2023
DOI: 10.1002/ange.202219086
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Kupfer(I) Photokatalysierte Bromnitroalkylierung von Olefinen: Hinweise für effizienten Inner‐Sphären Mechanismus

Abstract: Wir berichten eine durch sichtbares Licht kupferkatalysierte vicinale Difunktionalisierung von Olefinen unter Verwendung von Bromnitroalkanen als ATRA-Reagenzien. Dieses Protokoll zeichnet sich durch hohe Ausbeuten und schnelle Reaktionszeiten unter umweltfreundlichen Reaktionsbedingungen mit außergewöhnlich breitem Substratspektrum aus. Darüber ist die Funktionalisierung biologisch aktiver Moleküle und das Skalieren auf Grammmengen möglich, was vielfältige Möglichkeiten für weitere Transformationen bietet, z.… Show more

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Cited by 4 publications
(4 citation statements)
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“…The subsequent stage operates through a photochemical process that is initiated by coordination between the copper complex VIII and IIa affording IX that, facilitated by a chlorine radical acting as a hydrogen-atom transfer agent, forms X. This species can either proceed towards the corresponding 2-chloroacetophenone XI through a copper-mediated lightinduced homolysis (LIH), 49,50 or can undergo a spin-center shift (SCS), leading to the formation of XII. This, in turn, produces 2a through an initial copper-mediated reduction, forming XIII followed by a protodemetallation.…”
Section: Proposed Catalytic Cyclementioning
confidence: 99%
“…The subsequent stage operates through a photochemical process that is initiated by coordination between the copper complex VIII and IIa affording IX that, facilitated by a chlorine radical acting as a hydrogen-atom transfer agent, forms X. This species can either proceed towards the corresponding 2-chloroacetophenone XI through a copper-mediated lightinduced homolysis (LIH), 49,50 or can undergo a spin-center shift (SCS), leading to the formation of XII. This, in turn, produces 2a through an initial copper-mediated reduction, forming XIII followed by a protodemetallation.…”
Section: Proposed Catalytic Cyclementioning
confidence: 99%
“…copper(II)-complexes, despite having exceptionally short excited-state lifetimes. 121 The viability of this concept is yet to be investigated in more detail for accomplishing decarboxylative transformations. Equally, much room is left for the associated electro-and/or combined electro-and photocatalytic approaches in the future.…”
Section: Conclusion and Future Prospectsmentioning
confidence: 99%
“…Literature reviews regarding synthetic advances based on photoinduced LMCT have been published previously by Julia and Reiser. [12][13][14] This mini review provides an update, focusing on the earth-abundant metals Fe, Co, Ni, and Cu, for which significant synthetic contributions are described herein.…”
Section: Review Synthesismentioning
confidence: 99%