820223-94-7Relevant articles and documents
Remote steric control for undirected meta-selective C-H activation of arenes
Asako, Sobi,Ilies, Laurean,Jin, Yushu,Ramadoss, Boobalan
, p. 658 - 663 (2022/02/21)
Regioselective functionalization of arenes remains a challenging problem in organic synthesis. Steric interactions are often used to block sites adjacent to a given substituent, but they do not distinguish the remaining remote sites. We report a strategy
Oxazole or thiazole compound and organic electroluminescent device thereof
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Paragraph 0123-0124; 0126-0127; 0165-0167, (2021/11/27)
The invention provides an oxazole or thiazole compound and an organic electroluminescent device thereof. Belong to organic electroluminescence technical field. The oxazole or thiazole compound provided by the invention has a proper HOMO energy level, can
Para-selective borylation of monosubstituted benzenes using a transient mediator
Wu, Jie,Wang, Zengwei,Chen, Xiao-Yue,Wu, Yichen,Wang, Daoming,Peng, Qian,Wang, Peng
, p. 336 - 340 (2019/12/09)
Herein, we conceptualized a transient mediator approach that has the capability of para-selective C-H functionalization of monosubstituted aromatics. This approach is enabled by in situ generation of a versatile sulfonium salt via highly electrophilic phenoxathiine or thianthrene dication intermediate which can be readily generated from its sulfoxide with trifluoromethanesulfonic anhydride. Preliminary mechanistic study implied that the remarkable para selectivity might be related to the incredible electrophilicity of thianthrene dication intermediate. The versatility of this approach was demonstrated via para-borylation of various monosubstituted simple aromatics combining the sulfonium salt formation with further photocatalyzed transformation.