Event submissions
To continue our research on catalytic aminomethylation, we studied the effect of catalysts on this reaction involving aliphatic and aromatic amines. We have developed an effective method for the production of cyclic and acyclic carbamide-containing compounds. It is based on the reaction between amines and 1,3-bis[dimethylamino(hydroxy)methyl](thio)urea, prepared in situ from urea or thiourea and bis(dimethylamino)methane or formaldehyde in the presence of NiCl2•6H2O, or CuCl2 •2H2O, and SmCl3•6H2O as catalysts.