6479-87-4Relevant academic research and scientific papers
The silver-mediated annulation of arylcarbamic acids and nitrosoarenes toward phenazines
Chen, Fan,Cheng, Jiang,Qian, Peng-Cheng,Wang, Lu
, (2021/12/17)
A silver-mediated annulation between arylcarbamic acids and nitrosoarenes was developed, leading to phenazines in moderate to good yields with complexity and diversity. This procedure proceeded with the sequential ortho[sbnd] C[sbnd]H functionalization of arylcarbamic acids, insertion to nitroso group and decarboxylative annulation.
An umpolung strategy for rapid access to thermally activated delayed fluorescence (TADF) materials based on phenazine
Cheng, Hu,Guo, Qiang,Lan, Jingbo,Ran, Chunhao,Wu, Di,Zhang, Huaxing
supporting information, p. 1581 - 1584 (2022/02/10)
Herein, Ag(I)-promoted regioselective intramolecular radical nucleophilic addition/rearrangement of 2-aryl diazaboroles has been accomplished for the first time to construct phenazine structures. This protocol is an umpolung strategy based on the classical electrophilic mechanism, and therefore, a reversed regioselectivity was observed, which provides an opportunity to prepare sterically hindered phenazines. The resulting thermally activated delayed fluorescence (TADF) materials based on phenazine exhibit emission bands from green to red with high quantum yields and moderate fluorescence lifetimes as solid films.
Preparation method of phenazine compound
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Paragraph 0021-0032; 0038, (2021/09/26)
To the method, a phenazine compound is prepared through continuous ortho C-H functionalization, nitroso insertion and decarboxylation processes of aryl carbamic acid, wherein a carboxyl amino group serves as a trace-free positioning group.
Rhodium-Catalyzed Reaction of Azobenzenes and Nitrosoarenes toward Phenazines
Xiao, Yan,Wu, Xiaopeng,Wang, Hepan,Sun, Song,Yu, Jin-Tao,Cheng, Jiang
, p. 2565 - 2568 (2019/04/30)
A rhodium-catalyzed annulative reaction between azobenzenes and nitrosoarenes has been developed, leading to a series of phenazines in moderate to good yields. This procedure proceeds with sequential chelation-assisted addition of aryl C-H to nitrosoarenes and ring closure by electrophilic attack of azo group to aryl. During this transformation, the azo group served as not only a traceless directing group but also a building block in the final products.
