抄録
Yoshida and others determined infrared absorption spectra of α-aceto-γ-hydroxypropyl (I), α-aceto-γ-acetoxypropyl (II), and α-aceto-γ-ethoxypropyl N-[2-methyl-4-aminopyrimidyl-(5)]-methyldithiocarbamate (V), and assumed that the absorption band that appears around 9μ is due to the C-O-C bond of the tetrahydrofuran nucleus. From such a conclusion, they assumed that the above dithiourethanes were respectively 2-methyl-2-hydroxytetrahydrofuryl-(3) (I′), 2-methyl-2-acetoxytetrahydrofuryl-(3) (II′), and 2-methyl-2-ethoxytetrahydrofuryl-(3) N-[2-methyl-4-aminopyrimidyl-(5)]-methyl-dithiocarbamate (V′). The analysis of the absorption band around 9 μ is extremely difficult and it is dangerous to make the above conclusion from this fact alone. The present writers carried out examination of the reactivity of these compounds and pointed out that the results would be extremely irrational if the compounds were given the formulae (I′), (II′), and (V′), and that the chemical changes could be clearly explained by giving them the formulae (I), (II), and (V).
