Kinetic Stabilization of Carbazole Nitroxides by Inclusion in a Macrocage and Their Electron Spin Resonance Characterization

Hikaru Hashimoto, Yusuke Inagaki, Hiroyuki Momma, Eunsang Kwon, Wataru Setaka

研究成果: Article査読

3 被引用数 (Scopus)

抄録

Some nitroxides, for example, tetramethylpyridiniumoxide, are known as stable radicals; however, carbazole nitroxide is less stable. The kinetic stabilization of labile radicals by introduction of bulky substituents is usually effective to investigate intrinsic properties of the molecule because of small electronic perturbation induced by the substituents. In this study, macrocage molecules with a carbazole nitroxide connected by covalent bonds were newly designed as kinetically stabilized carbazole nitroxides. The nitroxides were prepared and characterized by electron spin resonance spectroscopy. The caged nitroxides presented long half-lives (∼50 h) by kinetic analysis.

本文言語English
ページ(範囲)11783-11789
ページ数7
ジャーナルJournal of Organic Chemistry
84
18
DOI
出版ステータスPublished - 2019 9 20

ASJC Scopus subject areas

  • Organic Chemistry

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