C. Ducrocq, E. Bisagni, C. Rivalle
1979
Citations
0
Influential Citations
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Citations
Journal
Journal of The Chemical Society-perkin Transactions 1
Abstract
The normal substitution of 4-chloro-3-nitropyridine by primary aromatic amines is accompanied by the unexpected formation of 1-aryl-4-arylimino-3-nitropyridines. These products are formed via intermediate 4-arylamino-3-nitro-1-(3-nitro-4-pyridyl)pyridinium chlorides that are substituted by the primary amines by a mechanism involving addition–heterocyclic ring opening, closure, and elimination.