Deady, Leslie W. published the artcileMechanisms for the acetylation of aminopyridines, Related Products of pyridine-derivatives, the publication is Australian Journal of Chemistry (1978), 31(8), 1725-30, database is CAplus.
Rates of acetylation of aminopyridines and some ring methyl-substituted derivatives, with acetic anhydride in acetone at 36°, are reported. Rate-determining acetylation is directly at the amino nitrogen for all 2- and 3-aminopyridines studied. Reaction through a ring N-acetyl intermediate occurs for 4-aminopyridine but the presence of a 2-Me substituent blocks this pathway.
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, Related Products of pyridine-derivatives.
Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem