был бы благодарен за статьи:
1. C. D. Johnson, A. R. Katritzky, B. J. Ridgewell and M. Viney;
The mechanism of the electrophilic substitution of heteroaromatic compounds.
Part VI. The nitration of pyridines in the 3-position as free bases and as conjugate acids;
Journal of the Chemical Society B: Physical Organic;
1967, Pages 1204 - 1210;
Код: Выделить всё
http://dx.doi.org/10.1039/J29670001204
Synthesis of Vicinally Substituted Nitropyridine Derivatives and Their N-Oxides;
Heterocycles; 1987, Volume 26, Issue 10, Pages 2727-2755;
DOI не нашел, привожу прямую ссылку:
Код: Выделить всё
http://data.heterocycles.jp/FMPro?-db=journalred.fp5&-format=/w7/JournalDetail.html&-lay=data&-Token.0=aka&-Token.3=R-1987-10-2727&-recid=43277&-Script=citation&-find