Übergangsmetallkatalysierte Carboxylierung von C‐H‐Bindungen

Ackermann, Lutz

doi:10.1002/ange.201007883

Cited by 53 publications

(6 citation statements)

References 31 publications

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“…[185] The straightforward preparation of [(NHC)AuCl] derivatives devised by Nolan and co-workers further contributed to the widespread use of these compounds in organometallic catalysis. [33,[186][187][188][189][190][191][192] Nolan reported the CÀH bond carboxylation of arenes and aromatic heterocycles under mild reaction conditions. [159] Various arenes and heteroaromatics were thus carboxylated in good to excellent yield (69-96 %) and with high regioselectivity for the most acidic CÀH bond position.…”

Section: Au-nhc-catalyzed Reactions With Comentioning

confidence: 99%

Recent Advances in Carbon Dioxide Capture, Fixation, and Activation by using N‐Heterocyclic Carbenes

2014

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In the last two decades, CO2 emission has caused a lot of environmental problems. To mitigate the concentration of CO2 in the atmosphere, various strategies have been implemented, one of which is the use of N-heterocyclic carbenes (NHCs) and related complexes to accomplish the capture, fixation, and activation of CO2 effectively. In this review, we summarize CO2 capture, fixation, and activation by utilizing NHCs and related complexes; homogeneous reactions and their reaction mechanisms are discussed. Free NHCs and NHC salts can capture CO2 in both direct and indirect ways to form imidazolium carboxylates, and they can also catalyze the reaction of aromatic aldehydes with CO2 to form carboxylic acids and derivatives. Moreover, associated with transition metals (TMs), NHCs can form NHC-TM complexes to transform CO2 into industrial acid or esters. Non-metal-NHC complexes can also catalyze the reactions of silicon and boron complexes with CO2 . In addition, catalytic cycloaddition of epoxides with CO2 is another effective function of NHC complexes, and NHC ionic liquids perform excellently in this aspect.

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Section: Au-nhc-catalyzed Reactions With Comentioning

confidence: 99%

Recent Advances in Carbon Dioxide Capture, Fixation, and Activation by using N‐Heterocyclic Carbenes

2014

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“…[88] Die C-H-Aktivierung dieses Systems verläuft vermutlich durch Deprotonierung der acidesten Aryl-C-H-Bindung mit dem stark basischen Hydroxoliganden unter Bildung einer Aryl-Metall-Spezies, die über eine CO 2 -Insertion und anschließende Hydrolyse weiterreagiert. Die Bildung des 3-carboxysubstituierten Arens ausgehend von 1,2,4-Trifluorbenzol als einziges Regioisomer ist in Einklang mit dieser Interpretation (Schema 21).…”

Section: F Glorius Et Alunclassified

Ohne dirigierende Gruppen: übergangsmetallkatalysierte C‐H‐Aktivierung einfacher Arene

et al. 2012

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Der Einsatz von koordinierenden Gruppen als dirigierende Gruppen ist eine zuverlässige Methode zur Kontrolle von Reaktivität und Selektivität bei der Aktivierung von Aryl‐C‐H‐Bindungen. Im Hinblick auf die Anwendbarkeit von C‐H‐Aktivierungen in der Synthese besteht derzeit ein großes Interesse daran, Reaktionen zu entwickeln, in denen völlig auf dirigierende Gruppen verzichtet werden kann und somit die Funktionalisierung einfacher Benzolderivate möglich wird. Dieser Ansatz erfordert jedoch neue Strategien zur Reaktivitäts‐ und Selektivitätskontrolle. In diesem Kurzaufsatz werden aktuelle Fortschritte in dem noch jungen Gebiet der nicht‐chelatvermittelten C‐H‐Aktivierung diskutiert, wobei einige inspirierende Beispiele zur Reaktivitäts‐ und Selektivitätsinduktion hervorgehoben werden.

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“…The effect of catalysts was firstly investigated, which revealed that Pd(OAc) 2 was the most effective catalyst (36%, entries [1][2][3][4]. No product was observed in the absence of catalyst or base (entries [5][6]. Then, other bases including LiO t Bu and NaO t Bu were tested (entries 2, 7-8).…”

mentioning

confidence: 99%

Palladium‐Catalyzed Inert C−H Bond Activation and Cyclocarbonylation of Isoquinolones with Carbon Dioxide Leading to Isoindolo[2,1‐b]isoquinoline‐5,7‐Diones

et al. 2019

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A palladium‐catalyzed inert C−H bond activation and cyclocarbonylation of isoquinolones leading to isoindolo[2,1‐b]isoquinoline‐5,7‐diones under 1 atm of carbon dioxide has been developed. This transformation features high regio‐ and chemo‐selectivity, step‐economy, and good functional group tolerance. Most of the corresponding products were obtained in moderate to good yields. It offers an alternative approach for the synthesis of useful diverse isoindolo[2,1‐b]isoquinoline‐5,7‐dione derivatives.

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Übergangsmetallkatalysierte Carboxylierung von C‐H‐Bindungen

Cited by 53 publications

References 31 publications

Recent Advances in Carbon Dioxide Capture, Fixation, and Activation by using N‐Heterocyclic Carbenes

Recent Advances in Carbon Dioxide Capture, Fixation, and Activation by using N‐Heterocyclic Carbenes

Ohne dirigierende Gruppen: übergangsmetallkatalysierte C‐H‐Aktivierung einfacher Arene

Palladium‐Catalyzed Inert C−H Bond Activation and Cyclocarbonylation of Isoquinolones with Carbon Dioxide Leading to Isoindolo[2,1‐b]isoquinoline‐5,7‐Diones

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