Multiple-Electron Transfer in a Single Step. Design and Synthesis of Highly Charged Cation-Radical Salts
- 9 August 2001
- journal article
- letter
- Published by American Chemical Society (ACS) in Organic Letters
- Vol. 3 (18) , 2887-2890
- https://doi.org/10.1021/ol0163474
Abstract
Macromolecules 1c and 2c bearing multiple redox-active sites are synthesized by an efficient palladium-catalyzed coupling of 2,5-dimethoxytolylmagnesium bromide with readily available hexakis(4-bromophenyl)benzene and tetrakis(4-bromophenyl)methane. These macromolecular electron donors undergo reversible oxidation at a constant potential of 1.15 V vs SCE to yield robust, multiply charged cation radicals that are isolated in pure form using SbCl5 as an oxidant. These nanometer-size cation-radical salts are shown to act as efficient “electron sponges” toward a variety of electron donors.Keywords
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