Abstract The kinetics of the reaction of 2-chloro-3, 5-dinitropyridine (1) with meta-and para- substituted anilines (2a–j) to give 2-anilino-3, 5-dinitropyridine derivatives (3a–j) were studied in methanol at different temperatures. IR studies of the products (3a–j) indicated the presence of hydrogen bonding between N—H and an o-nitro group, and UV spectra showed a red shift resulting from the interaction between an amino group and aza and nitro groups ...