Synthesis of Carbazole-Fused Azaborines via a Pd-Catalyzed C-H Activation-Cyclization Reaction

Carbazole-fused azaborines were synthesized via a Buchwald-Hartwig amination followed by a Pd-catalyzed C-H activation-cyclization reaction. These azaborines exhibited red-shifted absorptions and photoluminescence emissions compared to those of dibenzoazaborines, suggesting the efficient HOMO-LUMO e...

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Bibliographic Details
Published in:Bulletin of the Chemical Society of Japan 2021-01, Vol.94 (1), p.21-23
Main Authors: Nagata, Masakazu, Oshiro, Taku, Mizuhata, Yoshiyuki, Tokitoh, Norihiro, Hosoya, Takaaki, Yamada, Shigeyuki, Konno, Tsutomu, Fukumoto, Hiroki, Kubota, Toshio, Agou, Tomohiro
Format: Article
Language:English
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Summary:Carbazole-fused azaborines were synthesized via a Buchwald-Hartwig amination followed by a Pd-catalyzed C-H activation-cyclization reaction. These azaborines exhibited red-shifted absorptions and photoluminescence emissions compared to those of dibenzoazaborines, suggesting the efficient HOMO-LUMO energy gap decrease by the carbazole-annulation. The carbazole-fused azaborines showed improved electrochemical stability compared with the previously reported dibenzoazaborine derivatives.
ISSN:0009-2673
1348-0634
DOI:10.1246/bcsj.20200129