Abstract
3,6-Dichloropyridazine (1) reacted with 2-aminophenol, phenylalanine, acetophenone hydrazone derivatives, acid hydrazide derivatives and amino-aromatic acids (anthranilic acid and 5-bromoanthranilic acid) and yield the compounds (2), (3), (4a,b), (5a,b) and (6a,b) respectively. Reaction of compounds (5a,b) with acid hydrazide gave (8a,b). Also, compounds (6a,b) reacted with aromatic amino acid and gave (7a-c).