104636-53-5Relevant articles and documents
A 1,2-Addition Pathway for C(sp2)?H Activation at a Dinickel Imide
Powers, Ian G.,Kiattisewee, Cholpisit,Mullane, Kimberly C.,Schelter, Eric J.,Uyeda, Christopher
, p. 7694 - 7697 (2017)
A dinickel imido complex was synthesized using a redox-active naphthyridine-diimine supporting ligand. Upon coordination of an external ligand, the Ni2 core was disrupted, triggering an aromatic C?H activation reaction to generate a Ni2(μ-NHAr)(Ar) species. This intermediate is capable of liberating free carbazole and phenanthridine products upon heating or treatment with excess tBuNC. Collectively, these studies establish a kinetically facile 1,2-addition mechanism for C(sp2)?H activation, taking advantage of cooperative reactivity between two Ni centers.
Bismuth(III) Triflate Catalyzed Three-Component Reactions of Indoles, Ketones, and α-Bromoacetaldehyde Acetals Enable Indole-to-Carbazole Transformation
Gu, Yanlong,Huang, Wenbo,Chen, Shaomin,Wang, Xin
, p. 4285 - 4289 (2018)
A three-component reaction of indoles, α-bromoacetaldehyde acetals, and ketones was developed by using bismuth(III) triflate as the catalyst to realize a straightforward approach for synthesizing carbazole derivatives. The reaction was established mechanistically through the autotandem catalysis of Bi(OTf)3 in the following two steps: (i) Friedel-Crafts-type alkylation of indole with α-bromoacetaldehyde acetal, which produced a tryptaldehyde-type intermediate and (ii) [4 + 2] annulation of this intermediate with the ketone component.
Temporary (P=O) directing group enabled carbazoleorthoarylationviapalladium catalysis
Qi, Zhi-Chao,Lou, Qin-Xin,Niu, Yuan,Yang, Shang-Dong
supporting information, p. 2021 - 2024 (2021/03/01)
A palladium-catalyzed, temporary P(O) directing group assisted C-H bond arylation of carbazoles was achieved. The release of the directing group occurs spontaneously in the reaction and the mechanistic studies indicate that acid is essential for N-P bond cleavage.
A PLURALITY OF HOST MATERIALS AND ORGANIC ELECTROLUMINESCENT DEVICE COMPRISING THE SAME
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Paragraph 0216-0219, (2021/05/08)
The present disclosure relates to a plurality of host materials comprising a first host material comprising a compound represented by formula 1, and a second host material comprising a compound represented by formula 2, and an organic electroluminescent device comprising the same. By comprising a specific combination of compounds as host materials, it is possible to provide an organic electroluminescent device having lower driving voltage, higher luminous efficiency, higher power efficiency, and/or superior lifespan characteristics compared to conventional organic electroluminescent devices.
PLURALITY OF HOST MATERIALS AND ORGANIC ELECTROLUMINESCENT DEVICE COMPRISING THE SAME
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Paragraph 0076-0078, (2021/06/11)
The present disclosure relates to a plurality of host materials comprising a first host material comprising a compound represented by formula 1, and a second host material comprising a compound represented by formula 2, and an organic electroluminescent device comprising the same. By comprising a specific combination of compounds as host materials, it is possible to provide an organic electroluminescent device having higher luminous efficiency, higher power efficiency, and/or better lifetime properties, compared to conventional organic electroluminescent devices.