Mason, S. F. published the artcile< The electronic spectra of N-heteroaromatic systems. VI. The π → π transitions of monocyclic amino- and mercaptoazines>, Recommanded Product: Pyridazin-4-amine, the main research area is .
Ultraviolet absorption spectra are reported for 2-(I), 3-, and 4-aminopyridine (II), 2-(III), 4-(IV), and 5-aminopyrimidine, 4-aminopyridazine, 2-aminopyrazine, and 3-amino-6-methylpyridazone (V), in approx. neutral solution (pH about 7-9.5) and in acid (pH 1), and the 1-methochlorides of I, II, III, and IV, and the 2-methochloride of V, at pH 12-14. Most of the neutral spectra are repeated in EtOH and cyclohexane, and spectra of 1-methyl-2-, and -4-pyridone imine, 1-methyl-2-, and -4-pyrimidone imine and 2,6-dimethyl-3-pyridazone imine are reported in H2O and cyclohexane. Spectra are also reported for 2-, 3-, and 4-methylthiopyridine and for 4-methyl-2-methylthio-, 2-mercapto-4-methyl-, 6-methyl-4-methylthio-, and 4-mercapto-6-methylthiopyrimidine in neutral, acidic, and basic solution The spectra are discussed in relation to a benzyl anion model (loc. cit.) and a substituted benzene charge transfer model (Murrell, C.A. 53, 6749b). The latter model is more consistent with the exptl. data.
Journal of the Chemical Society published new progress about Azines. 20744-39-2 belongs to class pyridazine, and the molecular formula is C4H5N3, Recommanded Product: Pyridazin-4-amine.
Referemce:
Pyridazine – Wikipedia,
Pyridazine | C4H4N2 – PubChem