Unexpected decomposition of a monoquarternated 4,4′-bipyridinium dication by disodium dithionite reduction in water
作者:Holger Scheytza、Hans-Ulrich Reissig
DOI:10.1016/s0040-4020(98)01105-3
日期:1999.1
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. (C) 1999 Elsevier Science Ltd. All rights reserved.