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Updated: Jun 4, 2025

Preparation of Stable Bicyclic Aziridinium Ions and Their Ring-Opening for the Synthesis of Azaheterocycles
Published on: August 22, 2018
Engineering Air-Stable Triarylmethyl Radicals with One Pyrrole Ring
Pengfei Dong1,2, Zenghui Li2, Kaixing Gu2
1School of Chemistry and Chemical Engineering, State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, Shihezi 832003, China.
Abstract:
Herein, seven air-stable triarylmethyl radicals (3b-3h), each featuring a pyrrole ring, were successfully synthesized. A comprehensive investigation into the linkages at the α-, β-, and N-positions of the pyrrole ring, along with various substituents, revealed that the p-π conjugation between the central radical carbon and the pyrrole ring plays a crucial role in the distribution of spin density and overall stability. Notably, radicals 3c to 3h displayed excellent electrochemical and photostability.
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