Evidence for the formation of a hexahydrotriazine in the condensation of acetaldehyde with methylamine
The i.r. and 1H n.m.r. spectra of the product of condensation of acetaldehyde with methylamine are more complex than those expected for the simple azomethine N-ethylidenemethylamine. They are explained in terms of an equilibrium between the monomeric azomethine and two conformers of its cyclic trimer, 1,2,3,4,5,6-hexamethylhexahydro-1,3,5-triazine.