Synthesis of a novel viologen functionalized with two 15-crown-5 units, and its reduction by sodium dithionite in organic media, were conducted; the viologen is efficiently reduced to its monomeric cation radical owing to the solubilisation of sodium dithionite in the organic solvent by the 15-crown-5 moiety.
A. Kameyama, Y. Nambu, T. Endo and S. Shinkai, J. Chem. Soc., Chem. Commun., 1992, 1058 DOI: 10.1039/C39920001058
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