The Mechanism of the Elimination of Ammonia in the Condensation of Primary Amino-compounds and Certain Syntheses of Nitrogencontaining Heterocycles

Studies on the mechanism of the elimination of ammonia in the interaction of two amino(imino)-compounds or two amino-groups in the same compound, carried out using ¹⁵N, are considered. Taking into account the difference between the properties of the amino-groups, several mechanisms, which explain the experimental findings, are proposed. The ideas developed have been used to interpret the mechanisms of reactions which have not been investigated by the ¹⁵N isotopic method.
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