24275-95-4Relevant articles and documents
Compound for organic luminescence and application thereof
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Paragraph 0029-0033, (2021/03/13)
The invention relates to a compound for organic luminescence. The structure of the compound is shown as a formula (I) in the description, wherein X is selected from one of carbonyl, oxygen atom or sulfur atom; and the formula (I) is also connected with a
Mechanochromism, Twisted/Folded Structure Determination, and Derivatization of (N-Phenylfluorenylidene)acridane
Matsuo, Yutaka,Wang, Ya,Ueno, Hiroshi,Nakagawa, Takafumi,Okada, Hiroshi
supporting information, p. 8762 - 8767 (2019/05/29)
(N-Phenylfluorenylidene)acridane (Ph-FA) compounds with electron-withdrawing and -donating substituents (H, MeO, Ph, NO2, Br, F) at the para position of the phenyl group were successfully synthesized by Barton–Kellogg reactions of N-aryl thioacridones and diazofluorene. By using the substituent on the nitrogen atom to alter the electronic properties, both the folded and twisted conformers of p-NO2-C6H4-FA could be crystallographically characterized, which enabled the charge transfer from the electron-donating acridane moiety to the electron-accepting fluorenylidene moiety to be understood. Ground-state mechanochromism, thermochromism, vapochromism, and proton-induced chromism were demonstrated between the folded and twisted conformations of the conformers. Protonation and chemical oxidation of Ph-FA gave two stable acridinium compounds, namely, the fluorenylacridinium and acridinium radical cations. The present study will contribute to the development of functional dyes and organic semiconductors.
Copper-catalyzed intramolecular direct amination of sp2 C-H bonds for the synthesis of N-aryl acridones
Zhou, Wang,Liu, Yong,Yang, Youqing,Deng, Guo-Jun
supporting information, p. 10678 - 10680 (2012/11/07)
A copper-catalyzed approach for the synthesis of N-aryl acridones via sp2 C-H bond amination using air as oxidant under neutral conditions is disclosed. This reaction not only provides a complementary method for synthesizing medicinally important acridones, but also offers a new strategy for sp2 C-H bond amination.