An indirect electrochemical procedure involving an ex-cell two-phase process is proposed to produce dibenzonaphthyridine derivatives from 2,2-(2-nitrobenzyl)-2-substituted-acetonitriles in dichloromethane. The selective reduction of both nitro groups into amino groups using Cp2Ti+ in aqueous acidic medium avoids a cyclization of hydroxylamine intermediates as observed by direct electrolysis.
提出了一种涉及电化学前两相过程的间接电化学方法,以由二氯甲烷中的2,2-(2-硝基苄基)-2-取代的乙腈生产二苯并萘并吡啶衍生物。如通过直接电解观察到的那样,在水性酸性介质中使用Cp 2 Ti +将两个硝基选择性还原为氨基,避免了羟胺中间体的环化。