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Hydrogen Atom Transfer-Driven Enantioselective Minisci Reaction of Amides

[Image: see text] Minisci-type reactions constitute one of the most powerful methods for building up complexity around basic heteroarenes. The most desirable variants involve formal oxidative coupling of a C–H bond on each partner, leading back to the simplest possible starting materials. We herein...

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Autores principales: Proctor, Rupert S. J., Chuentragool, Padon, Colgan, Avene C., Phipps, Robert J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2021
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8033566/
https://www.ncbi.nlm.nih.gov/pubmed/33780237
http://dx.doi.org/10.1021/jacs.1c01556
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author Proctor, Rupert S. J.
Chuentragool, Padon
Colgan, Avene C.
Phipps, Robert J.
author_facet Proctor, Rupert S. J.
Chuentragool, Padon
Colgan, Avene C.
Phipps, Robert J.
author_sort Proctor, Rupert S. J.
collection PubMed
description [Image: see text] Minisci-type reactions constitute one of the most powerful methods for building up complexity around basic heteroarenes. The most desirable variants involve formal oxidative coupling of a C–H bond on each partner, leading back to the simplest possible starting materials. We herein disclose a method that enables such a coupling of linear amides and heteroarenes with full control of enantioselectivity at the newly formed stereocenter as well as site selectivity on both the heteroarene and the amide. This is achieved by the use of a chiral phosphoric acid catalyst in conjunction with diacetyl as a combined hydrogen atom transfer reagent and oxidant. Diacetyl is directly photoexcitable, and thus, no extraneous photocatalyst is required: an added feature that contributes to the simplicity and practicality of the protocol.
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spelling pubmed-80335662021-04-09 Hydrogen Atom Transfer-Driven Enantioselective Minisci Reaction of Amides Proctor, Rupert S. J. Chuentragool, Padon Colgan, Avene C. Phipps, Robert J. J Am Chem Soc [Image: see text] Minisci-type reactions constitute one of the most powerful methods for building up complexity around basic heteroarenes. The most desirable variants involve formal oxidative coupling of a C–H bond on each partner, leading back to the simplest possible starting materials. We herein disclose a method that enables such a coupling of linear amides and heteroarenes with full control of enantioselectivity at the newly formed stereocenter as well as site selectivity on both the heteroarene and the amide. This is achieved by the use of a chiral phosphoric acid catalyst in conjunction with diacetyl as a combined hydrogen atom transfer reagent and oxidant. Diacetyl is directly photoexcitable, and thus, no extraneous photocatalyst is required: an added feature that contributes to the simplicity and practicality of the protocol. American Chemical Society 2021-03-29 2021-04-07 /pmc/articles/PMC8033566/ /pubmed/33780237 http://dx.doi.org/10.1021/jacs.1c01556 Text en © 2021 The Authors. Published by American Chemical Society Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Proctor, Rupert S. J.
Chuentragool, Padon
Colgan, Avene C.
Phipps, Robert J.
Hydrogen Atom Transfer-Driven Enantioselective Minisci Reaction of Amides
title Hydrogen Atom Transfer-Driven Enantioselective Minisci Reaction of Amides
title_full Hydrogen Atom Transfer-Driven Enantioselective Minisci Reaction of Amides
title_fullStr Hydrogen Atom Transfer-Driven Enantioselective Minisci Reaction of Amides
title_full_unstemmed Hydrogen Atom Transfer-Driven Enantioselective Minisci Reaction of Amides
title_short Hydrogen Atom Transfer-Driven Enantioselective Minisci Reaction of Amides
title_sort hydrogen atom transfer-driven enantioselective minisci reaction of amides
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8033566/
https://www.ncbi.nlm.nih.gov/pubmed/33780237
http://dx.doi.org/10.1021/jacs.1c01556
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