An innovative, efficient, regioselective functionalization of C60 with 9H‐fluorenes has been disclosed. This efficient photochemical approach uses certain fluorenyl radicals in 9‐position deriving from fluorenes through a hydrogen‐atom transfer ...
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https://www.riss.kr/link?id=O112849420
2021년
-
1434-193X
1099-0690
SCI;SCIE;SCOPUS
학술저널
4846-4850 [※수록면이 p5 이하이면, Review, Columns, Editor's Note, Abstract 등일 경우가 있습니다.]
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
An innovative, efficient, regioselective functionalization of C60 with 9H‐fluorenes has been disclosed. This efficient photochemical approach uses certain fluorenyl radicals in 9‐position deriving from fluorenes through a hydrogen‐atom transfer ...
An innovative, efficient, regioselective functionalization of C60 with 9H‐fluorenes has been disclosed. This efficient photochemical approach uses certain fluorenyl radicals in 9‐position deriving from fluorenes through a hydrogen‐atom transfer (HAT) process mediated by tetrabutylammoniumdecatungstate [(n‐Bu4N)4W10O32]. The single addition of these fluorenyl radicals to C60 proceeded to produce [60]fullerene‐fluorene dyads in a single step. The scope and mechanism of this new reaction have been examined. The primary kinetic isotope effect measurements signify the presence of a stepwise mechanism in which the C−H (D) bond scission is the rate‐limiting step of the reaction.
A simple and efficient decatungstate catalyzed photochemical addition of 9‐substituted fluorenyl radicals leads to the regioselective preparation of C60‐fluorene dyads in good yields. The cleavage of the C−H or C−D bond in 9‐position of fluorene is the rate‐determining step of the reaction, as indicated by KIE measurements.
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