Deady, Leslie W. published the artcileThe aminolysis of p-nitrophenyl acetate by aminopyridines. Mechanisms in aqueous and aprotic solvents, Formula: C6H8N2, the publication is Australian Journal of Chemistry (1980), 33(11), 2441-6, database is CAplus.
In Me2SO, the aminolysis of p-nitrophenyl acetate by aminopyridines results in amide formation, through nucleophilic catalysis by the ring N for 4-aminopyridine, but by direct amino N attack for 2-aminopyridine (as previously found for Ac2O). In water, the aminopyridines catalyze the hydrolysis of the ester (unlike aniline, which still gives acetanilide). In general, this occurs by nucleophilic catalysis by the ring N. Even 4-amino-2-methylpyridine reacts by this route (though 2-picoline does not) and, of the compounds studied, only for 2-amino-6-methylpyridine does general base catalysis occur instead. Reasons for these mechanism changes are discussed.
Australian Journal of Chemistry published new progress about 18437-58-6. 18437-58-6 belongs to pyridine-derivatives, auxiliary class Pyridine,Amine, name is 4-Amino-2-picoline, and the molecular formula is C6H8N2, Formula: C6H8N2.
Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem