FIELD: chemistry.
SUBSTANCE: proposed invention relates to a method of producing symmetrical gem-diamines with general formula 
where 
, involving reacting secondary acyclic or cyclic amines R2NH with excess N,N,N1,N1-tetramethyl methanediamine in the presence of a copper chloride (CuCl) catalyst at temperature 80°C and atmospheric pressure for 2-4 hours. Output of symmetrical gem-diamines is 85-98%.
EFFECT: improved method.
2 dwg, 7 ex
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