Abstract
Using NMR spectroscopy, the competition between different pathways of the interaction of formaldehyde with n-butylamine, n-octylamine, di-n-butylamine, and di-n-octylamine in aqueous media was studied. The effect of the ratio of secondary amines and formaldehyde on the formation of (N,N-dialkylamino)methanols and N,N,N',N'-tetraalkylmethanediamines has been determined. It has been shown that (N-alkylamino)methanols are formed in high yields when a primary amine is used. The replacement of the butyl radical in the starting amine with the octyl radical has a slight effect on the course of the reaction.
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