Electrolysis of N-Heterocyclic Compounds (Part II)

摘要: Publisher Summary The chapter discusses the electrolytic reactions, in which a heterocyclic system is formed. reactions will be treated under following: ring formation contractions, and expansions. In of systems role current to bring one or both reaction centers suitable oxidation state. These may classified different ways; they are according type bond Ring contractions occur during reductions oxidations. A kind reductive expansion reported, benzotriazole converted dihydrobenzo-l,2,4-triazine. involves known opening 2-aminophenylhydrazine by reduction hydrochloric acid, followed condensation with orthoester; yields good it probably most convenient way prepare derivatives benzo-1,2,4-triazine. electrode compounds, nucleus takes place, discussed chapter. carrying substituents included if substituent not reduced oxidized, redox changed substituent. Alkyl compounds oxidized carboxylic acids, for example, methylpyridines methylpyridine N-oxides superoxide ions, generated electrochemically DMF. Heterocyclic hydroxyl can divided into two groups whether group exocyclic.