Combined Photoredox and Iron Catalysis for the Cyclotrimerization of Alkynes

Successful combinations of visible‐light photocatalysis with metal catalysis have recently enabled the development of hitherto unknown chemical reactions. Dual mechanisms from merging metal‐free photocatalysts and earth‐abundant metal catalysts are still in their infancy. We report a photo‐organo‐ir...

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Autores principales: Neumeier, Michael, Chakraborty, Uttam, Schaarschmidt, Dieter, de la Pena O'Shea, Victor, Perez‐Ruiz, Raul, Jacobi von Wangelin, Axel
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2020
Materias:
Communications
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7496134/
https://www.ncbi.nlm.nih.gov/pubmed/32190960
http://dx.doi.org/10.1002/anie.202000907
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author Neumeier, Michael
Chakraborty, Uttam
Schaarschmidt, Dieter
de la Pena O'Shea, Victor
Perez‐Ruiz, Raul
Jacobi von Wangelin, Axel
author_facet Neumeier, Michael
Chakraborty, Uttam
Schaarschmidt, Dieter
de la Pena O'Shea, Victor
Perez‐Ruiz, Raul
Jacobi von Wangelin, Axel
author_sort Neumeier, Michael
collection PubMed
description Successful combinations of visible‐light photocatalysis with metal catalysis have recently enabled the development of hitherto unknown chemical reactions. Dual mechanisms from merging metal‐free photocatalysts and earth‐abundant metal catalysts are still in their infancy. We report a photo‐organo‐iron‐catalyzed cyclotrimerization of alkynes by photoredox activation of a ligand‐free Fe catalyst. The reaction operates under very mild conditions (visible light, 20 °C, 1 h) with 1–2 mol % loading of the three catalysts (dye, amine, FeCl(2)).
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spelling pubmed-74961342020-09-25 Combined Photoredox and Iron Catalysis for the Cyclotrimerization of Alkynes Neumeier, Michael Chakraborty, Uttam Schaarschmidt, Dieter de la Pena O'Shea, Victor Perez‐Ruiz, Raul Jacobi von Wangelin, Axel Angew Chem Int Ed Engl Communications Successful combinations of visible‐light photocatalysis with metal catalysis have recently enabled the development of hitherto unknown chemical reactions. Dual mechanisms from merging metal‐free photocatalysts and earth‐abundant metal catalysts are still in their infancy. We report a photo‐organo‐iron‐catalyzed cyclotrimerization of alkynes by photoredox activation of a ligand‐free Fe catalyst. The reaction operates under very mild conditions (visible light, 20 °C, 1 h) with 1–2 mol % loading of the three catalysts (dye, amine, FeCl(2)). John Wiley and Sons Inc. 2020-05-27 2020-08-03 /pmc/articles/PMC7496134/ /pubmed/32190960 http://dx.doi.org/10.1002/anie.202000907 Text en © 2020 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA. This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc-nd/4.0/ License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.
spellingShingle Communications
Neumeier, Michael
Chakraborty, Uttam
Schaarschmidt, Dieter
de la Pena O'Shea, Victor
Perez‐Ruiz, Raul
Jacobi von Wangelin, Axel
Combined Photoredox and Iron Catalysis for the Cyclotrimerization of Alkynes
title Combined Photoredox and Iron Catalysis for the Cyclotrimerization of Alkynes
title_full Combined Photoredox and Iron Catalysis for the Cyclotrimerization of Alkynes
title_fullStr Combined Photoredox and Iron Catalysis for the Cyclotrimerization of Alkynes
title_full_unstemmed Combined Photoredox and Iron Catalysis for the Cyclotrimerization of Alkynes
title_short Combined Photoredox and Iron Catalysis for the Cyclotrimerization of Alkynes
title_sort combined photoredox and iron catalysis for the cyclotrimerization of alkynes
topic Communications
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7496134/
https://www.ncbi.nlm.nih.gov/pubmed/32190960
http://dx.doi.org/10.1002/anie.202000907
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