Unexpected decomposition of a monoquarternated 4,4′-bipyridinium dication by disodium dithionite reduction in water
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Add time:08/01/2019 Source:sciencedirect.com
Instead of the expected neutral radical the reduction of a quinoxaline bridged 4,4-bipyridinium salt by disodium dithionite (DSD) in water renders 2,3-dimethylquinoxaline and 4,4′-bipyridine. In contrast, with more electronrich arenes used as spacer groups no decomposition products were observed. The mechanism of the chemically induced decomposition and the electrochemical properties of the starting compounds are reported.
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