbi.nlm.nih.gov/pubmed/28804677 http://dx.doi.org/10.1021/acscatal.7b01773 |
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author | Lin, Kingson Wiles, Rebecca J. Kelly, Christopher B. Davies, Geraint H. M. Molander, Gary A. |
author_facet | Lin, Kingson Wiles, Rebecca J. Kelly, Christopher B. Davies, Geraint H. M. Molander, Gary A. |
author_sort | Lin, Kingson |
collection | PubMed |
description | [Image: see text] The chemoselective functionalization of polyfunctional aryl linchpins is crucial for rapid diversification. Although well-explored for C(sp(2)) and C(sp) nucleophiles, the chemoselective introduction of C(sp(3)) groups remains notoriously difficult and is virtually undocumented using Ni catalysts. To fill this methodological gap, a “haloselective” cross-coupling process of arenes bearing two halogens, I and Br, using ammonium alkylbis(catecholato)silicates, has been developed. Utilizing Ni/photoredox dual catalysis, C(sp(3))–C(sp(2)) bonds can be forged selectively at the iodine-bearing carbon of bromo(iodo)arenes. The described high-yielding, base-free strategy accommodates various protic functional groups. Selective electrophile activation enables installation of a second C(sp(3)) center and can be done without the need for purification of the intermediate monoalkylated product. |
format | Online Article Text |
id | pubmed-5548095 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | American
Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-55480952018-07-07 Haloselective Cross-Coupling via Ni/Photoredox Dual Catalysis Lin, Kingson Wiles, Rebecca J. Kelly, Christopher B. Davies, Geraint H. M. Molander, Gary A. ACS Catal [Image: see text] The chemoselective functionalization of polyfunctional aryl linchpins is crucial for rapid diversification. Although well-explored for C(sp(2)) and C(sp) nucleophiles, the chemoselective introduction of C(sp(3)) groups remains notoriously difficult and is virtually undocumented using Ni catalysts. To fill this methodological gap, a “haloselective” cross-coupling process of arenes bearing two halogens, I and Br, using ammonium alkylbis(catecholato)silicates, has been developed. Utilizing Ni/photoredox dual catalysis, C(sp(3))–C(sp(2)) bonds can be forged selectively at the iodine-bearing carbon of bromo(iodo)arenes. The described high-yielding, base-free strategy accommodates various protic functional groups. Selective electrophile activation enables installation of a second C(sp(3)) center and can be done without the need for purification of the intermediate monoalkylated product. American Chemical Society 2017-07-07 2017-08-04 /pmc/articles/PMC5548095/ /pubmed/28804677 http://dx.doi.org/10.1021/acscatal.7b01773 Text en Copyright © 2017 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes. |
spellingShingle | Lin, Kingson Wiles, Rebecca J. Kelly, Christopher B. Davies, Geraint H. M. Molander, Gary A. Haloselective Cross-Coupling via Ni/Photoredox Dual Catalysis |
title | Haloselective Cross-Coupling via Ni/Photoredox Dual
Catalysis |
title_full | Haloselective Cross-Coupling via Ni/Photoredox Dual
Catalysis |
title_fullStr | Haloselective Cross-Coupling via Ni/Photoredox Dual
Catalysis |
title_full_unstemmed | Haloselective Cross-Coupling via Ni/Photoredox Dual
Catalysis |
title_short | Haloselective Cross-Coupling via Ni/Photoredox Dual
Catalysis |
title_sort | haloselective cross-coupling via ni/photoredox dual
catalysis |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5548095/ https://www.ncbi.nlm.nih.gov/pubmed/28804677 http://dx.doi.org/10.1021/acscatal.7b01773 |
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