An Umpolung Approach to Acyclic 1,4‐Dicarbonyl Amides via Photoredox‐Generated Carbamoyl Radicals

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Abstract: A method for the generation and reaction of carbamoyl radicals from oxamate salts, followed by reaction with electron‐poor olefins, is described. The oxamate salt acts as a reductive quencher in the photoredox catalytic cycle, allowing mild and mass‐efficient formation of 1,4‐dicarbonyl products; a challenging transformation in the context of functionalized amide formation. Increased understanding has been obtained by the use of ab initio calculations, in support of experimental observations. Furthermore, steps have been taken towards an environmentally‐friendly protocol, by utilizing sodium as a cheap and low mass counterion, and demonstrating successful reactions using a metal‐free photocatalyst and a sustainable, non‐toxic solvent system.

Standort
Deutsche Nationalbibliothek Frankfurt am Main
Umfang
Online-Ressource
Sprache
Englisch

Erschienen in
An Umpolung Approach to Acyclic 1,4‐Dicarbonyl Amides via Photoredox‐Generated Carbamoyl Radicals ; day:31 ; month:03 ; year:2023 ; extent:8
Chemistry - a European journal ; (31.03.2023) (gesamt 8)

Urheber
Williams, Jason
Leach, Stuart G.
Kerr, William J.

DOI
10.1002/chem.202300403
URN
urn:nbn:de:101:1-2023033115424262848676
Rechteinformation
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Letzte Aktualisierung
11.08.2025, 13:41 MESZ

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