METHOD OF SYNTHESIS OF CYCLIC LACTAMS

FIELD: organic chemistry and chemical technology. SUBSTANCE: invention relates to a method of synthesis cyclic lactams, in part, E-caprolactam by interaction of aminocarboxylic acid nitrile with water in liquid phase in the presence of heterogeneous catalysts based on titanium dioxide, zirconium oxide, cerium oxide or aluminium oxide. Method involves the use of aminocarboxylic acid nitrile of the formula where m = 3-6 at amount 1-50% of nitrile mass in water or a mixture of water with an organic solvent. EFFECT: improved economical indices of process due to the new catalysts using. 5 cl, 4 tblt