Methods of Obtaining and Outlooks for the Development of Modern Low-Waste Production of Guanamines in Russia
L. L. Gogin, E. G. Zhizhina, Z. P. Pay, V. N. Parmon
Keywords: guanamines, synthesis, production
Pages: 339-348
Abstract
Known laboratory and industrial methods of obtaining guanamines (6-alkyl- or aryl-substituted 2,4-diamino-1,3,5-triazines) based on modification of substituents in the triazine ring and synthesis from acyclic precursors are described. It is shown that at present the most convenient method of obtaining guanidines is the reaction of dicyandiamide with nitriles in the presence of a strong base, with high-boiling alcohols as solvents. The reaction conditions are considered in detail, the data on its kinetics and mechanism are presented. The conditions of the industrial implementation of this reaction allowing one to develop an up-to-date low-waste technology of obtaining high-quality guanamines are described.
|
