| 摘要 |
A process for the manufacture of a 1,1'-disubstituted-4,4'-bipyridylium salt which comprises treating the corresponding 1,1'-disubstituted-1,1',4,4'-tetrahydro-4,4'-bipyridyl with an organic compound which has a redox potential in water more positive than -1.48 volts as compared with the saturated calomel electrode and which reacts with a hydride ion with the formation of an anion which under the conditions of the reaction has a redox potential more positive than -0.45 volt as compared with the saturated calomel electrode. |
