Imine-enamine tautomerism of tropanone Schiff's bases

Using PMR spectroscopy, we have demonstrated the existence of an imine-enamine tautomerism and optically active forms in tropanone Schiff's bases. We have studied the effect of solvents and substituents on the tautomeric equilibrium of the system. By reaction with acid chlorides, we obtain the N-acylation products of the enamine form of the Schiff's bases.Translated from Khimiya Geterotsiklicheskikh Soedinenii, Vol. 34, No. 3, pp. 381–386, March, 1994.