Synthesis and Photophysical Study of Heteropolycyclic and Carbazole Motif: Nickel-Catalyzed Chelate-Assisted Cascade C–H Activations/Annulations
作者:Namrata Prusty、Shyam Kumar Banjare、Smruti Ranjan Mohanty、Tanmayee Nanda、Komal Yadav、Ponneri C. Ravikumar
DOI:10.1021/acs.orglett.1c03234
日期:2021.12.3
through sequential C–H bond activations has been described. Regioselective indole C2/C3 functionalization has been achieved in the presence of indole C7-H, which is quite challenging. In addition, this approach also gives easy access to building a heteropolycyclic motif through C6/C7 C–H functionalization of indoline. This methodology is not limited to aromatic internalalkynes as coupling partners; aliphatic
palladium-catalyzed oxidative coupling reactions of N-substituted indoles or their carboxylic acid derivatives with alkynes. Unsymmetrically octasubstituted carbazoles can also be obtained by the stepwise couplings of 1-methylpyrrole-2-carboxylic acid with two different alkynes. In addition, the present coupling procedure is applicable to the synthesis of other various heteroarenes possessing di-, tri-, and tetracyclic
An Expeditious Benzannulation Reaction of Indol-3-yl-but-3-yn-2-ols to Substituted 2-Iodocarbazoles via Domino 5-<i>endo</i>Spirocyclization/Selective Vinyl Shift and Aromatization
作者:Srinivasarao Yaragorla、Ravikrishna Dada、Debojyoti Bag
DOI:10.1002/ejoc.201901393
日期:2019.11.10
to 2‐iodocarbazoles by benzannulation of indole‐tethered propargyl alcohols has been developed at room temperature in an open‐flask reaction using iodine. This benzannulation protocol involves a regioselective 5‐endo‐spirocyclization followed by a selective 1,2‐alkenyl migration and aromatization cascade.
Compound for organic optoelectronic device, composition for organic optoelectronic device, and organic optoelectronic device and display device comprising same
申请人:SAMSUNG SDI CO., LTD.
公开号:US10355224B2
公开(公告)日:2019-07-16
The present invention relates to: a compound for an organic optoelectronic diode, represented by Chemical Formula 1; an organic optoelectronic diode comprising same; and a display device comprising the organic optoelectronic diode. The details of the Chemical Formula 1 are shown in the description.
COMPOUND FOR ORGANIC OPTOELECTRONIC ELEMENT, ORGANIC OPTOELECTRONIC ELEMENT COMPRISING SAME, AND DISPLAY DEVICE
申请人:SAMSUNG SDI CO., LTD.
公开号:US20170294592A1
公开(公告)日:2017-10-12
The present invention relates to a compound for an organic optoelectronic element represented by Chemical Formula 1, an element comprising the same, and a display device comprising the organic optoelectronic element (details of Chemical Formula 1 are as described in the specification).