The propanal hydroamination was studied. It was found that the reaction in ethanol proceeded faster than in 2-propanol. By (1)H and (13)C NMR method the existence was proved of a tautomeric equilibrium in ethanol solution between 4-(propylideneamino)benzoic acid and its enamine form, 4-(prop-1-en-1-ylamino)benzoic acid.
The propanal hydroamination was studied. It was found that the reaction in ethanol proceeded faster than in 2-propanol. By (1)H and (13)C NMR method the existence was proved of a tautomeric equilibrium in ethanol solution between 4-(propylideneamino)benzoic acid and its enamine form, 4-(prop-1-en-1-ylamino)benzoic acid.